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ext4: don't save the error information if the block device is read-only

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Google-Bug-Id: 20939131
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Theodore Ts'o 2015-05-14 18:37:30 -04:00
parent 8f4d855839
commit 1b46617b8d
1 changed files with 2 additions and 0 deletions
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2
fs/ext4/super.c
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@ -294,6 +294,8 @@ static void __save_error_info(struct super_block *sb, const char *func,
struct ext4_super_block *es = EXT4_SB(sb)->s_es;
EXT4_SB(sb)->s_mount_state |= EXT4_ERROR_FS;
if (bdev_read_only(sb->s_bdev))
return;
es->s_state |= cpu_to_le16(EXT4_ERROR_FS);
es->s_last_error_time = cpu_to_le32(get_seconds());
strncpy(es->s_last_error_func, func, sizeof(es->s_last_error_func));