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authorAlexey Dobriyan <adobriyan@gmail.com>2007-05-08 03:24:55 -0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-08 14:15:00 -0400
commitfe08a9d4982d9618ec25760ea715c46fe051e508 (patch)
tree6535cfaf206d19cb0a5e09192f49b37e91ba6232 /fs/reiserfs
parent6f2fad748ccced5b9313efce2a2c7ae4c04ef564 (diff)
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>
Diffstat (limited to 'fs/reiserfs')
-rw-r--r--fs/reiserfs/super.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c
index 7054aaef0493..5c58b419f4ee 100644
--- a/fs/reiserfs/super.c
+++ b/fs/reiserfs/super.c
@@ -433,12 +433,13 @@ int remove_save_link(struct inode *inode, int truncate)
433static void reiserfs_kill_sb(struct super_block *s) 433static void reiserfs_kill_sb(struct super_block *s)
434{ 434{
435 if (REISERFS_SB(s)) { 435 if (REISERFS_SB(s)) {
436#ifdef CONFIG_REISERFS_FS_XATTR
436 if (REISERFS_SB(s)->xattr_root) { 437 if (REISERFS_SB(s)->xattr_root) {
437 d_invalidate(REISERFS_SB(s)->xattr_root); 438 d_invalidate(REISERFS_SB(s)->xattr_root);
438 dput(REISERFS_SB(s)->xattr_root); 439 dput(REISERFS_SB(s)->xattr_root);
439 REISERFS_SB(s)->xattr_root = NULL; 440 REISERFS_SB(s)->xattr_root = NULL;
440 } 441 }
441 442#endif
442 if (REISERFS_SB(s)->priv_root) { 443 if (REISERFS_SB(s)->priv_root) {
443 d_invalidate(REISERFS_SB(s)->priv_root); 444 d_invalidate(REISERFS_SB(s)->priv_root);
444 dput(REISERFS_SB(s)->priv_root); 445 dput(REISERFS_SB(s)->priv_root);
@@ -1562,9 +1563,10 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
1562 REISERFS_SB(s)->s_alloc_options.preallocmin = 0; 1563 REISERFS_SB(s)->s_alloc_options.preallocmin = 0;
1563 /* Preallocate by 16 blocks (17-1) at once */ 1564 /* Preallocate by 16 blocks (17-1) at once */
1564 REISERFS_SB(s)->s_alloc_options.preallocsize = 17; 1565 REISERFS_SB(s)->s_alloc_options.preallocsize = 17;
1566#ifdef CONFIG_REISERFS_FS_XATTR
1565 /* Initialize the rwsem for xattr dir */ 1567 /* Initialize the rwsem for xattr dir */
1566 init_rwsem(&REISERFS_SB(s)->xattr_dir_sem); 1568 init_rwsem(&REISERFS_SB(s)->xattr_dir_sem);
1567 1569#endif
1568 /* setup default block allocator options */ 1570 /* setup default block allocator options */
1569 reiserfs_init_alloc_options(s); 1571 reiserfs_init_alloc_options(s);
1570 1572