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authorJan Kara <jack@suse.cz>2014-10-08 18:26:54 +0200
committerJan Kara <jack@suse.cz>2015-01-30 12:50:42 +0100
commit1fa5efe3622db58cb8c7b9a50665e9eb9a6c7e97 (patch)
tree0179b1ce0beb1f34ecabcd028c810e9dba2b4cd5
parent3e2af67e66ff025796af1a8a1fcbb4236304f90c (diff)
ext4: Use generic helpers for quotaon and quotaoff
Ext4 can just use the generic helpers provided by quota code for turning quotas on and off when quota files are stored as system inodes. The only difference is the feature test in ext4_quota_on_sysfile() but the same is achieved in dquot_quota_enable() by checking whether usage tracking for the corresponding quota type is enabled (which can happen only if quota feature is set). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jan Kara <jack@suse.cz>
-rw-r--r--fs/ext4/super.c42
1 files changed, 1 insertions, 41 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 74c5f53595fb..ac64edbe501d 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -1046,10 +1046,7 @@ static int ext4_mark_dquot_dirty(struct dquot *dquot);
static int ext4_write_info(struct super_block *sb, int type);
static int ext4_quota_on(struct super_block *sb, int type, int format_id,
struct path *path);
-static int ext4_quota_on_sysfile(struct super_block *sb, int type,
- int format_id);
static int ext4_quota_off(struct super_block *sb, int type);
-static int ext4_quota_off_sysfile(struct super_block *sb, int type);
static int ext4_quota_on_mount(struct super_block *sb, int type);
static ssize_t ext4_quota_read(struct super_block *sb, int type, char *data,
size_t len, loff_t off);
@@ -1084,16 +1081,6 @@ static const struct quotactl_ops ext4_qctl_operations = {
.get_dqblk = dquot_get_dqblk,
.set_dqblk = dquot_set_dqblk
};
-
-static const struct quotactl_ops ext4_qctl_sysfile_operations = {
- .quota_on_meta = ext4_quota_on_sysfile,
- .quota_off = ext4_quota_off_sysfile,
- .quota_sync = dquot_quota_sync,
- .get_info = dquot_get_dqinfo,
- .set_info = dquot_set_dqinfo,
- .get_dqblk = dquot_get_dqblk,
- .set_dqblk = dquot_set_dqblk
-};
#endif
static const struct super_operations ext4_sops = {
@@ -3935,7 +3922,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
#ifdef CONFIG_QUOTA
sb->dq_op = &ext4_quota_operations;
if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_QUOTA))
- sb->s_qcop = &ext4_qctl_sysfile_operations;
+ sb->s_qcop = &dquot_quotactl_sysfile_ops;
else
sb->s_qcop = &ext4_qctl_operations;
sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP;
@@ -5288,21 +5275,6 @@ static int ext4_enable_quotas(struct super_block *sb)
return 0;
}
-/*
- * quota_on function that is used when QUOTA feature is set.
- */
-static int ext4_quota_on_sysfile(struct super_block *sb, int type,
- int format_id)
-{
- if (!EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_QUOTA))
- return -EINVAL;
-
- /*
- * USAGE was enabled at mount time. Only need to enable LIMITS now.
- */
- return ext4_quota_enable(sb, type, format_id, DQUOT_LIMITS_ENABLED);
-}
-
static int ext4_quota_off(struct super_block *sb, int type)
{
struct inode *inode = sb_dqopt(sb)->files[type];
@@ -5329,18 +5301,6 @@ out:
return dquot_quota_off(sb, type);
}
-/*
- * quota_off function that is used when QUOTA feature is set.
- */
-static int ext4_quota_off_sysfile(struct super_block *sb, int type)
-{
- if (!EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_QUOTA))
- return -EINVAL;
-
- /* Disable only the limits. */
- return dquot_disable(sb, type, DQUOT_LIMITS_ENABLED);
-}
-
/* Read data from quotafile - avoid pagecache and such because we cannot afford
* acquiring the locks... As quota files are never truncated and quota code
* itself serializes the operations (and no one else should touch the files)