Benjamin Coddington 614733f944 nfs/blocklayout: Limit repeat device registration on failure ... 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>		2024-11-28 12:55:32 -05:00
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Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
blocklayout.c	nfs/blocklayout: Limit repeat device registration on failure	2024-11-28 12:55:32 -05:00
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	2024-11-28 12:55:32 -05:00
extent_tree.c	mm: remove the pgprot argument to __vmalloc	2020-06-02 10:59:11 -07:00
rpc_pipefs.c	rpc_pipefs: Replace one label in bl_resolve_deviceid()	2024-01-04 10:47:56 -05:00