summaryrefslogtreecommitdiff
path: root/drivers/md/bcache/util.h
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2018-08-22 12:34:08 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-08-22 12:34:08 -0700
commitcd9b44f90763c3367e8dd0601849ffb028e8ba52 (patch)
treed1da0c2d49e3622fe51584a154ab383b3e783c1b /drivers/md/bcache/util.h
parentdf2def49c57b4146520a1f4ca37bc3f494e2cd67 (diff)
parent2a9d6481004215da8e93edb588cf448f2af80303 (diff)
downloadlwn-cd9b44f90763c3367e8dd0601849ffb028e8ba52.tar.gz
lwn-cd9b44f90763c3367e8dd0601849ffb028e8ba52.zip
Merge branch 'akpm' (patches from Andrew)
Merge more updates from Andrew Morton: - the rest of MM - procfs updates - various misc things - more y2038 fixes - get_maintainer updates - lib/ updates - checkpatch updates - various epoll updates - autofs updates - hfsplus - some reiserfs work - fatfs updates - signal.c cleanups - ipc/ updates * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (166 commits) ipc/util.c: update return value of ipc_getref from int to bool ipc/util.c: further variable name cleanups ipc: simplify ipc initialization ipc: get rid of ids->tables_initialized hack lib/rhashtable: guarantee initial hashtable allocation lib/rhashtable: simplify bucket_table_alloc() ipc: drop ipc_lock() ipc/util.c: correct comment in ipc_obtain_object_check ipc: rename ipcctl_pre_down_nolock() ipc/util.c: use ipc_rcu_putref() for failues in ipc_addid() ipc: reorganize initialization of kern_ipc_perm.seq ipc: compute kern_ipc_perm.id under the ipc lock init/Kconfig: remove EXPERT from CHECKPOINT_RESTORE fs/sysv/inode.c: use ktime_get_real_seconds() for superblock stamp adfs: use timespec64 for time conversion kernel/sysctl.c: fix typos in comments drivers/rapidio/devices/rio_mport_cdev.c: remove redundant pointer md fork: don't copy inconsistent signal handler state to child signal: make get_signal() return bool signal: make sigkill_pending() return bool ...
Diffstat (limited to 'drivers/md/bcache/util.h')
-rw-r--r--drivers/md/bcache/util.h21
1 files changed, 17 insertions, 4 deletions
diff --git a/drivers/md/bcache/util.h b/drivers/md/bcache/util.h
index f7b0133c9d2f..5ff055f0a653 100644
--- a/drivers/md/bcache/util.h
+++ b/drivers/md/bcache/util.h
@@ -11,6 +11,7 @@
#include <linux/ratelimit.h>
#include <linux/vmalloc.h>
#include <linux/workqueue.h>
+#include <linux/crc64.h>
#include "closure.h"
@@ -542,6 +543,22 @@ dup: \
#define RB_PREV(ptr, member) \
container_of_or_null(rb_prev(&(ptr)->member), typeof(*ptr), member)
+static inline uint64_t bch_crc64(const void *p, size_t len)
+{
+ uint64_t crc = 0xffffffffffffffffULL;
+
+ crc = crc64_be(crc, p, len);
+ return crc ^ 0xffffffffffffffffULL;
+}
+
+static inline uint64_t bch_crc64_update(uint64_t crc,
+ const void *p,
+ size_t len)
+{
+ crc = crc64_be(crc, p, len);
+ return crc;
+}
+
/* Does linear interpolation between powers of two */
static inline unsigned fract_exp_two(unsigned x, unsigned fract_bits)
{
@@ -561,8 +578,4 @@ static inline sector_t bdev_sectors(struct block_device *bdev)
{
return bdev->bd_inode->i_size >> 9;
}
-
-uint64_t bch_crc64_update(uint64_t, const void *, size_t);
-uint64_t bch_crc64(const void *, size_t);
-
#endif /* _BCACHE_UTIL_H */