Update Linux to v5.10.109

Sourced from [1]

[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.109.tar.xz

Change-Id: I19bca9fc6762d4e63bcf3e4cba88bbe560d9c76c
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 9a022a4..e2f0e34 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -1059,9 +1059,9 @@ static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *ve
 }
 
 static __be32 *
-xdr_encode_nfstime4(__be32 *p, const struct timespec *t)
+xdr_encode_nfstime4(__be32 *p, const struct timespec64 *t)
 {
-	p = xdr_encode_hyper(p, (__s64)t->tv_sec);
+	p = xdr_encode_hyper(p, t->tv_sec);
 	*p++ = cpu_to_be32(t->tv_nsec);
 	return p;
 }
@@ -1072,7 +1072,6 @@ static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap,
 				const struct nfs_server *server,
 				const uint32_t attrmask[])
 {
-	struct timespec ts;
 	char owner_name[IDMAP_NAMESZ];
 	char owner_group[IDMAP_NAMESZ];
 	int owner_namelen = 0;
@@ -1161,16 +1160,14 @@ static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap,
 	if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) {
 		if (iap->ia_valid & ATTR_ATIME_SET) {
 			*p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
-			ts = timespec64_to_timespec(iap->ia_atime);
-			p = xdr_encode_nfstime4(p, &ts);
+			p = xdr_encode_nfstime4(p, &iap->ia_atime);
 		} else
 			*p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
 	}
 	if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) {
 		if (iap->ia_valid & ATTR_MTIME_SET) {
 			*p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
-			ts = timespec64_to_timespec(iap->ia_mtime);
-			p = xdr_encode_nfstime4(p, &ts);
+			p = xdr_encode_nfstime4(p, &iap->ia_mtime);
 		} else
 			*p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
 	}
@@ -3683,8 +3680,6 @@ static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, st
 	if (unlikely(!p))
 		goto out_eio;
 	n = be32_to_cpup(p);
-	if (n <= 0)
-		goto out_eio;
 	for (res->nlocations = 0; res->nlocations < n; res->nlocations++) {
 		u32 m;
 		struct nfs4_fs_location *loc;
@@ -4069,17 +4064,17 @@ static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint
 }
 
 static __be32 *
-xdr_decode_nfstime4(__be32 *p, struct timespec *t)
+xdr_decode_nfstime4(__be32 *p, struct timespec64 *t)
 {
 	__u64 sec;
 
 	p = xdr_decode_hyper(p, &sec);
-	t-> tv_sec = (time_t)sec;
+	t-> tv_sec = sec;
 	t->tv_nsec = be32_to_cpup(p++);
 	return p;
 }
 
-static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
+static int decode_attr_time(struct xdr_stream *xdr, struct timespec64 *time)
 {
 	__be32 *p;
 
@@ -4090,7 +4085,7 @@ static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
 	return 0;
 }
 
-static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
+static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time)
 {
 	int status = 0;
 
@@ -4104,11 +4099,11 @@ static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, str
 			status = NFS_ATTR_FATTR_ATIME;
 		bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
 	}
-	dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
+	dprintk("%s: atime=%lld\n", __func__, time->tv_sec);
 	return status;
 }
 
-static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
+static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time)
 {
 	int status = 0;
 
@@ -4122,12 +4117,12 @@ static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, s
 			status = NFS_ATTR_FATTR_CTIME;
 		bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
 	}
-	dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
+	dprintk("%s: ctime=%lld\n", __func__, time->tv_sec);
 	return status;
 }
 
 static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
-				  struct timespec *time)
+				  struct timespec64 *time)
 {
 	int status = 0;
 
@@ -4139,8 +4134,8 @@ static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
 		status = decode_attr_time(xdr, time);
 		bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA;
 	}
-	dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec,
-		(long)time->tv_nsec);
+	dprintk("%s: time_delta=%lld %ld\n", __func__, time->tv_sec,
+		time->tv_nsec);
 	return status;
 }
 
@@ -4187,14 +4182,15 @@ static int decode_attr_security_label(struct xdr_stream *xdr, uint32_t *bitmap,
 		} else
 			printk(KERN_WARNING "%s: label too long (%u)!\n",
 					__func__, len);
+		if (label && label->label)
+			dprintk("%s: label=%.*s, len=%d, PI=%d, LFS=%d\n",
+				__func__, label->len, (char *)label->label,
+				label->len, label->pi, label->lfs);
 	}
-	if (label && label->label)
-		dprintk("%s: label=%s, len=%d, PI=%d, LFS=%d\n", __func__,
-			(char *)label->label, label->len, label->pi, label->lfs);
 	return status;
 }
 
-static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
+static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time)
 {
 	int status = 0;
 
