diff options
| author | Nikolay Borisov <nborisov@suse.com> | 2021-11-22 17:16:46 +0200 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2022-01-03 15:09:46 +0100 |
| commit | 167c0bd3775dc4ffedfd179c370994226d02a5c9 (patch) | |
| tree | f265bcb923886bd8492089a939ce2ea6157217e3 | |
| parent | bbf27275f246a105a1e906f22a4f814f89bf4b55 (diff) | |
btrfs: get next entry in tree_search_offset before doing checks
This is a small optimisation since the currently 'entry' is already
checked in the if () {} else if {} construct above the loop. In essence
the first iteration of the final while loop is redundant. To eliminate
this extra check simply get the next entry at the beginning of the loop.
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
| -rw-r--r-- | fs/btrfs/free-space-cache.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c index 3920beb02131..bbe0b36a452a 100644 --- a/fs/btrfs/free-space-cache.c +++ b/fs/btrfs/free-space-cache.c @@ -1730,6 +1730,10 @@ tree_search_offset(struct btrfs_free_space_ctl *ctl, return NULL; while (1) { + n = rb_next(&entry->offset_index); + if (!n) + return NULL; + entry = rb_entry(n, struct btrfs_free_space, offset_index); if (entry->bitmap) { if (entry->offset + BITS_PER_BITMAP * ctl->unit > offset) @@ -1738,11 +1742,6 @@ tree_search_offset(struct btrfs_free_space_ctl *ctl, if (entry->offset + entry->bytes > offset) break; } - - n = rb_next(&entry->offset_index); - if (!n) - return NULL; - entry = rb_entry(n, struct btrfs_free_space, offset_index); } return entry; } |