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From ea75f7357e3a881bd1bd0db5e483fc6a8681567b Mon Sep 17 00:00:00 2001
From: Josh Boyer <jwboyer@redhat.com>
Date: Tue, 10 Jan 2012 09:39:02 -0500
Subject: [PATCH] ext4: Support "check=none" "nocheck" mount options
The ext2/ext3 filesystems supported "check=none" and "nocheck" as mount options
even though that was already the default behavior and it essentially did
nothing. When using ext4 to mount ext2/ext3 filesystems, that mount option
causes the mount to fail. That isn't as backward compatible as it could be,
so add support to ext4 to accept the option.
Signed-off-by: Josh Boyer <jwboyer@redhat.com>
---
fs/ext4/super.c | 7 ++++++-
1 files changed, 6 insertions(+), 1 deletions(-)
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 3e1329e..5ff09e7 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -1333,7 +1333,7 @@ enum {
Opt_nomblk_io_submit, Opt_block_validity, Opt_noblock_validity,
Opt_inode_readahead_blks, Opt_journal_ioprio,
Opt_dioread_nolock, Opt_dioread_lock,
- Opt_discard, Opt_nodiscard, Opt_init_itable, Opt_noinit_itable,
+ Opt_discard, Opt_nodiscard, Opt_init_itable, Opt_noinit_itable, Opt_nocheck,
};
static const match_table_t tokens = {
@@ -1409,6 +1409,8 @@ static const match_table_t tokens = {
{Opt_init_itable, "init_itable=%u"},
{Opt_init_itable, "init_itable"},
{Opt_noinit_itable, "noinit_itable"},
+ {Opt_nocheck, "check=none"},
+ {Opt_nocheck, "nocheck"},
{Opt_err, NULL},
};
@@ -1905,6 +1907,9 @@ set_qf_format:
case Opt_noinit_itable:
clear_opt(sb, INIT_INODE_TABLE);
break;
+ case Opt_nocheck:
+ /* ext2/ext3 used to "support" this option. Silently eat it */
+ break;
default:
ext4_msg(sb, KERN_ERR,
"Unrecognized mount option \"%s\" "
--
1.7.7.5
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