A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-29 19:21:31 -04:00
Code Issues Projects Releases Packages Wiki Activity

for-linus-20180302

Browse source 
-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABCAAGBQJamXImAAoJEPfTWPspceCmEP4P/3kkm0JIXtbNZFMb1JZtsjwE
 t4OUVEDj4jjRfmZfUVkajPnczM4MSPiXm43PbcOi4NF53mv8k76jyIPhlZREzYzq
 MBknibvpqyiWpbii9tBRrR6FGDR/N51//ya9vdPaYBcBssTg6Aqtt4BE5oPfo011
 PleGROe1jtrBUNBy2dMy4sHb/MvZ0vRuNPxMsD8Agy5UiVeItAelY/lDn1Hw41BY
 O+muE5bw6+yKqB9vGXhV3O4WRh8BofJi1YdzbwbbIzH40ZZK5VTDQc5o19/CFEZ/
 uZ8BStOFEWA0LNuarME5fknWcogiedEtszweyiWBbVZo4VqCsfxPoaRCibY/Wg5F
 a0UNJ4iSzglhfSMoHJlhvlCAMCyubFSeMSdJjrrpIcyBrziJXpcEXcUnWI43yi4P
 FoM8zUni22XnfLWxIdTjVkMRytjtqTLcXOHXdP5N/ESa80jBq3Q76TLmzIKW+kK5
 sAre+hgr52NdgovP/NSxsdvsckAolWNe40JI8wLbwNo+lMHr0ckzOG+sAdz1iPRK
 iVL0CAlby4A94Wcu+OHCwfY7B9lBrMuMfHsesEM6x1cxgAhd3YNfEJ8g2QolCUEV
 KmZizXbV9nnmJfegVC06SgM+D7AR26dwsBG2aoibShuvdxX6jMdUHygyu5DCJdg/
 JS+q71jmxb/r1TWe/62r
 =AMhV
 -----END PGP SIGNATURE-----

Merge tag 'for-linus-20180302' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:
 "A collection of fixes for this series. This is a little larger than
  usual at this time, but that's mainly because I was out on vacation
  last week. Nothing in here is major in any way, it's just two weeks of
  fixes. This contains:

   - NVMe pull from Keith, with a set of fixes from the usual suspects.

   - mq-deadline zone unlock fix from Damien, fixing an issue with the
     SMR zone locking added for 4.16.

   - two bcache fixes sent in by Michael, with changes from Coly and
     Tang.

   - comment typo fix from Eric for blktrace.

   - return-value error handling fix for nbd, from Gustavo.

   - fix a direct-io case where we don't defer to a completion handler,
     making us sleep from IRQ device completion. From Jan.

   - a small series from Jan fixing up holes around handling of bdev
     references.

   - small set of regression fixes from Jiufei, mostly fixing problems
     around the gendisk pointer -> partition index change.

   - regression fix from Ming, fixing a boundary issue with the discard
     page cache invalidation.

   - two-patch series from Ming, fixing both a core blk-mq-sched and
     kyber issue around token freeing on a requeue condition"

* tag 'for-linus-20180302' of git://git.kernel.dk/linux-block: (24 commits)
  block: fix a typo
  block: display the correct diskname for bio
  block: fix the count of PGPGOUT for WRITE_SAME
  mq-deadline: Make sure to always unlock zones
  nvmet: fix PSDT field check in command format
  nvme-multipath: fix sysfs dangerously created links
  nbd: fix return value in error handling path
  bcache: fix kcrashes with fio in RAID5 backend dev
  bcache: correct flash only vols (check all uuids)
  blktrace_api.h: fix comment for struct blk_user_trace_setup
  blockdev: Avoid two active bdev inodes for one device
  genhd: Fix BUG in blkdev_open()
  genhd: Fix use after free in __blkdev_get()
  genhd: Add helper put_disk_and_module()
  genhd: Rename get_disk() to get_disk_and_module()
  genhd: Fix leaked module reference for NVME devices
  direct-io: Fix sleep in atomic due to sync AIO
  nvme-pci: Fix nvme queue cleanup if IRQ setup fails
  block: kyber: fix domain token leak during requeue
  blk-mq: don't call io sched's .requeue_request when requeueing rq to ->dispatch
  ...
This commit is contained in:
Linus Torvalds 2018-03-02 09:35:36 -08:00
commit fb6d47a592
32 changed files with 145 additions and 82 deletions
Download patch file Download diff file Expand all files Collapse all files

