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Commit 2d834bf9 authored by Jaegeuk Kim's avatar Jaegeuk Kim
Browse files

f2fs: support norecovery mount option 



This patch adds a mount option, norecovery, which is mostly same as
disable_roll_forward. The only difference is that norecovery should be activated
with read-only mount option.

This can be used when user wants to check whether f2fs is mountable or not
without any recovery process. (e.g., xfstests/200)

Reviewed-by: default avatarChao Yu <chao2.yu@samsung.com>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent dabc4a5c

Documentation/filesystems/f2fs.txt

+2 −0
Original line number Diff line number Diff line
@@ -106,6 +106,8 @@ background_gc=%s Turn on/off cleaning operations, namely garbage 
                       Default value for this option is on. So garbage

                       collection is on by default.

disable_roll_forward   Disable the roll-forward recovery routine

norecovery             Disable the roll-forward recovery routine, mounted read-

                       only (i.e., -o ro,disable_roll_forward)

discard                Issue discard/TRIM commands when a segment is cleaned.

no_heap                Disable heap-style segment allocation which finds free

                       segments for data from the beginning of main area, while

fs/f2fs/super.c

+8 −0
Original line number Diff line number Diff line
@@ -42,6 +42,7 @@ static struct kset *f2fs_kset; 
enum {

	Opt_gc_background,

	Opt_disable_roll_forward,

	Opt_norecovery,

	Opt_discard,

	Opt_noheap,

	Opt_user_xattr,
@@ -62,6 +63,7 @@ enum { 
static match_table_t f2fs_tokens = {

	{Opt_gc_background, "background_gc=%s"},

	{Opt_disable_roll_forward, "disable_roll_forward"},

	{Opt_norecovery, "norecovery"},

	{Opt_discard, "discard"},

	{Opt_noheap, "no_heap"},

	{Opt_user_xattr, "user_xattr"},
@@ -287,6 +289,12 @@ static int parse_options(struct super_block *sb, char *options) 
		case Opt_disable_roll_forward:

			set_opt(sbi, DISABLE_ROLL_FORWARD);

			break;

		case Opt_norecovery:

			/* this option mounts f2fs with ro */

			set_opt(sbi, DISABLE_ROLL_FORWARD);

			if (!f2fs_readonly(sb))

				return -EINVAL;

			break;

		case Opt_discard:

			set_opt(sbi, DISCARD);

			break;