net: rtnetlink: validate IFLA_MTU attribute in rtnl_create_link()

[mirror_ubuntu-bionic-kernel.git] / include / linux / quotaops.h

diff --git a/include/linux/quotaops.h b/include/linux/quotaops.h
index 2fb6fb11132efb1a967796cfed3e633c73ccd587..50ab5d6ccc4edaf5e3f152046752f2f9f317010e 100644 (file)
--- a/include/linux/quotaops.h
+++ b/include/linux/quotaops.h
@@ -22,7 +22,7 @@ static inline struct quota_info *sb_dqopt(struct super_block *sb)
 /* i_mutex must being held */
 static inline bool is_quota_modification(struct inode *inode, struct iattr *ia)
 {
-       return (ia->ia_valid & ATTR_SIZE && ia->ia_size != inode->i_size) ||
+       return (ia->ia_valid & ATTR_SIZE) ||
                (ia->ia_valid & ATTR_UID && !uid_eq(ia->ia_uid, inode->i_uid)) ||
                (ia->ia_valid & ATTR_GID && !gid_eq(ia->ia_gid, inode->i_gid));
 }
@@ -51,6 +51,16 @@ static inline struct dquot *dqgrab(struct dquot *dquot)
        atomic_inc(&dquot->dq_count);
        return dquot;
 }
+
+static inline bool dquot_is_busy(struct dquot *dquot)
+{
+       if (test_bit(DQ_MOD_B, &dquot->dq_flags))
+               return true;
+       if (atomic_read(&dquot->dq_count) > 1)
+               return true;
+       return false;
+}
+
 void dqput(struct dquot *dquot);
 int dquot_scan_active(struct super_block *sb,
                      int (*fn)(struct dquot *dquot, unsigned long priv),