![Linus Torvalds](/assets/img/avatar_default.png)
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
1942 lines
51 KiB
C
1942 lines
51 KiB
C
/*
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* XFS filesystem operations.
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*
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* Copyright (c) 2000-2005 Silicon Graphics, Inc. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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* Further, this software is distributed without any warranty that it is
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* free of the rightful claim of any third person regarding infringement
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* or the like. Any license provided herein, whether implied or
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* otherwise, applies only to this software file. Patent licenses, if
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* any, provided herein do not apply to combinations of this program with
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* other software, or any other product whatsoever.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write the Free Software Foundation, Inc., 59
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* Temple Place - Suite 330, Boston MA 02111-1307, USA.
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*
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* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
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* Mountain View, CA 94043, or:
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*
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* http://www.sgi.com
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*
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* For further information regarding this notice, see:
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*
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* http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
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*/
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#include "xfs.h"
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#include "xfs_macros.h"
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#include "xfs_types.h"
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#include "xfs_inum.h"
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#include "xfs_log.h"
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#include "xfs_trans.h"
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#include "xfs_sb.h"
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#include "xfs_dir.h"
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#include "xfs_dir2.h"
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#include "xfs_dmapi.h"
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#include "xfs_mount.h"
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#include "xfs_bmap_btree.h"
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#include "xfs_ialloc_btree.h"
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#include "xfs_alloc_btree.h"
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#include "xfs_btree.h"
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#include "xfs_alloc.h"
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#include "xfs_ialloc.h"
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#include "xfs_attr_sf.h"
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#include "xfs_dir_sf.h"
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#include "xfs_dir2_sf.h"
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#include "xfs_dinode.h"
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#include "xfs_inode_item.h"
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#include "xfs_inode.h"
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#include "xfs_ag.h"
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#include "xfs_error.h"
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#include "xfs_bmap.h"
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#include "xfs_da_btree.h"
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#include "xfs_rw.h"
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#include "xfs_refcache.h"
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#include "xfs_buf_item.h"
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#include "xfs_extfree_item.h"
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#include "xfs_quota.h"
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#include "xfs_dir2_trace.h"
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#include "xfs_acl.h"
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#include "xfs_attr.h"
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#include "xfs_clnt.h"
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#include "xfs_log_priv.h"
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STATIC int xfs_sync(bhv_desc_t *, int, cred_t *);
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int
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xfs_init(void)
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{
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extern kmem_zone_t *xfs_bmap_free_item_zone;
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extern kmem_zone_t *xfs_btree_cur_zone;
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extern kmem_zone_t *xfs_trans_zone;
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extern kmem_zone_t *xfs_buf_item_zone;
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extern kmem_zone_t *xfs_dabuf_zone;
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#ifdef XFS_DABUF_DEBUG
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extern lock_t xfs_dabuf_global_lock;
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spinlock_init(&xfs_dabuf_global_lock, "xfsda");
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#endif
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/*
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* Initialize all of the zone allocators we use.
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*/
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xfs_bmap_free_item_zone = kmem_zone_init(sizeof(xfs_bmap_free_item_t),
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"xfs_bmap_free_item");
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xfs_btree_cur_zone = kmem_zone_init(sizeof(xfs_btree_cur_t),
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"xfs_btree_cur");
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xfs_inode_zone = kmem_zone_init(sizeof(xfs_inode_t), "xfs_inode");
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xfs_trans_zone = kmem_zone_init(sizeof(xfs_trans_t), "xfs_trans");
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xfs_da_state_zone =
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kmem_zone_init(sizeof(xfs_da_state_t), "xfs_da_state");
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xfs_dabuf_zone = kmem_zone_init(sizeof(xfs_dabuf_t), "xfs_dabuf");
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/*
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* The size of the zone allocated buf log item is the maximum
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* size possible under XFS. This wastes a little bit of memory,
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* but it is much faster.
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*/
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xfs_buf_item_zone =
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kmem_zone_init((sizeof(xfs_buf_log_item_t) +
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(((XFS_MAX_BLOCKSIZE / XFS_BLI_CHUNK) /
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NBWORD) * sizeof(int))),
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"xfs_buf_item");
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xfs_efd_zone = kmem_zone_init((sizeof(xfs_efd_log_item_t) +
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((XFS_EFD_MAX_FAST_EXTENTS - 1) * sizeof(xfs_extent_t))),
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"xfs_efd_item");
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xfs_efi_zone = kmem_zone_init((sizeof(xfs_efi_log_item_t) +
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((XFS_EFI_MAX_FAST_EXTENTS - 1) * sizeof(xfs_extent_t))),
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"xfs_efi_item");
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xfs_ifork_zone = kmem_zone_init(sizeof(xfs_ifork_t), "xfs_ifork");
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xfs_ili_zone = kmem_zone_init(sizeof(xfs_inode_log_item_t), "xfs_ili");
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xfs_chashlist_zone = kmem_zone_init(sizeof(xfs_chashlist_t),
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"xfs_chashlist");
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xfs_acl_zone_init(xfs_acl_zone, "xfs_acl");
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/*
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* Allocate global trace buffers.
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*/
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#ifdef XFS_ALLOC_TRACE
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xfs_alloc_trace_buf = ktrace_alloc(XFS_ALLOC_TRACE_SIZE, KM_SLEEP);
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#endif
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#ifdef XFS_BMAP_TRACE
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xfs_bmap_trace_buf = ktrace_alloc(XFS_BMAP_TRACE_SIZE, KM_SLEEP);
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#endif
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#ifdef XFS_BMBT_TRACE
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xfs_bmbt_trace_buf = ktrace_alloc(XFS_BMBT_TRACE_SIZE, KM_SLEEP);
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#endif
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#ifdef XFS_DIR_TRACE
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xfs_dir_trace_buf = ktrace_alloc(XFS_DIR_TRACE_SIZE, KM_SLEEP);
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#endif
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#ifdef XFS_ATTR_TRACE
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xfs_attr_trace_buf = ktrace_alloc(XFS_ATTR_TRACE_SIZE, KM_SLEEP);
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#endif
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#ifdef XFS_DIR2_TRACE
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xfs_dir2_trace_buf = ktrace_alloc(XFS_DIR2_GTRACE_SIZE, KM_SLEEP);
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#endif
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xfs_dir_startup();
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#if (defined(DEBUG) || defined(INDUCE_IO_ERROR))
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xfs_error_test_init();
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#endif /* DEBUG || INDUCE_IO_ERROR */
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xfs_init_procfs();
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xfs_sysctl_register();
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return 0;
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}
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void
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xfs_cleanup(void)
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{
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extern kmem_zone_t *xfs_bmap_free_item_zone;
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extern kmem_zone_t *xfs_btree_cur_zone;
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extern kmem_zone_t *xfs_inode_zone;
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extern kmem_zone_t *xfs_trans_zone;
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extern kmem_zone_t *xfs_da_state_zone;
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extern kmem_zone_t *xfs_dabuf_zone;
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extern kmem_zone_t *xfs_efd_zone;
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extern kmem_zone_t *xfs_efi_zone;
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extern kmem_zone_t *xfs_buf_item_zone;
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extern kmem_zone_t *xfs_chashlist_zone;
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xfs_cleanup_procfs();
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xfs_sysctl_unregister();
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xfs_refcache_destroy();
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xfs_acl_zone_destroy(xfs_acl_zone);
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#ifdef XFS_DIR2_TRACE
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ktrace_free(xfs_dir2_trace_buf);
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#endif
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#ifdef XFS_ATTR_TRACE
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ktrace_free(xfs_attr_trace_buf);
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#endif
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#ifdef XFS_DIR_TRACE
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ktrace_free(xfs_dir_trace_buf);
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#endif
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#ifdef XFS_BMBT_TRACE
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ktrace_free(xfs_bmbt_trace_buf);
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#endif
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#ifdef XFS_BMAP_TRACE
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ktrace_free(xfs_bmap_trace_buf);
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#endif
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#ifdef XFS_ALLOC_TRACE
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ktrace_free(xfs_alloc_trace_buf);
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#endif
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kmem_cache_destroy(xfs_bmap_free_item_zone);
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kmem_cache_destroy(xfs_btree_cur_zone);
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kmem_cache_destroy(xfs_inode_zone);
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kmem_cache_destroy(xfs_trans_zone);
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kmem_cache_destroy(xfs_da_state_zone);
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kmem_cache_destroy(xfs_dabuf_zone);
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kmem_cache_destroy(xfs_buf_item_zone);
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kmem_cache_destroy(xfs_efd_zone);
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kmem_cache_destroy(xfs_efi_zone);
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kmem_cache_destroy(xfs_ifork_zone);
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kmem_cache_destroy(xfs_ili_zone);
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kmem_cache_destroy(xfs_chashlist_zone);
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}
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/*
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* xfs_start_flags
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*
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* This function fills in xfs_mount_t fields based on mount args.
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* Note: the superblock has _not_ yet been read in.
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*/
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STATIC int
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xfs_start_flags(
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struct vfs *vfs,
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struct xfs_mount_args *ap,
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struct xfs_mount *mp)
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{
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/* Values are in BBs */
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if ((ap->flags & XFSMNT_NOALIGN) != XFSMNT_NOALIGN) {
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/*
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* At this point the superblock has not been read
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* in, therefore we do not know the block size.
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* Before the mount call ends we will convert
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* these to FSBs.
