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authorAlexey Dobriyan <adobriyan@gmail.com>2006-09-29 02:00:01 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-09-29 09:18:11 -0700
commit50462062a02226a698a211d5bd535376c89b8603 (patch)
tree07a34af458b338c609a35072b8c6fd1ed2a235a1 /include/linux/security.h
parentcfe14677f286c9be5d683b88214def8f4b8a6f24 (diff)
[PATCH] fs.h: ifdef security fields
[assuming BSD security levels are deleted] The only user of i_security, f_security, s_security fields is SELinux, however, quite a few security modules are trying to get into kernel. So, wrap them under CONFIG_SECURITY. Adding config option for each security field is likely an overkill. Following Stephen Smalley's suggestion, i_security initialization is moved to security_inode_alloc() to not clutter core code with ifdefs and make alloc_inode() codepath tiny little bit smaller and faster. The user of (highly greppable) struct fown_struct::security field is still to be found. I've checked every "fown_struct" and every "f_owner" occurence. Additionally it's removal doesn't break i386 allmodconfig build. struct inode, struct file, struct super_block, struct fown_struct become smaller. P.S. Combined with two reiserfs inode shrinking patches sent to linux-fsdevel, I can finally suck 12 reiserfs inodes into one page. /proc/slabinfo -ext2_inode_cache 388 10 +ext2_inode_cache 384 10 -inode_cache 280 14 +inode_cache 276 14 -proc_inode_cache 296 13 +proc_inode_cache 292 13 -reiser_inode_cache 336 11 +reiser_inode_cache 332 12 <= -shmem_inode_cache 372 10 +shmem_inode_cache 368 10 Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/security.h')
-rw-r--r--include/linux/security.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/security.h b/include/linux/security.h
index 9f56fb8a4a6..9b5fea81f55 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -1595,6 +1595,7 @@ static inline void security_sb_post_pivotroot (struct nameidata *old_nd,
static inline int security_inode_alloc (struct inode *inode)
{
+ inode->i_security = NULL;
return security_ops->inode_alloc_security (inode);
}