mtd: block2mtd: initialize writebufsize

The writebufsize concept was introduce by commit "0e4ca7e mtd: add writebufsize field to mtd_info struct" and it represents the maximum amount of data the device writes to the media at a time. This is an important parameter for UBIFS which is used during recovery and which basically defines how big a corruption caused by a power cut can be. However, we forgot to set this parameter for block2mtd. Set it to PAGE_SIZE because this is actually the amount of data we write at a time. Signed-off-by: Artem Bityutskiy <[email protected]> Acked-by: Joern Engel <[email protected]> Cc: [email protected] [2.6.38+] Signed-off-by: David Woodhouse <[email protected]>
redpig · Mar 26, 2012 · b604387 · b604387
1 parent 045ead3
commit b604387
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/drivers/mtd/devices/block2mtd.c b/drivers/mtd/devices/block2mtd.c
@@ -283,6 +283,7 @@ static struct block2mtd_dev *add_device(char *devname, int erase_size)
 	dev->mtd.size = dev->blkdev->bd_inode->i_size & PAGE_MASK;
 	dev->mtd.erasesize = erase_size;
 	dev->mtd.writesize = 1;
+	dev->mtd.writebufsize = PAGE_SIZE;
 	dev->mtd.type = MTD_RAM;
 	dev->mtd.flags = MTD_CAP_RAM;
 	dev->mtd._erase = block2mtd_erase;