diff options
| author | Josef Bacik <jbacik@fb.com> | 2018-12-03 10:20:31 -0500 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2018-12-17 14:51:46 +0100 |
| commit | bedc661760a9837d592070669b296ab58e8f40c9 (patch) | |
| tree | ee10171a2963c617f9359dbedc9475cef353f4b1 /fs | |
| parent | 07c47775f410168c259494ecb8f62cee0a84ec81 (diff) | |
| download | linux-bedc661760a9837d592070669b296ab58e8f40c9.tar.bz2 | |
btrfs: cleanup extent_op handling
The cleanup_extent_op function actually would run the extent_op if it
needed running, which made the name sort of a misnomer. Change it to
run_and_cleanup_extent_op, and move the actual cleanup work to
cleanup_extent_op so it can be used by check_ref_cleanup() in order to
unify the extent op handling.
Reviewed-by: Lu Fengqi <lufq.fnst@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/btrfs/extent-tree.c | 35 |
1 files changed, 22 insertions, 13 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index ea1a85ee2c5d..32a68b6bbeea 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -2424,19 +2424,32 @@ static void unselect_delayed_ref_head(struct btrfs_delayed_ref_root *delayed_ref btrfs_delayed_ref_unlock(head); } -static int cleanup_extent_op(struct btrfs_trans_handle *trans, - struct btrfs_delayed_ref_head *head) +static struct btrfs_delayed_extent_op *cleanup_extent_op( + struct btrfs_delayed_ref_head *head) { struct btrfs_delayed_extent_op *extent_op = head->extent_op; - int ret; if (!extent_op) - return 0; - head->extent_op = NULL; + return NULL; + if (head->must_insert_reserved) { + head->extent_op = NULL; btrfs_free_delayed_extent_op(extent_op); - return 0; + return NULL; } + return extent_op; +} + +static int run_and_cleanup_extent_op(struct btrfs_trans_handle *trans, + struct btrfs_delayed_ref_head *head) +{ + struct btrfs_delayed_extent_op *extent_op; + int ret; + + extent_op = cleanup_extent_op(head); + if (!extent_op) + return 0; + head->extent_op = NULL; spin_unlock(&head->lock); ret = run_delayed_extent_op(trans, head, extent_op); btrfs_free_delayed_extent_op(extent_op); @@ -2488,7 +2501,7 @@ static int cleanup_ref_head(struct btrfs_trans_handle *trans, delayed_refs = &trans->transaction->delayed_refs; - ret = cleanup_extent_op(trans, head); + ret = run_and_cleanup_extent_op(trans, head); if (ret < 0) { unselect_delayed_ref_head(delayed_refs, head); btrfs_debug(fs_info, "run_delayed_extent_op returned %d", ret); @@ -6980,12 +6993,8 @@ static noinline int check_ref_cleanup(struct btrfs_trans_handle *trans, if (!RB_EMPTY_ROOT(&head->ref_tree.rb_root)) goto out; - if (head->extent_op) { - if (!head->must_insert_reserved) - goto out; - btrfs_free_delayed_extent_op(head->extent_op); - head->extent_op = NULL; - } + if (cleanup_extent_op(head) != NULL) + goto out; /* * waiting for the lock here would deadlock. If someone else has it |