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authorChristoph Hellwig <hch@lst.de>2010-07-27 11:56:06 -0400
committerTheodore Ts'o <tytso@mit.edu>2010-07-27 11:56:06 -0400
commit552ef8024f909d9b3a7442d0ab0d48a22de24e9e (patch)
tree868af331b76e12c8d17b8449094065a069e0d759 /fs/ext4
parent5c521830cf3dfcf7638d409d8e02ed21020c064f (diff)
direct-io: move aio_complete into ->end_io
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 <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4')
-rw-r--r--fs/ext4/inode.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 699d1d01c5d..609159e990d 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -3775,7 +3775,8 @@ static ext4_io_end_t *ext4_init_io_end (struct inode *inode, gfp_t flags)
}
static void ext4_end_io_dio(struct kiocb *iocb, loff_t offset,
- ssize_t size, void *private)
+ ssize_t size, void *private, int ret,
+ bool is_async)
{
ext4_io_end_t *io_end = iocb->private;
struct workqueue_struct *wq;
@@ -3784,7 +3785,7 @@ static void ext4_end_io_dio(struct kiocb *iocb, loff_t offset,
/* if not async direct IO or dio with 0 bytes write, just return */
if (!io_end || !size)
- return;
+ goto out;
ext_debug("ext4_end_io_dio(): io_end 0x%p"
"for inode %lu, iocb 0x%p, offset %llu, size %llu\n",
@@ -3795,7 +3796,7 @@ static void ext4_end_io_dio(struct kiocb *iocb, loff_t offset,
if (io_end->flag != EXT4_IO_UNWRITTEN){
ext4_free_io_end(io_end);
iocb->private = NULL;
- return;
+ goto out;
}
io_end->offset = offset;
@@ -3812,6 +3813,9 @@ static void ext4_end_io_dio(struct kiocb *iocb, loff_t offset,
list_add_tail(&io_end->list, &ei->i_completed_io_list);
spin_unlock_irqrestore(&ei->i_completed_io_lock, flags);
iocb->private = NULL;
+out:
+ if (is_async)
+ aio_complete(iocb, ret, 0);
}
static void ext4_end_io_buffer_write(struct buffer_head *bh, int uptodate)