CIFS: Add cifs_set_oplock_level

Simplify many places when we need to set oplock level on an inode.

Signed-off-by: Pavel Shilovsky <piastryyy@gmail.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>

diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index edb6d90efdf27ac2272c961c7269fbbfab2c0aa7..7f050f4fc3d94d898447731944f07dc80da2a9fb 100644 (file)
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -104,6 +104,7 @@ extern struct timespec cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);
 extern u64 cifs_UnixTimeToNT(struct timespec);
 extern struct timespec cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
                                      int offset);
+extern void cifs_set_oplock_level(struct inode *inode, __u32 oplock);
 
 extern struct cifsFileInfo *cifs_new_fileinfo(__u16 fileHandle,
                                struct file *file, struct tcon_link *tlink,

diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 5d06eb3078de17f590b05a1e3bbc7f8bf2c4e2f7..a566f155df491c90bec56a6e985feb85824112ed 100644 (file)
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -146,12 +146,7 @@ client_can_cache:
                rc = cifs_get_inode_info(&inode, full_path, buf, inode->i_sb,
                                         xid, NULL);
 
-       if ((oplock & 0xF) == OPLOCK_EXCLUSIVE) {
-               pCifsInode->clientCanCacheAll = true;
-               pCifsInode->clientCanCacheRead = true;
-               cFYI(1, "Exclusive Oplock granted on inode %p", inode);
-       } else if ((oplock & 0xF) == OPLOCK_READ)
-               pCifsInode->clientCanCacheRead = true;
+       cifs_set_oplock_level(inode, oplock);
 
        return rc;
 }
@@ -253,12 +248,7 @@ cifs_new_fileinfo(__u16 fileHandle, struct file *file,
                list_add_tail(&pCifsFile->flist, &pCifsInode->openFileList);
        spin_unlock(&cifs_file_list_lock);
 
-       if ((oplock & 0xF) == OPLOCK_EXCLUSIVE) {
-               pCifsInode->clientCanCacheAll = true;
-               pCifsInode->clientCanCacheRead = true;
-               cFYI(1, "Exclusive Oplock inode %p", inode);
-       } else if ((oplock & 0xF) == OPLOCK_READ)
-               pCifsInode->clientCanCacheRead = true;
+       cifs_set_oplock_level(inode, oplock);
 
        file->private_data = pCifsFile;
        return pCifsFile;
@@ -271,8 +261,10 @@ cifs_new_fileinfo(__u16 fileHandle, struct file *file,
  */
 void cifsFileInfo_put(struct cifsFileInfo *cifs_file)
 {
+       struct inode *inode = cifs_file->dentry->d_inode;
        struct cifsTconInfo *tcon = tlink_tcon(cifs_file->tlink);
-       struct cifsInodeInfo *cifsi = CIFS_I(cifs_file->dentry->d_inode);
+       struct cifsInodeInfo *cifsi = CIFS_I(inode);
+       struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
        struct cifsLockInfo *li, *tmp;
 
        spin_lock(&cifs_file_list_lock);
@@ -288,8 +280,7 @@ void cifsFileInfo_put(struct cifsFileInfo *cifs_file)
        if (list_empty(&cifsi->openFileList)) {
                cFYI(1, "closing last open instance for inode %p",
                        cifs_file->dentry->d_inode);
-               cifsi->clientCanCacheRead = false;
-               cifsi->clientCanCacheAll  = false;
+               cifs_set_oplock_level(inode, 0);
        }
        spin_unlock(&cifs_file_list_lock);
 
@@ -607,8 +598,6 @@ reopen_success:
                rc = filemap_write_and_wait(inode->i_mapping);
                mapping_set_error(inode->i_mapping, rc);
 
-               pCifsInode->clientCanCacheAll = false;
-               pCifsInode->clientCanCacheRead = false;
                if (tcon->unix_ext)
                        rc = cifs_get_inode_info_unix(&inode,
                                full_path, inode->i_sb, xid);
@@ -622,18 +611,9 @@ reopen_success:
             invalidate the current end of file on the server
             we can not go to the server to get the new inod
             info */
-       if ((oplock & 0xF) == OPLOCK_EXCLUSIVE) {
-               pCifsInode->clientCanCacheAll = true;
-               pCifsInode->clientCanCacheRead = true;
-               cFYI(1, "Exclusive Oplock granted on inode %p",
-                        pCifsFile->dentry->d_inode);
-       } else if ((oplock & 0xF) == OPLOCK_READ) {
-               pCifsInode->clientCanCacheRead = true;
-               pCifsInode->clientCanCacheAll = false;
-       } else {
-               pCifsInode->clientCanCacheRead = false;
-               pCifsInode->clientCanCacheAll = false;
-       }
+
+       cifs_set_oplock_level(inode, oplock);
+
        cifs_relock_file(pCifsFile);
 
 reopen_error_exit:

diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c
index c4e296fe351876252a48210f81f6cbae165562f8..d3b9ddebc17e4c0caa4d27ccba3365ed89298af2 100644 (file)
--- a/fs/cifs/misc.c
+++ b/fs/cifs/misc.c
@@ -569,10 +569,9 @@ is_valid_oplock_break(struct smb_hdr *buf, struct TCP_Server_Info *srv)
 
                                cFYI(1, "file id match, oplock break");
                                pCifsInode = CIFS_I(netfile->dentry->d_inode);
-                               pCifsInode->clientCanCacheAll = false;
-                               if (pSMB->OplockLevel == 0)
-                                       pCifsInode->clientCanCacheRead = false;
 
+                               cifs_set_oplock_level(netfile->dentry->d_inode,
+                                                     pSMB->OplockLevel);
                                /*
                                 * cifs_oplock_break_put() can't be called
                                 * from here.  Get reference after queueing
@@ -722,3 +721,21 @@ cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb)
                           cifs_sb_master_tcon(cifs_sb)->treeName);
        }
 }
+
+void cifs_set_oplock_level(struct inode *inode, __u32 oplock)
+{
+       struct cifsInodeInfo *cinode = CIFS_I(inode);
+
+       if ((oplock & 0xF) == OPLOCK_EXCLUSIVE) {
+               cinode->clientCanCacheAll = true;
+               cinode->clientCanCacheRead = true;
+               cFYI(1, "Exclusive Oplock granted on inode %p", inode);
+       } else if ((oplock & 0xF) == OPLOCK_READ) {
+               cinode->clientCanCacheAll = false;
+               cinode->clientCanCacheRead = true;
+               cFYI(1, "Level II Oplock granted on inode %p", inode);
+       } else {
+               cinode->clientCanCacheAll = false;
+               cinode->clientCanCacheRead = false;
+       }
+}