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*/
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mp->m_dalign = ap->sunit;
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mp->m_swidth = ap->swidth;
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}
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if (ap->logbufs != -1 &&
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#if defined(DEBUG) || defined(XLOG_NOLOG)
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ap->logbufs != 0 &&
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#endif
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(ap->logbufs < XLOG_MIN_ICLOGS ||
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ap->logbufs > XLOG_MAX_ICLOGS)) {
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cmn_err(CE_WARN,
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"XFS: invalid logbufs value: %d [not %d-%d]",
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ap->logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS);
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return XFS_ERROR(EINVAL);
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}
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mp->m_logbufs = ap->logbufs;
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if (ap->logbufsize != -1 &&
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ap->logbufsize != 16 * 1024 &&
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ap->logbufsize != 32 * 1024 &&
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ap->logbufsize != 64 * 1024 &&
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ap->logbufsize != 128 * 1024 &&
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ap->logbufsize != 256 * 1024) {
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cmn_err(CE_WARN,
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"XFS: invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]",
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ap->logbufsize);
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return XFS_ERROR(EINVAL);
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}
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mp->m_ihsize = ap->ihashsize;
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mp->m_logbsize = ap->logbufsize;
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mp->m_fsname_len = strlen(ap->fsname) + 1;
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mp->m_fsname = kmem_alloc(mp->m_fsname_len, KM_SLEEP);
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strcpy(mp->m_fsname, ap->fsname);
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if (ap->flags & XFSMNT_WSYNC)
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mp->m_flags |= XFS_MOUNT_WSYNC;
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#if XFS_BIG_INUMS
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if (ap->flags & XFSMNT_INO64) {
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mp->m_flags |= XFS_MOUNT_INO64;
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mp->m_inoadd = XFS_INO64_OFFSET;
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}
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#endif
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if (ap->flags & XFSMNT_NOATIME)
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mp->m_flags |= XFS_MOUNT_NOATIME;
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if (ap->flags & XFSMNT_RETERR)
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mp->m_flags |= XFS_MOUNT_RETERR;
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if (ap->flags & XFSMNT_NOALIGN)
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mp->m_flags |= XFS_MOUNT_NOALIGN;
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if (ap->flags & XFSMNT_SWALLOC)
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mp->m_flags |= XFS_MOUNT_SWALLOC;
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if (ap->flags & XFSMNT_OSYNCISOSYNC)
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mp->m_flags |= XFS_MOUNT_OSYNCISOSYNC;
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if (ap->flags & XFSMNT_32BITINODES)
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mp->m_flags |= (XFS_MOUNT_32BITINODES | XFS_MOUNT_32BITINOOPT);
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if (ap->flags & XFSMNT_IOSIZE) {
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if (ap->iosizelog > XFS_MAX_IO_LOG ||
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ap->iosizelog < XFS_MIN_IO_LOG) {
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cmn_err(CE_WARN,
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"XFS: invalid log iosize: %d [not %d-%d]",
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ap->iosizelog, XFS_MIN_IO_LOG,
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XFS_MAX_IO_LOG);
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return XFS_ERROR(EINVAL);
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}
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mp->m_flags |= XFS_MOUNT_DFLT_IOSIZE;
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mp->m_readio_log = mp->m_writeio_log = ap->iosizelog;
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}
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if (ap->flags & XFSMNT_IHASHSIZE)
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mp->m_flags |= XFS_MOUNT_IHASHSIZE;
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if (ap->flags & XFSMNT_IDELETE)
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mp->m_flags |= XFS_MOUNT_IDELETE;
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if (ap->flags & XFSMNT_DIRSYNC)
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mp->m_flags |= XFS_MOUNT_DIRSYNC;
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/*
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* no recovery flag requires a read-only mount
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*/
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if (ap->flags & XFSMNT_NORECOVERY) {
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if (!(vfs->vfs_flag & VFS_RDONLY)) {
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cmn_err(CE_WARN,
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"XFS: tried to mount a FS read-write without recovery!");
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return XFS_ERROR(EINVAL);
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}
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mp->m_flags |= XFS_MOUNT_NORECOVERY;
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}
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if (ap->flags & XFSMNT_NOUUID)
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mp->m_flags |= XFS_MOUNT_NOUUID;
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if (ap->flags & XFSMNT_NOLOGFLUSH)
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mp->m_flags |= XFS_MOUNT_NOLOGFLUSH;
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return 0;
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}
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/*
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* This function fills in xfs_mount_t fields based on mount args.
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* Note: the superblock _has_ now been read in.
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*/
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STATIC int
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xfs_finish_flags(
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struct vfs *vfs,
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struct xfs_mount_args *ap,
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struct xfs_mount *mp)
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{
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int ronly = (vfs->vfs_flag & VFS_RDONLY);
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/* Fail a mount where the logbuf is smaller then the log stripe */
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if (XFS_SB_VERSION_HASLOGV2(&mp->m_sb)) {
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if ((ap->logbufsize == -1) &&
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(mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE)) {
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mp->m_logbsize = mp->m_sb.sb_logsunit;
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} else if (ap->logbufsize < mp->m_sb.sb_logsunit) {
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cmn_err(CE_WARN,
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"XFS: logbuf size must be greater than or equal to log stripe size");
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return XFS_ERROR(EINVAL);
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}
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} else {
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/* Fail a mount if the logbuf is larger than 32K */
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if (ap->logbufsize > XLOG_BIG_RECORD_BSIZE) {
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cmn_err(CE_WARN,
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"XFS: logbuf size for version 1 logs must be 16K or 32K");
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return XFS_ERROR(EINVAL);
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}
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}
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/*
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* prohibit r/w mounts of read-only filesystems
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*/
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if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !ronly) {
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cmn_err(CE_WARN,
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"XFS: cannot mount a read-only filesystem as read-write");
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return XFS_ERROR(EROFS);
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}
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/*
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* disallow mount attempts with (IRIX) project quota enabled
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*/
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if (XFS_SB_VERSION_HASQUOTA(&mp->m_sb) &&
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(mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT)) {
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cmn_err(CE_WARN,
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"XFS: cannot mount a filesystem with IRIX project quota enabled");
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return XFS_ERROR(ENOSYS);
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}
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/*
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* check for shared mount.
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*/
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if (ap->flags & XFSMNT_SHARED) {
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if (!XFS_SB_VERSION_HASSHARED(&mp->m_sb))
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return XFS_ERROR(EINVAL);
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/*
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* For IRIX 6.5, shared mounts must have the shared
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* version bit set, have the persistent readonly
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* field set, must be version 0 and can only be mounted
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* read-only.
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*/
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if (!ronly || !(mp->m_sb.sb_flags & XFS_SBF_READONLY) ||
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(mp->m_sb.sb_shared_vn != 0))
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return XFS_ERROR(EINVAL);
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mp->m_flags |= XFS_MOUNT_SHARED;
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/*
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* Shared XFS V0 can't deal with DMI. Return EINVAL.
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*/
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if (mp->m_sb.sb_shared_vn == 0 && (ap->flags & XFSMNT_DMAPI))
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return XFS_ERROR(EINVAL);
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}
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return 0;
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}
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/*
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* xfs_mount
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*
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* The file system configurations are:
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* (1) device (partition) with data and internal log
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* (2) logical volume with data and log subvolumes.
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* (3) logical volume with data, log, and realtime subvolumes.
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*
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* We only have to handle opening the log and realtime volumes here if
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* they are present. The data subvolume has already been opened by
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* get_sb_bdev() and is stored in vfsp->vfs_super->s_bdev.
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*/
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STATIC int
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xfs_mount(
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struct bhv_desc *bhvp,
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struct xfs_mount_args *args,
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cred_t *credp)
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{
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struct vfs *vfsp = bhvtovfs(bhvp);
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struct bhv_desc *p;
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struct xfs_mount *mp = XFS_BHVTOM(bhvp);
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struct block_device *ddev, *logdev, *rtdev;
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int flags = 0, error;
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ddev = vfsp->vfs_super->s_bdev;
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logdev = rtdev = NULL;
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/*
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* Setup xfs_mount function vectors from available behaviors
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*/
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p = vfs_bhv_lookup(vfsp, VFS_POSITION_DM);
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mp->m_dm_ops = p ? *(xfs_dmops_t *) vfs_bhv_custom(p) : xfs_dmcore_stub;
|
|
p = vfs_bhv_lookup(vfsp, VFS_POSITION_QM);
|
|
mp->m_qm_ops = p ? *(xfs_qmops_t *) vfs_bhv_custom(p) : xfs_qmcore_stub;
|
|
p = vfs_bhv_lookup(vfsp, VFS_POSITION_IO);
|
|
mp->m_io_ops = p ? *(xfs_ioops_t *) vfs_bhv_custom(p) : xfs_iocore_xfs;
|
|
|
|
/*
|
|
* Open real time and log devices - order is important.
|
|
*/
|
|
if (args->logname[0]) {
|
|
error = xfs_blkdev_get(mp, args->logname, &logdev);
|
|
if (error)
|
|
return error;
|
|
}
|
|
if (args->rtname[0]) {
|
|
error = xfs_blkdev_get(mp, args->rtname, &rtdev);
|
|
if (error) {
|
|
xfs_blkdev_put(logdev);
|
|
return error;
|
|
}
|
|
|
|
if (rtdev == ddev || rtdev == logdev) {
|
|
cmn_err(CE_WARN,
|
|
"XFS: Cannot mount filesystem with identical rtdev and ddev/logdev.");
|
|
xfs_blkdev_put(logdev);
|
|
xfs_blkdev_put(rtdev);
|
|
return EINVAL;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Setup xfs_mount buffer target pointers
|
|
*/
|
|
error = ENOMEM;
|
|
mp->m_ddev_targp = xfs_alloc_buftarg(ddev, 0);
|
|
if (!mp->m_ddev_targp) {
|
|
xfs_blkdev_put(logdev);
|
|
xfs_blkdev_put(rtdev);
|
|
return error;
|
|
}
|
|
if (rtdev) {
|
|
mp->m_rtdev_targp = xfs_alloc_buftarg(rtdev, 1);
|
|
if (!mp->m_rtdev_targp)
|
|
goto error0;
|
|
}
|
|
mp->m_logdev_targp = (logdev && logdev != ddev) ?
