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authorLinus Torvalds <torvalds@linux-foundation.org>2012-04-13 19:41:27 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-04-13 19:41:27 -0700
commit659e45d8a0aca8619f0d308448c480279fa002b6 (patch)
tree4475e6a64568e81d9418265eb4932f017e7a61a9 /fs/btrfs/free-space-cache.c
parentc104f1fa1ecf4ee0fc06e31b1f77630b2551be81 (diff)
parentd53ba47484ed6245e640ee4bfe9d21e9bfc15765 (diff)
Merge branch 'for-linus-min' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
Pull the minimal btrfs branch from Chris Mason: "We have a use-after-free in there, along with errors when mount -o discard is enabled, and a BUG_ON(we should compile with UP more often)." * 'for-linus-min' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: Btrfs: use commit root when loading free space cache Btrfs: fix use-after-free in __btrfs_end_transaction Btrfs: check return value of bio_alloc() properly Btrfs: remove lock assert from get_restripe_target() Btrfs: fix eof while discarding extents Btrfs: fix uninit variable in repair_eb_io_failure Revert "Btrfs: increase the global block reserve estimates"
Diffstat (limited to 'fs/btrfs/free-space-cache.c')
-rw-r--r--fs/btrfs/free-space-cache.c9
1 files changed, 2 insertions, 7 deletions
diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
index e88330d3df5..202008ec367 100644
--- a/fs/btrfs/free-space-cache.c
+++ b/fs/btrfs/free-space-cache.c
@@ -748,13 +748,6 @@ int load_free_space_cache(struct btrfs_fs_info *fs_info,
u64 used = btrfs_block_group_used(&block_group->item);
/*
- * If we're unmounting then just return, since this does a search on the
- * normal root and not the commit root and we could deadlock.
- */
- if (btrfs_fs_closing(fs_info))
- return 0;
-
- /*
* If this block group has been marked to be cleared for one reason or
* another then we can't trust the on disk cache, so just return.
*/
@@ -768,6 +761,8 @@ int load_free_space_cache(struct btrfs_fs_info *fs_info,
path = btrfs_alloc_path();
if (!path)
return 0;
+ path->search_commit_root = 1;
+ path->skip_locking = 1;
inode = lookup_free_space_inode(root, block_group, path);
if (IS_ERR(inode)) {