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Commit edb5ac89 authored by Yongqiang Yang's avatar Yongqiang Yang Committed by Theodore Ts'o
Browse files

ext4: let ext4_discard_partial_buffers handle unaligned range correctly 



As comment says, we should handle unaligned range rather than aligned
one.  This fixes a bug found by running xfstests #91.

Signed-off-by: default avatarYongqiang Yang <xiaoqiangnk@gmail.com>
parent 5129d05f

fs/ext4/inode.c

+2 −2
Original line number Diff line number Diff line
@@ -3206,8 +3206,8 @@ int ext4_discard_partial_page_buffers_no_lock(handle_t *handle, 
		 * to be updated with the contents of the block before

		 * we write the zeros on top of it.

		 */

		if (!(from & (blocksize - 1)) ||

		    !((from + length) & (blocksize - 1))) {

		if ((from & (blocksize - 1)) ||

		    ((from + length) & (blocksize - 1))) {

			create_empty_buffers(page, blocksize, 0);

		} else {

			/*