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authorLiu Bo <liubo2009@cn.fujitsu.com>2012-06-14 02:23:21 -0600
committerChris Mason <chris.mason@fusionio.com>2012-06-15 11:42:27 -0400
commited0eaa14981e87a1e185b61e4ef621c440e3930c (patch)
tree2fa743dc69cb3810bb577494f8ee6f1b3f4f9323
parent6e841e32b159e298debbb2cb0e9158e894fcaf05 (diff)
downloadlinux-stericsson-ed0eaa14981e87a1e185b61e4ef621c440e3930c.tar.gz
Btrfs: make sure that we've made everything in pinned tree clean
Since we have two trees for recording pinned extents, we need to go through both of them to make sure that we've done everything clean. Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
-rw-r--r--fs/btrfs/disk-io.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 63a36232788b..ffdd76bf05d4 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -3557,8 +3557,10 @@ static int btrfs_destroy_pinned_extent(struct btrfs_root *root,
u64 start;
u64 end;
int ret;
+ bool loop = true;
unpin = pinned_extents;
+again:
while (1) {
ret = find_first_extent_bit(unpin, 0, &start, &end,
EXTENT_DIRTY);
@@ -3576,6 +3578,15 @@ static int btrfs_destroy_pinned_extent(struct btrfs_root *root,
cond_resched();
}
+ if (loop) {
+ if (unpin == &root->fs_info->freed_extents[0])
+ unpin = &root->fs_info->freed_extents[1];
+ else
+ unpin = &root->fs_info->freed_extents[0];
+ loop = false;
+ goto again;
+ }
+
return 0;
}