diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-03-16 12:36:39 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-03-16 12:36:39 -0700 |
commit | 11efae3506d882a8782bc89493a32e467defd6b9 (patch) | |
tree | 4671e72e14bb5f03e484ade6526ccfd1a40f75b8 /drivers/md/raid5-ppl.c | |
parent | 465c209db83e2cdaeb4a52f4e107a9fc636704db (diff) | |
parent | f6d85f04e29859dd3ea65395c05925da352dae89 (diff) | |
download | linux-11efae3506d882a8782bc89493a32e467defd6b9.tar.gz linux-11efae3506d882a8782bc89493a32e467defd6b9.tar.bz2 linux-11efae3506d882a8782bc89493a32e467defd6b9.zip |
Merge tag 'for-5.1/block-post-20190315' of git://git.kernel.dk/linux-block
Pull more block layer changes from Jens Axboe:
"This is a collection of both stragglers, and fixes that came in after
I finalized the initial pull. This contains:
- An MD pull request from Song, with a few minor fixes
- Set of NVMe patches via Christoph
- Pull request from Konrad, with a few fixes for xen/blkback
- pblk fix IO calculation fix (Javier)
- Segment calculation fix for pass-through (Ming)
- Fallthrough annotation for blkcg (Mathieu)"
* tag 'for-5.1/block-post-20190315' of git://git.kernel.dk/linux-block: (25 commits)
blkcg: annotate implicit fall through
nvme-tcp: support C2HData with SUCCESS flag
nvmet: ignore EOPNOTSUPP for discard
nvme: add proper write zeroes setup for the multipath device
nvme: add proper discard setup for the multipath device
nvme: remove nvme_ns_config_oncs
nvme: disable Write Zeroes for qemu controllers
nvmet-fc: bring Disconnect into compliance with FC-NVME spec
nvmet-fc: fix issues with targetport assoc_list list walking
nvme-fc: reject reconnect if io queue count is reduced to zero
nvme-fc: fix numa_node when dev is null
nvme-fc: use nr_phys_segments to determine existence of sgl
nvme-loop: init nvmet_ctrl fatal_err_work when allocate
nvme: update comment to make the code easier to read
nvme: put ns_head ref if namespace fails allocation
nvme-trace: fix cdw10 buffer overrun
nvme: don't warn on block content change effects
nvme: add get-feature to admin cmds tracer
md: Fix failed allocation of md_register_thread
It's wrong to add len to sector_nr in raid10 reshape twice
...
Diffstat (limited to 'drivers/md/raid5-ppl.c')
-rw-r--r-- | drivers/md/raid5-ppl.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/drivers/md/raid5-ppl.c b/drivers/md/raid5-ppl.c index 0b096ddc9c1e..17e9e7d51097 100644 --- a/drivers/md/raid5-ppl.c +++ b/drivers/md/raid5-ppl.c @@ -20,6 +20,7 @@ #include <linux/raid/md_p.h> #include "md.h" #include "raid5.h" +#include "raid5-log.h" /* * PPL consists of a 4KB header (struct ppl_header) and at least 128KB for @@ -115,6 +116,8 @@ struct ppl_conf { /* stripes to retry if failed to allocate io_unit */ struct list_head no_mem_stripes; spinlock_t no_mem_stripes_lock; + + unsigned short write_hint; }; struct ppl_log { @@ -474,6 +477,7 @@ static void ppl_submit_iounit(struct ppl_io_unit *io) bio_set_dev(bio, log->rdev->bdev); bio->bi_iter.bi_sector = log->next_io_sector; bio_add_page(bio, io->header_page, PAGE_SIZE, 0); + bio->bi_write_hint = ppl_conf->write_hint; pr_debug("%s: log->current_io_sector: %llu\n", __func__, (unsigned long long)log->next_io_sector); @@ -503,6 +507,7 @@ static void ppl_submit_iounit(struct ppl_io_unit *io) bio = bio_alloc_bioset(GFP_NOIO, BIO_MAX_PAGES, &ppl_conf->bs); bio->bi_opf = prev->bi_opf; + bio->bi_write_hint = prev->bi_write_hint; bio_copy_dev(bio, prev); bio->bi_iter.bi_sector = bio_end_sector(prev); bio_add_page(bio, sh->ppl_page, PAGE_SIZE, 0); @@ -1407,6 +1412,7 @@ int ppl_init_log(struct r5conf *conf) atomic64_set(&ppl_conf->seq, 0); INIT_LIST_HEAD(&ppl_conf->no_mem_stripes); spin_lock_init(&ppl_conf->no_mem_stripes_lock); + ppl_conf->write_hint = RWF_WRITE_LIFE_NOT_SET; if (!mddev->external) { ppl_conf->signature = ~crc32c_le(~0, mddev->uuid, sizeof(mddev->uuid)); @@ -1501,3 +1507,60 @@ int ppl_modify_log(struct r5conf *conf, struct md_rdev *rdev, bool add) return ret; } + +static ssize_t +ppl_write_hint_show(struct mddev *mddev, char *buf) +{ + size_t ret = 0; + struct r5conf *conf; + struct ppl_conf *ppl_conf = NULL; + + spin_lock(&mddev->lock); + conf = mddev->private; + if (conf && raid5_has_ppl(conf)) + ppl_conf = conf->log_private; + ret = sprintf(buf, "%d\n", ppl_conf ? ppl_conf->write_hint : 0); + spin_unlock(&mddev->lock); + + return ret; +} + +static ssize_t +ppl_write_hint_store(struct mddev *mddev, const char *page, size_t len) +{ + struct r5conf *conf; + struct ppl_conf *ppl_conf; + int err = 0; + unsigned short new; + + if (len >= PAGE_SIZE) + return -EINVAL; + if (kstrtou16(page, 10, &new)) + return -EINVAL; + + err = mddev_lock(mddev); + if (err) + return err; + + conf = mddev->private; + if (!conf) { + err = -ENODEV; + } else if (raid5_has_ppl(conf)) { + ppl_conf = conf->log_private; + if (!ppl_conf) + err = -EINVAL; + else + ppl_conf->write_hint = new; + } else { + err = -EINVAL; + } + + mddev_unlock(mddev); + + return err ?: len; +} + +struct md_sysfs_entry +ppl_write_hint = __ATTR(ppl_write_hint, S_IRUGO | S_IWUSR, + ppl_write_hint_show, + ppl_write_hint_store); |