diff mbox

[07/21] Btrfs: only check delayed ref usage in should_end_transaction

Message ID 1506714245-23072-8-git-send-email-jbacik@fb.com (mailing list archive)
State New, archived
Headers show

Commit Message

Josef Bacik Sept. 29, 2017, 7:43 p.m. UTC
We were only doing btrfs_check_space_for_delayed_refs() if the metadata
space was full, ie we couldn't allocate chunks.  This assumes we'll be
able to allocate chunks during transaction commit, but since nothing
does a LIMIT flush during the transaction commit this won't actually
happen unless we happen to run shy of actual space.  We already take
into account a full fs in btrfs_check_space_for_delayed_refs() so just
kill this extra check to make sure we're ending the transaction when we
need to.

Signed-off-by: Josef Bacik <jbacik@fb.com>
---
 fs/btrfs/transaction.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

Comments

David Sterba Oct. 13, 2017, 5:20 p.m. UTC | #1
On Fri, Sep 29, 2017 at 03:43:51PM -0400, Josef Bacik wrote:
> We were only doing btrfs_check_space_for_delayed_refs() if the metadata
> space was full, ie we couldn't allocate chunks.  This assumes we'll be
> able to allocate chunks during transaction commit, but since nothing
> does a LIMIT flush during the transaction commit this won't actually
> happen unless we happen to run shy of actual space.  We already take
> into account a full fs in btrfs_check_space_for_delayed_refs() so just
> kill this extra check to make sure we're ending the transaction when we
> need to.
> 
> Signed-off-by: Josef Bacik <jbacik@fb.com>

Reviewed-by: David Sterba <dsterba@suse.com>
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diff mbox

Patch

diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index 9c5f126064bd..68c3e1c04bca 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -797,8 +797,7 @@  static int should_end_transaction(struct btrfs_trans_handle *trans)
 {
 	struct btrfs_fs_info *fs_info = trans->fs_info;
 
-	if (fs_info->global_block_rsv.space_info->full &&
-	    btrfs_check_space_for_delayed_refs(trans, fs_info))
+	if (btrfs_check_space_for_delayed_refs(trans, fs_info))
 		return 1;
 
 	return !!btrfs_block_rsv_check(&fs_info->global_block_rsv, 5);