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OpenCloudOS-Kernel
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ceph: initialize sb->s_bdi, bdi_unregister after kill_anon_super 

Writeback doesn't work without the bdi set, and writeback on
umount doesn't work if we unregister the bdi too early.

Signed-off-by: Sage Weil <sage@newdream.net>
This commit is contained in:
Sage Weil 2009-10-14 14:09:07 -07:00
parent c89136ea42
commit f2cf418cec
1 changed files with 3 additions and 1 deletions
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4
fs/ceph/super.c
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@ -97,6 +97,7 @@ static int ceph_syncfs(struct super_block *sb, int wait)
dout("sync_fs %d\n", wait);
ceph_osdc_sync(&ceph_client(sb)->osdc);
ceph_mdsc_sync(&ceph_client(sb)->mdsc);
dout("sync_fs %d done\n", wait);
return 0;
}
@ -777,6 +778,7 @@ static int ceph_init_bdi(struct super_block *sb, struct ceph_client *client)
err = bdi_init(&client->backing_dev_info);
if (err < 0)
return err;
sb->s_bdi = &client->backing_dev_info;
/* set ra_pages based on rsize mount option? */
if (client->mount_args.rsize >= PAGE_CACHE_SIZE)
@ -861,8 +863,8 @@ static void ceph_kill_sb(struct super_block *s)
struct ceph_client *client = ceph_sb_to_client(s);
dout("kill_sb %p\n", s);
ceph_mdsc_pre_umount(&client->mdsc);
bdi_unregister(&client->backing_dev_info);
kill_anon_super(s); /* will call put_super after sb is r/o */
bdi_unregister(&client->backing_dev_info);
bdi_destroy(&client->backing_dev_info);
ceph_destroy_client(client);
}