mirror of https://gitee.com/openkylin/linux.git
18 lines
534 B
C
18 lines
534 B
C
#include <asm/byteorder.h>
|
|
#include <linux/crc32c.h>
|
|
#include <linux/version.h>
|
|
|
|
/**
|
|
* implementation of crc32c_le() changed in linux-2.6.23,
|
|
* has of v0.13 btrfs-progs is using the latest version.
|
|
* We must workaround older implementations of crc32c_le()
|
|
* found on older kernel versions.
|
|
*/
|
|
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,23)
|
|
#define btrfs_crc32c(seed, data, length) \
|
|
__cpu_to_le32( crc32c( __le32_to_cpu(seed), data, length) )
|
|
#else
|
|
#define btrfs_crc32c(seed, data, length) \
|
|
crc32c(seed, data, length)
|
|
#endif
|