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Btrfs: Only do async bio submission for pdflush 

Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason 2008-04-16 13:06:16 -04:00
parent 699122f559
commit 7b859fe7cd
1 changed files with 7 additions and 0 deletions
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7
fs/btrfs/disk-io.c
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@ -381,6 +381,13 @@ int btrfs_wq_submit_bio(struct btrfs_fs_info *fs_info, struct inode *inode,
{ {
struct async_submit_bio *async; struct async_submit_bio *async;
/*
* inline writerback should stay inline, only hop to the async
* queue if we're pdflush
*/
if (!current_is_pdflush())
return submit_bio_hook(inode, rw, bio, mirror_num);
async = kmalloc(sizeof(*async), GFP_NOFS); async = kmalloc(sizeof(*async), GFP_NOFS);
if (!async) if (!async)
return -ENOMEM; return -ENOMEM;