linux-kernel - [PATCH 001/001] hostfs: set maximum filesize in superblock for proper LFS support

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Date:	Mon, 29 Jun 2009 23:59:01 +0200
From:	Wolfgang Illmeyer <wolfgang@...meyer.com>
To:	akpm@...ux-foundation.org
Cc:	linux-kernel@...r.kernel.org, trivial@...nel.org, jdike@...toit.com
Subject: [PATCH 001/001] hostfs: set maximum filesize in superblock for proper LFS support

From: Wolfgang Illmeyer <wolfgang@...meyer.com>

Maximum file size for hostfs mounts defaults to 2GB, so bigger files cannot be 
read/written through hostfs. This patch initializes the maximum file size to 
MAX_LFS_SIZE.
Signed-off-by: Wolfgang Illmeyer <wolfgang@...meyer.com>
---
This patch applies against linux-2.6.30. It fixes 
http://bugzilla.kernel.org/show_bug.cgi?id=13531
It is a revamped version of the patch I attached to the bug, using additional 
input from Andrew Morton (thanks). This is my first patch for the kernel, I 
hope I didn't break too many rules ;)

For any feedback from the mailing list please add me to "To" or CC me - I'm 
not on the list.

--- fs/hostfs/hostfs_kern.c.orig   2009-06-29 23:13:05.000000000 +0200
+++ fs/hostfs/hostfs_kern.c        2009-06-29 23:14:43.000000000 +0200
@@ -972,6 +972,7 @@ static int hostfs_fill_sb_common(struct
        sb->s_blocksize_bits = 10;
        sb->s_magic = HOSTFS_SUPER_MAGIC;
        sb->s_op = &hostfs_sbops;
+       sb->s_maxbytes = MAX_LFS_FILESIZE;

        /* NULL is printed as <NULL> by sprintf: avoid that. */
        if (req_root == NULL)

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