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JFFS2: add UBI support

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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>
This commit is contained in:
Artem Bityutskiy
2006-10-04 19:15:21 +03:00
committed by Frank Haverkamp
parent 801c135ce7
commit 0029da3bf4
3 changed files with 42 additions and 0 deletions
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24
fs/jffs2/wbuf.c
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@@ -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);
}