David Howells 9bab2bc4c2 fscache: Fix cookie key hashing ... [ Upstream commit 35b72573e977ed6b18b094136a4fa3e0ffb13603 ] 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>		2021-09-18 13:40:15 +02:00
..
cache.c
cookie.c	fscache: Fix cookie key hashing	2021-09-18 13:40:15 +02:00
fsdef.c
histogram.c
internal.h	fscache: Fix cookie key hashing	2021-09-18 13:40:15 +02:00
Kconfig
main.c	fscache: Fix cookie key hashing	2021-09-18 13:40:15 +02:00
Makefile
netfs.c
object-list.c
object.c
operation.c
page.c
proc.c
stats.c