@@ -4208,10 +4204,30 @@ static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, str
 			status = NFS_ATTR_FATTR_MTIME;
 		bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
 	}
-	dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
+	dprintk("%s: mtime=%lld\n", __func__, time->tv_sec);
 	return status;
 }
 
+static int decode_attr_xattrsupport(struct xdr_stream *xdr, uint32_t *bitmap,
+				    uint32_t *res)
+{
+	__be32 *p;
+
+	*res = 0;
+	if (unlikely(bitmap[2] & (FATTR4_WORD2_XATTR_SUPPORT - 1U)))
+		return -EIO;
+	if (likely(bitmap[2] & FATTR4_WORD2_XATTR_SUPPORT)) {
+		p = xdr_inline_decode(xdr, 4);
+		if (unlikely(!p))
+			return -EIO;
+		*res = be32_to_cpup(p);
+		bitmap[2] &= ~FATTR4_WORD2_XATTR_SUPPORT;
+	}
+	dprintk("%s: XATTR support=%s\n", __func__,
+		*res == 0 ? "false" : "true");
+	return 0;
+}
+
 static int verify_attr_len(struct xdr_stream *xdr, unsigned int savep, uint32_t attrlen)
 {
 	unsigned int attrwords = XDR_QUADLEN(attrlen);
@@ -4866,6 +4882,11 @@ static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
 	if (status)
 		goto xdr_error;
 
+	status = decode_attr_xattrsupport(xdr, bitmap,
+					  &fsinfo->xattr_support);
+	if (status)
+		goto xdr_error;
+
 	status = verify_attr_len(xdr, savep, attrlen);
 xdr_error:
 	dprintk("%s: xdr returned %d!\n", __func__, -status);
@@ -5238,7 +5259,7 @@ static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
 	 * The XDR encode routine has set things up so that
 	 * the link text will be copied directly into the
 	 * buffer.  We just have to do overflow-checking,
-	 * and and null-terminate the text (the VFS expects
+	 * and null-terminate the text (the VFS expects
 	 * null-termination).
 	 */
 	xdr_terminate_string(rcvbuf, len);
@@ -5290,7 +5311,6 @@ static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
 	uint32_t attrlen,
 		 bitmap[3] = {0};
 	int status;
-	unsigned int pg_offset;
 
 	res->acl_len = 0;
 	if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
@@ -5298,9 +5318,6 @@ static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
 
 	xdr_enter_page(xdr, xdr->buf->page_len);
 
-	/* Calculate the offset of the page data */
-	pg_offset = xdr->buf->head[0].iov_len;
-
 	if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
 		goto out;
 	if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
@@ -5313,7 +5330,7 @@ static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
 		/* The bitmap (xdr len + bitmaps) and the attr xdr len words
 		 * are stored with the acl data to handle the problem of
 		 * variable length bitmaps.*/
-		res->acl_data_offset = xdr_stream_pos(xdr) - pg_offset;
+		res->acl_data_offset = xdr_page_pos(xdr);
 		res->acl_len = attrlen;
 
 		/* Check for receive buffer overflow */
@@ -7467,6 +7484,8 @@ static struct {
 	{ NFS4ERR_SYMLINK,	-ELOOP		},
 	{ NFS4ERR_OP_ILLEGAL,	-EOPNOTSUPP	},
 	{ NFS4ERR_DEADLOCK,	-EDEADLK	},
+	{ NFS4ERR_NOXATTR,	-ENODATA	},
+	{ NFS4ERR_XATTR2BIG,	-E2BIG		},
 	{ -1,			-EIO		}
 };
 
@@ -7592,8 +7611,14 @@ const struct rpc_procinfo nfs4_procedures[] = {
 	PROC42(CLONE,		enc_clone,		dec_clone),
 	PROC42(COPY,		enc_copy,		dec_copy),
 	PROC42(OFFLOAD_CANCEL,	enc_offload_cancel,	dec_offload_cancel),
+	PROC42(COPY_NOTIFY,	enc_copy_notify,	dec_copy_notify),
 	PROC(LOOKUPP,		enc_lookupp,		dec_lookupp),
 	PROC42(LAYOUTERROR,	enc_layouterror,	dec_layouterror),
+	PROC42(GETXATTR,	enc_getxattr,		dec_getxattr),
+	PROC42(SETXATTR,	enc_setxattr,		dec_setxattr),
+	PROC42(LISTXATTRS,	enc_listxattrs,		dec_listxattrs),
+	PROC42(REMOVEXATTR,	enc_removexattr,	dec_removexattr),
+	PROC42(READ_PLUS,	enc_read_plus,		dec_read_plus),
 };
 
 static unsigned int nfs_version4_counts[ARRAY_SIZE(nfs4_procedures)];