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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>
hifive-unleashed-5.1
Liu Bo 2012-06-14 02:23:21 -06:00 committed by Chris Mason
parent 6e841e32b1
commit ed0eaa1498
1 changed files with 11 additions and 0 deletions
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11
fs/btrfs/disk-io.c
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@ -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;
}