49
fs/block_dev.c
View file

@ -1058,6 +1058,27 @@ retry:
return 0;
}
static struct gendisk *bdev_get_gendisk(struct block_device *bdev, int *partno)
{
struct gendisk *disk = get_gendisk(bdev->bd_dev, partno);
if (!disk)
return NULL;
/*
* Now that we hold gendisk reference we make sure bdev we looked up is
* not stale. If it is, it means device got removed and created before
* we looked up gendisk and we fail open in such case. Associating
* unhashed bdev with newly created gendisk could lead to two bdevs
* (and thus two independent caches) being associated with one device
* which is bad.
*/
if (inode_unhashed(bdev->bd_inode)) {
put_disk_and_module(disk);
return NULL;
}
return disk;
}
/**
* bd_start_claiming - start claiming a block device
* @bdev: block device of interest
@ -1094,7 +1115,7 @@ static struct block_device *bd_start_claiming(struct block_device *bdev,
* @bdev might not have been initialized properly yet, look up
* and grab the outer block device the hard way.
*/
disk = get_gendisk(bdev->bd_dev, &partno);
disk = bdev_get_gendisk(bdev, &partno);
if (!disk)
return ERR_PTR(-ENXIO);
@ -1111,8 +1132,7 @@ static struct block_device *bd_start_claiming(struct block_device *bdev,
else
whole = bdgrab(bdev);
module_put(disk->fops->owner);
put_disk(disk);
put_disk_and_module(disk);
if (!whole)
return ERR_PTR(-ENOMEM);
@ -1407,10 +1427,10 @@ static void __blkdev_put(struct block_device *bdev, fmode_t mode, int for_part);
static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
{
struct gendisk *disk;
struct module *owner;
int ret;
int partno;
int perm = 0;
bool first_open = false;
if (mode & FMODE_READ)
perm |= MAY_READ;
@ -1430,14 +1450,14 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
restart:
ret = -ENXIO;
disk = get_gendisk(bdev->bd_dev, &partno);
disk = bdev_get_gendisk(bdev, &partno);
if (!disk)
goto out;
owner = disk->fops->owner;
disk_block_events(disk);
mutex_lock_nested(&bdev->bd_mutex, for_part);
if (!bdev->bd_openers) {
first_open = true;
bdev->bd_disk = disk;
bdev->bd_queue = disk->queue;
bdev->bd_contains = bdev;
@ -1463,8 +1483,7 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
bdev->bd_queue = NULL;
mutex_unlock(&bdev->bd_mutex);
disk_unblock_events(disk);
put_disk(disk);
module_put(owner);
put_disk_and_module(disk);
goto restart;
}
}
@ -1524,15 +1543,15 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
if (ret)
goto out_unlock_bdev;
}
/* only one opener holds refs to the module and disk */
put_disk(disk);
module_put(owner);
}
bdev->bd_openers++;
if (for_part)
bdev->bd_part_count++;
mutex_unlock(&bdev->bd_mutex);
disk_unblock_events(disk);
/* only one opener holds refs to the module and disk */
if (!first_open)
put_disk_and_module(disk);
return 0;
out_clear:
@ -1546,8 +1565,7 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
out_unlock_bdev:
mutex_unlock(&bdev->bd_mutex);
disk_unblock_events(disk);
put_disk(disk);
module_put(owner);
put_disk_and_module(disk);
out:
bdput(bdev);
@ -1770,8 +1788,6 @@ static void __blkdev_put(struct block_device *bdev, fmode_t mode, int for_part)
disk->fops->release(disk, mode);
}
if (!bdev->bd_openers) {
struct module *owner = disk->fops->owner;
disk_put_part(bdev->bd_part);
bdev->bd_part = NULL;
bdev->bd_disk = NULL;
@ -1779,8 +1795,7 @@ static void __blkdev_put(struct block_device *bdev, fmode_t mode, int for_part)
victim = bdev->bd_contains;
bdev->bd_contains = NULL;
put_disk(disk);
module_put(owner);
put_disk_and_module(disk);
}
mutex_unlock(&bdev->bd_mutex);
bdput(bdev);

3
fs/direct-io.c
View file

@ -1274,8 +1274,7 @@ do_blockdev_direct_IO(struct kiocb *iocb, struct inode *inode,
*/
if (dio->is_async && iov_iter_rw(iter) == WRITE) {
retval = 0;
if ((iocb->ki_filp->f_flags & O_DSYNC) ||
IS_SYNC(iocb->ki_filp->f_mapping->host))
if (iocb->ki_flags & IOCB_DSYNC)
retval = dio_set_defer_completion(dio);
else if (!dio->inode->i_sb->s_dio_done_wq) {
/*