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-rw-r--r--fs/cifs/file.c34
1 files changed, 20 insertions, 14 deletions
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 5c497c5..e152bf6 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -203,9 +203,7 @@ int cifs_open(struct inode *inode, struct file *file)
}
}
- mutex_lock(&inode->i_sb->s_vfs_rename_mutex);
full_path = build_path_from_dentry(file->f_dentry);
- mutex_unlock(&inode->i_sb->s_vfs_rename_mutex);
if (full_path == NULL) {
FreeXid(xid);
return -ENOMEM;
@@ -906,8 +904,7 @@ static ssize_t cifs_write(struct file *file, const char *write_data,
if (rc != 0)
break;
}
- /* BB FIXME We can not sign across two buffers yet */
- if((pTcon->ses->server->secMode &
+ if(experimEnabled || (pTcon->ses->server->secMode &
(SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) == 0) {
struct kvec iov[2];
unsigned int len;
@@ -923,13 +920,13 @@ static ssize_t cifs_write(struct file *file, const char *write_data,
*poffset, &bytes_written,
iov, 1, long_op);
} else
- /* BB FIXME fixup indentation of line below */
- rc = CIFSSMBWrite(xid, pTcon,
- open_file->netfid,
- min_t(const int, cifs_sb->wsize,
- write_size - total_written),
- *poffset, &bytes_written,
- write_data + total_written, NULL, long_op);
+ rc = CIFSSMBWrite(xid, pTcon,
+ open_file->netfid,
+ min_t(const int, cifs_sb->wsize,
+ write_size - total_written),
+ *poffset, &bytes_written,
+ write_data + total_written,
+ NULL, long_op);
}
if (rc || (bytes_written == 0)) {
if (total_written)
@@ -968,6 +965,16 @@ struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *cifs_inode)
struct cifsFileInfo *open_file;
int rc;
+ /* Having a null inode here (because mapping->host was set to zero by
+ the VFS or MM) should not happen but we had reports of on oops (due to
+ it being zero) during stress testcases so we need to check for it */
+
+ if(cifs_inode == NULL) {
+ cERROR(1,("Null inode passed to cifs_writeable_file"));
+ dump_stack();
+ return NULL;
+ }
+
read_lock(&GlobalSMBSeslock);
list_for_each_entry(open_file, &cifs_inode->openFileList, flist) {
if (open_file->closePend)
@@ -1093,12 +1100,11 @@ static int cifs_writepages(struct address_space *mapping,
if (cifs_sb->wsize < PAGE_CACHE_SIZE)
return generic_writepages(mapping, wbc);
- /* BB FIXME we do not have code to sign across multiple buffers yet,
- so go to older writepage style write which we can sign if needed */
if((cifs_sb->tcon->ses) && (cifs_sb->tcon->ses->server))
if(cifs_sb->tcon->ses->server->secMode &
(SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
- return generic_writepages(mapping, wbc);
+ if(!experimEnabled)
+ return generic_writepages(mapping, wbc);
/*
* BB: Is this meaningful for a non-block-device file system?
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