1 files changed, 14 insertions, 5 deletions

diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 88f60aa5205..ef5ae6f93c7 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -1785,11 +1785,20 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
                 } else if(volume_info.wsize)
                         cifs_sb->wsize = volume_info.wsize;
                 else
-                        cifs_sb->wsize = CIFSMaxBufSize; /* default */
-                if(cifs_sb->rsize < PAGE_CACHE_SIZE) {
-                        cifs_sb->rsize = PAGE_CACHE_SIZE; 
-                        /* Windows ME does this */
-                        cFYI(1,("Attempt to set readsize for mount to less than one page (4096)"));
+                        cifs_sb->wsize = 
+                                min_t(const int, PAGEVEC_SIZE * PAGE_CACHE_SIZE,
+                                        127*1024);
+                        /* old default of CIFSMaxBufSize was too small now
+                           that SMB Write2 can send multiple pages in kvec.   
+                           RFC1001 does not describe what happens when frame
+                           bigger than 128K is sent so use that as max in
+                           conjunction with 52K kvec constraint on arch with 4K
+                           page size  */
+
+                if(cifs_sb->rsize < 2048) {
+                        cifs_sb->rsize = 2048; 
+                        /* Windows ME may prefer this */
+                        cFYI(1,("readsize set to minimum 2048"));
                 }
                 cifs_sb->mnt_uid = volume_info.linux_uid;
                 cifs_sb->mnt_gid = volume_info.linux_gid;