mtd: block2mtd: initialize writebufsize

[Linux-MTD Mailing List]

Gitweb:     http://git.infradead.org/?p=mtd-2.6.git;a=commit;h=b604387411ec6a072e95910099262616edd2bd2f
Commit:     b604387411ec6a072e95910099262616edd2bd2f
Parent:     045ead345b53c6186303f1413f90154f3137f457
Author:     Artem Bityutskiy <artem.bityutskiy at linux.intel.com>
AuthorDate: Fri Feb 3 09:32:44 2012 +0200
Committer:  David Woodhouse <David.Woodhouse at intel.com>
CommitDate: Tue Mar 27 00:22:14 2012 +0100

    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 <artem.bityutskiy at linux.intel.com>
    Acked-by: Joern Engel <joern at lazybastard.org>
    Cc: stable at kernel.org [2.6.38+]
    Signed-off-by: David Woodhouse <David.Woodhouse at intel.com>
---
 drivers/mtd/devices/block2mtd.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/mtd/devices/block2mtd.c b/drivers/mtd/devices/block2mtd.c
index d9e75da..0fccf14 100644
--- 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;