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staging: lustre: llite: error setting max_cache_mb at mount time

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The root cause is that when max_cache_mb conf parameter is applied,
the client isn't connected to the OST yet so that sbi->ll_dt_exp is
NULL. However, it's not necessary to shrink the cache memory in this
case so success should be returned.

Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3676
Reviewed-on: http://review.whamcloud.com/7194
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Bobi Jam <bobijam@gmail.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jinshan Xiong 2016-04-12 16:14:07 -04:00 committed by Greg Kroah-Hartman
parent 3c4b9d0972
commit 32cc01c42f
1 changed files with 2 additions and 2 deletions
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4
drivers/staging/lustre/lustre/llite/lproc_llite.c
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@ -460,8 +460,8 @@ static ssize_t ll_max_cached_mb_seq_write(struct file *file,
break;
if (!sbi->ll_dt_exp) { /* being initialized */
rc = -ENODEV;
break;
rc = 0;
goto out;
}
/* difficult - have to ask OSCs to drop LRU slots. */