linux-stable

mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2025-01-09 22:50:41 +00:00

History

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: c8383054506c ("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

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