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authorJosef Bacik <josef@redhat.com>2012-06-15 12:19:48 -0600
committerChris Mason <chris.mason@fusionio.com>2012-06-21 07:19:36 -0400
commitcb77fcd88569cd2b7b25ecd4086ea932a53be9b3 (patch)
tree331330ac068ce4028e8d97bb47388ca67cf7430b
parente18fca734278784bd6591de63ca148cc27344ca9 (diff)
Btrfs: delay iput with async extents
There is some concern that these iput()'s could be the final iputs and could induce lockups on people waiting on writeback. This would happen in the rare case that we don't create ordered extents because of an error, but it is theoretically possible and we already have a mechanism to deal with this so just make them delayed iputs to negate any worry. Signed-off-by: Josef Bacik <josef@redhat.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
-rw-r--r--fs/btrfs/inode.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 3f2c8cbe5ba6..4a4f2d59a64b 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -987,7 +987,7 @@ static noinline void async_cow_start(struct btrfs_work *work)
async_cow->start, async_cow->end, async_cow,
&num_added);
if (num_added == 0) {
- iput(async_cow->inode);
+ btrfs_add_delayed_iput(async_cow->inode);
async_cow->inode = NULL;
}
}
@@ -1023,7 +1023,7 @@ static noinline void async_cow_free(struct btrfs_work *work)
struct async_cow *async_cow;
async_cow = container_of(work, struct async_cow, work);
if (async_cow->inode)
- iput(async_cow->inode);
+ btrfs_add_delayed_iput(async_cow->inode);
kfree(async_cow);
}