staging: lustre: statahead: use dcache-like interface for sa entry

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Rename ll_sa_entry to sa_entry, and manage sa_entry cache with
dcache-like interfaces.

sa_entry is not needed to be refcounted, because only scanner
can free it, so after it's put in stat list, statahead thread
shouldn't access it any longer.

ll_statahead_interpret() doesn't need to take sai refcount,
because statahead thread will wait for all inflight RPC to
finish.

Signed-off-by: Lai Siyao <lai.siyao@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3270
Reviewed-on: http://review.whamcloud.com/9664
Reviewed-by: James Simmons <uja.ornl@gmail.com>
Reviewed-by: Fan Yong <fan.yong@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

Lai Siyao 2016-09-18 16:37:55 -04:00 • committed by Greg Kroah-Hartman

parent dbf789ce9d

commit e554fbfffc

3 changed files with 207 additions and 266 deletions

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2

drivers/staging/lustre/lustre/include/obd.h

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10

drivers/staging/lustre/lustre/llite/llite_internal.h

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465

drivers/staging/lustre/lustre/llite/statahead.c

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