Commit 124a27fe authored by Ingo Molnar's avatar Ingo Molnar Committed by Steve French
Browse files

[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: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarSteve French <sfrench@us.ibm.com>
parent cd49b492

fs/cifs/file.c

+0 −9
Original line number Diff line number Diff line
@@ -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;