From 92abc475d8de1c29373f6d96ed63d8ecaa199d25 Mon Sep 17 00:00:00 2001 From: Andres Salomon Date: Sun, 16 Oct 2011 18:15:16 -0700 Subject: jffs2: implement mount option parsing and compression overriding Currently jffs2 has compile-time constants (and .config options) controlling whether or not the various compression/decompression drivers are built in and enabled. This is fine for embedded systems, but it clashes with distribution kernels. Distro kernels tend to turn on everything; this causes OpenFirmware to fall over, as it understands ZLIB-compressed inodes. Booting a kernel that has LZO compression enabled, writing to the boot partition, and then rebooting causes OFW to fail to read the kernel from the filesystem. This is because LZO compression has priority when writing new data to jffs2, if LZO is enabled. This patch adds mount option parsing, and a single supported option ("compr=none"). This adds the flexibility of being able to specify which compressor overrides on a per-superblock basis. For now, we can simply disable compression; additional flexibility coming soon. v2: kill some printks, and implement show_options as suggested by Artem Bityutskiy. Signed-off-by: Andres Salomon Signed-off-by: Artem Bityutskiy --- fs/jffs2/fs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/jffs2/fs.c') diff --git a/fs/jffs2/fs.c b/fs/jffs2/fs.c index bbcb9755dd2b..5d54b4ed1b6c 100644 --- a/fs/jffs2/fs.c +++ b/fs/jffs2/fs.c @@ -379,7 +379,7 @@ void jffs2_dirty_inode(struct inode *inode, int flags) jffs2_do_setattr(inode, &iattr); } -int jffs2_remount_fs (struct super_block *sb, int *flags, char *data) +int jffs2_do_remount_fs(struct super_block *sb, int *flags, char *data) { struct jffs2_sb_info *c = JFFS2_SB_INFO(sb); -- cgit v1.2.3-70-g09d2