Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6

Pull CIFS fixes from Steve French:
 "CIFS update including case insensitive file name matching improvements
  for UTF-8 to Unicode, various small cifs fixes, SMB2/SMB3 leasing
  improvements, support for following SMB2 symlinks, SMB3 packet signing
  improvements"

* 'for-next' of git://git.samba.org/sfrench/cifs-2.6: (25 commits)
  CIFS: Respect epoch value from create lease context v2
  CIFS: Add create lease v2 context for SMB3
  CIFS: Move parsing lease buffer to ops struct
  CIFS: Move creating lease buffer to ops struct
  CIFS: Store lease state itself rather than a mapped oplock value
  CIFS: Replace clientCanCache* bools with an integer
  [CIFS] quiet sparse compile warning
  cifs: Start using per session key for smb2/3 for signature generation
  cifs: Add a variable specific to NTLMSSP for key exchange.
  cifs: Process post session setup code in respective dialect functions.
  CIFS: convert to use le32_add_cpu()
  CIFS: Fix missing lease break
  CIFS: Fix a memory leak when a lease break comes
  cifs: add winucase_convert.pl to Documentation/ directory
  cifs: convert case-insensitive dentry ops to use new case conversion routines
  cifs: add new case-insensitive conversion routines that are based on wchar_t's
  [CIFS] Add Scott to list of cifs contributors
  cifs: Move and expand MAX_SERVER_SIZE definition
  cifs: Expand max share name length to 256
  cifs: Move string length definitions to uapi
  ...

1 files changed, 19 insertions, 16 deletions

diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 9d0dd952ad79..d044b35ce228 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -313,8 +313,7 @@ cifs_new_fileinfo(struct cifs_fid *fid, struct file *file,
 	 * If the server returned a read oplock and we have mandatory brlocks,
 	 * set oplock level to None.
 	 */
-	if (oplock == server->vals->oplock_read &&
-						cifs_has_mand_locks(cinode)) {
+	if (server->ops->is_read_op(oplock) && cifs_has_mand_locks(cinode)) {
 		cifs_dbg(FYI, "Reset oplock val from read to None due to mand locks\n");
 		oplock = 0;
 	}
@@ -324,6 +323,7 @@ cifs_new_fileinfo(struct cifs_fid *fid, struct file *file,
 		oplock = fid->pending_open->oplock;
 	list_del(&fid->pending_open->olist);
 
+	fid->purge_cache = false;
 	server->ops->set_fid(cfile, fid, oplock);
 
 	list_add(&cfile->tlist, &tcon->openFileList);
@@ -334,6 +334,9 @@ cifs_new_fileinfo(struct cifs_fid *fid, struct file *file,
 		list_add_tail(&cfile->flist, &cinode->openFileList);
 	spin_unlock(&cifs_file_list_lock);
 
+	if (fid->purge_cache)
+		cifs_invalidate_mapping(inode);
+
 	file->private_data = cfile;
 	return cfile;
 }
@@ -1524,12 +1527,12 @@ cifs_setlk(struct file *file, struct file_lock *flock, __u32 type,
 		 * read won't conflict with non-overlapted locks due to
 		 * pagereading.
 		 */
-		if (!CIFS_I(inode)->clientCanCacheAll &&
-					CIFS_I(inode)->clientCanCacheRead) {
+		if (!CIFS_CACHE_WRITE(CIFS_I(inode)) &&
+					CIFS_CACHE_READ(CIFS_I(inode))) {
 			cifs_invalidate_mapping(inode);
 			cifs_dbg(FYI, "Set no oplock for inode=%p due to mand locks\n",
 				 inode);
-			CIFS_I(inode)->clientCanCacheRead = false;
+			CIFS_I(inode)->oplock = 0;
 		}
 
 		rc = server->ops->mand_lock(xid, cfile, flock->fl_start, length,
@@ -2213,7 +2216,7 @@ int cifs_strict_fsync(struct file *file, loff_t start, loff_t end,
 	cifs_dbg(FYI, "Sync file - name: %s datasync: 0x%x\n",
 		 file->f_path.dentry->d_name.name, datasync);
 
