Sagi Grimberg e164471dcf nvme: don't protect ns mutation with ns->head->lock ... Right now ns->head->lock is protecting namespace mutation which is wrong and unneeded. Move it to only protect against head mutations. While we're at it, remove unnecessary ns->head reference as we already have head pointer. The problem with this is that the head->lock spans mpath disk node I/O that may block under some conditions (if for example the controller is disconnecting or the path became inaccessible), The locking scheme does not allow any other path to enable itself, preventing blocked I/O to complete and forward-progress from there. This is a preparation patch for the fix in a subsequent patch where the disk I/O will also be done outside the head->lock. Fixes: 0d0b660f21 ("nvme: add ANA support") Signed-off-by: Anton Eidelman <anton@lightbitslabs.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Christoph Hellwig <hch@lst.de>		2020-06-24 18:41:20 +02:00
..
core.c	nvme: fix possible deadlock when I/O is blocked	2020-06-24 18:41:20 +02:00
fabrics.c	nvme-fabrics: Use scnprintf() for avoiding potential buffer overflow	2020-03-26 04:51:55 +09:00
fabrics.h
fault_inject.c
fc.c	nvme-fc: don't call nvme_cleanup_cmd() for AENs	2020-06-11 09:10:05 -06:00
fc.h	nvme-fc: Update header and host for common definitions for LS handling	2020-05-09 16:18:33 -06:00
hwmon.c
Kconfig	treewide: replace '---help---' in Kconfig files with 'help'	2020-06-14 01:57:21 +09:00
lightnvm.c	nvme: introduce namespace features flag	2020-05-27 07:12:38 +02:00
Makefile
multipath.c	nvme: don't protect ns mutation with ns->head->lock	2020-06-24 18:41:20 +02:00
nvme.h	block: remove the error argument to the block_bio_complete tracepoint	2020-06-04 21:16:11 -06:00
pci.c	nvme-pci: initialize tagset numa value to the value of the ctrl	2020-06-24 18:37:08 +02:00
rdma.c	nvme-rdma: assign completion vector correctly	2020-06-24 18:41:19 +02:00
tcp.c	nvme-tcp: initialize tagset numa value to the value of the ctrl	2020-06-24 18:37:08 +02:00
trace.c
trace.h