[CIFS] Avoid extra large buffer allocation (and memcpy) in cifs_readpages

Signed-off-by: Steve French <sfrench@us.ibm.com>

1 files changed, 8 insertions, 6 deletions

diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index c058f8a45b2b..8ef0ce47f5b6 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -49,7 +49,7 @@ extern int SendReceive(const unsigned int /* xid */ , struct cifsSesInfo *,
                         int * /* bytes returned */ , const int long_op);
 extern int SendReceive2(const unsigned int /* xid */ , struct cifsSesInfo *,
                         struct kvec *, int /* nvec to send */, 
-                        int * /* bytes returned */ , const int long_op);
+                        int * /* type of buf returned */ , const int long_op);
 extern int checkSMBhdr(struct smb_hdr *smb, __u16 mid);
 extern int checkSMB(struct smb_hdr *smb, __u16 mid, int length);
 extern int is_valid_oplock_break(struct smb_hdr *smb);
@@ -93,11 +93,12 @@ extern int CIFSTCon(unsigned int xid, struct cifsSesInfo *ses,
                         const struct nls_table *);
 
 extern int CIFSFindFirst(const int xid, struct cifsTconInfo *tcon,
-            const char *searchName, const struct nls_table *nls_codepage,
-            __u16 *searchHandle, struct cifs_search_info * psrch_inf, int map, const char dirsep);
+                const char *searchName, const struct nls_table *nls_codepage,
+                __u16 *searchHandle, struct cifs_search_info * psrch_inf, 
+                int map, const char dirsep);
 
 extern int CIFSFindNext(const int xid, struct cifsTconInfo *tcon,
-            __u16 searchHandle, struct cifs_search_info * psrch_inf);
+                __u16 searchHandle, struct cifs_search_info * psrch_inf);
 
 extern int CIFSFindClose(const int, struct cifsTconInfo *tcon,
                         const __u16 search_handle);
@@ -230,8 +231,9 @@ extern int CIFSSMBClose(const int xid, struct cifsTconInfo *tcon,
                         const int smb_file_id);
 
 extern int CIFSSMBRead(const int xid, struct cifsTconInfo *tcon,
-                        const int netfid, unsigned int count,
-                        const __u64 lseek, unsigned int *nbytes, char **buf);
+                        const int netfid, unsigned int count,
+                        const __u64 lseek, unsigned int *nbytes, char **buf,
+                        int * return_buf_type);
 extern int CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon,
                         const int netfid, const unsigned int count,
                         const __u64 lseek, unsigned int *nbytes,