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fs: move inode_dio_done to the end_io handler

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For filesystems that delay their end_io processing we should keep our
i_dio_count until the the processing is done.  Enable this by moving
the inode_dio_done call to the end_io handler if one exist.  Note that
the actual move to the workqueue for ext4 and XFS is not done in
this patch yet, but left to the filesystem maintainers.  At least
for XFS it's not needed yet either as XFS has an internal equivalent
to i_dio_count.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Christoph Hellwig 2011-06-24 14:29:48 -04:00 • committed by Al Viro
parent aacfc19c62
commit 72c5052ddc
4 changed files with 13 additions and 3 deletions
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7
fs/direct-io.c
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@ -293,11 +293,12 @@ static ssize_t dio_complete(struct dio *dio, loff_t offset, ssize_t ret, bool is
if (dio->end_io && dio->result) {
dio->end_io(dio->iocb, offset, transferred,
dio->map_bh.b_private, ret, is_async);
} else if (is_async) {
aio_complete(dio->iocb, ret, 0);
} else {
if (is_async)
aio_complete(dio->iocb, ret, 0);
inode_dio_done(dio->inode);
}
inode_dio_done(dio->inode);
return ret;
}