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| author | Josef Bacik <josef@toxicpanda.com> | 2017-09-29 15:43:52 -0400 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2017-10-30 12:28:00 +0100 |
| commit | 2eadaa22c17ac3c546850f70d9d20fa19459dbce (patch) | |
| tree | 9b5751d5d4b6f7c49316372e86f28b1a1daad9b6 /fs/btrfs | |
| parent | 7c777430e855898461d54efd14b3942c763ee8de (diff) | |
| download | blackbird-obmc-linux-2eadaa22c17ac3c546850f70d9d20fa19459dbce.tar.gz blackbird-obmc-linux-2eadaa22c17ac3c546850f70d9d20fa19459dbce.zip | |
btrfs: add a helper to return a head ref
Simplify the error handling in __btrfs_run_delayed_refs by breaking out
the code used to return a head back to the delayed_refs tree for
processing into a helper function.
Signed-off-by: Josef Bacik <jbacik@fb.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs')
| -rw-r--r-- | fs/btrfs/extent-tree.c | 29 |
1 files changed, 14 insertions, 15 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 52d246994341..3e4a6a4b0505 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -2575,6 +2575,16 @@ select_delayed_ref(struct btrfs_delayed_ref_head *head) return ref; } +static void unselect_delayed_ref_head(struct btrfs_delayed_ref_root *delayed_refs, + struct btrfs_delayed_ref_head *head) +{ + spin_lock(&delayed_refs->lock); + head->processing = 0; + delayed_refs->num_heads_ready++; + spin_unlock(&delayed_refs->lock); + btrfs_delayed_ref_unlock(head); +} + /* * Returns 0 on success or if called with an already aborted transaction. * Returns -ENOMEM or -EIO on failure and will abort the transaction. @@ -2648,11 +2658,7 @@ static noinline int __btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, if (ref && ref->seq && btrfs_check_delayed_seq(fs_info, delayed_refs, ref->seq)) { spin_unlock(&locked_ref->lock); - spin_lock(&delayed_refs->lock); - locked_ref->processing = 0; - delayed_refs->num_heads_ready++; - spin_unlock(&delayed_refs->lock); - btrfs_delayed_ref_unlock(locked_ref); + unselect_delayed_ref_head(delayed_refs, locked_ref); locked_ref = NULL; cond_resched(); count++; @@ -2698,14 +2704,11 @@ static noinline int __btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, */ if (must_insert_reserved) locked_ref->must_insert_reserved = 1; - spin_lock(&delayed_refs->lock); - locked_ref->processing = 0; - delayed_refs->num_heads_ready++; - spin_unlock(&delayed_refs->lock); + unselect_delayed_ref_head(delayed_refs, + locked_ref); btrfs_debug(fs_info, "run_delayed_extent_op returned %d", ret); - btrfs_delayed_ref_unlock(locked_ref); return ret; } continue; @@ -2763,11 +2766,7 @@ static noinline int __btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, btrfs_free_delayed_extent_op(extent_op); if (ret) { - spin_lock(&delayed_refs->lock); - locked_ref->processing = 0; - delayed_refs->num_heads_ready++; - spin_unlock(&delayed_refs->lock); - btrfs_delayed_ref_unlock(locked_ref); + unselect_delayed_ref_head(delayed_refs, locked_ref); btrfs_put_delayed_ref(ref); btrfs_debug(fs_info, "run_one_delayed_ref returned %d", ret); |