-	if (!CIFS_I(inode)->clientCanCacheRead) {
+	if (!CIFS_CACHE_READ(CIFS_I(inode))) {
 		rc = cifs_invalidate_mapping(inode);
 		if (rc) {
 			cifs_dbg(FYI, "rc: %d during invalidate phase\n", rc);
@@ -2577,7 +2580,7 @@ cifs_strict_writev(struct kiocb *iocb, const struct iovec *iov,
 	struct cifs_tcon *tcon = tlink_tcon(cfile->tlink);
 	ssize_t written;
 
-	if (cinode->clientCanCacheAll) {
+	if (CIFS_CACHE_WRITE(cinode)) {
 		if (cap_unix(tcon->ses) &&
 		(CIFS_UNIX_FCNTL_CAP & le64_to_cpu(tcon->fsUnixInfo.Capability))
 		    && ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOPOSIXBRL) == 0))
@@ -2591,7 +2594,7 @@ cifs_strict_writev(struct kiocb *iocb, const struct iovec *iov,
 	 * these pages but not on the region from pos to ppos+len-1.
 	 */
 	written = cifs_user_writev(iocb, iov, nr_segs, pos);
-	if (written > 0 && cinode->clientCanCacheRead) {
+	if (written > 0 && CIFS_CACHE_READ(cinode)) {
 		/*
 		 * Windows 7 server can delay breaking level2 oplock if a write
 		 * request comes - break it on the client to prevent reading
@@ -2600,7 +2603,7 @@ cifs_strict_writev(struct kiocb *iocb, const struct iovec *iov,
 		cifs_invalidate_mapping(inode);
 		cifs_dbg(FYI, "Set no oplock for inode=%p after a write operation\n",
 			 inode);
-		cinode->clientCanCacheRead = false;
+		cinode->oplock = 0;
 	}
 	return written;
 }
@@ -2957,7 +2960,7 @@ cifs_strict_readv(struct kiocb *iocb, const struct iovec *iov,
 	 * on pages affected by this read but not on the region from pos to
 	 * pos+len-1.
 	 */
-	if (!cinode->clientCanCacheRead)
+	if (!CIFS_CACHE_READ(cinode))
 		return cifs_user_readv(iocb, iov, nr_segs, pos);
 
 	if (cap_unix(tcon->ses) &&
@@ -3093,7 +3096,7 @@ int cifs_file_strict_mmap(struct file *file, struct vm_area_struct *vma)
 
 	xid = get_xid();
 
-	if (!CIFS_I(inode)->clientCanCacheRead) {
+	if (!CIFS_CACHE_READ(CIFS_I(inode))) {
 		rc = cifs_invalidate_mapping(inode);
 		if (rc)
 			return rc;
@@ -3526,7 +3529,7 @@ static int cifs_write_begin(struct file *file, struct address_space *mapping,
 	 * is, when the page lies beyond the EOF, or straddles the EOF
 	 * and the write will cover all of the existing data.
 	 */
-	if (CIFS_I(mapping->host)->clientCanCacheRead) {
+	if (CIFS_CACHE_READ(CIFS_I(mapping->host))) {
 		i_size = i_size_read(mapping->host);
 		if (page_start >= i_size ||
 		    (offset == 0 && (pos + len) >= i_size)) {
@@ -3609,20 +3612,20 @@ void cifs_oplock_break(struct work_struct *work)
 	struct cifs_tcon *tcon = tlink_tcon(cfile->tlink);
 	int rc = 0;
 
-	if (!cinode->clientCanCacheAll && cinode->clientCanCacheRead &&
+	if (!CIFS_CACHE_WRITE(cinode) && CIFS_CACHE_READ(cinode) &&
 						cifs_has_mand_locks(cinode)) {
 		cifs_dbg(FYI, "Reset oplock to None for inode=%p due to mand locks\n",
 			 inode);
-		cinode->clientCanCacheRead = false;
+		cinode->oplock = 0;
 	}
 
 	if (inode && S_ISREG(inode->i_mode)) {
-		if (cinode->clientCanCacheRead)
+		if (CIFS_CACHE_READ(cinode))
 			break_lease(inode, O_RDONLY);
 		else
 			break_lease(inode, O_WRONLY);
 		rc = filemap_fdatawrite(inode->i_mapping);
-		if (cinode->clientCanCacheRead == 0) {
+		if (!CIFS_CACHE_READ(cinode)) {
 			rc = filemap_fdatawait(inode->i_mapping);
 			mapping_set_error(inode->i_mapping, rc);
 			cifs_invalidate_mapping(inode);