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path: root/fs/ext4/super.c
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Diffstat (limited to 'fs/ext4/super.c')
-rw-r--r--fs/ext4/super.c80
1 files changed, 58 insertions, 22 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 52dd0679a4e2..09d9359c8055 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -979,7 +979,7 @@ static int parse_options (char *options, struct super_block *sb,
int data_opt = 0;
int option;
#ifdef CONFIG_QUOTA
- int qtype;
+ int qtype, qfmt;
char *qname;
#endif
@@ -1162,9 +1162,11 @@ static int parse_options (char *options, struct super_block *sb,
case Opt_grpjquota:
qtype = GRPQUOTA;
set_qf_name:
- if (sb_any_quota_enabled(sb)) {
+ if ((sb_any_quota_enabled(sb) ||
+ sb_any_quota_suspended(sb)) &&
+ !sbi->s_qf_names[qtype]) {
printk(KERN_ERR
- "EXT4-fs: Cannot change journalled "
+ "EXT4-fs: Cannot change journaled "
"quota options when quota turned on.\n");
return 0;
}
@@ -1200,9 +1202,11 @@ set_qf_name:
case Opt_offgrpjquota:
qtype = GRPQUOTA;
clear_qf_name:
- if (sb_any_quota_enabled(sb)) {
+ if ((sb_any_quota_enabled(sb) ||
+ sb_any_quota_suspended(sb)) &&
+ sbi->s_qf_names[qtype]) {
printk(KERN_ERR "EXT4-fs: Cannot change "
- "journalled quota options when "
+ "journaled quota options when "
"quota turned on.\n");
return 0;
}
@@ -1213,10 +1217,20 @@ clear_qf_name:
sbi->s_qf_names[qtype] = NULL;
break;
case Opt_jqfmt_vfsold:
- sbi->s_jquota_fmt = QFMT_VFS_OLD;
- break;
+ qfmt = QFMT_VFS_OLD;
+ goto set_qf_format;
case Opt_jqfmt_vfsv0:
- sbi->s_jquota_fmt = QFMT_VFS_V0;
+ qfmt = QFMT_VFS_V0;
+set_qf_format:
+ if ((sb_any_quota_enabled(sb) ||
+ sb_any_quota_suspended(sb)) &&
+ sbi->s_jquota_fmt != qfmt) {
+ printk(KERN_ERR "EXT4-fs: Cannot change "
+ "journaled quota options when "
+ "quota turned on.\n");
+ return 0;
+ }
+ sbi->s_jquota_fmt = qfmt;
break;
case Opt_quota:
case Opt_usrquota:
@@ -1241,6 +1255,9 @@ clear_qf_name:
case Opt_quota:
case Opt_usrquota:
case Opt_grpquota:
+ printk(KERN_ERR
+ "EXT4-fs: quota options not supported.\n");
+ break;
case Opt_usrjquota:
case Opt_grpjquota:
case Opt_offusrjquota:
@@ -1248,7 +1265,7 @@ clear_qf_name:
case Opt_jqfmt_vfsold:
case Opt_jqfmt_vfsv0:
printk(KERN_ERR
- "EXT4-fs: journalled quota options not "
+ "EXT4-fs: journaled quota options not "
"supported.\n");
break;
case Opt_noquota:
@@ -1333,14 +1350,14 @@ clear_qf_name:
}
if (!sbi->s_jquota_fmt) {
- printk(KERN_ERR "EXT4-fs: journalled quota format "
+ printk(KERN_ERR "EXT4-fs: journaled quota format "
"not specified.\n");
return 0;
}
} else {
if (sbi->s_jquota_fmt) {
- printk(KERN_ERR "EXT4-fs: journalled quota format "
- "specified with no journalling "
+ printk(KERN_ERR "EXT4-fs: journaled quota format "
+ "specified with no journaling "
"enabled.\n");
return 0;
}
@@ -1581,7 +1598,7 @@ static void ext4_orphan_cleanup (struct super_block * sb,
int ret = ext4_quota_on_mount(sb, i);
if (ret < 0)
printk(KERN_ERR
- "EXT4-fs: Cannot turn on journalled "
+ "EXT4-fs: Cannot turn on journaled "
"quota: error %d\n", ret);
}
}
@@ -3106,7 +3123,7 @@ static int ext4_release_dquot(struct dquot *dquot)
static int ext4_mark_dquot_dirty(struct dquot *dquot)
{
- /* Are we journalling quotas? */
+ /* Are we journaling quotas? */
if (EXT4_SB(dquot->dq_sb)->s_qf_names[USRQUOTA] ||
EXT4_SB(dquot->dq_sb)->s_qf_names[GRPQUOTA]) {
dquot_mark_dquot_dirty(dquot);
@@ -3153,23 +3170,42 @@ static int ext4_quota_on(struct super_block *sb, int type, int format_id,
if (!test_opt(sb, QUOTA))
return -EINVAL;
- /* Not journalling quota? */
- if ((!EXT4_SB(sb)->s_qf_names[USRQUOTA] &&
- !EXT4_SB(sb)->s_qf_names[GRPQUOTA]) || remount)
+ /* When remounting, no checks are needed and in fact, path is NULL */
+ if (remount)
return vfs_quota_on(sb, type, format_id, path, remount);
+
err = path_lookup(path, LOOKUP_FOLLOW, &nd);
if (err)
return err;
+
/* Quotafile not on the same filesystem? */
if (nd.path.mnt->mnt_sb != sb) {
path_put(&nd.path);
return -EXDEV;
}
- /* Quotafile not of fs root? */
- if (nd.path.dentry->d_parent->d_inode != sb->s_root->d_inode)
- printk(KERN_WARNING
- "EXT4-fs: Quota file not on filesystem root. "
- "Journalled quota will not work.\n");
+ /* Journaling quota? */
+ if (EXT4_SB(sb)->s_qf_names[type]) {
+ /* Quotafile not of fs root? */
+ if (nd.path.dentry->d_parent->d_inode != sb->s_root->d_inode)
+ printk(KERN_WARNING
+ "EXT4-fs: Quota file not on filesystem root. "
+ "Journaled quota will not work.\n");
+ }
+
+ /*
+ * When we journal data on quota file, we have to flush journal to see
+ * all updates to the file when we bypass pagecache...
+ */
+ if (ext4_should_journal_data(nd.path.dentry->d_inode)) {
+ /*
+ * We don't need to lock updates but journal_flush() could
+ * otherwise be livelocked...
+ */
+ jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal);
+ jbd2_journal_flush(EXT4_SB(sb)->s_journal);
+ jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal);
+ }
+
path_put(&nd.path);
return vfs_quota_on(sb, type, format_id, path, remount);
}