|
|
xfs_alloc_buftarg(logdev, 1) : mp->m_ddev_targp;
|
|
if (!mp->m_logdev_targp)
|
|
goto error0;
|
|
|
|
/*
|
|
* Setup flags based on mount(2) options and then the superblock
|
|
*/
|
|
error = xfs_start_flags(vfsp, args, mp);
|
|
if (error)
|
|
goto error1;
|
|
error = xfs_readsb(mp);
|
|
if (error)
|
|
goto error1;
|
|
error = xfs_finish_flags(vfsp, args, mp);
|
|
if (error)
|
|
goto error2;
|
|
|
|
/*
|
|
* Setup xfs_mount buffer target pointers based on superblock
|
|
*/
|
|
error = xfs_setsize_buftarg(mp->m_ddev_targp, mp->m_sb.sb_blocksize,
|
|
mp->m_sb.sb_sectsize);
|
|
if (!error && logdev && logdev != ddev) {
|
|
unsigned int log_sector_size = BBSIZE;
|
|
|
|
if (XFS_SB_VERSION_HASSECTOR(&mp->m_sb))
|
|
log_sector_size = mp->m_sb.sb_logsectsize;
|
|
error = xfs_setsize_buftarg(mp->m_logdev_targp,
|
|
mp->m_sb.sb_blocksize,
|
|
log_sector_size);
|
|
}
|
|
if (!error && rtdev)
|
|
error = xfs_setsize_buftarg(mp->m_rtdev_targp,
|
|
mp->m_sb.sb_blocksize,
|
|
mp->m_sb.sb_sectsize);
|
|
if (error)
|
|
goto error2;
|
|
|
|
error = XFS_IOINIT(vfsp, args, flags);
|
|
if (!error)
|
|
return 0;
|
|
error2:
|
|
if (mp->m_sb_bp)
|
|
xfs_freesb(mp);
|
|
error1:
|
|
xfs_binval(mp->m_ddev_targp);
|
|
if (logdev && logdev != ddev)
|
|
xfs_binval(mp->m_logdev_targp);
|
|
if (rtdev)
|
|
xfs_binval(mp->m_rtdev_targp);
|
|
error0:
|
|
xfs_unmountfs_close(mp, credp);
|
|
return error;
|
|
}
|
|
|
|
STATIC int
|
|
xfs_unmount(
|
|
bhv_desc_t *bdp,
|
|
int flags,
|
|
cred_t *credp)
|
|
{
|
|
struct vfs *vfsp = bhvtovfs(bdp);
|
|
xfs_mount_t *mp = XFS_BHVTOM(bdp);
|
|
xfs_inode_t *rip;
|
|
vnode_t *rvp;
|
|
int unmount_event_wanted = 0;
|
|
int unmount_event_flags = 0;
|
|
int xfs_unmountfs_needed = 0;
|
|
int error;
|
|
|
|
rip = mp->m_rootip;
|
|
rvp = XFS_ITOV(rip);
|
|
|
|
if (vfsp->vfs_flag & VFS_DMI) {
|
|
error = XFS_SEND_PREUNMOUNT(mp, vfsp,
|
|
rvp, DM_RIGHT_NULL, rvp, DM_RIGHT_NULL,
|
|
NULL, NULL, 0, 0,
|
|
(mp->m_dmevmask & (1<<DM_EVENT_PREUNMOUNT))?
|
|
0:DM_FLAGS_UNWANTED);
|
|
if (error)
|
|
return XFS_ERROR(error);
|
|
unmount_event_wanted = 1;
|
|
unmount_event_flags = (mp->m_dmevmask & (1<<DM_EVENT_UNMOUNT))?
|
|
0 : DM_FLAGS_UNWANTED;
|
|
}
|
|
|
|
/*
|
|
* First blow any referenced inode from this file system
|
|
* out of the reference cache, and delete the timer.
|
|
*/
|
|
xfs_refcache_purge_mp(mp);
|
|
|
|
XFS_bflush(mp->m_ddev_targp);
|
|
error = xfs_unmount_flush(mp, 0);
|
|
if (error)
|
|
goto out;
|
|
|
|
ASSERT(vn_count(rvp) == 1);
|
|
|
|
/*
|
|
* Drop the reference count
|
|
*/
|
|
VN_RELE(rvp);
|
|
|
|
/*
|
|
* If we're forcing a shutdown, typically because of a media error,
|
|
* we want to make sure we invalidate dirty pages that belong to
|
|
* referenced vnodes as well.
|
|
*/
|
|
if (XFS_FORCED_SHUTDOWN(mp)) {
|
|
error = xfs_sync(&mp->m_bhv,
|
|
(SYNC_WAIT | SYNC_CLOSE), credp);
|
|
ASSERT(error != EFSCORRUPTED);
|
|
}
|
|
xfs_unmountfs_needed = 1;
|
|
|
|
out:
|
|
/* Send DMAPI event, if required.
|
|
* Then do xfs_unmountfs() if needed.
|
|
* Then return error (or zero).
|
|
*/
|
|
if (unmount_event_wanted) {
|
|
/* Note: mp structure must still exist for
|
|
* XFS_SEND_UNMOUNT() call.
|
|
*/
|
|
XFS_SEND_UNMOUNT(mp, vfsp, error == 0 ? rvp : NULL,
|
|
DM_RIGHT_NULL, 0, error, unmount_event_flags);
|
|
}
|
|
if (xfs_unmountfs_needed) {
|
|
/*
|
|
* Call common unmount function to flush to disk
|
|
* and free the super block buffer & mount structures.
|
|
*/
|
|
xfs_unmountfs(mp, credp);
|
|
}
|
|
|
|
return XFS_ERROR(error);
|
|
}
|
|
|
|
#define REMOUNT_READONLY_FLAGS (SYNC_REMOUNT|SYNC_ATTR|SYNC_WAIT)
|
|
|
|
STATIC int
|
|
xfs_mntupdate(
|
|
bhv_desc_t *bdp,
|
|
int *flags,
|
|
struct xfs_mount_args *args)
|
|
{
|
|
struct vfs *vfsp = bhvtovfs(bdp);
|
|
xfs_mount_t *mp = XFS_BHVTOM(bdp);
|
|
int pincount, error;
|
|
int count = 0;
|
|
|
|
if (args->flags & XFSMNT_NOATIME)
|
|
mp->m_flags |= XFS_MOUNT_NOATIME;
|
|
else
|
|
mp->m_flags &= ~XFS_MOUNT_NOATIME;
|
|
|
|
if (!(vfsp->vfs_flag & VFS_RDONLY)) {
|
|
VFS_SYNC(vfsp, SYNC_FSDATA|SYNC_BDFLUSH|SYNC_ATTR, NULL, error);
|
|
}
|
|
|
|
if (*flags & MS_RDONLY) {
|
|
xfs_refcache_purge_mp(mp);
|
|
xfs_flush_buftarg(mp->m_ddev_targp, 0);
|
|
xfs_finish_reclaim_all(mp, 0);
|
|
|
|
/* This loop must run at least twice.
|
|
* The first instance of the loop will flush
|
|
* most meta data but that will generate more
|
|
* meta data (typically directory updates).
|
|
* Which then must be flushed and logged before
|
|
* we can write the unmount record.
|
|
*/
|
|
do {
|
|
VFS_SYNC(vfsp, REMOUNT_READONLY_FLAGS, NULL, error);
|
|
pincount = xfs_flush_buftarg(mp->m_ddev_targp, 1);
|
|
if (!pincount) {
|
|
delay(50);
|
|
count++;
|
|
}
|
|
} while (count < 2);
|
|
|
|
/* Ok now write out an unmount record */
|
|
xfs_log_unmount_write(mp);
|
|
xfs_unmountfs_writesb(mp);
|
|
vfsp->vfs_flag |= VFS_RDONLY;
|
|
} else {
|
|
vfsp->vfs_flag &= ~VFS_RDONLY;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* xfs_unmount_flush implements a set of flush operation on special
|
|
* inodes, which are needed as a separate set of operations so that
|
|
* they can be called as part of relocation process.
|
|
*/
|
|
int
|
|
xfs_unmount_flush(
|
|
xfs_mount_t *mp, /* Mount structure we are getting
|
|
rid of. */
|
|
int relocation) /* Called from vfs relocation. */
|
|
{
|
|
xfs_inode_t *rip = mp->m_rootip;
|
|
xfs_inode_t *rbmip;
|
|
xfs_inode_t *rsumip = NULL;
|
|
vnode_t *rvp = XFS_ITOV(rip);
|
|
int error;
|
|
|
|
xfs_ilock(rip, XFS_ILOCK_EXCL);
|
|
xfs_iflock(rip);
|
|
|
|
/*
|
|
* Flush out the real time inodes.
|
|
*/
|
|
if ((rbmip = mp->m_rbmip) != NULL) {
|
|
xfs_ilock(rbmip, XFS_ILOCK_EXCL);
|
|
xfs_iflock(rbmip);
|
|
error = xfs_iflush(rbmip, XFS_IFLUSH_SYNC);
|
|
xfs_iunlock(rbmip, XFS_ILOCK_EXCL);
|
|
|
|
if (error == EFSCORRUPTED)
|
|
goto fscorrupt_out;
|
|
|
|
ASSERT(vn_count(XFS_ITOV(rbmip)) == 1);
|
|
|
|
rsumip = mp->m_rsumip;
|
|
xfs_ilock(rsumip, XFS_ILOCK_EXCL);
|
|
xfs_iflock(rsumip);
|
|
error = xfs_iflush(rsumip, XFS_IFLUSH_SYNC);
|
|
xfs_iunlock(rsumip, XFS_ILOCK_EXCL);
|
|
|
|
if (error == EFSCORRUPTED)
|
|
goto fscorrupt_out;
|
|
|
|
ASSERT(vn_count(XFS_ITOV(rsumip)) == 1);
|
|
}
|
|
|
|
/*
|
|
* Synchronously flush root inode to disk
|
|
*/
|
|
error = xfs_iflush(rip, XFS_IFLUSH_SYNC);
|
|
if (error == EFSCORRUPTED)
|
|
goto fscorrupt_out2;
|
|
|
|
if (vn_count(rvp) != 1 && !relocation) {
|
|
xfs_iunlock(rip, XFS_ILOCK_EXCL);
|
|
return XFS_ERROR(EBUSY);
|
|
}
|
|
|
|
/*
|
|
* Release dquot that rootinode, rbmino and rsumino might be holding,
|
|
* flush and purge the quota inodes.
