Xin Yin 1122f40072 cachefiles: make on-demand request distribution fairer ... For now, enqueuing and dequeuing on-demand requests all start from idx 0, this makes request distribution unfair. In the weighty concurrent I/O scenario, the request stored in higher idx will starve. Searching requests cyclically in cachefiles_ondemand_daemon_read, makes distribution fairer. Fixes: c838305450 ("cachefiles: notify the user daemon when looking up cookie") Reported-by: Yongqing Li <liyongqing@bytedance.com> Signed-off-by: Xin Yin <yinxin.x@bytedance.com> Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Jeffle Xu <jefflexu@linux.alibaba.com> Reviewed-by: Gao Xiang <hsiangkao@linux.alibaba.com> Link: https://lore.kernel.org/r/20220817065200.11543-1-yinxin.x@bytedance.com/ # v1 Link: https://lore.kernel.org/r/20220825020945.2293-1-yinxin.x@bytedance.com/ # v2		2022-08-31 16:41:10 +01:00
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Kconfig	cachefiles: notify the user daemon when looking up cookie	2022-05-18 00:11:17 +08:00
Makefile	cachefiles: notify the user daemon when looking up cookie	2022-05-18 00:11:17 +08:00
cache.c	cachefiles: Check that the backing filesystem supports tmpfiles	2022-01-21 21:36:28 +00:00
daemon.c	cachefiles: enable on-demand read mode	2022-05-18 00:11:18 +08:00
error_inject.c	cachefiles: Add some error injection support	2022-01-07 13:40:56 +00:00
interface.c	cachefiles: notify the user daemon when withdrawing cookie	2022-05-18 00:11:17 +08:00
internal.h	cachefiles: make on-demand request distribution fairer	2022-08-31 16:41:10 +01:00
io.c	cachefiles: implement on-demand read	2022-05-18 00:11:18 +08:00
key.c	cachefiles: Implement key to filename encoding	2022-01-07 13:42:16 +00:00
main.c	cachefiles: Implement object lifecycle funcs	2022-01-07 13:42:08 +00:00
namei.c	cachefiles: notify the user daemon when looking up cookie	2022-05-18 00:11:17 +08:00
ondemand.c	cachefiles: make on-demand request distribution fairer	2022-08-31 16:41:10 +01:00
security.c	cachefiles: Add security derivation	2022-01-07 13:41:14 +00:00
volume.c	fscache, cachefiles: Store the volume coherency data	2022-01-07 13:43:03 +00:00
xattr.c	cachefiles: Fix KASAN slab-out-of-bounds in cachefiles_set_volume_xattr	2022-04-08 23:32:40 +01:00