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authorKaiGai Kohei <kaigai@ak.jp.nec.com>2006-05-13 10:09:47 +0400
committerKaiGai Kohei <kaigai@ak.jp.nec.com>2006-05-13 10:09:47 +0400
commitaa98d7cf59b5b0764d3502662053489585faf2fe (patch)
treee98e83f3e69ebe3a1112394a19d440419e899749 /fs/jffs2/jffs2_fs_sb.h
parent4992a9e88886b0c5ebc3d27eb74d0344c873eeea (diff)
downloadlinux-aa98d7cf59b5b0764d3502662053489585faf2fe.tar.xz
[JFFS2][XATTR] XATTR support on JFFS2 (version. 5)
This attached patches provide xattr support including POSIX-ACL and SELinux support on JFFS2 (version.5). There are some significant differences from previous version posted at last December. The biggest change is addition of EBS(Erase Block Summary) support. Currently, both kernel and usermode utility (sumtool) can recognize xattr nodes which have JFFS2_NODETYPE_XATTR/_XREF nodetype. In addition, some bugs are fixed. - A potential race condition was fixed. - Unexpected fail when updating a xattr by same name/value pair was fixed. - A bug when removing xattr name/value pair was fixed. The fundamental structures (such as using two new nodetypes and exclusion mechanism by rwsem) are unchanged. But most of implementation were reviewed and updated if necessary. Espacially, we had to change several internal implementations related to load_xattr_datum() to avoid a potential race condition. [1/2] xattr_on_jffs2.kernel.version-5.patch [2/2] xattr_on_jffs2.utils.version-5.patch Signed-off-by: KaiGai Kohei <kaigai@ak.jp.nec.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Diffstat (limited to 'fs/jffs2/jffs2_fs_sb.h')
-rw-r--r--fs/jffs2/jffs2_fs_sb.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/jffs2/jffs2_fs_sb.h b/fs/jffs2/jffs2_fs_sb.h
index 4bcfb5570221..3b4e0edd6dbb 100644
--- a/fs/jffs2/jffs2_fs_sb.h
+++ b/fs/jffs2/jffs2_fs_sb.h
@@ -115,6 +115,16 @@ struct jffs2_sb_info {
struct jffs2_summary *summary; /* Summary information */
+#ifdef CONFIG_JFFS2_FS_XATTR
+#define XATTRINDEX_HASHSIZE (57)
+ uint32_t highest_xid;
+ struct list_head xattrindex[XATTRINDEX_HASHSIZE];
+ struct list_head xattr_temp;
+ struct list_head xattr_unchecked;
+ struct rw_semaphore xattr_sem;
+ uint32_t xdatum_mem_usage;
+ uint32_t xdatum_mem_threshold;
+#endif
/* OS-private pointer for getting back to master superblock info */
void *os_priv;
};