Messages in this thread Patch in this message | | | Date | Wed, 11 Apr 2012 16:13:12 -0700 | From | Greg KH <> | Subject | [ 05/42] mtd: block2mtd: initialize writebufsize |
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3.0-stable review patch. If anyone has any objections, please let me know.
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From: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
commit b604387411ec6a072e95910099262616edd2bd2f upstream.
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@linux.intel.com> Acked-by: Joern Engel <joern@lazybastard.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/mtd/devices/block2mtd.c | 1 + 1 file changed, 1 insertion(+)
--- a/drivers/mtd/devices/block2mtd.c +++ b/drivers/mtd/devices/block2mtd.c @@ -284,6 +284,7 @@ static struct block2mtd_dev *add_device( 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;
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