mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-10-29 23:53:32 +00:00
Code Issues Releases Wiki Activity

staging: lustre: llite: do post work for statahead in readdir case

Browse source 
Increase the post-work for the statahead thread in the readdir
case since it can become very busy.

Signed-off-by: wang di <di.wang@intel.com>
Reviewed-on: http://review.whamcloud.com/10761
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-4906
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@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:
wang di 2016-07-21 22:44:11 -04:00 committed by Greg Kroah-Hartman
parent 218ba48524
commit 2afad7fc9f
2 changed files with 9 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
drivers/staging/lustre/lustre/llite/llite_internal.h
View file

@ -997,7 +997,8 @@ struct ll_statahead_info {
unsigned int sai_ls_all:1, /* "ls -al", do stat-ahead for
* hidden entries
*/
sai_agl_valid:1;/* AGL is valid for the dir */
sai_agl_valid:1,/* AGL is valid for the dir */
sai_in_readpage:1;/* statahead is in readdir() */
wait_queue_head_t sai_waitq; /* stat-ahead wait queue */
struct ptlrpc_thread sai_thread; /* stat-ahead thread */
struct ptlrpc_thread sai_agl_thread; /* AGL thread */

7
drivers/staging/lustre/lustre/llite/statahead.c
View file

@ -1231,7 +1231,9 @@ static int ll_statahead_thread(void *arg)
*/
ll_release_page(page, le32_to_cpu(dp->ldp_flags) &
LDF_COLLIDE);
sai->sai_in_readpage = 1;
page = ll_get_dir_page(dir, pos, &chain);
sai->sai_in_readpage = 0;
}
}
@ -1550,6 +1552,11 @@ int do_statahead_enter(struct inode *dir, struct dentry **dentryp,
return entry ? 1 : -EAGAIN;
}
/* if statahead is busy in readdir, help it do post-work */
while (!ll_sa_entry_stated(entry) && sai->sai_in_readpage &&
!sa_received_empty(sai))
ll_post_statahead(sai);
if (!ll_sa_entry_stated(entry)) {
sai->sai_index_wait = entry->se_index;
lwi = LWI_TIMEOUT_INTR(cfs_time_seconds(30), NULL,