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vfs: ignore error on forced remount

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On emergency remount we want to force MS_RDONLY on the super block
even if ->remount_fs() failed for some reason.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Tested-by: Toshiyuki Okajima <toshi.okajima@jp.fujitsu.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Miklos Szeredi 2011-10-28 14:13:20 +02:00 committed by Christoph Hellwig
parent 1fa1e7f615
commit 2833eb2b46
1 changed files with 7 additions and 2 deletions
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9
fs/super.c
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@ -727,8 +727,13 @@ int do_remount_sb(struct super_block *sb, int flags, void *data, int force)
if (sb->s_op->remount_fs) {
retval = sb->s_op->remount_fs(sb, &flags, data);
if (retval)
return retval;
if (retval) {
if (!force)
return retval;
/* If forced remount, go ahead despite any errors */
WARN(1, "forced remount of a %s fs returned %i\n",
sb->s_type->name, retval);
}
}
sb->s_flags = (sb->s_flags & ~MS_RMT_MASK) | (flags & MS_RMT_MASK);