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for-linus-20180309

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Merge tag 'for-linus-20180309' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:

 - a xen-blkfront fix from Bhavesh with a multiqueue fix when
   detaching/re-attaching

 - a few important NVMe fixes, including a revert for a sysfs fix that
   caused some user space confusion

 - two bcache fixes by way of Michael Lyle

 - a loop regression fix, fixing an issue with lost writes on DAX.

* tag 'for-linus-20180309' of git://git.kernel.dk/linux-block:
  loop: Fix lost writes caused by missing flag
  nvme_fc: rework sqsize handling
  nvme-fabrics: Ignore nr_io_queues option for discovery controllers
  xen-blkfront: move negotiate_mq to cover all cases of new VBDs
  Revert "nvme: create 'slaves' and 'holders' entries for hidden controllers"
  bcache: don't attach backing with duplicate UUID
  bcache: fix crashes in duplicate cache device register
  nvme: pci: pass max vectors as num_possible_cpus() to pci_alloc_irq_vectors
  nvme-pci: Fix EEH failure on ppc
This commit is contained in:
Linus Torvalds 2018-03-10 08:48:01 -08:00
commit 91a262096e
9 changed files with 60 additions and 73 deletions
Download patch file Download diff file Expand all files Collapse all files

27
drivers/md/bcache/super.c
View file

@ -963,6 +963,7 @@ int bch_cached_dev_attach(struct cached_dev *dc, struct cache_set *c,
uint32_t rtime = cpu_to_le32(get_seconds());
struct uuid_entry *u;
char buf[BDEVNAME_SIZE];
struct cached_dev *exist_dc, *t;
bdevname(dc->bdev, buf);
@ -987,6 +988,16 @@ int bch_cached_dev_attach(struct cached_dev *dc, struct cache_set *c,
return -EINVAL;
}
/* Check whether already attached */
list_for_each_entry_safe(exist_dc, t, &c->cached_devs, list) {
if (!memcmp(dc->sb.uuid, exist_dc->sb.uuid, 16)) {
pr_err("Tried to attach %s but duplicate UUID already attached",
buf);
return -EINVAL;
}
}
u = uuid_find(c, dc->sb.uuid);
if (u &&
@ -1204,7 +1215,7 @@ static void register_bdev(struct cache_sb *sb, struct page *sb_page,
return;
err:
pr_notice("error opening %s: %s", bdevname(bdev, name), err);
pr_notice("error %s: %s", bdevname(bdev, name), err);
bcache_device_stop(&dc->disk);
}
@ -1883,6 +1894,8 @@ static int register_cache(struct cache_sb *sb, struct page *sb_page,
const char *err = NULL; /* must be set for any error case */
int ret = 0;
bdevname(bdev, name);
memcpy(&ca->sb, sb, sizeof(struct cache_sb));
ca->bdev = bdev;
ca->bdev->bd_holder = ca;
@ -1891,11 +1904,12 @@ static int register_cache(struct cache_sb *sb, struct page *sb_page,
bio_first_bvec_all(&ca->sb_bio)->bv_page = sb_page;
get_page(sb_page);
if (blk_queue_discard(bdev_get_queue(ca->bdev)))
if (blk_queue_discard(bdev_get_queue(bdev)))
ca->discard = CACHE_DISCARD(&ca->sb);
ret = cache_alloc(ca);
if (ret != 0) {
blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL);
if (ret == -ENOMEM)
err = "cache_alloc(): -ENOMEM";
else
@ -1918,14 +1932,14 @@ static int register_cache(struct cache_sb *sb, struct page *sb_page,
goto out;
}
pr_info("registered cache device %s", bdevname(bdev, name));
pr_info("registered cache device %s", name);
out:
kobject_put(&ca->kobj);
err:
if (err)
pr_notice("error opening %s: %s", bdevname(bdev, name), err);
pr_notice("error %s: %s", name, err);
return ret;
}
@ -2014,6 +2028,7 @@ static ssize_t register_bcache(struct kobject *k, struct kobj_attribute *attr,
if (err)
goto err_close;
err = "failed to register device";
if (SB_IS_BDEV(sb)) {
struct cached_dev *dc = kzalloc(sizeof(*dc), GFP_KERNEL);
if (!dc)
@ -2028,7 +2043,7 @@ static ssize_t register_bcache(struct kobject *k, struct kobj_attribute *attr,
goto err_close;
if (register_cache(sb, sb_page, bdev, ca) != 0)
goto err_close;
goto err;
}
out:
if (sb_page)
@ -2041,7 +2056,7 @@ out:
err_close:
blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL);
err:
pr_info("error opening %s: %s", path, err);
pr_info("error %s: %s", path, err);
ret = -EINVAL;
goto out;
}