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-rw-r--r--fs/cifs/misc.c59
1 files changed, 34 insertions, 25 deletions
diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c
index 3ccadc1..43f1028 100644
--- a/fs/cifs/misc.c
+++ b/fs/cifs/misc.c
@@ -347,7 +347,7 @@ header_assemble(struct smb_hdr *buffer, char smb_command /* command */ ,
if (current_fsuid() != treeCon->ses->linux_uid) {
cFYI(1, "Multiuser mode and UID "
"did not match tcon uid");
- read_lock(&cifs_tcp_ses_lock);
+ spin_lock(&cifs_tcp_ses_lock);
list_for_each(temp_item, &treeCon->ses->server->smb_ses_list) {
ses = list_entry(temp_item, struct cifsSesInfo, smb_ses_list);
if (ses->linux_uid == current_fsuid()) {
@@ -361,7 +361,7 @@ header_assemble(struct smb_hdr *buffer, char smb_command /* command */ ,
}
}
}
- read_unlock(&cifs_tcp_ses_lock);
+ spin_unlock(&cifs_tcp_ses_lock);
}
}
}
@@ -551,7 +551,7 @@ is_valid_oplock_break(struct smb_hdr *buf, struct TCP_Server_Info *srv)
return false;
/* look up tcon based on tid & uid */
- read_lock(&cifs_tcp_ses_lock);
+ spin_lock(&cifs_tcp_ses_lock);
list_for_each(tmp, &srv->smb_ses_list) {
ses = list_entry(tmp, struct cifsSesInfo, smb_ses_list);
list_for_each(tmp1, &ses->tcon_list) {
@@ -560,51 +560,40 @@ is_valid_oplock_break(struct smb_hdr *buf, struct TCP_Server_Info *srv)
continue;
cifs_stats_inc(&tcon->num_oplock_brks);
- read_lock(&GlobalSMBSeslock);
+ spin_lock(&cifs_file_list_lock);
list_for_each(tmp2, &tcon->openFileList) {
netfile = list_entry(tmp2, struct cifsFileInfo,
tlist);
if (pSMB->Fid != netfile->netfid)
continue;
- /*
- * don't do anything if file is about to be
- * closed anyway.
- */
- if (netfile->closePend) {
- read_unlock(&GlobalSMBSeslock);
- read_unlock(&cifs_tcp_ses_lock);
- return true;
- }
-
cFYI(1, "file id match, oplock break");
- pCifsInode = CIFS_I(netfile->pInode);
- pCifsInode->clientCanCacheAll = false;
- if (pSMB->OplockLevel == 0)
- pCifsInode->clientCanCacheRead = false;
+ pCifsInode = CIFS_I(netfile->dentry->d_inode);
+ cifs_set_oplock_level(pCifsInode,
+ pSMB->OplockLevel);
/*
* cifs_oplock_break_put() can't be called
* from here. Get reference after queueing
* succeeded. cifs_oplock_break() will
- * synchronize using GlobalSMSSeslock.
+ * synchronize using cifs_file_list_lock.
*/
if (queue_work(system_nrt_wq,
&netfile->oplock_break))
cifs_oplock_break_get(netfile);
netfile->oplock_break_cancelled = false;
- read_unlock(&GlobalSMBSeslock);
- read_unlock(&cifs_tcp_ses_lock);
+ spin_unlock(&cifs_file_list_lock);
+ spin_unlock(&cifs_tcp_ses_lock);
return true;
}
- read_unlock(&GlobalSMBSeslock);
- read_unlock(&cifs_tcp_ses_lock);
+ spin_unlock(&cifs_file_list_lock);
+ spin_unlock(&cifs_tcp_ses_lock);
cFYI(1, "No matching file for oplock break");
return true;
}
}
- read_unlock(&cifs_tcp_ses_lock);
+ spin_unlock(&cifs_tcp_ses_lock);
cFYI(1, "Can not process oplock break for non-existent connection");
return true;
}
@@ -729,6 +718,26 @@ cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb)
"properly. Hardlinks will not be recognized on this "
"mount. Consider mounting with the \"noserverino\" "
"option to silence this message.",
- cifs_sb->tcon->treeName);
+ cifs_sb_master_tcon(cifs_sb)->treeName);
+ }
+}
+
+void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock)
+{
+ oplock &= 0xF;
+
+ if (oplock == OPLOCK_EXCLUSIVE) {
+ cinode->clientCanCacheAll = true;
+ cinode->clientCanCacheRead = true;
+ cFYI(1, "Exclusive Oplock granted on inode %p",
+ &cinode->vfs_inode);
+ } else if (oplock == OPLOCK_READ) {
+ cinode->clientCanCacheAll = false;
+ cinode->clientCanCacheRead = true;
+ cFYI(1, "Level II Oplock granted on inode %p",
+ &cinode->vfs_inode);
+ } else {
+ cinode->clientCanCacheAll = false;
+ cinode->clientCanCacheRead = false;
}
}
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