[XFS] Flush and invalidate dirty pages at the start of a direct read also,


else we can hit a delalloc-extents-via-direct-io BUG.

SGI-PV: 949916
SGI-Modid: xfs-linux-melb:xfs-kern:25483a

Signed-off-by: Nathan Scott <nathans@sgi.com>

parent ce9d37c2

fs/xfs/linux-2.6/xfs_lrw.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -270,6 +270,10 @@ xfs_read(
		}
		}

		if (unlikely((ioflags & IO_ISDIRECT) && VN_CACHED(vp)))
		VOP_FLUSHINVAL_PAGES(vp, ctooff(offtoct(*offset)),
		-1, FI_REMAPF_LOCKED);

		xfs_rw_enter_trace(XFS_READ_ENTER, &ip->i_iocore,
		(void )iovp, segs, offset, ioflags);
		ret = __generic_file_aio_read(iocb, iovp, segs, offset);