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authorDave Chinner <dchinner@redhat.com>2011-03-26 09:14:57 +1100
committerDave Chinner <david@fromorbit.com>2011-03-26 09:14:57 +1100
commit704b2907c2d47ceb187c0e25a6bbc2174b198f2f (patch)
tree0ca2703390a5ba43998eca28d85d77ee49a790f6 /fs/xfs
parent7401aafd5019d32a888e5f27332cf580945574bf (diff)
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xfs: register the inode cache shrinker before quotachecks
During mount, we can do a quotacheck that involves a bulkstat pass on all inodes. If there are more inodes in the filesystem than can be held in memory, we require the inode cache shrinker to run to ensure that we don't run out of memory. Unfortunately, the inode cache shrinker is not registered until we get to the end of the superblock setup process, which is after a quotacheck is run if it is needed. Hence we need to register the inode cache shrinker earlier in the mount process so that we don't OOM during mount. This requires that we also initialise the syncd work before we register the shrinker, so we nee dto juggle that around as well. While there, make sure that we have set up the block sizes in the VFS superblock correctly before the quotacheck is run so that any inodes that are cached as a result of the quotacheck have their block size fields set up correctly. Cc: stable@kernel.org Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Alex Elder <aelder@sgi.com>
Diffstat (limited to 'fs/xfs')
-rw-r--r--fs/xfs/linux-2.6/xfs_super.c34
1 files changed, 24 insertions, 10 deletions
diff --git a/fs/xfs/linux-2.6/xfs_super.c b/fs/xfs/linux-2.6/xfs_super.c
index 8a70b2a17d6..1ba5c451da3 100644
--- a/fs/xfs/linux-2.6/xfs_super.c
+++ b/fs/xfs/linux-2.6/xfs_super.c
@@ -1539,10 +1539,14 @@ xfs_fs_fill_super(
if (error)
goto out_free_sb;
- error = xfs_mountfs(mp);
- if (error)
- goto out_filestream_unmount;
-
+ /*
+ * we must configure the block size in the superblock before we run the
+ * full mount process as the mount process can lookup and cache inodes.
+ * For the same reason we must also initialise the syncd and register
+ * the inode cache shrinker so that inodes can be reclaimed during
+ * operations like a quotacheck that iterate all inodes in the
+ * filesystem.
+ */
sb->s_magic = XFS_SB_MAGIC;
sb->s_blocksize = mp->m_sb.sb_blocksize;
sb->s_blocksize_bits = ffs(sb->s_blocksize) - 1;
@@ -1550,6 +1554,16 @@ xfs_fs_fill_super(
sb->s_time_gran = 1;
set_posix_acl_flag(sb);
+ error = xfs_syncd_init(mp);
+ if (error)
+ goto out_filestream_unmount;
+
+ xfs_inode_shrinker_register(mp);
+
+ error = xfs_mountfs(mp);
+ if (error)
+ goto out_syncd_stop;
+
root = igrab(VFS_I(mp->m_rootip));
if (!root) {
error = ENOENT;
@@ -1565,14 +1579,11 @@ xfs_fs_fill_super(
goto fail_vnrele;
}
- error = xfs_syncd_init(mp);
- if (error)
- goto fail_vnrele;
-
- xfs_inode_shrinker_register(mp);
-
return 0;
+ out_syncd_stop:
+ xfs_inode_shrinker_unregister(mp);
+ xfs_syncd_stop(mp);
out_filestream_unmount:
xfs_filestream_unmount(mp);
out_free_sb:
@@ -1596,6 +1607,9 @@ xfs_fs_fill_super(
}
fail_unmount:
+ xfs_inode_shrinker_unregister(mp);
+ xfs_syncd_stop(mp);
+
/*
* Blow away any referenced inode in the filestreams cache.
* This can and will cause log traffic as inodes go inactive