| commit | fe08a9d4982d9618ec25760ea715c46fe051e508 | |
| author | Alexey Dobriyan <adobriyan@gmail.com> | |
| Tue, 8 May 2007 07:24:55 +0000 (8 00:24 -0700) | ||
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | |
| Tue, 8 May 2007 18:15:00 +0000 (8 11:15 -0700) | ||
| tree | 6535cfaf206d19cb0a5e09192f49b37e91ba6232 | treesnapshot (tar.gz zip) |
| parent | 6f2fad748ccced5b9313efce2a2c7ae4c04ef564 | commitdiff |
reiserfs: shrink superblock if no xattrs
This makes in-core superblock fit into one cacheline here.
Before:
struct dentry * xattr_root; /* 124 4 */
/* --- cacheline 1 boundary (128 bytes) --- */
struct rw_semaphore xattr_dir_sem; /* 128 12 */
int j_errno; /* 140 4 */
}; /* size: 144, cachelines: 2 */
/* sum members: 142, holes: 1, sum holes: 2 */
/* last cacheline: 16 bytes */
After:
int j_errno; /* 124 4 */
/* --- cacheline 1 boundary (128 bytes) --- */
}; /* size: 128, cachelines: 1 */
/* sum members: 126, holes: 1, sum holes: 2 */
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: <reiserfs-dev@namesys.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This makes in-core superblock fit into one cacheline here.
Before:
struct dentry * xattr_root; /* 124 4 */
/* --- cacheline 1 boundary (128 bytes) --- */
struct rw_semaphore xattr_dir_sem; /* 128 12 */
int j_errno; /* 140 4 */
}; /* size: 144, cachelines: 2 */
/* sum members: 142, holes: 1, sum holes: 2 */
/* last cacheline: 16 bytes */
After:
int j_errno; /* 124 4 */
/* --- cacheline 1 boundary (128 bytes) --- */
}; /* size: 128, cachelines: 1 */
/* sum members: 126, holes: 1, sum holes: 2 */
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: <reiserfs-dev@namesys.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| fs/reiserfs/super.c | diffblobblamehistory | |
| include/linux/reiserfs_fs_sb.h | diffblobblamehistory |