summaryrefslogtreecommitdiff
path: root/drivers/md/bcache/bcache.h
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2020-08-05 20:51:40 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2020-08-05 20:51:40 +0300
commite0fc99e21e6e299673f1640105ac0c1d829c2d93 (patch)
tree4637b171164c3e653e9002b2bc962b32f05b5a07 /drivers/md/bcache/bcache.h
parent4834ce9d8e074bb7ae197632e0708219b9f389b5 (diff)
parentf59589fc89665102923725e80e12f782d5f74f67 (diff)
downloadlinux-e0fc99e21e6e299673f1640105ac0c1d829c2d93.tar.xz
Merge tag 'for-5.9/drivers-20200803' of git://git.kernel.dk/linux-block
Pull block driver updates from Jens Axboe: - NVMe: - ZNS support (Aravind, Keith, Matias, Niklas) - Misc cleanups, optimizations, fixes (Baolin, Chaitanya, David, Dongli, Max, Sagi) - null_blk zone capacity support (Aravind) - MD: - raid5/6 fixes (ChangSyun) - Warning fixes (Damien) - raid5 stripe fixes (Guoqing, Song, Yufen) - sysfs deadlock fix (Junxiao) - raid10 deadlock fix (Vitaly) - struct_size conversions (Gustavo) - Set of bcache updates/fixes (Coly) * tag 'for-5.9/drivers-20200803' of git://git.kernel.dk/linux-block: (117 commits) md/raid5: Allow degraded raid6 to do rmw md/raid5: Fix Force reconstruct-write io stuck in degraded raid5 raid5: don't duplicate code for different paths in handle_stripe raid5-cache: hold spinlock instead of mutex in r5c_journal_mode_show md: print errno in super_written md/raid5: remove the redundant setting of STRIPE_HANDLE md: register new md sysfs file 'uuid' read-only md: fix max sectors calculation for super 1.0 nvme-loop: remove extra variable in create ctrl nvme-loop: set ctrl state connecting after init nvme-multipath: do not fall back to __nvme_find_path() for non-optimized paths nvme-multipath: fix logic for non-optimized paths nvme-rdma: fix controller reset hang during traffic nvme-tcp: fix controller reset hang during traffic nvmet: introduce the passthru Kconfig option nvmet: introduce the passthru configfs interface nvmet: Add passthru enable/disable helpers nvmet: add passthru code to process commands nvme: export nvme_find_get_ns() and nvme_put_ns() nvme: introduce nvme_ctrl_get_by_path() ...
Diffstat (limited to 'drivers/md/bcache/bcache.h')
-rw-r--r--drivers/md/bcache/bcache.h31
1 files changed, 26 insertions, 5 deletions
diff --git a/drivers/md/bcache/bcache.h b/drivers/md/bcache/bcache.h
index 3c708e8b5e2d..4fd03d2496d8 100644
--- a/drivers/md/bcache/bcache.h
+++ b/drivers/md/bcache/bcache.h
@@ -264,7 +264,7 @@ struct bcache_device {
#define BCACHE_DEV_UNLINK_DONE 2
#define BCACHE_DEV_WB_RUNNING 3
#define BCACHE_DEV_RATE_DW_RUNNING 4
- unsigned int nr_stripes;
+ int nr_stripes;
unsigned int stripe_size;
atomic_t *stripe_sectors_dirty;
unsigned long *full_dirty_stripes;
@@ -762,11 +762,32 @@ struct bbio {
#define bucket_bytes(c) ((c)->sb.bucket_size << 9)
#define block_bytes(c) ((c)->sb.block_size << 9)
-#define prios_per_bucket(c) \
- ((bucket_bytes(c) - sizeof(struct prio_set)) / \
+static inline unsigned int meta_bucket_pages(struct cache_sb *sb)
+{
+ unsigned int n, max_pages;
+
+ max_pages = min_t(unsigned int,
+ __rounddown_pow_of_two(USHRT_MAX) / PAGE_SECTORS,
+ MAX_ORDER_NR_PAGES);
+
+ n = sb->bucket_size / PAGE_SECTORS;
+ if (n > max_pages)
+ n = max_pages;
+
+ return n;
+}
+
+static inline unsigned int meta_bucket_bytes(struct cache_sb *sb)
+{
+ return meta_bucket_pages(sb) << PAGE_SHIFT;
+}
+
+#define prios_per_bucket(ca) \
+ ((meta_bucket_bytes(&(ca)->sb) - sizeof(struct prio_set)) / \
sizeof(struct bucket_disk))
-#define prio_buckets(c) \
- DIV_ROUND_UP((size_t) (c)->sb.nbuckets, prios_per_bucket(c))
+
+#define prio_buckets(ca) \
+ DIV_ROUND_UP((size_t) (ca)->sb.nbuckets, prios_per_bucket(ca))
static inline size_t sector_to_bucket(struct cache_set *c, sector_t s)
{