afs: add bdi backing to mount session.
This ensures that dirty data gets flushed properly. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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0ed07ddb56
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e1da022275
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@ -19,6 +19,7 @@
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#include <linux/workqueue.h>
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#include <linux/workqueue.h>
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#include <linux/sched.h>
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#include <linux/sched.h>
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#include <linux/fscache.h>
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#include <linux/fscache.h>
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#include <linux/backing-dev.h>
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#include "afs.h"
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#include "afs.h"
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#include "afs_vl.h"
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#include "afs_vl.h"
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@ -313,6 +314,7 @@ struct afs_volume {
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unsigned short rjservers; /* number of servers discarded due to -ENOMEDIUM */
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unsigned short rjservers; /* number of servers discarded due to -ENOMEDIUM */
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struct afs_server *servers[8]; /* servers on which volume resides (ordered) */
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struct afs_server *servers[8]; /* servers on which volume resides (ordered) */
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struct rw_semaphore server_sem; /* lock for accessing current server */
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struct rw_semaphore server_sem; /* lock for accessing current server */
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struct backing_dev_info bdi;
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};
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};
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/*
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/*
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@ -311,6 +311,7 @@ static int afs_fill_super(struct super_block *sb, void *data)
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sb->s_magic = AFS_FS_MAGIC;
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sb->s_magic = AFS_FS_MAGIC;
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sb->s_op = &afs_super_ops;
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sb->s_op = &afs_super_ops;
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sb->s_fs_info = as;
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sb->s_fs_info = as;
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sb->s_bdi = &as->volume->bdi;
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/* allocate the root inode and dentry */
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/* allocate the root inode and dentry */
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fid.vid = as->volume->vid;
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fid.vid = as->volume->vid;
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@ -106,6 +106,10 @@ struct afs_volume *afs_volume_lookup(struct afs_mount_params *params)
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volume->cell = params->cell;
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volume->cell = params->cell;
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volume->vid = vlocation->vldb.vid[params->type];
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volume->vid = vlocation->vldb.vid[params->type];
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ret = bdi_setup_and_register(&volume->bdi, "afs", BDI_CAP_MAP_COPY);
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if (ret)
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goto error_bdi;
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init_rwsem(&volume->server_sem);
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init_rwsem(&volume->server_sem);
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/* look up all the applicable server records */
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/* look up all the applicable server records */
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@ -151,6 +155,8 @@ error:
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return ERR_PTR(ret);
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return ERR_PTR(ret);
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error_discard:
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error_discard:
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bdi_destroy(&volume->bdi);
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error_bdi:
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up_write(¶ms->cell->vl_sem);
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up_write(¶ms->cell->vl_sem);
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for (loop = volume->nservers - 1; loop >= 0; loop--)
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for (loop = volume->nservers - 1; loop >= 0; loop--)
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@ -200,6 +206,7 @@ void afs_put_volume(struct afs_volume *volume)
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for (loop = volume->nservers - 1; loop >= 0; loop--)
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for (loop = volume->nservers - 1; loop >= 0; loop--)
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afs_put_server(volume->servers[loop]);
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afs_put_server(volume->servers[loop]);
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bdi_destroy(&volume->bdi);
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kfree(volume);
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kfree(volume);
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_leave(" [destroyed]");
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_leave(" [destroyed]");
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