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ext4: Use single thread to perform DIO unwritten convertion

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While running ext4 testing on multiple core, we found there are per
cpu ext4-dio-unwritten threads processing conversion from unwritten
extents to written for IOs completed from async direct IO patch.  Per
filesystem is enough, we don't need per cpu threads to work on
conversion.

Signed-off-by: Mingming Cao <cmm@us.ibm.com>
This commit is contained in:
Mingming Cao 2011-03-05 11:52:45 -05:00 committed by Theodore Ts'o
parent b616844310
commit 198868f35d
1 changed files with 1 additions and 1 deletions
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2
fs/ext4/super.c
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@ -3514,7 +3514,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
percpu_counter_set(&sbi->s_dirtyblocks_counter, 0);
no_journal:
EXT4_SB(sb)->dio_unwritten_wq = create_workqueue("ext4-dio-unwritten");
EXT4_SB(sb)->dio_unwritten_wq = create_singlethread_workqueue("ext4-dio-unwritten");
if (!EXT4_SB(sb)->dio_unwritten_wq) {
printk(KERN_ERR "EXT4-fs: failed to create DIO workqueue\n");
goto failed_mount_wq;