From dbb59808e7fca1d4c794a3bfeea7f2046fc25f12 Mon Sep 17 00:00:00 2001 From: Mark Fasheh Date: Mon, 31 Jan 2011 11:31:04 -0800 Subject: [PATCH] ocfs2: Check heartbeat mode for kernel stacks only commit 52c303c56c3638944b5f733e3961dc58eb8c7270 upstream. Commit 2c442719e90a44a6982c033d69df4aae4b167cfa added some checks for proper heartbeat mode when the o2cb stack is running. Unfortunately, it didn't take into account that a userpsace stack could be running. Fix this by only doing the check if o2cb is in use. This patch allows userspace stacks to mount the fs again. Signed-off-by: Mark Fasheh Signed-off-by: Joel Becker Signed-off-by: Greg Kroah-Hartman --- fs/ocfs2/super.c | 28 ++++++++++++++++++++-------- 1 file changed, 20 insertions(+), 8 deletions(-) diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c index cfeab7ce369..02e3cd0ac1e 100644 --- a/fs/ocfs2/super.c +++ b/fs/ocfs2/super.c @@ -1310,7 +1310,7 @@ static int ocfs2_parse_options(struct super_block *sb, struct mount_options *mopt, int is_remount) { - int status; + int status, user_stack = 0; char *p; u32 tmp; @@ -1453,6 +1453,15 @@ static int ocfs2_parse_options(struct super_block *sb, memcpy(mopt->cluster_stack, args[0].from, OCFS2_STACK_LABEL_LEN); mopt->cluster_stack[OCFS2_STACK_LABEL_LEN] = '\0'; + /* + * Open code the memcmp here as we don't have + * an osb to pass to + * ocfs2_userspace_stack(). + */ + if (memcmp(mopt->cluster_stack, + OCFS2_CLASSIC_CLUSTER_STACK, + OCFS2_STACK_LABEL_LEN)) + user_stack = 1; break; case Opt_inode64: mopt->mount_opt |= OCFS2_MOUNT_INODE64; @@ -1508,13 +1517,16 @@ static int ocfs2_parse_options(struct super_block *sb, } } - /* Ensure only one heartbeat mode */ - tmp = mopt->mount_opt & (OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL | - OCFS2_MOUNT_HB_NONE); - if (hweight32(tmp) != 1) { - mlog(ML_ERROR, "Invalid heartbeat mount options\n"); - status = 0; - goto bail; + if (user_stack == 0) { + /* Ensure only one heartbeat mode */ + tmp = mopt->mount_opt & (OCFS2_MOUNT_HB_LOCAL | + OCFS2_MOUNT_HB_GLOBAL | + OCFS2_MOUNT_HB_NONE); + if (hweight32(tmp) != 1) { + mlog(ML_ERROR, "Invalid heartbeat mount options\n"); + status = 0; + goto bail; + } } status = 1; -- 2.11.4.GIT