Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=fe08a9d4982d9618ec25760ea715c46fe051e508
Commit: fe08a9d4982d9618ec25760ea715c46fe051e508
Parent: 6f2fad748ccced5b9313efce2a2c7ae4c04ef564
Author: Alexey Dobriyan <[EMAIL PROTECTED]>
AuthorDate: Tue May 8 00:24:55 2007 -0700
Committer: Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Tue May 8 11:15:00 2007 -0700
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 <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
fs/reiserfs/super.c | 6 ++++--
include/linux/reiserfs_fs_sb.h | 3 ++-
2 files changed, 6 insertions(+), 3 deletions(-)
diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c
index 7054aae..5c58b41 100644
--- a/fs/reiserfs/super.c
+++ b/fs/reiserfs/super.c
@@ -433,12 +433,13 @@ int remove_save_link(struct inode *inode, int truncate)
static void reiserfs_kill_sb(struct super_block *s)
{
if (REISERFS_SB(s)) {
+#ifdef CONFIG_REISERFS_FS_XATTR
if (REISERFS_SB(s)->xattr_root) {
d_invalidate(REISERFS_SB(s)->xattr_root);
dput(REISERFS_SB(s)->xattr_root);
REISERFS_SB(s)->xattr_root = NULL;
}
-
+#endif
if (REISERFS_SB(s)->priv_root) {
d_invalidate(REISERFS_SB(s)->priv_root);
dput(REISERFS_SB(s)->priv_root);
@@ -1562,9 +1563,10 @@ static int reiserfs_fill_super(struct super_block *s,
void *data, int silent)
REISERFS_SB(s)->s_alloc_options.preallocmin = 0;
/* Preallocate by 16 blocks (17-1) at once */
REISERFS_SB(s)->s_alloc_options.preallocsize = 17;
+#ifdef CONFIG_REISERFS_FS_XATTR
/* Initialize the rwsem for xattr dir */
init_rwsem(&REISERFS_SB(s)->xattr_dir_sem);
-
+#endif
/* setup default block allocator options */
reiserfs_init_alloc_options(s);
diff --git a/include/linux/reiserfs_fs_sb.h b/include/linux/reiserfs_fs_sb.h
index 3a28742..1e5488e 100644
--- a/include/linux/reiserfs_fs_sb.h
+++ b/include/linux/reiserfs_fs_sb.h
@@ -401,9 +401,10 @@ struct reiserfs_sb_info {
int reserved_blocks; /* amount of blocks reserved for further
allocations */
spinlock_t bitmap_lock; /* this lock on now only used to protect
reserved_blocks variable */
struct dentry *priv_root; /* root of /.reiserfs_priv */
+#ifdef CONFIG_REISERFS_FS_XATTR
struct dentry *xattr_root; /* root of /.reiserfs_priv/.xa */
struct rw_semaphore xattr_dir_sem;
-
+#endif
int j_errno;
#ifdef CONFIG_QUOTA
char *s_qf_names[MAXQUOTAS];
-
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