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direct-io: move aio_complete into ->end_io

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Filesystems with unwritten extent support must not complete an AIO request
until the transaction to convert the extent has been commited.  That means
the aio_complete calls needs to be moved into the ->end_io callback so
that the filesystem can control when to call it exactly.

This makes a bit of a mess out of dio_complete and the ->end_io callback
prototype even more complicated. 

Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Jan Kara <[email protected]> 
Signed-off-by: "Theodore Ts'o" <[email protected]>
This commit is contained in:
Christoph Hellwig 2010-07-27 11:56:06 -04:00 • committed by Theodore Ts'o
commit 552ef8024f
6 changed files with 37 additions and 18 deletions
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7
fs/ocfs2/aops.c
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@ -609,7 +609,9 @@ bail:
static void ocfs2_dio_end_io(struct kiocb *iocb,
loff_t offset,
ssize_t bytes,
void *private)
void *private,
int ret,
bool is_async)
{
struct inode *inode = iocb->ki_filp->f_path.dentry->d_inode;
int level;
@ -623,6 +625,9 @@ static void ocfs2_dio_end_io(struct kiocb *iocb,
if (!level)
up_read(&inode->i_alloc_sem);
ocfs2_rw_unlock(inode, level);
if (is_async)
aio_complete(iocb, ret, 0);
}
/*