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Xin Yin
1122f40072
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 <[email protected]>
Signed-off-by: Xin Yin <[email protected]>
Signed-off-by: David Howells <[email protected]>
Reviewed-by: Jeffle Xu <[email protected]>
Reviewed-by: Gao Xiang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]/ # v1
Link: https://lore.kernel.org/r/[email protected]/ # v2