From: Ye Bin <yebin10@huawei.com>
To: <tytso@mit.edu>, <adilger.kernel@dilger.ca>,
<linux-ext4@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>, <jack@suse.cz>,
Ye Bin <yebin10@huawei.com>
Subject: [PATCH -next] ext4: Fix remount with 'abort' option isn't effective
Date: Tue, 21 Dec 2021 20:32:14 +0800 [thread overview]
Message-ID: <20211221123214.2410593-1-yebin10@huawei.com> (raw)
We test remount with 'abort' option as follows:
[root@localhost home]# mount /dev/sda test
[root@localhost home]# mount | grep test
/dev/sda on /home/test type ext4 (rw,relatime)
[root@localhost home]# mount -o remount,abort test
[root@localhost home]# mount | grep test
/dev/sda on /home/test type ext4 (rw,relatime)
Obviously, remount 'abort' option isn't effective.
After 6e47a3cc68fc commit we process abort option with 'ctx_set_mount_flags':
static inline void ctx_set_mount_flags(struct ext4_fs_context *ctx, int flag)
{
ctx->mask_s_mount_flags |= flag;
ctx->vals_s_mount_flags |= flag;
}
But we test 'abort' option with 'ext4_test_mount_flag':
static inline int ext4_test_mount_flag(struct super_block *sb, int bit)
{
return test_bit(bit, &EXT4_SB(sb)->s_mount_flags);
}
To solve this issue, pass (1 << EXT4_MF_FS_ABORTED) to 'ctx_set_mount_flags'.
Fixes:6e47a3cc68fc("ext4: get rid of super block and sbi from handle_mount_ops()")
Signed-off-by: Ye Bin <yebin10@huawei.com>
---
fs/ext4/super.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index b72d989b77fb..071b7b3c5678 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -2236,7 +2236,7 @@ static int ext4_parse_param(struct fs_context *fc, struct fs_parameter *param)
param->key);
return 0;
case Opt_abort:
- ctx_set_mount_flags(ctx, EXT4_MF_FS_ABORTED);
+ ctx_set_mount_flags(ctx, 1 << EXT4_MF_FS_ABORTED);
return 0;
case Opt_i_version:
ctx_set_flags(ctx, SB_I_VERSION);
--
2.31.1
next reply other threads:[~2021-12-21 12:20 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-21 12:32 Ye Bin [this message]
2021-12-21 14:43 ` [PATCH -next] ext4: Fix remount with 'abort' option isn't effective Lukas Czerner
2021-12-22 1:06 ` yebin
2021-12-22 9:19 ` Lukas Czerner
2021-12-23 1:41 ` yebin
2021-12-23 15:41 ` Theodore Ts'o
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