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fs: simplify the blockdev_direct_IO prototype

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Simple filesystems always pass inode->i_sb_bdev as the block device
argument, and never need a end_io handler.  Let's simply things for
them and for my grepping activity by dropping these arguments.  The
only thing not falling into that scheme is ext4, which passes and
end_io handler without needing special flags (yet), but given how
messy the direct I/O code there is use of __blockdev_direct_IO
in one instead of two out of three cases isn't going to make a large
difference anyway.

Signed-off-by: Christoph Hellwig <[email protected]>
Signed-off-by: Al Viro <[email protected]>
This commit is contained in:
Christoph Hellwig 2011-06-24 14:29:47 -04:00 • committed by Al Viro
commit aacfc19c62
10 changed files with 26 additions and 29 deletions
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4
fs/fat/inode.c
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@ -211,8 +211,8 @@ static ssize_t fat_direct_IO(int rw, struct kiocb *iocb,
* FAT need to use the DIO_LOCKING for avoiding the race
* condition of fat_get_block() and ->truncate().
*/
ret = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev,
iov, offset, nr_segs, fat_get_block, NULL);
ret = blockdev_direct_IO(rw, iocb, inode, iov, offset, nr_segs,
fat_get_block);
if (ret < 0 && (rw & WRITE))
fat_write_failed(mapping, offset + iov_length(iov, nr_segs));