Merge branch 'disintegrate-asm-generic' of git://git.infradead.org/users/dhowells/linux-headers into asm-generic

Patches from David Howells <dhowells@redhat.com>:

This is to complete part of the UAPI disintegration for which the
preparatory patches were pulled recently.

Note that there are some fixup patches which are at the base of the
branch aimed at you, plus all arches get the asm-generic branch merged in too.

* 'disintegrate-asm-generic' of git://git.infradead.org/users/dhowells/linux-headers:
  UAPI: (Scripted) Disintegrate include/asm-generic
  UAPI: Fix conditional header installation handling (notably kvm_para.h on m68k)
  c6x: remove c6x signal.h
  UAPI: Split compound conditionals containing __KERNEL__ in Arm64
  UAPI: Fix the guards on various asm/unistd.h files

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 22 insertions, 176 deletions

diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 6df6fa14cba..2fdbe08a7a2 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -82,8 +82,7 @@ enum {
 	Opt_serverino, Opt_noserverino,
 	Opt_rwpidforward, Opt_cifsacl, Opt_nocifsacl,
 	Opt_acl, Opt_noacl, Opt_locallease,
-	Opt_sign, Opt_seal, Opt_direct,
-	Opt_strictcache, Opt_noac,
+	Opt_sign, Opt_seal, Opt_noac,
 	Opt_fsc, Opt_mfsymlinks,
 	Opt_multiuser, Opt_sloppy,
 
@@ -160,10 +159,6 @@ static const match_table_t cifs_mount_option_tokens = {
 	{ Opt_locallease, "locallease" },
 	{ Opt_sign, "sign" },
 	{ Opt_seal, "seal" },
-	{ Opt_direct, "direct" },
-	{ Opt_direct, "directio" },
-	{ Opt_direct, "forcedirectio" },
-	{ Opt_strictcache, "strictcache" },
 	{ Opt_noac, "noac" },
 	{ Opt_fsc, "fsc" },
 	{ Opt_mfsymlinks, "mfsymlinks" },
@@ -277,6 +272,7 @@ static const match_table_t cifs_cacheflavor_tokens = {
 static const match_table_t cifs_smb_version_tokens = {
 	{ Smb_1, SMB1_VERSION_STRING },
 	{ Smb_21, SMB21_VERSION_STRING },
+	{ Smb_30, SMB30_VERSION_STRING },
 };
 
 static int ip_connect(struct TCP_Server_Info *server);
@@ -819,6 +815,10 @@ standard_receive3(struct TCP_Server_Info *server, struct mid_q_entry *mid)
 		cifs_dump_mem("Bad SMB: ", buf,
 			min_t(unsigned int, server->total_read, 48));
 
+	if (server->ops->is_status_pending &&
+	    server->ops->is_status_pending(buf, server, length))
+		return -1;
+
 	if (!mid)
 		return length;
 
@@ -1075,6 +1075,10 @@ cifs_parse_smb_version(char *value, struct smb_vol *vol)
 		vol->ops = &smb21_operations;
 		vol->vals = &smb21_values;
 		break;
+	case Smb_30:
+		vol->ops = &smb21_operations; /* currently identical with 2.1 */
+		vol->vals = &smb30_values;
+		break;
 #endif
 	default:
 		cERROR(1, "Unknown vers= option specified: %s", value);
@@ -1101,8 +1105,6 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
 	char *string = NULL;
 	char *tmp_end, *value;
 	char delim;
-	bool cache_specified = false;
-	static bool cache_warned = false;
 
 	separator[0] = ',';
 	separator[1] = 0;
@@ -1134,6 +1136,9 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
 	/* default to using server inode numbers where available */
 	vol->server_ino = 1;
 
+	/* default is to use strict cifs caching semantics */
+	vol->strict_io = true;
+
 	vol->actimeo = CIFS_DEF_ACTIMEO;
 
 	/* FIXME: add autonegotiation -- for now, SMB1 is default */
@@ -1317,22 +1322,6 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
 			 */
 			vol->seal = 1;
 			break;
-		case Opt_direct:
-			cache_specified = true;
-			vol->direct_io = true;
-			vol->strict_io = false;
-			cERROR(1, "The \"directio\" option will be removed in "
-				  "3.7. Please switch to the \"cache=none\" "
-				  "option.");
-			break;
-		case Opt_strictcache:
-			cache_specified = true;
-			vol->direct_io = false;
-			vol->strict_io = true;
-			cERROR(1, "The \"strictcache\" option will be removed "
-				"in 3.7. Please switch to the \"cache=strict\" "
-				"option.");
-			break;
 		case Opt_noac:
 			printk(KERN_WARNING "CIFS: Mount option noac not "
 				"supported. Instead set "
@@ -1676,8 +1665,13 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
 			if (string == NULL)
 				goto out_nomem;
 
