On Tue, 7 Jul 2015 12:29:02 +0530 "Pranay Kr. Srivastava" <pran...@gmail.com>
wrote:
> This patch resolves Bug 16531. When logical blkdev
> size > 512 then sector numbers become larger than
> the device can support.
>
> Make affs start lookup based on the device's logical
> sector size instead of 512.
>
> Reported By: Mark <ma...@clara.co.uk>
> Fix Suggessted By: Mark <ma...@clara.co.uk>
Can you please send your Signed-off-by: for this? It is described in
Documentation/SubmittingPatches section 11.
> --- a/fs/affs/super.c
> +++ b/fs/affs/super.c
> @@ -18,6 +18,7 @@
> #include <linux/sched.h>
> #include <linux/slab.h>
> #include <linux/writeback.h>
> +#include <linux/blkdev.h>
> #include "affs.h"
>
> static int affs_statfs(struct dentry *dentry, struct kstatfs *buf);
> @@ -352,18 +353,19 @@ static int affs_fill_super(struct super_block *sb, void
> *data, int silent)
> * blocks, we will have to change it.
> */
>
> - size = sb->s_bdev->bd_inode->i_size >> 9;
> + size = i_size_read(sb->s_bdev->bd_inode) >> 9;
> pr_debug("initial blocksize=%d, #blocks=%d\n", 512, size);
>
> affs_set_blocksize(sb, PAGE_SIZE);
> /* Try to find root block. Its location depends on the block size. */
>
> - i = 512;
> - j = 4096;
> + i = bdev_logical_block_size(sb->s_bdev);
> + j = PAGE_SIZE;
Some architectures have PAGE_SIZE larger than 4k. What effect will
that have?
> if (blocksize > 0) {
> i = j = blocksize;
> size = size / (blocksize / 512);
> }
> +
> for (blocksize = i; blocksize <= j; blocksize <<= 1, size >>= 1) {
> sbi->s_root_block = root_block;
> if (root_block < 0)
--
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