tree 5eccbbc0cc8d2b2d4b465f1739d1487b5e26b124
parent 5694fe9aadbb26874d2791de1db6ac08aa1b4c14
author Christoph Hellwig <hch@lst.de> 1475448454 +1100
committer Dave Chinner <david@fromorbit.com> 1475448454 +1100

xfs: update atime before I/O in xfs_file_dio_aio_read

After the call to __blkdev_direct_IO the final reference to the file
might have been dropped by aio_complete already, and the call to
file_accessed might cause a use after free.

Instead update the access time before the I/O, similar to how we
update the time stamps before writes.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reported-and-tested-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>