-			if (strnicmp(string, "TCP_NODELAY", 11) == 0)
+			if (strnicmp(string, "TCP_NODELAY", 11) == 0) {
+				printk(KERN_WARNING "CIFS: the "
+					"sockopt=TCP_NODELAY option has been "
+					"deprecated and will be removed "
+					"in 3.9\n");
 				vol->sockopt_tcp_nodelay = 1;
+			}
 			break;
 		case Opt_netbiosname:
 			string = match_strdup(args);
@@ -1762,7 +1756,6 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
 				goto cifs_parse_mount_err;
 			break;
 		case Opt_cache:
-			cache_specified = true;
 			string = match_strdup(args);
 			if (string == NULL)
 				goto out_nomem;
@@ -1813,14 +1806,6 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
 		printk(KERN_NOTICE "CIFS: ignoring forcegid mount option "
 				   "specified with no gid= option.\n");
 
-	/* FIXME: remove this block in 3.7 */
-	if (!cache_specified && !cache_warned) {
-		cache_warned = true;
-		printk(KERN_NOTICE "CIFS: no cache= option specified, using "
-				   "\"cache=loose\". This default will change "
-				   "to \"cache=strict\" in 3.7.\n");
-	}
-
 	kfree(mountdata_copy);
 	return 0;
 
@@ -2636,6 +2621,7 @@ cifs_get_tcon(struct cifs_ses *ses, struct smb_vol *volume_info)
 	tcon->retry = volume_info->retry;
 	tcon->nocase = volume_info->nocase;
 	tcon->local_lease = volume_info->local_lease;
+	INIT_LIST_HEAD(&tcon->pending_opens);
 
 	spin_lock(&cifs_tcp_ses_lock);
 	list_add(&tcon->tcon_list, &ses->tcon_list);
@@ -3261,146 +3247,6 @@ void cifs_setup_cifs_sb(struct smb_vol *pvolume_info,
 			   "mount option supported");
 }
 
