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Btrfs: Wait for async bio submissions to make some progress at queue time

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Before, the btrfs bdi congestion function was used to test for too many
async bios.  This keeps that check to throttle pdflush, but also
adds a check while queuing bios.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason 2008-08-20 13:39:41 -04:00
parent 4d1b5fb4d7
commit b64a2851ba
4 changed files with 27 additions and 10 deletions
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1
fs/btrfs/disk-io.h
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@ -73,4 +73,5 @@ int btrfs_wq_submit_bio(struct btrfs_fs_info *fs_info, struct inode *inode,
int rw, struct bio *bio, int mirror_num,
extent_submit_bio_hook_t *submit_bio_hook);
int btrfs_congested_async(struct btrfs_fs_info *info, int iodone);
unsigned long btrfs_async_submit_limit(struct btrfs_fs_info *info);
#endif