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block: remove BLKDEV_IFL_WAIT

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All the blkdev_issue_* helpers can only sanely be used for synchronous
caller.  To issue cache flushes or barriers asynchronously the caller needs
to set up a bio by itself with a completion callback to move the asynchronous
state machine ahead.  So drop the BLKDEV_IFL_WAIT flag that is always
specified when calling blkdev_issue_* and also remove the now unused flags
argument to blkdev_issue_flush and blkdev_issue_zeroout.  For
blkdev_issue_discard we need to keep it for the secure discard flag, which
gains a more descriptive name and loses the bitops vs flag confusion.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
This commit is contained in:
Christoph Hellwig
2010-09-16 20:51:46 +02:00
committed by Jens Axboe
parent 8786fb70cc
commit dd3932eddf
19 changed files with 47 additions and 71 deletions
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fs/fat/fatent.c
+1 -2
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@@ -578,8 +578,7 @@ int fat_free_clusters(struct inode *inode, int cluster)
sb_issue_discard(sb,
fat_clus_to_blknr(sbi, first_cl),
nr_clus * sbi->sec_per_clus,
GFP_NOFS,
BLKDEV_IFL_WAIT);
GFP_NOFS, 0);
first_cl = cluster;
}