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authorLinus Torvalds <torvalds@linux-foundation.org>2019-01-12 22:40:51 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2019-01-12 22:40:51 +0100
commitb8c3b8992ff2827482ac1543f84f5024a72c4f2e (patch)
treee296f51688cfa6752f16b1422acb07633d2f1289 /Documentation/ABI
parentMerge tag 'remove-dma_zalloc_coherent-5.0' of git://git.infradead.org/users/h... (diff)
parentata: ahci: mvebu: request PHY suspend/resume for Armada 3700 (diff)
downloadlinux-b8c3b8992ff2827482ac1543f84f5024a72c4f2e.tar.xz
linux-b8c3b8992ff2827482ac1543f84f5024a72c4f2e.zip
Merge tag 'for-linus-20190112' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe: - NVMe pull request from Christoph, with little fixes all over the map - Loop caching fix for offset/bs change (Jaegeuk Kim) - Block documentation tweaks (Jeff, Jon, Weiping, John) - null_blk zoned tweak (John) - ahch mvebu suspend/resume support. Should have gone into the merge window, but there was some confusion on which tree had it. (Miquel) * tag 'for-linus-20190112' of git://git.kernel.dk/linux-block: (22 commits) ata: ahci: mvebu: request PHY suspend/resume for Armada 3700 ata: ahci: mvebu: add Armada 3700 initialization needed for S2RAM ata: ahci: mvebu: do Armada 38x configuration only on relevant SoCs ata: ahci: mvebu: remove stale comment ata: libahci_platform: comply to PHY framework loop: drop caches if offset or block_size are changed block: fix kerneldoc comment for blk_attempt_plug_merge() nvme: don't initlialize ctrl->cntlid twice nvme: introduce NVME_QUIRK_IGNORE_DEV_SUBNQN nvme: pad fake subsys NQN vid and ssvid with zeros nvme-multipath: zero out ANA log buffer nvme-fabrics: unset write/poll queues for discovery controllers nvme-tcp: don't ask if controller is fabrics nvme-tcp: remove dead code nvme-pci: fix out of bounds access in nvme_cqe_pending nvme-pci: rerun irq setup on IO queue init errors nvme-pci: use the same attributes when freeing host_mem_desc_bufs. nvme-pci: fix the wrong setting of nr_maps block: doc: add slice_idle_us to bfq documentation block: clarify documentation for blk_{start|finish}_plug ...
Diffstat (limited to 'Documentation/ABI')
-rw-r--r--Documentation/ABI/testing/sysfs-block9
1 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-block b/Documentation/ABI/testing/sysfs-block
index 7710d4022b19..dfad7427817c 100644
--- a/Documentation/ABI/testing/sysfs-block
+++ b/Documentation/ABI/testing/sysfs-block
@@ -279,3 +279,12 @@ Description:
size in 512B sectors of the zones of the device, with
the eventual exception of the last zone of the device
which may be smaller.
+
+What: /sys/block/<disk>/queue/io_timeout
+Date: November 2018
+Contact: Weiping Zhang <zhangweiping@didiglobal.com>
+Description:
+ io_timeout is the request timeout in milliseconds. If a request
+ does not complete in this time then the block driver timeout
+ handler is invoked. That timeout handler can decide to retry
+ the request, to fail it or to start a device recovery strategy.