-/*
- * When the server supports very large reads and writes via POSIX extensions,
- * we can allow up to 2^24-1, minus the size of a READ/WRITE_AND_X header, not
- * including the RFC1001 length.
- *
- * Note that this might make for "interesting" allocation problems during
- * writeback however as we have to allocate an array of pointers for the
- * pages. A 16M write means ~32kb page array with PAGE_CACHE_SIZE == 4096.
- *
- * For reads, there is a similar problem as we need to allocate an array
- * of kvecs to handle the receive, though that should only need to be done
- * once.
- */
-#define CIFS_MAX_WSIZE ((1<<24) - 1 - sizeof(WRITE_REQ) + 4)
-#define CIFS_MAX_RSIZE ((1<<24) - sizeof(READ_RSP) + 4)
-
-/*
- * When the server doesn't allow large posix writes, only allow a rsize/wsize
- * of 2^17-1 minus the size of the call header. That allows for a read or
- * write up to the maximum size described by RFC1002.
- */
-#define CIFS_MAX_RFC1002_WSIZE ((1<<17) - 1 - sizeof(WRITE_REQ) + 4)
-#define CIFS_MAX_RFC1002_RSIZE ((1<<17) - 1 - sizeof(READ_RSP) + 4)
-
-/*
- * The default wsize is 1M. find_get_pages seems to return a maximum of 256
- * pages in a single call. With PAGE_CACHE_SIZE == 4k, this means we can fill
- * a single wsize request with a single call.
- */
-#define CIFS_DEFAULT_IOSIZE (1024 * 1024)
-
-/*
- * Windows only supports a max of 60kb reads and 65535 byte writes. Default to
- * those values when posix extensions aren't in force. In actuality here, we
- * use 65536 to allow for a write that is a multiple of 4k. Most servers seem
- * to be ok with the extra byte even though Windows doesn't send writes that
- * are that large.
- *
- * Citation:
- *
- * http://blogs.msdn.com/b/openspecification/archive/2009/04/10/smb-maximum-transmit-buffer-size-and-performance-tuning.aspx
- */
-#define CIFS_DEFAULT_NON_POSIX_RSIZE (60 * 1024)
-#define CIFS_DEFAULT_NON_POSIX_WSIZE (65536)
-
-/*
- * On hosts with high memory, we can't currently support wsize/rsize that are
- * larger than we can kmap at once. Cap the rsize/wsize at
- * LAST_PKMAP * PAGE_SIZE. We'll never be able to fill a read or write request
- * larger than that anyway.
- */
-#ifdef CONFIG_HIGHMEM
-#define CIFS_KMAP_SIZE_LIMIT	(LAST_PKMAP * PAGE_CACHE_SIZE)
-#else /* CONFIG_HIGHMEM */
-#define CIFS_KMAP_SIZE_LIMIT	(1<<24)
-#endif /* CONFIG_HIGHMEM */
-
-static unsigned int
-cifs_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *pvolume_info)
-{
-	__u64 unix_cap = le64_to_cpu(tcon->fsUnixInfo.Capability);
-	struct TCP_Server_Info *server = tcon->ses->server;
-	unsigned int wsize;
-
-	/* start with specified wsize, or default */
-	if (pvolume_info->wsize)
-		wsize = pvolume_info->wsize;
-	else if (tcon->unix_ext && (unix_cap & CIFS_UNIX_LARGE_WRITE_CAP))
-		wsize = CIFS_DEFAULT_IOSIZE;
-	else
-		wsize = CIFS_DEFAULT_NON_POSIX_WSIZE;
-
-	/* can server support 24-bit write sizes? (via UNIX extensions) */
-	if (!tcon->unix_ext || !(unix_cap & CIFS_UNIX_LARGE_WRITE_CAP))
-		wsize = min_t(unsigned int, wsize, CIFS_MAX_RFC1002_WSIZE);
-
-	/*
-	 * no CAP_LARGE_WRITE_X or is signing enabled without CAP_UNIX set?
-	 * Limit it to max buffer offered by the server, minus the size of the
-	 * WRITEX header, not including the 4 byte RFC1001 length.
-	 */
-	if (!(server->capabilities & CAP_LARGE_WRITE_X) ||
-	    (!(server->capabilities & CAP_UNIX) &&
-	     (server->sec_mode & (SECMODE_SIGN_ENABLED|SECMODE_SIGN_REQUIRED))))
-		wsize = min_t(unsigned int, wsize,
-				server->maxBuf - sizeof(WRITE_REQ) + 4);
-
-	/* limit to the amount that we can kmap at once */
-	wsize = min_t(unsigned int, wsize, CIFS_KMAP_SIZE_LIMIT);
-
-	/* hard limit of CIFS_MAX_WSIZE */
-	wsize = min_t(unsigned int, wsize, CIFS_MAX_WSIZE);
-
-	return wsize;
-}
-
-static unsigned int
-cifs_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *pvolume_info)
-{
-	__u64 unix_cap = le64_to_cpu(tcon->fsUnixInfo.Capability);
-	struct TCP_Server_Info *server = tcon->ses->server;
-	unsigned int rsize, defsize;
-
-	/*
-	 * Set default value...
-	 *
-	 * HACK alert! Ancient servers have very small buffers. Even though
-	 * MS-CIFS indicates that servers are only limited by the client's
-	 * bufsize for reads, testing against win98se shows that it throws
-	 * INVALID_PARAMETER errors if you try to request too large a read.
-	 * OS/2 just sends back short reads.
-	 *
-	 * If the server doesn't advertise CAP_LARGE_READ_X, then assume that
-	 * it can't handle a read request larger than its MaxBufferSize either.
-	 */
-	if (tcon->unix_ext && (unix_cap & CIFS_UNIX_LARGE_READ_CAP))
-		defsize = CIFS_DEFAULT_IOSIZE;
-	else if (server->capabilities & CAP_LARGE_READ_X)
-		defsize = CIFS_DEFAULT_NON_POSIX_RSIZE;
-	else
-		defsize = server->maxBuf - sizeof(READ_RSP);
-
-	rsize = pvolume_info->rsize ? pvolume_info->rsize : defsize;
-
-	/*
-	 * no CAP_LARGE_READ_X? Then MS-CIFS states that we must limit this to
-	 * the client's MaxBufferSize.
-	 */
-	if (!(server->capabilities & CAP_LARGE_READ_X))
-		rsize = min_t(unsigned int, CIFSMaxBufSize, rsize);
-
-	/* limit to the amount that we can kmap at once */
-	rsize = min_t(unsigned int, rsize, CIFS_KMAP_SIZE_LIMIT);
-
-	/* hard limit of CIFS_MAX_RSIZE */
-	rsize = min_t(unsigned int, rsize, CIFS_MAX_RSIZE);
-
-	return rsize;
-}
-
 static void
 cleanup_volume_info_contents(struct smb_vol *volume_info)
 {
@@ -3651,8 +3497,8 @@ try_mount_again:
 	if (!tcon->ipc && server->ops->qfs_tcon)
 		server->ops->qfs_tcon(xid, tcon);
 
-	cifs_sb->wsize = cifs_negotiate_wsize(tcon, volume_info);
-	cifs_sb->rsize = cifs_negotiate_rsize(tcon, volume_info);
+	cifs_sb->wsize = server->ops->negotiate_wsize(tcon, volume_info);
+	cifs_sb->rsize = server->ops->negotiate_rsize(tcon, volume_info);
 
 	/* tune readahead according to rsize */
 	cifs_sb->bdi.ra_pages = cifs_sb->rsize / PAGE_CACHE_SIZE;