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authorJan Kara <jack@suse.cz>2017-04-06 17:02:09 +0200
committerJan Kara <jack@suse.cz>2017-04-19 14:21:23 +0200
commit161f3b74479b1e486fc784111491023a5bc57bf7 (patch)
tree1c35dd6e5fc58f9d4feb0b4338e2ac56da685ca9 /fs
parent33eb928a9e21fb32221db4290d579753ecf2b80e (diff)
downloadlinux-161f3b74479b1e486fc784111491023a5bc57bf7.tar.bz2
ext2: Set flags on quota files directly
Currently immutable and noatime flags on quota files are set by quota code which requires us to copy inode->i_flags to our on disk version of quota flags in GETFLAGS ioctl and __ext2_write_inode(). Move to setting / clearing these on-disk flags directly to save that copying. Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs')
-rw-r--r--fs/ext2/super.c78
1 files changed, 76 insertions, 2 deletions
diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index b3090416a936..8ac673c71a36 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -122,13 +122,29 @@ void ext2_update_dynamic_rev(struct super_block *sb)
*/
}
+#ifdef CONFIG_QUOTA
+static int ext2_quota_off(struct super_block *sb, int type);
+
+static void ext2_quota_off_umount(struct super_block *sb)
+{
+ int type;
+
+ for (type = 0; type < MAXQUOTAS; type++)
+ ext2_quota_off(sb, type);
+}
+#else
+static inline void ext2_quota_off_umount(struct super_block *sb)
+{
+}
+#endif
+
static void ext2_put_super (struct super_block * sb)
{
int db_count;
int i;
struct ext2_sb_info *sbi = EXT2_SB(sb);
- dquot_disable(sb, -1, DQUOT_USAGE_ENABLED | DQUOT_LIMITS_ENABLED);
+ ext2_quota_off_umount(sb);
if (sbi->s_mb_cache) {
ext2_xattr_destroy_cache(sbi->s_mb_cache);
@@ -313,10 +329,23 @@ static int ext2_show_options(struct seq_file *seq, struct dentry *root)
#ifdef CONFIG_QUOTA
static ssize_t ext2_quota_read(struct super_block *sb, int type, char *data, size_t len, loff_t off);
static ssize_t ext2_quota_write(struct super_block *sb, int type, const char *data, size_t len, loff_t off);
+static int ext2_quota_on(struct super_block *sb, int type, int format_id,
+ const struct path *path);
static struct dquot **ext2_get_dquots(struct inode *inode)
{
return EXT2_I(inode)->i_dquot;
}
+
+static const struct quotactl_ops ext2_quotactl_ops = {
+ .quota_on = ext2_quota_on,
+ .quota_off = ext2_quota_off,
+ .quota_sync = dquot_quota_sync,
+ .get_state = dquot_get_state,
+ .set_info = dquot_set_dqinfo,
+ .get_dqblk = dquot_get_dqblk,
+ .set_dqblk = dquot_set_dqblk,
+ .get_nextdqblk = dquot_get_next_dqblk,
+};
#endif
static const struct super_operations ext2_sops = {
@@ -1116,7 +1145,7 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
#ifdef CONFIG_QUOTA
sb->dq_op = &dquot_operations;
- sb->s_qcop = &dquot_quotactl_ops;
+ sb->s_qcop = &ext2_quotactl_ops;
sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP;
#endif
@@ -1547,6 +1576,51 @@ out:
return len - towrite;
}
+static int ext2_quota_on(struct super_block *sb, int type, int format_id,
+ const struct path *path)
+{
+ int err;
+ struct inode *inode;
+
+ err = dquot_quota_on(sb, type, format_id, path);
+ if (err)
+ return err;
+
+ inode = d_inode(path->dentry);
+ inode_lock(inode);
+ EXT2_I(inode)->i_flags |= EXT2_NOATIME_FL | EXT2_IMMUTABLE_FL;
+ inode_set_flags(inode, S_NOATIME | S_IMMUTABLE,
+ S_NOATIME | S_IMMUTABLE);
+ inode_unlock(inode);
+ mark_inode_dirty(inode);
+
+ return 0;
+}
+
+static int ext2_quota_off(struct super_block *sb, int type)
+{
+ struct inode *inode = sb_dqopt(sb)->files[type];
+ int err;
+
+ if (!inode || !igrab(inode))
+ goto out;
+
+ err = dquot_quota_off(sb, type);
+ if (err)
+ goto out_put;
+
+ inode_lock(inode);
+ EXT2_I(inode)->i_flags &= ~(EXT2_NOATIME_FL | EXT2_IMMUTABLE_FL);
+ inode_set_flags(inode, 0, S_NOATIME | S_IMMUTABLE);
+ inode_unlock(inode);
+ mark_inode_dirty(inode);
+out_put:
+ iput(inode);
+ return err;
+out:
+ return dquot_quota_off(sb, type);
+}
+
#endif
static struct file_system_type ext2_fs_type = {