Benjamin Coddington bff8460376 nfs/blocklayout: Limit repeat device registration on failure ... [ Upstream commit 614733f944 ] Every pNFS SCSI IO wants to do LAYOUTGET, then within the layout find the device which can drive GETDEVINFO, then finally may need to prep the device with a reservation. This slow work makes a mess of IO latencies if one of the later steps is going to fail for awhile. If we're unable to register a SCSI device, ensure we mark the device as unavailable so that it will timeout and be re-added via GETDEVINFO. This avoids repeated doomed attempts to register a device in the IO path. Add some clarifying comments as well. Fixes: d869da91cc ("nfs/blocklayout: Fix premature PR key unregistration") Signed-off-by: Benjamin Coddington <bcodding@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-12-05 14:03:09 +01:00
..
blocklayout.c	nfs/blocklayout: Limit repeat device registration on failure	2024-12-05 14:03:09 +01:00
blocklayout.h	nfs/blocklayout: Fix premature PR key unregistration	2024-07-08 13:47:27 -04:00
dev.c	nfs/blocklayout: Don't attempt unregister for invalid block device	2024-12-05 14:03:09 +01:00
extent_tree.c	mm: remove the pgprot argument to __vmalloc	2020-06-02 10:59:11 -07:00
Makefile
rpc_pipefs.c	rpc_pipefs: Replace one label in bl_resolve_deviceid()	2024-01-04 10:47:56 -05:00