From: Marcelo Tosatti <marcelo.tosatti@cyclades.com>
Date: Fri, 3 Feb 2006 11:04:06 +0000 (-0800)
Subject: [PATCH] make "struct d_cookie" depend on CONFIG_PROFILING
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=47ba87e0b1269698801310bfd1716b0538282405;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

[PATCH] make "struct d_cookie" depend on CONFIG_PROFILING

Shrinks "struct dentry" from 128 bytes to 124 on x86, allowing 31 objects
per slab instead of 30.

Cc: John Levon <levon@movementarian.org>
Cc: Philippe Elie <phil.el@wanadoo.fr>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/fs/dcache.c b/fs/dcache.c
index 86bdb93789c..a173bba3266 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -743,7 +743,9 @@ struct dentry *d_alloc(struct dentry * parent, const struct qstr *name)
 	dentry->d_op = NULL;
 	dentry->d_fsdata = NULL;
 	dentry->d_mounted = 0;
+#ifdef CONFIG_PROFILING
 	dentry->d_cookie = NULL;
+#endif
 	INIT_HLIST_NODE(&dentry->d_hash);
 	INIT_LIST_HEAD(&dentry->d_lru);
 	INIT_LIST_HEAD(&dentry->d_subdirs);
diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index a3ed5e059d4..a3f09947940 100644
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -108,7 +108,9 @@ struct dentry {
 	struct dentry_operations *d_op;
 	struct super_block *d_sb;	/* The root of the dentry tree */
 	void *d_fsdata;			/* fs-specific data */
+#ifdef CONFIG_PROFILING
 	struct dcookie_struct *d_cookie; /* cookie, if any */
+#endif
 	int d_mounted;
 	unsigned char d_iname[DNAME_INLINE_LEN_MIN];	/* small names */
 };