sunrpc: clean cache_detail immediately when flush is written frequently

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We will write /proc/net/rpc/xxx/flush if we want to clean cache_detail.
This updates nextcheck to the current time and calls cache_flush -->
cache_clean to clean cache_detail.
If we write this interface again within one second, it will only increase
flush_time and nextcheck without actually cleaning cache_detail.
Therefore, if we keep writing this interface repeatedly within one second,
flush_time and nextcheck will keep increasing, even far exceeding the
current time, making it impossible to clear cache_detail through the flush
interface or cache_cleaner.
If someone frequently calls the flush interface, we should immediately
clean the corresponding cache_detail instead of continuously accumulating
nextcheck.

Signed-off-by: Li Lingfeng <lilingfeng3@huawei.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>

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Li Lingfeng 2024-12-27 16:33:53 +08:00 • committed by Chuck Lever

parent 80e54e8491

commit fc2a169c56

1 changed files with 5 additions and 1 deletions

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net/sunrpc/cache.c

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