|
|
*/
|
|
error = XFS_QM_UNMOUNT(mp);
|
|
if (error == EFSCORRUPTED)
|
|
goto fscorrupt_out2;
|
|
|
|
if (rbmip) {
|
|
VN_RELE(XFS_ITOV(rbmip));
|
|
VN_RELE(XFS_ITOV(rsumip));
|
|
}
|
|
|
|
xfs_iunlock(rip, XFS_ILOCK_EXCL);
|
|
return 0;
|
|
|
|
fscorrupt_out:
|
|
xfs_ifunlock(rip);
|
|
|
|
fscorrupt_out2:
|
|
xfs_iunlock(rip, XFS_ILOCK_EXCL);
|
|
|
|
return XFS_ERROR(EFSCORRUPTED);
|
|
}
|
|
|
|
/*
|
|
* xfs_root extracts the root vnode from a vfs.
|
|
*
|
|
* vfsp -- the vfs struct for the desired file system
|
|
* vpp -- address of the caller's vnode pointer which should be
|
|
* set to the desired fs root vnode
|
|
*/
|
|
STATIC int
|
|
xfs_root(
|
|
bhv_desc_t *bdp,
|
|
vnode_t **vpp)
|
|
{
|
|
vnode_t *vp;
|
|
|
|
vp = XFS_ITOV((XFS_BHVTOM(bdp))->m_rootip);
|
|
VN_HOLD(vp);
|
|
*vpp = vp;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* xfs_statvfs
|
|
*
|
|
* Fill in the statvfs structure for the given file system. We use
|
|
* the superblock lock in the mount structure to ensure a consistent
|
|
* snapshot of the counters returned.
|
|
*/
|
|
STATIC int
|
|
xfs_statvfs(
|
|
bhv_desc_t *bdp,
|
|
xfs_statfs_t *statp,
|
|
vnode_t *vp)
|
|
{
|
|
__uint64_t fakeinos;
|
|
xfs_extlen_t lsize;
|
|
xfs_mount_t *mp;
|
|
xfs_sb_t *sbp;
|
|
unsigned long s;
|
|
u64 id;
|
|
|
|
mp = XFS_BHVTOM(bdp);
|
|
sbp = &(mp->m_sb);
|
|
|
|
statp->f_type = XFS_SB_MAGIC;
|
|
|
|
s = XFS_SB_LOCK(mp);
|
|
statp->f_bsize = sbp->sb_blocksize;
|
|
lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0;
|
|
statp->f_blocks = sbp->sb_dblocks - lsize;
|
|
statp->f_bfree = statp->f_bavail = sbp->sb_fdblocks;
|
|
fakeinos = statp->f_bfree << sbp->sb_inopblog;
|
|
#if XFS_BIG_INUMS
|
|
fakeinos += mp->m_inoadd;
|
|
#endif
|
|
statp->f_files =
|
|
MIN(sbp->sb_icount + fakeinos, (__uint64_t)XFS_MAXINUMBER);
|
|
if (mp->m_maxicount)
|
|
#if XFS_BIG_INUMS
|
|
if (!mp->m_inoadd)
|
|
#endif
|
|
statp->f_files = min_t(typeof(statp->f_files),
|
|
statp->f_files,
|
|
mp->m_maxicount);
|
|
statp->f_ffree = statp->f_files - (sbp->sb_icount - sbp->sb_ifree);
|
|
XFS_SB_UNLOCK(mp, s);
|
|
|
|
id = huge_encode_dev(mp->m_dev);
|
|
statp->f_fsid.val[0] = (u32)id;
|
|
statp->f_fsid.val[1] = (u32)(id >> 32);
|
|
statp->f_namelen = MAXNAMELEN - 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* xfs_sync flushes any pending I/O to file system vfsp.
|
|
*
|
|
* This routine is called by vfs_sync() to make sure that things make it
|
|
* out to disk eventually, on sync() system calls to flush out everything,
|
|
* and when the file system is unmounted. For the vfs_sync() case, all
|
|
* we really need to do is sync out the log to make all of our meta-data
|
|
* updates permanent (except for timestamps). For calls from pflushd(),
|
|
* dirty pages are kept moving by calling pdflush() on the inodes
|
|
* containing them. We also flush the inodes that we can lock without
|
|
* sleeping and the superblock if we can lock it without sleeping from
|
|
* vfs_sync() so that items at the tail of the log are always moving out.
|
|
*
|
|
* Flags:
|
|
* SYNC_BDFLUSH - We're being called from vfs_sync() so we don't want
|
|
* to sleep if we can help it. All we really need
|
|
* to do is ensure that the log is synced at least
|
|
* periodically. We also push the inodes and
|
|
* superblock if we can lock them without sleeping
|
|
* and they are not pinned.
|
|
* SYNC_ATTR - We need to flush the inodes. If SYNC_BDFLUSH is not
|
|
* set, then we really want to lock each inode and flush
|
|
* it.
|
|
* SYNC_WAIT - All the flushes that take place in this call should
|
|
* be synchronous.
|
|
* SYNC_DELWRI - This tells us to push dirty pages associated with
|
|
* inodes. SYNC_WAIT and SYNC_BDFLUSH are used to
|
|
* determine if they should be flushed sync, async, or
|
|
* delwri.
|
|
* SYNC_CLOSE - This flag is passed when the system is being
|
|
* unmounted. We should sync and invalidate everthing.
|
|
* SYNC_FSDATA - This indicates that the caller would like to make
|
|
* sure the superblock is safe on disk. We can ensure
|
|
* this by simply makeing sure the log gets flushed
|
|
* if SYNC_BDFLUSH is set, and by actually writing it
|
|
* out otherwise.
|
|
*
|
|
*/
|
|
/*ARGSUSED*/
|
|
STATIC int
|
|
xfs_sync(
|
|
bhv_desc_t *bdp,
|
|
int flags,
|
|
cred_t *credp)
|
|
{
|
|
xfs_mount_t *mp;
|
|
|
|
mp = XFS_BHVTOM(bdp);
|
|
return (xfs_syncsub(mp, flags, 0, NULL));
|
|
}
|
|
|
|
/*
|
|
* xfs sync routine for internal use
|
|
*
|
|
* This routine supports all of the flags defined for the generic VFS_SYNC
|
|
* interface as explained above under xfs_sync. In the interests of not
|
|
* changing interfaces within the 6.5 family, additional internallly-
|
|
* required functions are specified within a separate xflags parameter,
|
|
* only available by calling this routine.
|
|
*
|
|
*/
|
|
STATIC int
|
|
xfs_sync_inodes(
|
|
xfs_mount_t *mp,
|
|
int flags,
|
|
int xflags,
|
|
int *bypassed)
|
|
{
|
|
xfs_inode_t *ip = NULL;
|
|
xfs_inode_t *ip_next;
|
|
xfs_buf_t *bp;
|
|
vnode_t *vp = NULL;
|
|
vmap_t vmap;
|
|
int error;
|
|
int last_error;
|
|
uint64_t fflag;
|
|
uint lock_flags;
|
|
uint base_lock_flags;
|
|
boolean_t mount_locked;
|
|
boolean_t vnode_refed;
|
|
int preempt;
|
|
xfs_dinode_t *dip;
|
|
xfs_iptr_t *ipointer;
|
|
#ifdef DEBUG
|
|
boolean_t ipointer_in = B_FALSE;
|
|
|
|
#define IPOINTER_SET ipointer_in = B_TRUE
|
|
#define IPOINTER_CLR ipointer_in = B_FALSE
|
|
#else
|
|
#define IPOINTER_SET
|
|
#define IPOINTER_CLR
|
|
#endif
|
|
|
|
|
|
/* Insert a marker record into the inode list after inode ip. The list
|
|
* must be locked when this is called. After the call the list will no
|
|
* longer be locked.
|
|
*/
|
|
#define IPOINTER_INSERT(ip, mp) { \
|
|
ASSERT(ipointer_in == B_FALSE); \
|
|
ipointer->ip_mnext = ip->i_mnext; \
|
|
ipointer->ip_mprev = ip; \
|
|
ip->i_mnext = (xfs_inode_t *)ipointer; \
|
|
ipointer->ip_mnext->i_mprev = (xfs_inode_t *)ipointer; \
|
|
preempt = 0; \
|
|
XFS_MOUNT_IUNLOCK(mp); \
|
|
mount_locked = B_FALSE; \
|
|
IPOINTER_SET; \
|
|
}
|
|
|
|
/* Remove the marker from the inode list. If the marker was the only item
|
|
* in the list then there are no remaining inodes and we should zero out
|
|
* the whole list. If we are the current head of the list then move the head
|
|
* past us.
|
|
*/
|
|
#define IPOINTER_REMOVE(ip, mp) { \
|
|
ASSERT(ipointer_in == B_TRUE); \
|
|
if (ipointer->ip_mnext != (xfs_inode_t *)ipointer) { \
|
|
ip = ipointer->ip_mnext; \
|
|
ip->i_mprev = ipointer->ip_mprev; \
|
|
ipointer->ip_mprev->i_mnext = ip; \
|
|
if (mp->m_inodes == (xfs_inode_t *)ipointer) { \
|
|
mp->m_inodes = ip; \
|
|
} \
|
|
} else { \
|
|
ASSERT(mp->m_inodes == (xfs_inode_t *)ipointer); \
|
|
mp->m_inodes = NULL; \
|
|
ip = NULL; \
|
|
} \
|
|
IPOINTER_CLR; \
|
|
}
|
|
|
|
#define XFS_PREEMPT_MASK 0x7f
|
|
|
|
if (bypassed)
|
|
*bypassed = 0;
|
|
if (XFS_MTOVFS(mp)->vfs_flag & VFS_RDONLY)
|
|
return 0;
|
|
error = 0;
|
|
last_error = 0;
|
|
preempt = 0;
|
|
|
|
/* Allocate a reference marker */
|
|
ipointer = (xfs_iptr_t *)kmem_zalloc(sizeof(xfs_iptr_t), KM_SLEEP);
|
|
|
|
fflag = XFS_B_ASYNC; /* default is don't wait */
|
|
if (flags & SYNC_BDFLUSH)
|
|
fflag = XFS_B_DELWRI;
|
|
if (flags & SYNC_WAIT)
|
|
fflag = 0; /* synchronous overrides all */
|
|
|
|
base_lock_flags = XFS_ILOCK_SHARED;
|
|
if (flags & (SYNC_DELWRI | SYNC_CLOSE)) {
|
|
/*
|
|
* We need the I/O lock if we're going to call any of
|
|
* the flush/inval routines.
