Commit 3bd6ad7b authored Mar 08, 2016 by Jan Kara Committed by Theodore Ts'o Mar 08, 2016

ext4: pack ioend structure better



On 64-bit architectures we have two 4-byte holes in struct ext4_io_end.
Order entries better to avoid this and thus make the structure occupy
64 instead of 72 bytes for 64-bit architectures.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

parent cb0d9d47

fs/ext4/ext4.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -182,9 +182,9 @@ typedef struct ext4_io_end {
		struct bio bio; / Linked list of completed
		* bios covering the extent */
		unsigned int flag; /* unwritten or not */
		atomic_t count; /* reference counter */
		loff_t offset; /* offset in the file */
		ssize_t size; /* size of the extent */
		atomic_t count; /* reference counter */
		} ext4_io_end_t;

		struct ext4_io_submit {