diff options
| author | Josef Bacik <josef@toxicpanda.com> | 2022-09-12 12:27:43 -0700 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2022-09-29 17:08:26 +0200 |
| commit | 26ce91144631a402ff82c93358d8880326a7caa3 (patch) | |
| tree | dbd450729f59e3b1e947dd2e4ba8a69ed175c1f6 /fs/btrfs/extent-tree.c | |
| parent | 857bc13f857aea957ae038b2b43c28560976024a (diff) | |
btrfs: make can_nocow_extent nowait compatible
If we have NOWAIT specified on our IOCB and we're writing into a
PREALLOC or NOCOW extent then we need to be able to tell
can_nocow_extent that we don't want to wait on any locks or metadata IO.
Fix can_nocow_extent to allow for NOWAIT.
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Stefan Roesch <shr@fb.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/extent-tree.c')
| -rw-r--r-- | fs/btrfs/extent-tree.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 9818285dface..ae94be318a0f 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -2220,6 +2220,12 @@ static noinline int check_delayed_ref(struct btrfs_root *root, } if (!mutex_trylock(&head->mutex)) { + if (path->nowait) { + spin_unlock(&delayed_refs->lock); + btrfs_put_transaction(cur_trans); + return -EAGAIN; + } + refcount_inc(&head->refs); spin_unlock(&delayed_refs->lock); |