kill d_validate() (d6cb125b) · Commits · e / devices / android_kernel_oneplus_sm7250

fs/dcache.c

+0 −31

Original line number	Diff line number	Diff line
		@@ -2187,37 +2187,6 @@ struct dentry d_hash_and_lookup(struct dentry dir, struct qstr *name)
		}
		EXPORT_SYMBOL(d_hash_and_lookup);

		/**
		* d_validate - verify dentry provided from insecure source (deprecated)
		* @dentry: The dentry alleged to be valid child of @dparent
		* @dparent: The parent dentry (known to be valid)
		*
		* An insecure source has sent us a dentry, here we verify it and dget() it.
		* This is used by ncpfs in its readdir implementation.
		* Zero is returned in the dentry is invalid.
		*
		* This function is slow for big directories, and deprecated, do not use it.
		*/
		int d_validate(struct dentry dentry, struct dentry dparent)
		{
		struct dentry *child;

		spin_lock(&dparent->d_lock);
		list_for_each_entry(child, &dparent->d_subdirs, d_child) {
		if (dentry == child) {
		spin_lock_nested(&dentry->d_lock, DENTRY_D_LOCK_NESTED);
		__dget_dlock(dentry);
		spin_unlock(&dentry->d_lock);
		spin_unlock(&dparent->d_lock);
		return 1;
		}
		}
		spin_unlock(&dparent->d_lock);

		return 0;
		}
		EXPORT_SYMBOL(d_validate);

		/*
		* When a file is deleted, we have two options:
		* - turn this dentry into a negative dentry

+0 −3

Original line number	Diff line number	Diff line
		@@ -319,9 +319,6 @@ static inline unsigned d_count(const struct dentry *dentry)
		return dentry->d_lockref.count;
		}

		/* validate "insecure" dentry pointer */
		extern int d_validate(struct dentry , struct dentry );

		/*
		* helper function for dentry_operations.d_dname() members
		*/