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authorJunxiao Bi <junxiao.bi@oracle.com>2012-06-27 17:09:54 +0800
committerJoel Becker <jlbec@evilplan.org>2012-07-05 01:33:59 -0700
commit2dfd06036ba7ae8e7be2daf5a2fff1dac42390bf (patch)
tree5f3e2cb5b2c07dcf835e45629733b353fe67d8d6 /Documentation/dynamic-debug-howto.txt
parenta4564ead763a9264edbec6d4e72aa273f05eb39c (diff)
aio: make kiocb->private NUll in init_sync_kiocb()
Ocfs2 uses kiocb.*private as a flag of unsigned long size. In commit a11f7e6 ocfs2: serialize unaligned aio, the unaligned io flag is involved in it to serialize the unaligned aio. As *private is not initialized in init_sync_kiocb() of do_sync_write(), this unaligned io flag may be unexpectly set in an aligned dio. And this will cause OCFS2_I(inode)->ip_unaligned_aio decreased to -1 in ocfs2_dio_end_io(), thus the following unaligned dio will hang forever at ocfs2_aiodio_wait() in ocfs2_file_aio_write(). Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com> Cc: stable@vger.kernel.org Acked-by: Jeff Moyer <jmoyer@redhat.com> Signed-off-by: Joel Becker <jlbec@evilplan.org>
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