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| author |   David Sterba <dsterba@suse.com> | 2025-09-17 19:53:55 +0200 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2025-09-23 08:49:26 +0200 |
| commit | cc53bd2085c8fa7b199a9a8e10e634b62a6d3fa8 (patch) | |
| tree | e109a51a63115104c3769dff9a9beac8acec879b /fs/btrfs/backref.c | |
| parent | btrfs: add unlikely annotations to branches leading to EUCLEAN (diff) | |
| download | wireguard-linux-cc53bd2085c8fa7b199a9a8e10e634b62a6d3fa8.tar.xz wireguard-linux-cc53bd2085c8fa7b199a9a8e10e634b62a6d3fa8.zip | |
btrfs: add unlikely annotations to branches leading to EIO
The unlikely() annotation is a static prediction hint that compiler may
use to reorder code out of hot path. We use it elsewhere (namely
tree-checker.c) for error branches that almost never happen, where
EIO is one of them.
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/backref.c')
| -rw-r--r-- | fs/btrfs/backref.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c index 650083e0f1cb..2ab550a1e715 100644 --- a/fs/btrfs/backref.c +++ b/fs/btrfs/backref.c @@ -859,7 +859,7 @@ static int add_missing_keys(struct btrfs_fs_info *fs_info, free_pref(ref); return PTR_ERR(eb); } - if (!extent_buffer_uptodate(eb)) { + if (unlikely(!extent_buffer_uptodate(eb))) { free_pref(ref); free_extent_buffer(eb); return -EIO; @@ -1614,7 +1614,7 @@ again: ret = PTR_ERR(eb); goto out; } - if (!extent_buffer_uptodate(eb)) { + if (unlikely(!extent_buffer_uptodate(eb))) { free_extent_buffer(eb); ret = -EIO; goto out; |