David Howells 5518842882 fscache: Fix cookie key hashing ... [ Upstream commit 35b72573e9 ] The current hash algorithm used for hashing cookie keys is really bad, producing almost no dispersion (after a test kernel build, ~30000 files were split over just 18 out of the 32768 hash buckets). Borrow the full_name_hash() hash function into fscache to do the hashing for cookie keys and, in the future, volume keys. I don't want to use full_name_hash() as-is because I want the hash value to be consistent across arches and over time as the hash value produced may get used on disk. I can also optimise parts of it away as the key will always be a padded array of aligned 32-bit words. Fixes: ec0328e46d ("fscache: Maintain a catalogue of allocated cookies") Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> cc: linux-cachefs@redhat.com Link: https://lore.kernel.org/r/162431201844.2908479.8293647220901514696.stgit@warthog.procyon.org.uk/ Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-09-22 11:48:02 +02:00
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Kconfig	…
Makefile	…
cache.c	fscache: Fix reference overput in fscache_attach_object() error handling	2018-07-25 14:49:00 +01:00
cookie.c	fscache: Fix cookie key hashing	2021-09-22 11:48:02 +02:00
fsdef.c	…
histogram.c	…
internal.h	fscache: Fix cookie key hashing	2021-09-22 11:48:02 +02:00
main.c	fscache: Fix cookie key hashing	2021-09-22 11:48:02 +02:00
netfs.c	…
object-list.c	…
object.c	fscache: fix race between enablement and dropping of object	2018-12-17 09:24:40 +01:00
operation.c	fscache: Allow cancelled operations to be enqueued	2018-07-25 14:31:20 +01:00
page.c	…
proc.c	…
stats.c	…