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(parent: ff14aa7) | patch
btrfs: simplify eb checksum verification in btrfs_validate_metadata_buffer
authorDavid Sterba <dsterba@suse.com>
Mon, 21 Sep 2020 20:07:14 +0000 (22:07 +0200)
committerDavid Sterba <dsterba@suse.com>
Mon, 21 Jun 2021 13:19:06 +0000 (15:19 +0200)
commitdfd29eed4ab5881a1af9f07c3573c0be5593dc1f
tree80d7b01eac20d8439dd9b96c37777c5f4871d8b2tree | snapshot
parentff14aa798756a6b98b6020e51e52168128ffa9d7commit | diff
btrfs: simplify eb checksum verification in btrfs_validate_metadata_buffer

The verification copies the calculated checksum bytes to a temporary
buffer but this is not necessary. We can map the eb header on the first
page and use the checksum bytes directly.

This saves at least one function call and boundary checks so it could
lead to a minor performance improvement.

Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
fs/btrfs/disk-io.c diff | blob | blame | history
Linux 6.x block layer and io_uring tree(s)