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author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-04-15 15:44:10 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-04-15 15:44:10 -0700 |
commit | 2e572599139d27db3aaf540b0d34f0a4f58dfca1 (patch) | |
tree | a96c8d562d50963c923edd777b60a2dc3749462c /block | |
parent | f3c9a1abbe9d4c9565fdb0755e2c7814f32d4f62 (diff) | |
parent | a7297a6a3a3322b054592e8e988981d2f5f29cc4 (diff) | |
download | lwn-2e572599139d27db3aaf540b0d34f0a4f58dfca1.tar.gz lwn-2e572599139d27db3aaf540b0d34f0a4f58dfca1.zip |
Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"A few fixes for the current series. This contains:
- Two fixes for NVMe:
One fixes a reset race that can be triggered by repeated
insert/removal of the module.
The other fixes an issue on some platforms, where we get probe
timeouts since legacy interrupts isn't working. This used not to
be a problem since we had the worker thread poll for completions,
but since that was killed off, it means those poor souls can't
successfully probe their NVMe device. Use a proper IRQ check and
probe (msi-x -> msi ->legacy), like most other drivers to work
around this. Both from Keith.
- A loop corruption issue with offset in iters, from Ming Lei.
- A fix for not having the partition stat per cpu ref count
initialized before sending out the KOBJ_ADD, which could cause user
space to access the counter prior to initialization. Also from
Ming Lei.
- A fix for using the wrong congestion state, from Kaixu Xia"
* 'for-linus' of git://git.kernel.dk/linux-block:
block: loop: fix filesystem corruption in case of aio/dio
NVMe: Always use MSI/MSI-x interrupts
NVMe: Fix reset/remove race
writeback: fix the wrong congested state variable definition
block: partition: initialize percpuref before sending out KOBJ_ADD
Diffstat (limited to 'block')
-rw-r--r-- | block/partition-generic.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/block/partition-generic.c b/block/partition-generic.c index 2c6ae2aed2c4..d7eb77e1e3a8 100644 --- a/block/partition-generic.c +++ b/block/partition-generic.c @@ -361,15 +361,20 @@ struct hd_struct *add_partition(struct gendisk *disk, int partno, goto out_del; } + err = hd_ref_init(p); + if (err) { + if (flags & ADDPART_FLAG_WHOLEDISK) + goto out_remove_file; + goto out_del; + } + /* everything is up and running, commence */ rcu_assign_pointer(ptbl->part[partno], p); /* suppress uevent if the disk suppresses it */ if (!dev_get_uevent_suppress(ddev)) kobject_uevent(&pdev->kobj, KOBJ_ADD); - - if (!hd_ref_init(p)) - return p; + return p; out_free_info: free_part_info(p); @@ -378,6 +383,8 @@ out_free_stats: out_free: kfree(p); return ERR_PTR(err); +out_remove_file: + device_remove_file(pdev, &dev_attr_whole_disk); out_del: kobject_put(p->holder_dir); device_del(pdev); |