|
|
*/
|
|
base_lock_flags |= XFS_IOLOCK_SHARED;
|
|
}
|
|
|
|
XFS_MOUNT_ILOCK(mp);
|
|
|
|
ip = mp->m_inodes;
|
|
|
|
mount_locked = B_TRUE;
|
|
vnode_refed = B_FALSE;
|
|
|
|
IPOINTER_CLR;
|
|
|
|
do {
|
|
ASSERT(ipointer_in == B_FALSE);
|
|
ASSERT(vnode_refed == B_FALSE);
|
|
|
|
lock_flags = base_lock_flags;
|
|
|
|
/*
|
|
* There were no inodes in the list, just break out
|
|
* of the loop.
|
|
*/
|
|
if (ip == NULL) {
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* We found another sync thread marker - skip it
|
|
*/
|
|
if (ip->i_mount == NULL) {
|
|
ip = ip->i_mnext;
|
|
continue;
|
|
}
|
|
|
|
vp = XFS_ITOV_NULL(ip);
|
|
|
|
/*
|
|
* If the vnode is gone then this is being torn down,
|
|
* call reclaim if it is flushed, else let regular flush
|
|
* code deal with it later in the loop.
|
|
*/
|
|
|
|
if (vp == NULL) {
|
|
/* Skip ones already in reclaim */
|
|
if (ip->i_flags & XFS_IRECLAIM) {
|
|
ip = ip->i_mnext;
|
|
continue;
|
|
}
|
|
if (xfs_ilock_nowait(ip, XFS_ILOCK_EXCL) == 0) {
|
|
ip = ip->i_mnext;
|
|
} else if ((xfs_ipincount(ip) == 0) &&
|
|
xfs_iflock_nowait(ip)) {
|
|
IPOINTER_INSERT(ip, mp);
|
|
|
|
xfs_finish_reclaim(ip, 1,
|
|
XFS_IFLUSH_DELWRI_ELSE_ASYNC);
|
|
|
|
XFS_MOUNT_ILOCK(mp);
|
|
mount_locked = B_TRUE;
|
|
IPOINTER_REMOVE(ip, mp);
|
|
} else {
|
|
xfs_iunlock(ip, XFS_ILOCK_EXCL);
|
|
ip = ip->i_mnext;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
if (VN_BAD(vp)) {
|
|
ip = ip->i_mnext;
|
|
continue;
|
|
}
|
|
|
|
if (XFS_FORCED_SHUTDOWN(mp) && !(flags & SYNC_CLOSE)) {
|
|
XFS_MOUNT_IUNLOCK(mp);
|
|
kmem_free(ipointer, sizeof(xfs_iptr_t));
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* If this is just vfs_sync() or pflushd() calling
|
|
* then we can skip inodes for which it looks like
|
|
* there is nothing to do. Since we don't have the
|
|
* inode locked this is racey, but these are periodic
|
|
* calls so it doesn't matter. For the others we want
|
|
* to know for sure, so we at least try to lock them.
|
|
*/
|
|
if (flags & SYNC_BDFLUSH) {
|
|
if (((ip->i_itemp == NULL) ||
|
|
!(ip->i_itemp->ili_format.ilf_fields &
|
|
XFS_ILOG_ALL)) &&
|
|
(ip->i_update_core == 0)) {
|
|
ip = ip->i_mnext;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Try to lock without sleeping. We're out of order with
|
|
* the inode list lock here, so if we fail we need to drop
|
|
* the mount lock and try again. If we're called from
|
|
* bdflush() here, then don't bother.
|
|
*
|
|
* The inode lock here actually coordinates with the
|
|
* almost spurious inode lock in xfs_ireclaim() to prevent
|
|
* the vnode we handle here without a reference from
|
|
* being freed while we reference it. If we lock the inode
|
|
* while it's on the mount list here, then the spurious inode
|
|
* lock in xfs_ireclaim() after the inode is pulled from
|
|
* the mount list will sleep until we release it here.
|
|
* This keeps the vnode from being freed while we reference
|
|
* it. It is also cheaper and simpler than actually doing
|
|
* a vn_get() for every inode we touch here.
|
|
*/
|
|
if (xfs_ilock_nowait(ip, lock_flags) == 0) {
|
|
|
|
if ((flags & SYNC_BDFLUSH) || (vp == NULL)) {
|
|
ip = ip->i_mnext;
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* We need to unlock the inode list lock in order
|
|
* to lock the inode. Insert a marker record into
|
|
* the inode list to remember our position, dropping
|
|
* the lock is now done inside the IPOINTER_INSERT
|
|
* macro.
|
|
*
|
|
* We also use the inode list lock to protect us
|
|
* in taking a snapshot of the vnode version number
|
|
* for use in calling vn_get().
|
|
*/
|
|
VMAP(vp, vmap);
|
|
IPOINTER_INSERT(ip, mp);
|
|
|
|
vp = vn_get(vp, &vmap);
|
|
if (vp == NULL) {
|
|
/*
|
|
* The vnode was reclaimed once we let go
|
|
* of the inode list lock. Skip to the
|
|
* next list entry. Remove the marker.
|
|
*/
|
|
|
|
XFS_MOUNT_ILOCK(mp);
|
|
|
|
mount_locked = B_TRUE;
|
|
vnode_refed = B_FALSE;
|
|
|
|
IPOINTER_REMOVE(ip, mp);
|
|
|
|
continue;
|
|
}
|
|
|
|
xfs_ilock(ip, lock_flags);
|
|
|
|
ASSERT(vp == XFS_ITOV(ip));
|
|
ASSERT(ip->i_mount == mp);
|
|
|
|
vnode_refed = B_TRUE;
|
|
}
|
|
|
|
/* From here on in the loop we may have a marker record
|
|
* in the inode list.
|
|
*/
|
|
|
|
if ((flags & SYNC_CLOSE) && (vp != NULL)) {
|
|
/*
|
|
* This is the shutdown case. We just need to
|
|
* flush and invalidate all the pages associated
|
|
* with the inode. Drop the inode lock since
|
|
* we can't hold it across calls to the buffer
|
|
* cache.
|
|
*
|
|
* We don't set the VREMAPPING bit in the vnode
|
|
* here, because we don't hold the vnode lock
|
|
* exclusively. It doesn't really matter, though,
|
|
* because we only come here when we're shutting
|
|
* down anyway.
|
|
*/
|
|
xfs_iunlock(ip, XFS_ILOCK_SHARED);
|
|
|
|
if (XFS_FORCED_SHUTDOWN(mp)) {
|
|
VOP_TOSS_PAGES(vp, 0, -1, FI_REMAPF);
|
|
} else {
|
|
VOP_FLUSHINVAL_PAGES(vp, 0, -1, FI_REMAPF);
|
|
}
|
|
|
|
xfs_ilock(ip, XFS_ILOCK_SHARED);
|
|
|
|
} else if ((flags & SYNC_DELWRI) && (vp != NULL)) {
|
|
if (VN_DIRTY(vp)) {
|
|
/* We need to have dropped the lock here,
|
|
* so insert a marker if we have not already
|
|
* done so.
|
|
*/
|
|
if (mount_locked) {
|
|
IPOINTER_INSERT(ip, mp);
|
|
}
|
|
|
|
/*
|
|
* Drop the inode lock since we can't hold it
|
|
* across calls to the buffer cache.
|
|
*/
|
|
xfs_iunlock(ip, XFS_ILOCK_SHARED);
|
|
VOP_FLUSH_PAGES(vp, (xfs_off_t)0, -1,
|
|
fflag, FI_NONE, error);
|
|
xfs_ilock(ip, XFS_ILOCK_SHARED);
|
|
}
|
|
|
|
}
|
|
|
|
if (flags & SYNC_BDFLUSH) {
|
|
if ((flags & SYNC_ATTR) &&
|
|
((ip->i_update_core) ||
|
|
((ip->i_itemp != NULL) &&
|
|
(ip->i_itemp->ili_format.ilf_fields != 0)))) {
|
|
|
|
/* Insert marker and drop lock if not already
|
|
* done.
|
|
*/
|
|
if (mount_locked) {
|
|
IPOINTER_INSERT(ip, mp);
|
|
}
|
|
|
|
/*
|
|
* We don't want the periodic flushing of the
|
|
* inodes by vfs_sync() to interfere with
|
|
* I/O to the file, especially read I/O
|
|
* where it is only the access time stamp
|
|
* that is being flushed out. To prevent
|
|
* long periods where we have both inode
|
|
* locks held shared here while reading the
|
|
* inode's buffer in from disk, we drop the
|
|
* inode lock while reading in the inode
|
|
* buffer. We have to release the buffer
|
|
* and reacquire the inode lock so that they
|
|
* are acquired in the proper order (inode
|
|
* locks first). The buffer will go at the
|
|
* end of the lru chain, though, so we can
|
|
* expect it to still be there when we go
|
|
* for it again in xfs_iflush().
|
|
*/
|
|
if ((xfs_ipincount(ip) == 0) &&
|
|
xfs_iflock_nowait(ip)) {
|
|
|
|
xfs_ifunlock(ip);
|
|
xfs_iunlock(ip, XFS_ILOCK_SHARED);
|
|
|
|
error = xfs_itobp(mp, NULL, ip,
|
|
&dip, &bp, 0);
|
|
if (!error) {
|
|
xfs_buf_relse(bp);
|
|
} else {
|
|
/* Bailing out, remove the
|
|
* marker and free it.
