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linux/drivers/block
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Boris Ostrovsky f151ba989d xen/blkfront: When purging persistent grants, keep them in the buffer 
Commit a46b53672b ("xen/blkfront: cleanup stale persistent grants")
added support for purging persistent grants when they are not in use. As
part of the purge, the grants were removed from the grant buffer, This
eventually causes the buffer to become empty, with BUG_ON triggered in
get_free_grant(). This can be observed even on an idle system, within
20-30 minutes.

We should keep the grants in the buffer when purging, and only free the
grant ref.

Fixes: a46b53672b ("xen/blkfront: cleanup stale persistent grants")
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-09-27 08:26:38 -06:00
..
aoe drivers/block/aoe/aoedev: NULL check is not needed for mempool_destroy 2018-08-08 09:17:20 -06:00
drbd drivers/block/drbd: remove the null check for kmem_cache_destroy 2018-08-08 10:04:42 -06:00
mtip32xx drivers/block/mtip32xx: remove the null check for debugfs_remove_recursive 2018-08-08 09:17:18 -06:00
paride block: paride: pd: mark expected switch fall-throughs 2018-08-09 10:17:38 -06:00
rsxx block: Add and use op_stat_group() for indexing disk_stat fields. 2018-07-18 08:44:20 -06:00
xen-blkback xen/blkback: remove unused pers_gnts_lock from struct xen_blkif_ring 2018-08-27 12:12:04 -04:00
zram drivers/block/zram/zram_drv.c: fix bug storing backing_dev 2018-08-22 10:52:45 -07:00
amiflop.c genhd: Rename get_disk() to get_disk_and_module() 2018-02-26 09:48:42 -07:00
ataflop.c genhd: Rename get_disk() to get_disk_and_module() 2018-02-26 09:48:42 -07:00
brd.c block: make bdev_ops->rw_page() take a REQ_OP instead of bool 2018-07-18 08:44:14 -06:00
cryptoloop.c block: cryptoloop - Fix build warning 2017-09-26 07:41:22 -06:00
DAC960.c block/DAC960.c: make some arrays static const, shrinks object size 2018-08-21 11:00:17 -06:00
DAC960.h DAC960: don't use block layer bounce buffers 2018-05-11 15:07:54 -06:00
floppy.c floppy: Do not copy a kernel pointer to user memory in FDGETPRM ioctl 2018-09-20 09:09:48 -06:00
Kconfig cdrom: Use struct scsi_sense_hdr internally 2018-08-02 15:22:39 -06:00
loop.c block/loop: mark expected switch fall-through 2018-07-09 09:07:53 -06:00
loop.h loop: remember whether sysfs_create_group() was done 2018-05-07 15:26:36 -06:00
Makefile block: Rename the null_blk_mod kernel module back into null_blk 2018-07-24 09:54:36 -06:00
nbd.c nbd: don't allow invalid blocksize settings 2018-09-04 11:54:58 -06:00
null_blk.h null_blk: fix zoned support for non-rq based operation 2018-09-12 18:21:11 -06:00
null_blk_main.c null_blk: fix zoned support for non-rq based operation 2018-09-12 18:21:11 -06:00
null_blk_zoned.c null_blk: fix zoned support for non-rq based operation 2018-09-12 18:21:11 -06:00
pktcdvd.c pktcdvd: fix setting of 'ret' error return for a few cases 2018-08-16 14:09:28 -06:00
ps3disk.c ps3disk: handle highmem pages 2018-05-11 15:08:03 -06:00
ps3vram.c treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
rbd.c The main things are support for cephx v2 authentication protocol and 2018-08-20 18:26:55 -07:00
rbd_types.h rbd: RBD_V{1,2}_DATA_FORMAT macros 2017-02-20 12:16:15 +01:00
skd_main.c block: skd: Use %pad printk format for dma_addr_t values 2018-07-12 15:01:28 -06:00
skd_s1120.h skd: Use __packed only when needed 2017-08-18 08:45:29 -06:00
sunvdc.c treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
swim.c block/swim: Select appropriate drive on device open 2018-04-16 21:49:35 -06:00
swim3.c block/swim: Rename macros to avoid inconsistent inverted logic 2018-04-16 21:49:35 -06:00
swim_asm.S
sx8.c block: sanitize blk_get_request calling conventions 2018-05-14 08:55:12 -06:00
umem.c block: Fix a race between the cgroup code and request queue initialization 2018-02-28 12:23:35 -07:00
umem.h
virtio_blk.c block drivers/block: Use octal not symbolic permissions 2018-05-24 13:38:59 -06:00
xen-blkfront.c xen/blkfront: When purging persistent grants, keep them in the buffer 2018-09-27 08:26:38 -06:00
xsysace.c treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
z2ram.c treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00