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