|
|
*/
|
|
XFS_MOUNT_ILOCK(mp);
|
|
|
|
IPOINTER_REMOVE(ip, mp);
|
|
|
|
XFS_MOUNT_IUNLOCK(mp);
|
|
|
|
ASSERT(!(lock_flags &
|
|
XFS_IOLOCK_SHARED));
|
|
|
|
kmem_free(ipointer,
|
|
sizeof(xfs_iptr_t));
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Since we dropped the inode lock,
|
|
* the inode may have been reclaimed.
|
|
* Therefore, we reacquire the mount
|
|
* lock and check to see if we were the
|
|
* inode reclaimed. If this happened
|
|
* then the ipointer marker will no
|
|
* longer point back at us. In this
|
|
* case, move ip along to the inode
|
|
* after the marker, remove the marker
|
|
* and continue.
|
|
*/
|
|
XFS_MOUNT_ILOCK(mp);
|
|
mount_locked = B_TRUE;
|
|
|
|
if (ip != ipointer->ip_mprev) {
|
|
IPOINTER_REMOVE(ip, mp);
|
|
|
|
ASSERT(!vnode_refed);
|
|
ASSERT(!(lock_flags &
|
|
XFS_IOLOCK_SHARED));
|
|
continue;
|
|
}
|
|
|
|
ASSERT(ip->i_mount == mp);
|
|
|
|
if (xfs_ilock_nowait(ip,
|
|
XFS_ILOCK_SHARED) == 0) {
|
|
ASSERT(ip->i_mount == mp);
|
|
/*
|
|
* We failed to reacquire
|
|
* the inode lock without
|
|
* sleeping, so just skip
|
|
* the inode for now. We
|
|
* clear the ILOCK bit from
|
|
* the lock_flags so that we
|
|
* won't try to drop a lock
|
|
* we don't hold below.
|
|
*/
|
|
lock_flags &= ~XFS_ILOCK_SHARED;
|
|
IPOINTER_REMOVE(ip_next, mp);
|
|
} else if ((xfs_ipincount(ip) == 0) &&
|
|
xfs_iflock_nowait(ip)) {
|
|
ASSERT(ip->i_mount == mp);
|
|
/*
|
|
* Since this is vfs_sync()
|
|
* calling we only flush the
|
|
* inode out if we can lock
|
|
* it without sleeping and
|
|
* it is not pinned. Drop
|
|
* the mount lock here so
|
|
* that we don't hold it for
|
|
* too long. We already have
|
|
* a marker in the list here.
|
|
*/
|
|
XFS_MOUNT_IUNLOCK(mp);
|
|
mount_locked = B_FALSE;
|
|
error = xfs_iflush(ip,
|
|
XFS_IFLUSH_DELWRI);
|
|
} else {
|
|
ASSERT(ip->i_mount == mp);
|
|
IPOINTER_REMOVE(ip_next, mp);
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
} else {
|
|
if ((flags & SYNC_ATTR) &&
|
|
((ip->i_update_core) ||
|
|
((ip->i_itemp != NULL) &&
|
|
(ip->i_itemp->ili_format.ilf_fields != 0)))) {
|
|
if (mount_locked) {
|
|
IPOINTER_INSERT(ip, mp);
|
|
}
|
|
|
|
if (flags & SYNC_WAIT) {
|
|
xfs_iflock(ip);
|
|
error = xfs_iflush(ip,
|
|
XFS_IFLUSH_SYNC);
|
|
} else {
|
|
/*
|
|
* If we can't acquire the flush
|
|
* lock, then the inode is already
|
|
* being flushed so don't bother
|
|
* waiting. If we can lock it then
|
|
* do a delwri flush so we can
|
|
* combine multiple inode flushes
|
|
* in each disk write.
|
|
*/
|
|
if (xfs_iflock_nowait(ip)) {
|
|
error = xfs_iflush(ip,
|
|
XFS_IFLUSH_DELWRI);
|
|
}
|
|
else if (bypassed)
|
|
(*bypassed)++;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (lock_flags != 0) {
|
|
xfs_iunlock(ip, lock_flags);
|
|
}
|
|
|
|
if (vnode_refed) {
|
|
/*
|
|
* If we had to take a reference on the vnode
|
|
* above, then wait until after we've unlocked
|
|
* the inode to release the reference. This is
|
|
* because we can be already holding the inode
|
|
* lock when VN_RELE() calls xfs_inactive().
|
|
*
|
|
* Make sure to drop the mount lock before calling
|
|
* VN_RELE() so that we don't trip over ourselves if
|
|
* we have to go for the mount lock again in the
|
|
* inactive code.
|
|
*/
|
|
if (mount_locked) {
|
|
IPOINTER_INSERT(ip, mp);
|
|
}
|
|
|
|
VN_RELE(vp);
|
|
|
|
vnode_refed = B_FALSE;
|
|
}
|
|
|
|
if (error) {
|
|
last_error = error;
|
|
}
|
|
|
|
/*
|
|
* bail out if the filesystem is corrupted.
|
|
*/
|
|
if (error == EFSCORRUPTED) {
|
|
if (!mount_locked) {
|
|
XFS_MOUNT_ILOCK(mp);
|
|
IPOINTER_REMOVE(ip, mp);
|
|
}
|
|
XFS_MOUNT_IUNLOCK(mp);
|
|
ASSERT(ipointer_in == B_FALSE);
|
|
kmem_free(ipointer, sizeof(xfs_iptr_t));
|
|
return XFS_ERROR(error);
|
|
}
|
|
|
|
/* Let other threads have a chance at the mount lock
|
|
* if we have looped many times without dropping the
|
|
* lock.
|
|
*/
|
|
if ((++preempt & XFS_PREEMPT_MASK) == 0) {
|
|
if (mount_locked) {
|
|
IPOINTER_INSERT(ip, mp);
|
|
}
|
|
}
|
|
|
|
if (mount_locked == B_FALSE) {
|
|
XFS_MOUNT_ILOCK(mp);
|
|
mount_locked = B_TRUE;
|
|
IPOINTER_REMOVE(ip, mp);
|
|
continue;
|
|
}
|
|
|
|
ASSERT(ipointer_in == B_FALSE);
|
|
ip = ip->i_mnext;
|
|
|
|
} while (ip != mp->m_inodes);
|
|
|
|
XFS_MOUNT_IUNLOCK(mp);
|
|
|
|
ASSERT(ipointer_in == B_FALSE);
|
|
|
|
kmem_free(ipointer, sizeof(xfs_iptr_t));
|
|
return XFS_ERROR(last_error);
|
|
}
|
|
|
|
/*
|
|
* xfs sync routine for internal use
|
|
*
|
|
* This routine supports all of the flags defined for the generic VFS_SYNC
|
|
* interface as explained above under xfs_sync. In the interests of not
|
|
* changing interfaces within the 6.5 family, additional internallly-
|
|
* required functions are specified within a separate xflags parameter,
|
|
* only available by calling this routine.
|
|
*
|
|
*/
|
|
int
|
|
xfs_syncsub(
|
|
xfs_mount_t *mp,
|
|
int flags,
|
|
int xflags,
|
|
int *bypassed)
|
|
{
|
|
int error = 0;
|
|
int last_error = 0;
|
|
uint log_flags = XFS_LOG_FORCE;
|
|
xfs_buf_t *bp;
|
|
xfs_buf_log_item_t *bip;
|
|
|
|
/*
|
|
* Sync out the log. This ensures that the log is periodically
|
|
* flushed even if there is not enough activity to fill it up.
|
|
*/
|
|
if (flags & SYNC_WAIT)
|
|
log_flags |= XFS_LOG_SYNC;
|
|
|
|
xfs_log_force(mp, (xfs_lsn_t)0, log_flags);
|
|
|
|
if (flags & (SYNC_ATTR|SYNC_DELWRI)) {
|
|
if (flags & SYNC_BDFLUSH)
|
|
xfs_finish_reclaim_all(mp, 1);
|
|
else
|
|
error = xfs_sync_inodes(mp, flags, xflags, bypassed);
|
|
}
|
|
|
|
/*
|
|
* Flushing out dirty data above probably generated more
|
|
* log activity, so if this isn't vfs_sync() then flush
|
|
* the log again.
|
|
*/
|
|
if (flags & SYNC_DELWRI) {
|
|
xfs_log_force(mp, (xfs_lsn_t)0, log_flags);
|
|
}
|
|
|
|
if (flags & SYNC_FSDATA) {
|
|
/*
|
|
* If this is vfs_sync() then only sync the superblock
|
|
* if we can lock it without sleeping and it is not pinned.
|
|
*/
|
|
if (flags & SYNC_BDFLUSH) {
|
|
bp = xfs_getsb(mp, XFS_BUF_TRYLOCK);
|
|
if (bp != NULL) {
|
|
bip = XFS_BUF_FSPRIVATE(bp,xfs_buf_log_item_t*);
|
|
if ((bip != NULL) &&
|
|
xfs_buf_item_dirty(bip)) {
|
|
if (!(XFS_BUF_ISPINNED(bp))) {
|
|
XFS_BUF_ASYNC(bp);
|
|
error = xfs_bwrite(mp, bp);
|
|
} else {
|
|
xfs_buf_relse(bp);
|
|
}
|
|
} else {
|
|
xfs_buf_relse(bp);
|
|
}
|
|
}
|
|
} else {
|
|
bp = xfs_getsb(mp, 0);
|
|
/*
|
|
* If the buffer is pinned then push on the log so
|
|
* we won't get stuck waiting in the write for
|
|
* someone, maybe ourselves, to flush the log.
|
|
* Even though we just pushed the log above, we
|
|
* did not have the superblock buffer locked at
|
|
* that point so it can become pinned in between
|
|
* there and here.
|
|
*/
|
|
if (XFS_BUF_ISPINNED(bp))
|
|
xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE);
|
|
if (flags & SYNC_WAIT)
|
|
XFS_BUF_UNASYNC(bp);
|
|
else
|
|
XFS_BUF_ASYNC(bp);
|
|
error = xfs_bwrite(mp, bp);
|
|
}
|
|
if (error) {
|
|
last_error = error;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If this is the periodic sync, then kick some entries out of
|
|
* the reference cache. This ensures that idle entries are
|
|
* eventually kicked out of the cache.
