NFS: Add a helper to set attribute barriers (140e049c) · Commits · e / devices / android_kernel_teracube_2e

fs/nfs/inode.c

+16 −0

Original line number	Diff line number	Diff line
		@@ -1260,6 +1260,22 @@ void nfs_fattr_init(struct nfs_fattr *fattr)
		}
		EXPORT_SYMBOL_GPL(nfs_fattr_init);

		/**
		* nfs_fattr_set_barrier
		* @fattr: attributes
		*
		* Used to set a barrier after an attribute was updated. This
		* barrier ensures that older attributes from RPC calls that may
		* have raced with our update cannot clobber these new values.
		* Note that you are still responsible for ensuring that other
		* operations which change the attribute on the server do not
		* collide.
		*/
		void nfs_fattr_set_barrier(struct nfs_fattr *fattr)
		{
		fattr->gencount = nfs_inc_attr_generation_counter();
		}

		struct nfs_fattr *nfs_alloc_fattr(void)
		{
		struct nfs_fattr *fattr;

+1 −0

Original line number	Diff line number	Diff line
		@@ -369,6 +369,7 @@ extern struct nfs_lock_context nfs_get_lock_context(struct nfs_open_context ct
		extern void nfs_put_lock_context(struct nfs_lock_context *l_ctx);
		extern u64 nfs_compat_user_ino64(u64 fileid);
		extern void nfs_fattr_init(struct nfs_fattr *fattr);
		extern void nfs_fattr_set_barrier(struct nfs_fattr *fattr);
		extern unsigned long nfs_inc_attr_generation_counter(void);

		extern struct nfs_fattr *nfs_alloc_fattr(void);