Messages in this thread Patch in this message | | | From | Artem Bityutskiy <> | Date | Fri, 23 Mar 2007 18:44:27 +0200 | Subject | [PATCH 18/20 take 4] UBI: JFFS2 UBI support |
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diff -auNrp tmp-from/fs/jffs2/fs.c tmp-to/fs/jffs2/fs.c --- tmp-from/fs/jffs2/fs.c 2007-03-23 18:20:01.000000000 +0200 +++ tmp-to/fs/jffs2/fs.c 2007-03-23 18:20:02.000000000 +0200 @@ -672,6 +672,13 @@ static int jffs2_flash_setup(struct jffs return ret; } + /* and an UBI volume */ + if (jffs2_ubivol(c)) { + ret = jffs2_ubivol_setup(c); + if (ret) + return ret; + } + return ret; } @@ -690,4 +697,9 @@ void jffs2_flash_cleanup(struct jffs2_sb 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 -auNrp tmp-from/fs/jffs2/os-linux.h tmp-to/fs/jffs2/os-linux.h --- tmp-from/fs/jffs2/os-linux.h 2007-03-23 18:20:01.000000000 +0200 +++ tmp-to/fs/jffs2/os-linux.h 2007-03-23 18:20:02.000000000 +0200 @@ -98,6 +98,9 @@ static inline void jffs2_init_inode_info #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 */ @@ -133,6 +136,9 @@ void jffs2_nand_flash_cleanup(struct jff #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 -auNrp tmp-from/fs/jffs2/wbuf.c tmp-to/fs/jffs2/wbuf.c --- tmp-from/fs/jffs2/wbuf.c 2007-03-23 18:20:01.000000000 +0200 +++ tmp-to/fs/jffs2/wbuf.c 2007-03-23 18:20:02.000000000 +0200 @@ -1274,3 +1274,27 @@ int jffs2_nor_wbuf_flash_setup(struct jf 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); +} diff -auNrp tmp-from/include/mtd/mtd-abi.h tmp-to/include/mtd/mtd-abi.h --- tmp-from/include/mtd/mtd-abi.h 2007-03-23 18:20:01.000000000 +0200 +++ tmp-to/include/mtd/mtd-abi.h 2007-03-23 18:20:02.000000000 +0200 @@ -24,6 +24,7 @@ struct mtd_oob_buf { #define MTD_NORFLASH 3 #define MTD_NANDFLASH 4 #define MTD_DATAFLASH 6 +#define MTD_UBIVOLUME 7 #define MTD_WRITEABLE 0x400 /* Device is writeable */ #define MTD_BIT_WRITEABLE 0x800 /* Single bits can be flipped */ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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