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Date: Wed, 02 Nov 2011 11:36:58 -0500
From: Eric Sandeen <sandeen@...hat.com>
To: ext4 development <linux-ext4@...r.kernel.org>
Subject: [PATCH 2/2 V2] ext4: remove the resize mount option
The resize mount option seems to be of limited value,
especially in the age of online resize2fs. Nuke it.
Signed-off-by: Eric Sandeen <sandeen@...hat.com>
---
V2: get the subject right.
Documentation/filesystems/ext4.txt | 5 -----
fs/ext4/super.c | 29 ++++++-----------------------
2 files changed, 6 insertions(+), 28 deletions(-)
diff --git a/Documentation/filesystems/ext4.txt b/Documentation/filesystems/ext4.txt
index f19cecc..4ea728a 100644
--- a/Documentation/filesystems/ext4.txt
+++ b/Documentation/filesystems/ext4.txt
@@ -362,11 +362,6 @@ nouid32 Disables 32-bit UIDs and GIDs. This is for
interoperability with older kernels which only
store and expect 16-bit values.
-resize Allows to resize filesystem to the end of the last
- existing block group, further resize has to be done
- with resize2fs either online, or offline. It can be
- used only with conjunction with remount.
-
block_validity This options allows to enables/disables the in-kernel
noblock_validity facility for tracking filesystem metadata blocks
within internal data structures. This allows multi-
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 6a5faac..0f11e99 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -1312,7 +1312,7 @@ enum {
Opt_usrjquota, Opt_grpjquota, Opt_offusrjquota, Opt_offgrpjquota,
Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_jqfmt_vfsv1, Opt_quota,
Opt_noquota, Opt_ignore, Opt_barrier, Opt_nobarrier, Opt_err,
- Opt_resize, Opt_usrquota, Opt_grpquota, Opt_i_version,
+ Opt_usrquota, Opt_grpquota, Opt_i_version,
Opt_stripe, Opt_delalloc, Opt_nodelalloc, Opt_mblk_io_submit,
Opt_nomblk_io_submit, Opt_block_validity, Opt_noblock_validity,
Opt_inode_readahead_blks, Opt_journal_ioprio,
@@ -1374,7 +1374,6 @@ static const match_table_t tokens = {
{Opt_nobarrier, "nobarrier"},
{Opt_i_version, "i_version"},
{Opt_stripe, "stripe=%u"},
- {Opt_resize, "resize"},
{Opt_delalloc, "delalloc"},
{Opt_nodelalloc, "nodelalloc"},
{Opt_mblk_io_submit, "mblk_io_submit"},
@@ -1484,7 +1483,7 @@ static int clear_qf_name(struct super_block *sb, int qtype)
static int parse_options(char *options, struct super_block *sb,
unsigned long *journal_devnum,
unsigned int *journal_ioprio,
- ext4_fsblk_t *n_blocks_count, int is_remount)
+ int is_remount)
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
char *p;
@@ -1761,17 +1760,6 @@ set_qf_format:
break;
case Opt_ignore:
break;
- case Opt_resize:
- if (!is_remount) {
- ext4_msg(sb, KERN_ERR,
- "resize option only available "
- "for remount");
- return 0;
- }
- if (match_int(&args[0], &option) != 0)
- return 0;
- *n_blocks_count = option;
- break;
case Opt_nobh:
ext4_msg(sb, KERN_WARNING,
"Ignoring deprecated nobh option");
@@ -3200,13 +3188,13 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
sbi->s_li_wait_mult = EXT4_DEF_LI_WAIT_MULT;
if (!parse_options((char *) sbi->s_es->s_mount_opts, sb,
- &journal_devnum, &journal_ioprio, NULL, 0)) {
+ &journal_devnum, &journal_ioprio, 0)) {
ext4_msg(sb, KERN_WARNING,
"failed to parse options in superblock: %s",
sbi->s_es->s_mount_opts);
}
if (!parse_options((char *) data, sb, &journal_devnum,
- &journal_ioprio, NULL, 0))
+ &journal_ioprio, 0))
goto failed_mount;
sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
@@ -4285,7 +4273,6 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
{
struct ext4_super_block *es;
struct ext4_sb_info *sbi = EXT4_SB(sb);
- ext4_fsblk_t n_blocks_count = 0;
unsigned long old_sb_flags;
struct ext4_mount_options old_opts;
int enable_quota = 0;
@@ -4318,8 +4305,7 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
/*
* Allow the "check" option to be passed as a remount option.
*/
- if (!parse_options(data, sb, NULL, &journal_ioprio,
- &n_blocks_count, 1)) {
+ if (!parse_options(data, sb, NULL, &journal_ioprio, 1)) {
err = -EINVAL;
goto restore_opts;
}
@@ -4337,8 +4323,7 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
set_task_ioprio(sbi->s_journal->j_task, journal_ioprio);
}
- if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY) ||
- n_blocks_count > ext4_blocks_count(es)) {
+ if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
if (sbi->s_mount_flags & EXT4_MF_FS_ABORTED) {
err = -EROFS;
goto restore_opts;
@@ -4413,8 +4398,6 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
if (sbi->s_journal)
ext4_clear_journal_err(sb, es);
sbi->s_mount_state = le16_to_cpu(es->s_state);
- if ((err = ext4_group_extend(sb, es, n_blocks_count)))
- goto restore_opts;
if (!ext4_setup_super(sb, es, 0))
sb->s_flags &= ~MS_RDONLY;
if (EXT4_HAS_INCOMPAT_FEATURE(sb,
--
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