[CIFS] Remove calls to to take f_owner.lock

CIFS takes/releases f_owner.lock - why?  It does not change anything in the
fowner state.  Remove this locking.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Steve French <sfrench@us.ibm.com>

1 files changed, 0 insertions, 9 deletions

diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 616b140534be..e9c1573f6aa7 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -110,7 +110,6 @@ static inline int cifs_open_inode_helper(struct inode *inode, struct file *file,
                          &pCifsInode->openFileList);
         }
         write_unlock(&GlobalSMBSeslock);
-        write_unlock(&file->f_owner.lock);
         if (pCifsInode->clientCanCacheRead) {
                 /* we have the inode open somewhere else
                    no need to discard cache data */
@@ -287,7 +286,6 @@ int cifs_open(struct inode *inode, struct file *file)
                 goto out;
         }
         pCifsFile = cifs_init_private(file->private_data, inode, file, netfid);
-        write_lock(&file->f_owner.lock);
         write_lock(&GlobalSMBSeslock);
         list_add(&pCifsFile->tlist, &pTcon->openFileList);
 
@@ -298,7 +296,6 @@ int cifs_open(struct inode *inode, struct file *file)
                                             &oplock, buf, full_path, xid);
         } else {
                 write_unlock(&GlobalSMBSeslock);
-                write_unlock(&file->f_owner.lock);
         }
 
         if (oplock & CIFS_CREATE_ACTION) {           
@@ -477,7 +474,6 @@ int cifs_close(struct inode *inode, struct file *file)
         pTcon = cifs_sb->tcon;
         if (pSMBFile) {
                 pSMBFile->closePend = TRUE;
-                write_lock(&file->f_owner.lock);
                 if (pTcon) {
                         /* no sense reconnecting to close a file that is
                            already closed */
@@ -492,23 +488,18 @@ int cifs_close(struct inode *inode, struct file *file)
                                         the struct would be in each open file,
                                         but this should give enough time to 
                                         clear the socket */
-                                        write_unlock(&file->f_owner.lock);
                                         cERROR(1,("close with pending writes"));
                                         msleep(timeout);
-                                        write_lock(&file->f_owner.lock);
                                         timeout *= 4;
                                 } 
-                                write_unlock(&file->f_owner.lock);
                                 rc = CIFSSMBClose(xid, pTcon,
                                                   pSMBFile->netfid);
-                                write_lock(&file->f_owner.lock);
                         }
                 }
                 write_lock(&GlobalSMBSeslock);
                 list_del(&pSMBFile->flist);
                 list_del(&pSMBFile->tlist);
                 write_unlock(&GlobalSMBSeslock);
-                write_unlock(&file->f_owner.lock);
                 kfree(pSMBFile->search_resume_name);
                 kfree(file->private_data);
                 file->private_data = NULL;