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2024-05-11 04dd17822334871b23ea2862f7798fb0e0007777

 kernel/fs/nfs/flexfilelayout/flexfilelayout.h
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@@ -81,8 +81,8 @@
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 	u32				fh_versions_cnt;
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 	struct nfs_fh			*fh_versions;
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 	nfs4_stateid			stateid;
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-	struct rpc_cred	__rcu		*ro_cred;
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-	struct rpc_cred	__rcu		*rw_cred;
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+	const struct cred __rcu		*ro_cred;
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+	const struct cred __rcu		*rw_cred;
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 	refcount_t			ref;
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 	spinlock_t			lock;
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 	unsigned long			flags;
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@@ -99,7 +99,7 @@
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 	u64				stripe_unit;
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 	u32				flags;
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 	u32				mirror_array_cnt;
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-	struct nfs4_ff_layout_mirror	**mirror_array;
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+	struct nfs4_ff_layout_mirror	*mirror_array[];
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 };
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 struct nfs4_flexfile_layout {
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@@ -180,28 +180,10 @@
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 	return FF_LAYOUT_LSEG(lseg)->flags & FF_FLAGS_NO_READ_IO;
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 }
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-static inline bool
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-ff_layout_test_devid_unavailable(struct nfs4_deviceid_node *node)
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-{
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-	/*
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-	 * Flexfiles should never mark a DS unavailable, but if it does
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-	 * print a (ratelimited) warning as this can affect performance.
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-	 */
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-	if (nfs4_test_deviceid_unavailable(node)) {
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-		u32 *p = (u32 *)node->deviceid.data;
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-
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-		pr_warn_ratelimited("NFS: flexfiles layout referencing an "
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-				"unavailable device [%x%x%x%x]\n",
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-				p[0], p[1], p[2], p[3]);
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-		return true;
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-	}
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-	return false;
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-}
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-
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 static inline int
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-nfs4_ff_layout_ds_version(struct pnfs_layout_segment *lseg, u32 ds_idx)
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+nfs4_ff_layout_ds_version(const struct nfs4_ff_layout_mirror *mirror)
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 {
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-	return FF_LAYOUT_COMP(lseg, ds_idx)->mirror_ds->ds_versions[0].version;
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+	return mirror->mirror_ds->ds_versions[0].version;
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 }
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 struct nfs4_ff_layout_ds *
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@@ -213,6 +195,7 @@
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 			     struct nfs4_ff_layout_mirror *mirror, u64 offset,
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 			     u64 length, int status, enum nfs_opnum4 opnum,
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 			     gfp_t gfp_flags);
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+void ff_layout_send_layouterror(struct pnfs_layout_segment *lseg);
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 int ff_layout_encode_ds_ioerr(struct xdr_stream *xdr, const struct list_head *head);
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 void ff_layout_free_ds_ioerr(struct list_head *head);
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 unsigned int ff_layout_fetch_ds_ioerr(struct pnfs_layout_hdr *lo,
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@@ -220,23 +203,23 @@
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 		struct list_head *head,
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 		unsigned int maxnum);
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 struct nfs_fh *
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-nfs4_ff_layout_select_ds_fh(struct pnfs_layout_segment *lseg, u32 mirror_idx);
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-int
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-nfs4_ff_layout_select_ds_stateid(struct pnfs_layout_segment *lseg,
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-				u32 mirror_idx,
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-				nfs4_stateid *stateid);
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+nfs4_ff_layout_select_ds_fh(struct nfs4_ff_layout_mirror *mirror);
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+void
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+nfs4_ff_layout_select_ds_stateid(const struct nfs4_ff_layout_mirror *mirror,
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+		nfs4_stateid *stateid);
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 struct nfs4_pnfs_ds *
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-nfs4_ff_layout_prepare_ds(struct pnfs_layout_segment *lseg, u32 ds_idx,
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+nfs4_ff_layout_prepare_ds(struct pnfs_layout_segment *lseg,
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+			  struct nfs4_ff_layout_mirror *mirror,
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 			  bool fail_return);
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 struct rpc_clnt *
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-nfs4_ff_find_or_create_ds_client(struct pnfs_layout_segment *lseg,
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-				 u32 ds_idx,
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+nfs4_ff_find_or_create_ds_client(struct nfs4_ff_layout_mirror *mirror,
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 				 struct nfs_client *ds_clp,
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 				 struct inode *inode);
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-struct rpc_cred *ff_layout_get_ds_cred(struct pnfs_layout_segment *lseg,
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-				       u32 ds_idx, struct rpc_cred *mdscred);
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+const struct cred *ff_layout_get_ds_cred(struct nfs4_ff_layout_mirror *mirror,
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+					 const struct pnfs_layout_range *range,
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+					 const struct cred *mdscred);
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 bool ff_layout_avoid_mds_available_ds(struct pnfs_layout_segment *lseg);
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 bool ff_layout_avoid_read_on_rw(struct pnfs_layout_segment *lseg);
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