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btrfs: mark extent buffer alignment checks as unlikely

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We are not expecting to ever fail the extent buffer alignment checks, so
mark them as unlikely to allow the compiler to potentially generate more
optimized code.

Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Filipe Manana
2025-09-16 15:50:49 +01:00
committed by David Sterba
parent 6a9e1d1a65
commit 8f0534ec96
1 changed files with 5 additions and 5 deletions
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10
fs/btrfs/extent_io.c
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@@ -3228,25 +3228,25 @@ static bool check_eb_alignment(struct btrfs_fs_info *fs_info, u64 start)
{
const u32 nodesize = fs_info->nodesize;
if (!IS_ALIGNED(start, fs_info->sectorsize)) {
if (unlikely(!IS_ALIGNED(start, fs_info->sectorsize))) {
btrfs_err(fs_info, "bad tree block start %llu", start);
return true;
}
if (nodesize < PAGE_SIZE && !IS_ALIGNED(start, nodesize)) {
if (unlikely(nodesize < PAGE_SIZE && !IS_ALIGNED(start, nodesize))) {
btrfs_err(fs_info,
"tree block is not nodesize aligned, start %llu nodesize %u",
start, nodesize);
return true;
}
if (nodesize >= PAGE_SIZE && !PAGE_ALIGNED(start)) {
if (unlikely(nodesize >= PAGE_SIZE && !PAGE_ALIGNED(start))) {
btrfs_err(fs_info,
"tree block is not page aligned, start %llu nodesize %u",
start, nodesize);
return true;
}
if (!IS_ALIGNED(start, nodesize) &&
!test_and_set_bit(BTRFS_FS_UNALIGNED_TREE_BLOCK, &fs_info->flags)) {
if (unlikely(!IS_ALIGNED(start, nodesize) &&
!test_and_set_bit(BTRFS_FS_UNALIGNED_TREE_BLOCK, &fs_info->flags))) {
btrfs_warn(fs_info,
"tree block not nodesize aligned, start %llu nodesize %u, can be resolved by a full metadata balance",
start, nodesize);