Commit bb4f397a authored by Aneesh Kumar K.V's avatar Aneesh Kumar K.V Committed by Theodore Ts'o
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ext4: Change the default behaviour on error 



ext4 file system was by default ignoring errors and continuing. This
is not a good default as continuing on error could lead to file system
corruption. Change the default to mark the file system
readonly. Debian and ubuntu already does this as the default in their
fstab.

Signed-off-by: default avatarAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Acked-by: default avatarEric Sandeen <sandeen@redhat.com>
Signed-off-by: default avatarMingming Cao <cmm@us.ibm.com>
parent e7c95593

fs/ext4/super.c

+8 −8
Original line number Diff line number Diff line
@@ -688,16 +688,16 @@ static int ext4_show_options(struct seq_file *seq, struct vfsmount *vfs) 
	    le16_to_cpu(es->s_def_resgid) != EXT4_DEF_RESGID) {

		seq_printf(seq, ",resgid=%u", sbi->s_resgid);

	}

	if (test_opt(sb, ERRORS_CONT)) {

	if (test_opt(sb, ERRORS_RO)) {

		int def_errors = le16_to_cpu(es->s_errors);



		if (def_errors == EXT4_ERRORS_PANIC ||

		    def_errors == EXT4_ERRORS_RO) {

			seq_puts(seq, ",errors=continue");

		    def_errors == EXT4_ERRORS_CONTINUE) {

			seq_puts(seq, ",errors=remount-ro");

		}

	}

	if (test_opt(sb, ERRORS_RO))

		seq_puts(seq, ",errors=remount-ro");

	if (test_opt(sb, ERRORS_CONT))

		seq_puts(seq, ",errors=continue");

	if (test_opt(sb, ERRORS_PANIC))

		seq_puts(seq, ",errors=panic");

	if (test_opt(sb, NO_UID32))
@@ -1819,10 +1819,10 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent) 


	if (le16_to_cpu(sbi->s_es->s_errors) == EXT4_ERRORS_PANIC)

		set_opt(sbi->s_mount_opt, ERRORS_PANIC);

	else if (le16_to_cpu(sbi->s_es->s_errors) == EXT4_ERRORS_RO)

		set_opt(sbi->s_mount_opt, ERRORS_RO);

	else

	else if (le16_to_cpu(sbi->s_es->s_errors) == EXT4_ERRORS_CONTINUE)

		set_opt(sbi->s_mount_opt, ERRORS_CONT);

	else

		set_opt(sbi->s_mount_opt, ERRORS_RO);



	sbi->s_resuid = le16_to_cpu(es->s_def_resuid);

	sbi->s_resgid = le16_to_cpu(es->s_def_resgid);

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