Ilya Dryomov ec062367fa rbd: prevent busy loop when requesting exclusive lock ... commit 9d01e07fd1 upstream. Due to rbd_try_acquire_lock() effectively swallowing all but EBLOCKLISTED error from rbd_try_lock() ("request lock anyway") and rbd_request_lock() returning ETIMEDOUT error not only for an actual notify timeout but also when the lock owner doesn't respond, a busy loop inside of rbd_acquire_lock() between rbd_try_acquire_lock() and rbd_request_lock() is possible. Requesting the lock on EBUSY error (returned by get_lock_owner_info() if an incompatible lock or invalid lock owner is detected) makes very little sense. The same goes for ETIMEDOUT error (might pop up pretty much anywhere if osd_request_timeout option is set) and many others. Just fail I/O requests on rbd_dev->acquiring_list immediately on any error from rbd_try_lock(). Cc: stable@vger.kernel.org # 588159009d5b: rbd: retrieve and check lock owner twice before blocklisting Cc: stable@vger.kernel.org Signed-off-by: Ilya Dryomov <idryomov@gmail.com> Reviewed-by: Dongsheng Yang <dongsheng.yang@easystack.cn> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-08-11 12:08:21 +02:00
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aoe	…
drbd	drbd: correctly submit flush bio on barrier	2023-05-11 23:03:39 +09:00
mtip32xx	…
null_blk	null_blk: Fix: memory release when memory_backed=1	2023-06-28 11:12:39 +02:00
paride	…
rnbd	block/rnbd: replace REQ_OP_FLUSH with REQ_OP_WRITE	2023-06-09 10:34:09 +02:00
xen-blkback	…
zram	…
Kconfig	…
Makefile	…
amiflop.c	…
ataflop.c	…
brd.c	brd: use radix_tree_maybe_preload instead of radix_tree_preload	2023-03-10 09:34:34 +01:00
floppy.c	…
loop.c	loop: LOOP_CONFIGURE: send uevents for partitions	2023-04-06 12:10:47 +02:00
n64cart.c	…
nbd.c	nbd: Fix debugfs_create_dir error checking	2023-06-09 10:34:09 +02:00
pktcdvd.c	pktcdvd: check for NULL returna fter calling bio_split_to_limits()	2023-01-24 07:24:37 +01:00
ps3disk.c	…
ps3vram.c	block: handle bio_split_to_limits() NULL return	2023-01-18 11:58:33 +01:00
rbd.c	rbd: prevent busy loop when requesting exclusive lock	2023-08-11 12:08:21 +02:00
rbd_types.h	…
sunvdc.c	block: sunvdc: add check for mdesc_grab() returning NULL	2023-03-22 13:33:47 +01:00
swim.c	…
swim3.c	…
swim_asm.S	…
ublk_drv.c	ublk: fail to recover device if queue setup is interrupted	2023-08-03 10:24:07 +02:00
virtio_blk.c	virtio_blk: Fix signedness bug in virtblk_prep_rq()	2023-01-12 12:02:54 +01:00
xen-blkfront.c	xen/blkfront: Only check REQ_FUA for writes	2023-06-21 16:00:53 +02:00
z2ram.c	…