Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
btrfs: stop parsing crc32c driver name
To determine whether the crc32c implementation is "fast", use
crc32_optimizations() instead of parsing the crypto_shash driver name.
This keeps the code working as intended after the driver name is changed
by the next commit.
Acked-by: David Sterba <dsterba@suse.com>
Link: https://lore.kernel.org/r/20250613183753.31864-2-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
+2
-6
+2
-6
fs/btrfs/disk-io.c
+2
-6
fs/btrfs/disk-io.c
···
2028
2028
2029
2029
fs_info->csum_shash = csum_shash;
2030
2030
2031
-
/*
2032
-
* Check if the checksum implementation is a fast accelerated one.
2033
-
* As-is this is a bit of a hack and should be replaced once the csum
2034
-
* implementations provide that information themselves.
2035
-
*/
2031
+
/* Check if the checksum implementation is a fast accelerated one. */
2036
2032
switch (csum_type) {
2037
2033
case BTRFS_CSUM_TYPE_CRC32:
2038
-
if (!strstr(crypto_shash_driver_name(csum_shash), "generic"))
2034
+
if (crc32_optimizations() & CRC32C_OPTIMIZATION)
2039
2035
set_bit(BTRFS_FS_CSUM_IMPL_FAST, &fs_info->flags);
2040
2036
break;
2041
2037
case BTRFS_CSUM_TYPE_XXHASH: