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authorAndres Salomon <dilinger@queued.net>2011-10-17 05:15:16 +0400
committerArtem Bityutskiy <artem.bityutskiy@intel.com>2011-10-19 18:22:20 +0400
commit92abc475d8de1c29373f6d96ed63d8ecaa199d25 (patch)
tree44f4d9d04fd04ccee9877e28d8fff5e472bba7d2 /fs/jffs2/os-linux.h
parent23b1a99b87f3fc9e4242b98b2af3c9bed210f048 (diff)
downloadlinux-92abc475d8de1c29373f6d96ed63d8ecaa199d25.tar.xz
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 <dilinger@queued.net> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
Diffstat (limited to 'fs/jffs2/os-linux.h')
-rw-r--r--fs/jffs2/os-linux.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/jffs2/os-linux.h b/fs/jffs2/os-linux.h
index 6c1755c59c0f..ab65ee3ec858 100644
--- a/fs/jffs2/os-linux.h
+++ b/fs/jffs2/os-linux.h
@@ -176,7 +176,7 @@ void jffs2_dirty_inode(struct inode *inode, int flags);
struct inode *jffs2_new_inode (struct inode *dir_i, umode_t mode,
struct jffs2_raw_inode *ri);
int jffs2_statfs (struct dentry *, struct kstatfs *);
-int jffs2_remount_fs (struct super_block *, int *, char *);
+int jffs2_do_remount_fs(struct super_block *, int *, char *);
int jffs2_do_fill_super(struct super_block *sb, void *data, int silent);
void jffs2_gc_release_inode(struct jffs2_sb_info *c,
struct jffs2_inode_info *f);