Merge git://git.infradead.org/mtd-2.6

* git://git.infradead.org/mtd-2.6:
  [MTD] NAND: Select chip before checking write protect status
  [MTD] CORE mtdchar.c: fix off-by-one error in lseek()
  [MTD] NAND: Fix typo in mtd/nand/ts7250.c
  [JFFS2][XATTR] coexistence between xattr and write buffering support.
  [JFFS2][XATTR] Fix wrong copyright
  [JFFS2][XATTR] Re-define xd->refcnt as atomic_t
  [JFFS2][XATTR] Fix memory leak with jffs2_xattr_ref
  [JFFS2][XATTR] rid unnecessary writing of delete marker.
  [JFFS2][XATTR] Fix ACL bug when updating null xattr by null ACL.
  [JFFS2][XATTR] using 'delete marker' for xdatum/xref deletion
  [MTD] Fix off-by-one error in physmap.c
  [MTD] Remove unused 'nr_banks' variable from ixp2000 map driver
  [MTD NAND] s3c2412 support in s3c2410.c
  [MTD] Initialize 'writesize'
  [MTD] NAND: ndfc fix address offset thinko
  [MTD] NAND: S3C2410 convert prinks to dev_*()s
  [MTD] NAND: Missing fixups

1 files changed, 17 insertions, 4 deletions

diff --git a/fs/jffs2/xattr.h b/fs/jffs2/xattr.h
index 2c199856c58..06a5c69dcf8 100644
--- a/fs/jffs2/xattr.h
+++ b/fs/jffs2/xattr.h
@@ -16,6 +16,8 @@
 
 #define JFFS2_XFLAGS_HOT	(0x01)	/* This datum is HOT */
 #define JFFS2_XFLAGS_BIND	(0x02)	/* This datum is not reclaimed */
+#define JFFS2_XFLAGS_DEAD	(0x40)	/* This datum is already dead */
+#define JFFS2_XFLAGS_INVALID	(0x80)	/* This datum contains crc error */
 
 struct jffs2_xattr_datum
 {
@@ -23,10 +25,10 @@ struct jffs2_xattr_datum
 	struct jffs2_raw_node_ref *node;
 	uint8_t class;
 	uint8_t flags;
-	uint16_t xprefix;			/* see JFFS2_XATTR_PREFIX_* */
+	uint16_t xprefix;		/* see JFFS2_XATTR_PREFIX_* */
 
 	struct list_head xindex;	/* chained from c->xattrindex[n] */
-	uint32_t refcnt;		/* # of xattr_ref refers this */
+	atomic_t refcnt;		/* # of xattr_ref refers this */
 	uint32_t xid;
 	uint32_t version;
 
@@ -47,6 +49,7 @@ struct jffs2_xattr_ref
 	uint8_t flags;		/* Currently unused */
 	u16 unused;
 
+	uint32_t xseqno;
 	union {
 		struct jffs2_inode_cache *ic;	/* reference to jffs2_inode_cache */
 		uint32_t ino;			/* only used in scanning/building  */
@@ -58,6 +61,12 @@ struct jffs2_xattr_ref
 	struct jffs2_xattr_ref *next;		/* chained from ic->xref_list */
 };
 
+#define XREF_DELETE_MARKER	(0x00000001)
+static inline int is_xattr_ref_dead(struct jffs2_xattr_ref *ref)
+{
+	return ((ref->xseqno & XREF_DELETE_MARKER) != 0);
+}
+
 #ifdef CONFIG_JFFS2_FS_XATTR
 
 extern void jffs2_init_xattr_subsystem(struct jffs2_sb_info *c);
@@ -70,9 +79,13 @@ extern struct jffs2_xattr_datum *jffs2_setup_xattr_datum(struct jffs2_sb_info *c
 extern void jffs2_xattr_delete_inode(struct jffs2_sb_info *c, struct jffs2_inode_cache *ic);
 extern void jffs2_xattr_free_inode(struct jffs2_sb_info *c, struct jffs2_inode_cache *ic);
 
-extern int jffs2_garbage_collect_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *xd);
-extern int jffs2_garbage_collect_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref);
+extern int jffs2_garbage_collect_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *xd,
+					     struct jffs2_raw_node_ref *raw);
+extern int jffs2_garbage_collect_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref,
+					   struct jffs2_raw_node_ref *raw);
 extern int jffs2_verify_xattr(struct jffs2_sb_info *c);
+extern void jffs2_release_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *xd);
+extern void jffs2_release_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref);
 
 extern int do_jffs2_getxattr(struct inode *inode, int xprefix, const char *xname,
 			     char *buffer, size_t size);