3 files changed, 42 insertions, 0 deletions

diff --git a/fs/jffs2/fs.c b/fs/jffs2/fs.c
index 23029f42ae8c..1d3b7a9fc828 100644
--- a/fs/jffs2/fs.c
+++ b/fs/jffs2/fs.c
@@ -670,6 +670,13 @@ static int jffs2_flash_setup(struct jffs2_sb_info *c) {
                         return ret;
         }
 
+        /* and an UBI volume */
+        if (jffs2_ubivol(c)) {
+                ret = jffs2_ubivol_setup(c);
+                if (ret)
+                        return ret;
+        }
+
         return ret;
 }
 
@@ -688,4 +695,9 @@ void jffs2_flash_cleanup(struct jffs2_sb_info *c) {
         if (jffs2_nor_wbuf_flash(c)) {
                 jffs2_nor_wbuf_flash_cleanup(c);
         }
+
+        /* and an UBI volume */
+        if (jffs2_ubivol(c)) {
+                jffs2_ubivol_cleanup(c);
+        }
 }
diff --git a/fs/jffs2/os-linux.h b/fs/jffs2/os-linux.h
index 2379c7e88735..80daea96bbc2 100644
--- a/fs/jffs2/os-linux.h
+++ b/fs/jffs2/os-linux.h
@@ -96,6 +96,9 @@ static inline void jffs2_init_inode_info(struct jffs2_inode_info *f)
 #define jffs2_nor_wbuf_flash(c) (0)
 #define jffs2_nor_wbuf_flash_setup(c) (0)
 #define jffs2_nor_wbuf_flash_cleanup(c) do {} while (0)
+#define jffs2_ubivol(c) (0)
+#define jffs2_ubivol_setup(c) (0)
+#define jffs2_ubivol_cleanup(c) do {} while (0)
 
 #else /* NAND and/or ECC'd NOR support present */
 
@@ -131,6 +134,9 @@ void jffs2_nand_flash_cleanup(struct jffs2_sb_info *c);
 #define jffs2_dataflash(c) (c->mtd->type == MTD_DATAFLASH)
 int jffs2_dataflash_setup(struct jffs2_sb_info *c);
 void jffs2_dataflash_cleanup(struct jffs2_sb_info *c);
+#define jffs2_ubivol(c) (c->mtd->type == MTD_UBIVOLUME)
+int jffs2_ubivol_setup(struct jffs2_sb_info *c);
+void jffs2_ubivol_cleanup(struct jffs2_sb_info *c);
 
 #define jffs2_nor_wbuf_flash(c) (c->mtd->type == MTD_NORFLASH && ! (c->mtd->flags & MTD_BIT_WRITEABLE))
 int jffs2_nor_wbuf_flash_setup(struct jffs2_sb_info *c);
diff --git a/fs/jffs2/wbuf.c b/fs/jffs2/wbuf.c
index dafcd4102401..c556e85a565c 100644
--- a/fs/jffs2/wbuf.c
+++ b/fs/jffs2/wbuf.c
@@ -1209,3 +1209,27 @@ int jffs2_nor_wbuf_flash_setup(struct jffs2_sb_info *c) {
 void jffs2_nor_wbuf_flash_cleanup(struct jffs2_sb_info *c) {
         kfree(c->wbuf);
 }
+
+int jffs2_ubivol_setup(struct jffs2_sb_info *c) {
+        c->cleanmarker_size = 0;
+
+        if (c->mtd->writesize == 1)
+                /* We do not need write-buffer */
+                return 0;
+
+        init_rwsem(&c->wbuf_sem);
+
+        c->wbuf_pagesize =  c->mtd->writesize;
+        c->wbuf_ofs = 0xFFFFFFFF;
+        c->wbuf = kmalloc(c->wbuf_pagesize, GFP_KERNEL);
+        if (!c->wbuf)
+                return -ENOMEM;
+
+        printk(KERN_INFO "JFFS2 write-buffering enabled buffer (%d) erasesize (%d)\n", c->wbuf_pagesize, c->sector_size);
+
+        return 0;
+}
+
+void jffs2_ubivol_cleanup(struct jffs2_sb_info *c) {
+        kfree(c->wbuf);
+}