cifs: when server doesn't set CAP_LARGE_READ_X, cap default rsize at MaxBufferSize

[pandora-kernel.git] / fs / cifs / connect.c

diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 78db68a..0ae86dd 100644 (file)
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -1653,24 +1653,26 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
                         * If yes, we have encountered a double deliminator
                         * reset the NULL character to the deliminator
                         */
-                       if (tmp_end < end && tmp_end[1] == delim)
+                       if (tmp_end < end && tmp_end[1] == delim) {
                                tmp_end[0] = delim;
 
-                       /* Keep iterating until we get to a single deliminator
-                        * OR the end
-                        */
-                       while ((tmp_end = strchr(tmp_end, delim)) != NULL &&
-                              (tmp_end[1] == delim)) {
-                               tmp_end = (char *) &tmp_end[2];
-                       }
+                               /* Keep iterating until we get to a single
+                                * deliminator OR the end
+                                */
+                               while ((tmp_end = strchr(tmp_end, delim))
+                                       != NULL && (tmp_end[1] == delim)) {
+                                               tmp_end = (char *) &tmp_end[2];
+                               }
 
-                       /* Reset var options to point to next element */
-                       if (tmp_end) {
-                               tmp_end[0] = '\0';
-                               options = (char *) &tmp_end[1];
-                       } else
-                               /* Reached the end of the mount option string */
-                               options = end;
+                               /* Reset var options to point to next element */
+                               if (tmp_end) {
+                                       tmp_end[0] = '\0';
+                                       options = (char *) &tmp_end[1];
+                               } else
+                                       /* Reached the end of the mount option
+                                        * string */
+                                       options = end;
+                       }
 
                        /* Now build new password string */
                        temp_len = strlen(value);
@@ -3493,18 +3495,15 @@ cifs_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *pvolume_info)
         * 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 advertises a MaxBufferSize of less than one page,
-        * assume that it also can't satisfy reads larger than that either.
-        *
-        * FIXME: Is there a better heuristic for this?
+        * 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 if (server->maxBuf >= PAGE_CACHE_SIZE)
-               defsize = CIFSMaxBufSize;
        else
                defsize = server->maxBuf - sizeof(READ_RSP);