From mboxrd@z Thu Jan 1 00:00:00 1970 From: Josef Bacik Subject: [PATCH] Btrfs: check unused against how much space we actually want Date: Thu, 22 Sep 2011 14:30:44 -0400 Message-ID: <1316716244-15936-1-git-send-email-josef@redhat.com> To: linux-btrfs@vger.kernel.org Return-path: List-ID: There is a bug that may lead to early ENOSPC in our reservation code. We've been checking against num_bytes which may be above and beyond what we want to actually reserve, which could give us a false ENOSPC. Fix this by making sure the unused space is above how much we want to reserve and not how much we're trying to flush. Thanks, Signed-off-by: Josef Bacik --- fs/btrfs/extent-tree.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 5498bda..fd65f6b 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -3472,7 +3472,7 @@ again: */ if (unused <= space_info->total_bytes) { unused = space_info->total_bytes - unused; - if (unused >= num_bytes) { + if (unused >= orig_bytes) { space_info->bytes_may_use += orig_bytes; ret = 0; } else { -- 1.7.5.2