|
|
*/
|
|
if (flags & SYNC_REFCACHE) {
|
|
xfs_refcache_purge_some(mp);
|
|
}
|
|
|
|
/*
|
|
* Now check to see if the log needs a "dummy" transaction.
|
|
*/
|
|
|
|
if (!(flags & SYNC_REMOUNT) && xfs_log_need_covered(mp)) {
|
|
xfs_trans_t *tp;
|
|
xfs_inode_t *ip;
|
|
|
|
/*
|
|
* Put a dummy transaction in the log to tell
|
|
* recovery that all others are OK.
|
|
*/
|
|
tp = xfs_trans_alloc(mp, XFS_TRANS_DUMMY1);
|
|
if ((error = xfs_trans_reserve(tp, 0,
|
|
XFS_ICHANGE_LOG_RES(mp),
|
|
0, 0, 0))) {
|
|
xfs_trans_cancel(tp, 0);
|
|
return error;
|
|
}
|
|
|
|
ip = mp->m_rootip;
|
|
xfs_ilock(ip, XFS_ILOCK_EXCL);
|
|
|
|
xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
|
|
xfs_trans_ihold(tp, ip);
|
|
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
|
|
error = xfs_trans_commit(tp, 0, NULL);
|
|
xfs_iunlock(ip, XFS_ILOCK_EXCL);
|
|
xfs_log_force(mp, (xfs_lsn_t)0, log_flags);
|
|
}
|
|
|
|
/*
|
|
* When shutting down, we need to insure that the AIL is pushed
|
|
* to disk or the filesystem can appear corrupt from the PROM.
|
|
*/
|
|
if ((flags & (SYNC_CLOSE|SYNC_WAIT)) == (SYNC_CLOSE|SYNC_WAIT)) {
|
|
XFS_bflush(mp->m_ddev_targp);
|
|
if (mp->m_rtdev_targp) {
|
|
XFS_bflush(mp->m_rtdev_targp);
|
|
}
|
|
}
|
|
|
|
return XFS_ERROR(last_error);
|
|
}
|
|
|
|
/*
|
|
* xfs_vget - called by DMAPI and NFSD to get vnode from file handle
|
|
*/
|
|
STATIC int
|
|
xfs_vget(
|
|
bhv_desc_t *bdp,
|
|
vnode_t **vpp,
|
|
fid_t *fidp)
|
|
{
|
|
xfs_mount_t *mp = XFS_BHVTOM(bdp);
|
|
xfs_fid_t *xfid = (struct xfs_fid *)fidp;
|
|
xfs_inode_t *ip;
|
|
int error;
|
|
xfs_ino_t ino;
|
|
unsigned int igen;
|
|
|
|
/*
|
|
* Invalid. Since handles can be created in user space and passed in
|
|
* via gethandle(), this is not cause for a panic.
|
|
*/
|
|
if (xfid->xfs_fid_len != sizeof(*xfid) - sizeof(xfid->xfs_fid_len))
|
|
return XFS_ERROR(EINVAL);
|
|
|
|
ino = xfid->xfs_fid_ino;
|
|
igen = xfid->xfs_fid_gen;
|
|
|
|
/*
|
|
* NFS can sometimes send requests for ino 0. Fail them gracefully.
|
|
*/
|
|
if (ino == 0)
|
|
return XFS_ERROR(ESTALE);
|
|
|
|
error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_SHARED, &ip, 0);
|
|
if (error) {
|
|
*vpp = NULL;
|
|
return error;
|
|
}
|
|
|
|
if (ip == NULL) {
|
|
*vpp = NULL;
|
|
return XFS_ERROR(EIO);
|
|
}
|
|
|
|
if (ip->i_d.di_mode == 0 || ip->i_d.di_gen != igen) {
|
|
xfs_iput_new(ip, XFS_ILOCK_SHARED);
|
|
*vpp = NULL;
|
|
return XFS_ERROR(ENOENT);
|
|
}
|
|
|
|
*vpp = XFS_ITOV(ip);
|
|
xfs_iunlock(ip, XFS_ILOCK_SHARED);
|
|
return 0;
|
|
}
|
|
|
|
|
|
#define MNTOPT_LOGBUFS "logbufs" /* number of XFS log buffers */
|
|
#define MNTOPT_LOGBSIZE "logbsize" /* size of XFS log buffers */
|
|
#define MNTOPT_LOGDEV "logdev" /* log device */
|
|
#define MNTOPT_RTDEV "rtdev" /* realtime I/O device */
|
|
#define MNTOPT_BIOSIZE "biosize" /* log2 of preferred buffered io size */
|
|
#define MNTOPT_WSYNC "wsync" /* safe-mode nfs compatible mount */
|
|
#define MNTOPT_INO64 "ino64" /* force inodes into 64-bit range */
|
|
#define MNTOPT_NOALIGN "noalign" /* turn off stripe alignment */
|
|
#define MNTOPT_SWALLOC "swalloc" /* turn on stripe width allocation */
|
|
#define MNTOPT_SUNIT "sunit" /* data volume stripe unit */
|
|
#define MNTOPT_SWIDTH "swidth" /* data volume stripe width */
|
|
#define MNTOPT_NOUUID "nouuid" /* ignore filesystem UUID */
|
|
#define MNTOPT_MTPT "mtpt" /* filesystem mount point */
|
|
#define MNTOPT_IHASHSIZE "ihashsize" /* size of inode hash table */
|
|
#define MNTOPT_NORECOVERY "norecovery" /* don't run XFS recovery */
|
|
#define MNTOPT_NOLOGFLUSH "nologflush" /* don't hard flush on log writes */
|
|
#define MNTOPT_OSYNCISOSYNC "osyncisosync" /* o_sync is REALLY o_sync */
|
|
#define MNTOPT_64BITINODE "inode64" /* inodes can be allocated anywhere */
|
|
#define MNTOPT_IKEEP "ikeep" /* do not free empty inode clusters */
|
|
#define MNTOPT_NOIKEEP "noikeep" /* free empty inode clusters */
|
|
|
|
|
|
int
|
|
xfs_parseargs(
|
|
struct bhv_desc *bhv,
|
|
char *options,
|
|
struct xfs_mount_args *args,
|
|
int update)
|
|
{
|
|
struct vfs *vfsp = bhvtovfs(bhv);
|
|
char *this_char, *value, *eov;
|
|
int dsunit, dswidth, vol_dsunit, vol_dswidth;
|
|
int iosize;
|
|
|
|
#if 0 /* XXX: off by default, until some remaining issues ironed out */
|
|
args->flags |= XFSMNT_IDELETE; /* default to on */
|
|
#endif
|
|
|
|
if (!options)
|
|
return 0;
|
|
|
|
iosize = dsunit = dswidth = vol_dsunit = vol_dswidth = 0;
|
|
|
|
while ((this_char = strsep(&options, ",")) != NULL) {
|
|
if (!*this_char)
|
|
continue;
|
|
if ((value = strchr(this_char, '=')) != NULL)
|
|
*value++ = 0;
|
|
|
|
if (!strcmp(this_char, MNTOPT_LOGBUFS)) {
|
|
if (!value || !*value) {
|
|
printk("XFS: %s option requires an argument\n",
|
|
MNTOPT_LOGBUFS);
|
|
return EINVAL;
|
|
}
|
|
args->logbufs = simple_strtoul(value, &eov, 10);
|
|
} else if (!strcmp(this_char, MNTOPT_LOGBSIZE)) {
|
|
int last, in_kilobytes = 0;
|
|
|
|
if (!value || !*value) {
|
|
printk("XFS: %s option requires an argument\n",
|
|
MNTOPT_LOGBSIZE);
|
|
return EINVAL;
|
|
}
|
|
last = strlen(value) - 1;
|
|
if (value[last] == 'K' || value[last] == 'k') {
|
|
in_kilobytes = 1;
|
|
value[last] = '\0';
|
|
}
|
|
args->logbufsize = simple_strtoul(value, &eov, 10);
|
|
if (in_kilobytes)
|
|
args->logbufsize <<= 10;
|
|
} else if (!strcmp(this_char, MNTOPT_LOGDEV)) {
|
|
if (!value || !*value) {
|
|
printk("XFS: %s option requires an argument\n",
|
|
MNTOPT_LOGDEV);
|
|
return EINVAL;
|
|
}
|
|
strncpy(args->logname, value, MAXNAMELEN);
|
|
} else if (!strcmp(this_char, MNTOPT_MTPT)) {
|
|
if (!value || !*value) {
|
|
printk("XFS: %s option requires an argument\n",
|
|
MNTOPT_MTPT);
|
|
return EINVAL;
|
|
}
|
|
strncpy(args->mtpt, value, MAXNAMELEN);
|
|
} else if (!strcmp(this_char, MNTOPT_RTDEV)) {
|
|
if (!value || !*value) {
|
|
printk("XFS: %s option requires an argument\n",
|
|
MNTOPT_RTDEV);
|
|
return EINVAL;
|
|
}
|
|
strncpy(args->rtname, value, MAXNAMELEN);
|
|
} else if (!strcmp(this_char, MNTOPT_BIOSIZE)) {
|
|
if (!value || !*value) {
|
|
printk("XFS: %s option requires an argument\n",
|
|
MNTOPT_BIOSIZE);
|
|
return EINVAL;
|
|
}
|
|
iosize = simple_strtoul(value, &eov, 10);
|
|
args->flags |= XFSMNT_IOSIZE;
|
|
args->iosizelog = (uint8_t) iosize;
|
|
