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authorArtem Bityutskiy <dedekind@infradead.org>2006-10-04 19:15:21 +0300
committerFrank Haverkamp <haver@vnet.ibm.com>2007-04-27 14:24:08 +0300
commit0029da3bf430eea498eee8cef5933f9214534b8a (patch)
tree8fd93094f370e5bde1640df97764ac56d3f118ba /fs/jffs2/wbuf.c
parent801c135ce73d5df1caf3eca35b66a10824ae0707 (diff)
downloadlinux-linaro-0029da3bf430eea498eee8cef5933f9214534b8a.tar.gz
JFFS2: add UBI support
This patch make JFFS2 able to work with UBI volumes via the emulated MTD devices which are directly mapped to these volumes. Signed-off-by: Artem Bityutskiy <dedekind@infradead.org>
Diffstat (limited to 'fs/jffs2/wbuf.c')
-rw-r--r--fs/jffs2/wbuf.c24
1 files changed, 24 insertions, 0 deletions
diff --git a/fs/jffs2/wbuf.c b/fs/jffs2/wbuf.c
index 4fac6dd5395..ab86031b3c0 100644
--- a/fs/jffs2/wbuf.c
+++ b/fs/jffs2/wbuf.c
@@ -1208,3 +1208,27 @@ 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);
+}