diff options
| author | Yufen Yu <yuyufen@huawei.com> | 2020-07-18 12:29:07 +0300 |
|---|---|---|
| committer | Song Liu <songliubraving@fb.com> | 2020-07-22 03:18:12 +0300 |
| commit | c911c46c017c745e0f5ece9626d0fbfaff5a1f97 (patch) | |
| tree | a528b865b3287bd4d4998ae2ec14a0eec64466e0 /drivers/md/raid5.h | |
| parent | 1684e97538b9484c72bcaff2961569c3b0021473 (diff) | |
| download | linux-c911c46c017c745e0f5ece9626d0fbfaff5a1f97.tar.xz | |
md/raid456: convert macro STRIPE_* to RAID5_STRIPE_*
Convert macro STRIPE_SIZE, STRIPE_SECTORS and STRIPE_SHIFT to
RAID5_STRIPE_SIZE(), RAID5_STRIPE_SECTORS() and RAID5_STRIPE_SHIFT().
This patch is prepare for the following adjustable stripe_size.
It will not change any existing functionality.
Signed-off-by: Yufen Yu <yuyufen@huawei.com>
Signed-off-by: Song Liu <songliubraving@fb.com>
Diffstat (limited to 'drivers/md/raid5.h')
| -rw-r--r-- | drivers/md/raid5.h | 37 |
1 files changed, 20 insertions, 17 deletions
diff --git a/drivers/md/raid5.h b/drivers/md/raid5.h index f90e0704bed9..ca21f30e31da 100644 --- a/drivers/md/raid5.h +++ b/drivers/md/raid5.h @@ -481,23 +481,6 @@ struct disk_info { #define HASH_MASK (NR_HASH - 1) #define MAX_STRIPE_BATCH 8 -/* bio's attached to a stripe+device for I/O are linked together in bi_sector - * order without overlap. There may be several bio's per stripe+device, and - * a bio could span several devices. - * When walking this list for a particular stripe+device, we must never proceed - * beyond a bio that extends past this device, as the next bio might no longer - * be valid. - * This function is used to determine the 'next' bio in the list, given the - * sector of the current stripe+device - */ -static inline struct bio *r5_next_bio(struct bio *bio, sector_t sector) -{ - if (bio_end_sector(bio) < sector + STRIPE_SECTORS) - return bio->bi_next; - else - return NULL; -} - /* NOTE NR_STRIPE_HASH_LOCKS must remain below 64. * This is because we sometimes take all the spinlocks * and creating that much locking depth can cause @@ -690,6 +673,26 @@ struct r5conf { struct r5pending_data *next_pending_data; }; +#define RAID5_STRIPE_SIZE(conf) STRIPE_SIZE +#define RAID5_STRIPE_SHIFT(conf) STRIPE_SHIFT +#define RAID5_STRIPE_SECTORS(conf) STRIPE_SECTORS + +/* bio's attached to a stripe+device for I/O are linked together in bi_sector + * order without overlap. There may be several bio's per stripe+device, and + * a bio could span several devices. + * When walking this list for a particular stripe+device, we must never proceed + * beyond a bio that extends past this device, as the next bio might no longer + * be valid. + * This function is used to determine the 'next' bio in the list, given the + * sector of the current stripe+device + */ +static inline struct bio *r5_next_bio(struct r5conf *conf, struct bio *bio, sector_t sector) +{ + if (bio_end_sector(bio) < sector + RAID5_STRIPE_SECTORS(conf)) + return bio->bi_next; + else + return NULL; +} /* * Our supported algorithms |