} else if (!strcmp(this_char, MNTOPT_IHASHSIZE)) {
|
|
if (!value || !*value) {
|
|
printk("XFS: %s option requires an argument\n",
|
|
this_char);
|
|
return EINVAL;
|
|
}
|
|
args->flags |= XFSMNT_IHASHSIZE;
|
|
args->ihashsize = simple_strtoul(value, &eov, 10);
|
|
} else if (!strcmp(this_char, MNTOPT_WSYNC)) {
|
|
args->flags |= XFSMNT_WSYNC;
|
|
} else if (!strcmp(this_char, MNTOPT_OSYNCISOSYNC)) {
|
|
args->flags |= XFSMNT_OSYNCISOSYNC;
|
|
} else if (!strcmp(this_char, MNTOPT_NORECOVERY)) {
|
|
args->flags |= XFSMNT_NORECOVERY;
|
|
} else if (!strcmp(this_char, MNTOPT_INO64)) {
|
|
args->flags |= XFSMNT_INO64;
|
|
#if !XFS_BIG_INUMS
|
|
printk("XFS: %s option not allowed on this system\n",
|
|
MNTOPT_INO64);
|
|
return EINVAL;
|
|
#endif
|
|
} else if (!strcmp(this_char, MNTOPT_NOALIGN)) {
|
|
args->flags |= XFSMNT_NOALIGN;
|
|
} else if (!strcmp(this_char, MNTOPT_SWALLOC)) {
|
|
args->flags |= XFSMNT_SWALLOC;
|
|
} else if (!strcmp(this_char, MNTOPT_SUNIT)) {
|
|
if (!value || !*value) {
|
|
printk("XFS: %s option requires an argument\n",
|
|
MNTOPT_SUNIT);
|
|
return EINVAL;
|
|
}
|
|
dsunit = simple_strtoul(value, &eov, 10);
|
|
} else if (!strcmp(this_char, MNTOPT_SWIDTH)) {
|
|
if (!value || !*value) {
|
|
printk("XFS: %s option requires an argument\n",
|
|
MNTOPT_SWIDTH);
|
|
return EINVAL;
|
|
}
|
|
dswidth = simple_strtoul(value, &eov, 10);
|
|
} else if (!strcmp(this_char, MNTOPT_64BITINODE)) {
|
|
args->flags &= ~XFSMNT_32BITINODES;
|
|
#if !XFS_BIG_INUMS
|
|
printk("XFS: %s option not allowed on this system\n",
|
|
MNTOPT_64BITINODE);
|
|
return EINVAL;
|
|
#endif
|
|
} else if (!strcmp(this_char, MNTOPT_NOUUID)) {
|
|
args->flags |= XFSMNT_NOUUID;
|
|
} else if (!strcmp(this_char, MNTOPT_NOLOGFLUSH)) {
|
|
args->flags |= XFSMNT_NOLOGFLUSH;
|
|
} else if (!strcmp(this_char, MNTOPT_IKEEP)) {
|
|
args->flags &= ~XFSMNT_IDELETE;
|
|
} else if (!strcmp(this_char, MNTOPT_NOIKEEP)) {
|
|
args->flags |= XFSMNT_IDELETE;
|
|
} else if (!strcmp(this_char, "osyncisdsync")) {
|
|
/* no-op, this is now the default */
|
|
printk("XFS: osyncisdsync is now the default, option is deprecated.\n");
|
|
} else if (!strcmp(this_char, "irixsgid")) {
|
|
printk("XFS: irixsgid is now a sysctl(2) variable, option is deprecated.\n");
|
|
} else {
|
|
printk("XFS: unknown mount option [%s].\n", this_char);
|
|
return EINVAL;
|
|
}
|
|
}
|
|
|
|
if (args->flags & XFSMNT_NORECOVERY) {
|
|
if ((vfsp->vfs_flag & VFS_RDONLY) == 0) {
|
|
printk("XFS: no-recovery mounts must be read-only.\n");
|
|
return EINVAL;
|
|
}
|
|
}
|
|
|
|
if ((args->flags & XFSMNT_NOALIGN) && (dsunit || dswidth)) {
|
|
printk(
|
|
"XFS: sunit and swidth options incompatible with the noalign option\n");
|
|
return EINVAL;
|
|
}
|
|
|
|
if ((dsunit && !dswidth) || (!dsunit && dswidth)) {
|
|
printk("XFS: sunit and swidth must be specified together\n");
|
|
return EINVAL;
|
|
}
|
|
|
|
if (dsunit && (dswidth % dsunit != 0)) {
|
|
printk(
|
|
"XFS: stripe width (%d) must be a multiple of the stripe unit (%d)\n",
|
|
dswidth, dsunit);
|
|
return EINVAL;
|
|
}
|
|
|
|
if ((args->flags & XFSMNT_NOALIGN) != XFSMNT_NOALIGN) {
|
|
if (dsunit) {
|
|
args->sunit = dsunit;
|
|
args->flags |= XFSMNT_RETERR;
|
|
} else {
|
|
args->sunit = vol_dsunit;
|
|
}
|
|
dswidth ? (args->swidth = dswidth) :
|
|
(args->swidth = vol_dswidth);
|
|
} else {
|
|
args->sunit = args->swidth = 0;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
xfs_showargs(
|
|
struct bhv_desc *bhv,
|
|
struct seq_file *m)
|
|
{
|
|
static struct proc_xfs_info {
|
|
int flag;
|
|
char *str;
|
|
} xfs_info[] = {
|
|
/* the few simple ones we can get from the mount struct */
|
|
{ XFS_MOUNT_WSYNC, "," MNTOPT_WSYNC },
|
|
{ XFS_MOUNT_INO64, "," MNTOPT_INO64 },
|
|
{ XFS_MOUNT_NOALIGN, "," MNTOPT_NOALIGN },
|
|
{ XFS_MOUNT_SWALLOC, "," MNTOPT_SWALLOC },
|
|
{ XFS_MOUNT_NOUUID, "," MNTOPT_NOUUID },
|
|
{ XFS_MOUNT_NORECOVERY, "," MNTOPT_NORECOVERY },
|
|
{ XFS_MOUNT_OSYNCISOSYNC, "," MNTOPT_OSYNCISOSYNC },
|
|
{ XFS_MOUNT_NOLOGFLUSH, "," MNTOPT_NOLOGFLUSH },
|
|
{ XFS_MOUNT_IDELETE, "," MNTOPT_NOIKEEP },
|
|
{ 0, NULL }
|
|
};
|
|
struct proc_xfs_info *xfs_infop;
|
|
struct xfs_mount *mp = XFS_BHVTOM(bhv);
|
|
|
|
for (xfs_infop = xfs_info; xfs_infop->flag; xfs_infop++) {
|
|
if (mp->m_flags & xfs_infop->flag)
|
|
seq_puts(m, xfs_infop->str);
|
|
}
|
|
|
|
if (mp->m_flags & XFS_MOUNT_IHASHSIZE)
|
|
seq_printf(m, "," MNTOPT_IHASHSIZE "=%d", mp->m_ihsize);
|
|
|
|
if (mp->m_flags & XFS_MOUNT_DFLT_IOSIZE)
|
|
seq_printf(m, "," MNTOPT_BIOSIZE "=%d", mp->m_writeio_log);
|
|
|
|
if (mp->m_logbufs > 0)
|
|
seq_printf(m, "," MNTOPT_LOGBUFS "=%d", mp->m_logbufs);
|
|
|
|
if (mp->m_logbsize > 0)
|
|
seq_printf(m, "," MNTOPT_LOGBSIZE "=%d", mp->m_logbsize);
|
|
|
|
if (mp->m_ddev_targp != mp->m_logdev_targp)
|
|
seq_printf(m, "," MNTOPT_LOGDEV "=%s",
|
|
XFS_BUFTARG_NAME(mp->m_logdev_targp));
|
|
|
|
if (mp->m_rtdev_targp && mp->m_ddev_targp != mp->m_rtdev_targp)
|
|
seq_printf(m, "," MNTOPT_RTDEV "=%s",
|
|
XFS_BUFTARG_NAME(mp->m_rtdev_targp));
|
|
|
|
if (mp->m_dalign > 0)
|
|
seq_printf(m, "," MNTOPT_SUNIT "=%d",
|
|
(int)XFS_FSB_TO_BB(mp, mp->m_dalign));
|
|
|
|
if (mp->m_swidth > 0)
|
|
seq_printf(m, "," MNTOPT_SWIDTH "=%d",
|
|
(int)XFS_FSB_TO_BB(mp, mp->m_swidth));
|
|
|
|
if (!(mp->m_flags & XFS_MOUNT_32BITINOOPT))
|
|
seq_printf(m, "," MNTOPT_64BITINODE);
|
|
|
|
return 0;
|
|
}
|
|
|
|
STATIC void
|
|
xfs_freeze(
|
|
bhv_desc_t *bdp)
|
|
{
|
|
xfs_mount_t *mp = XFS_BHVTOM(bdp);
|
|
|
|
while (atomic_read(&mp->m_active_trans) > 0)
|
|
delay(100);
|
|
|
|
/* Push the superblock and write an unmount record */
|
|
xfs_log_unmount_write(mp);
|
|
xfs_unmountfs_writesb(mp);
|
|
}
|
|
|
|
|
|
vfsops_t xfs_vfsops = {
|
|
BHV_IDENTITY_INIT(VFS_BHV_XFS,VFS_POSITION_XFS),
|
|
.vfs_parseargs = xfs_parseargs,
|
|
.vfs_showargs = xfs_showargs,
|
|
.vfs_mount = xfs_mount,
|
|
.vfs_unmount = xfs_unmount,
|
|
.vfs_mntupdate = xfs_mntupdate,
|
|
.vfs_root = xfs_root,
|
|
.vfs_statvfs = xfs_statvfs,
|
|
.vfs_sync = xfs_sync,
|
|
.vfs_vget = xfs_vget,
|
|
.vfs_dmapiops = (vfs_dmapiops_t)fs_nosys,
|
|
.vfs_quotactl = (vfs_quotactl_t)fs_nosys,
|
|
.vfs_init_vnode = xfs_initialize_vnode,
|
|
.vfs_force_shutdown = xfs_do_force_shutdown,
|
|
.vfs_freeze = xfs_freeze,
|
|
};
|