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Ryusuke Konishi b1f6a4f294 nilfs2: add routines to redirect access to buffers of DAT file ... During garbage collection (GC), DAT file, which converts virtual block number to real block number, may return disk block number that is not yet written to the device. To avoid access to unwritten blocks, the current implementation stores changes to the caches of GCDAT during GC and atomically commit the changes into the DAT file after they are written to the device. This patch, instead, adds a function that makes a copy of specified buffer and stores it in nilfs_shadow_map, and a function to get the backup copy as needed (nilfs_mdt_freeze_buffer and nilfs_mdt_get_frozen_buffer respectively). Before DAT changes block number in an entry block, it makes a copy and redirect access to the buffer so that address conversion function (i.e. nilfs_dat_translate) refers to the old address saved in the copy. This patch gives requisites for such redirection. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>		2010-10-23 09:24:37 +09:00
..
Kconfig	Revert "task_struct: make journal_info conditional"	2009-12-17 13:23:24 -08:00
Makefile	nilfs2: update makefile and Kconfig	2009-04-07 08:31:16 -07:00
alloc.c	nilfs2: add kernel doc comments to persistent object allocator functions	2010-05-10 11:32:31 +09:00
alloc.h	nilfs2: add kernel doc comments to persistent object allocator functions	2010-05-10 11:32:31 +09:00
bmap.c	nilfs2: add routines to save and restore bmap state	2010-10-23 09:24:37 +09:00
bmap.h	nilfs2: add routines to save and restore bmap state	2010-10-23 09:24:37 +09:00
btnode.c	nilfs2: add routines to roll back state of DAT file	2010-10-23 09:24:37 +09:00
btnode.h	nilfs2: add read ahead mode to nilfs_btnode_submit_block	2010-07-23 10:02:15 +09:00
btree.c	nilfs2: apply read-ahead for nilfs_btree_lookup_contig	2010-07-23 10:02:16 +09:00
btree.h	nilfs2: get rid of nilfs_bmap_union	2010-07-23 10:02:14 +09:00
cpfile.c	nilfs2: trivial coding style fix	2009-12-25 13:01:50 +09:00
cpfile.h	nilfs2: separate read method of meta data files on super root block	2009-11-20 10:05:48 +09:00
dat.c	nilfs2: fix various typos in comments	2010-03-14 10:29:51 +09:00
dat.h	nilfs2: separate read method of meta data files on super root block	2009-11-20 10:05:48 +09:00
dir.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6	2010-08-10 11:26:52 -07:00
direct.c	nilfs2: remove redundant pointer checks in bmap lookup functions	2010-07-23 10:02:14 +09:00
direct.h	nilfs2: get rid of nilfs_bmap_union	2010-07-23 10:02:14 +09:00
export.h	nilfs2: make snapshots in checkpoint tree exportable	2010-10-23 09:24:34 +09:00
file.c	drop unused dentry argument to ->fsync	2010-05-27 22:05:02 -04:00
gcdat.c	simplify checks for I_CLEAR/I_FREEING	2010-08-09 16:47:44 -04:00
gcinode.c	nilfs2: do not allocate nilfs_mdt_info structure to gc-inodes	2010-10-23 09:24:37 +09:00
ifile.c	nilfs2: add palloc cache to ifile	2009-11-20 10:05:50 +09:00
ifile.h	nilfs2: separate constructor of metadata files	2009-11-20 10:05:48 +09:00
inode.c	nilfs2: allow nilfs_clear_inode to clear metadata file inodes	2010-10-23 09:24:37 +09:00
ioctl.c	nilfs2: simplify life cycle management of nilfs object	2010-10-23 09:24:36 +09:00
mdt.c	nilfs2: add routines to redirect access to buffers of DAT file	2010-10-23 09:24:37 +09:00
mdt.h	nilfs2: add routines to redirect access to buffers of DAT file	2010-10-23 09:24:37 +09:00
namei.c	nilfs2: deny write access to inodes in snapshots	2010-10-23 09:24:35 +09:00
nilfs.h	nilfs2: deny write access to inodes in snapshots	2010-10-23 09:24:35 +09:00
page.c	nilfs2: add routines to redirect access to buffers of DAT file	2010-10-23 09:24:37 +09:00
page.h	nilfs2: add routines to redirect access to buffers of DAT file	2010-10-23 09:24:37 +09:00
recovery.c	nilfs2: use root object to get ifile	2010-10-23 09:24:35 +09:00
sb.h	nilfs2: do not allocate multiple super block instances for a device	2010-10-23 09:24:36 +09:00
segbuf.c	block: unify flags for struct bio and struct request	2010-08-07 18:20:39 +02:00
segbuf.h	nilfs2: get rid of macros for segment summary information	2010-07-23 10:02:09 +09:00
segment.c	nilfs2: add routines to redirect access to buffers of DAT file	2010-10-23 09:24:37 +09:00
segment.h	nilfs2: use root object to get ifile	2010-10-23 09:24:35 +09:00
sufile.c	nilfs2: fix various typos in comments	2010-03-14 10:29:51 +09:00
sufile.h	nilfs2: clean up get/put function of a segment usage	2009-11-20 10:05:51 +09:00
super.c	nilfs2: simplify life cycle management of nilfs object	2010-10-23 09:24:36 +09:00
the_nilfs.c	nilfs2: simplify life cycle management of nilfs object	2010-10-23 09:24:36 +09:00
the_nilfs.h	nilfs2: simplify life cycle management of nilfs object	2010-10-23 09:24:36 +09:00