On Fri, Mar 15, 2013 at 06:24:38PM -0400, Jeff Mahoney wrote: > Commit d646a02a9d44d1421f273ae3923d97b47b918176 upstream.
Thanks, queuing for 3.5 kernel. Cheers, -- Luis > > blkdev_ioctl(GETBLKSIZE) uses i_size_read() to read size of block > device. If we update block size directly, reader may see intermediate > result in some machines and configurations. Use i_size_write() > instead. > > Signed-off-by: Guo Chao <[email protected]> > Cc: Alexander Viro <[email protected]> > Cc: Guo Chao <[email protected]> > Cc: M. Hindess <[email protected]> > Cc: Nikanth Karthikesan <[email protected]> > Cc: Jens Axboe <[email protected]> > Cc: [email protected] # 3.0 3.2 3.4 3.8 > Signed-off-by: Andrew Morton <[email protected]> > Signed-off-by: Jens Axboe <[email protected]> > Acked-by: Jeff Mahoney <[email protected]> > --- > fs/block_dev.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/fs/block_dev.c b/fs/block_dev.c > index 172f849..82b7c9a 100644 > --- a/fs/block_dev.c > +++ b/fs/block_dev.c > @@ -1032,7 +1032,9 @@ void bd_set_size(struct block_device *bdev, loff_t size) > { > unsigned bsize = bdev_logical_block_size(bdev); > > - bdev->bd_inode->i_size = size; > + mutex_lock(&bdev->bd_inode->i_mutex); > + i_size_write(bdev->bd_inode, size); > + mutex_unlock(&bdev->bd_inode->i_mutex); > while (bsize < PAGE_CACHE_SIZE) { > if (size & bsize) > break; > > > -- > Jeff Mahoney > SUSE Labs > -- > To unsubscribe from this list: send the line "unsubscribe stable" in > the body of a message to [email protected] > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
