1 files changed, 25 insertions, 5 deletions

diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c
index aba3fc3..53e8362c 100644
--- a/fs/cifs/misc.c
+++ b/fs/cifs/misc.c
@@ -82,6 +82,7 @@ sesInfoAlloc(void)
 		INIT_LIST_HEAD(&ret_buf->smb_ses_list);
 		INIT_LIST_HEAD(&ret_buf->tcon_list);
 		mutex_init(&ret_buf->session_mutex);
+		spin_lock_init(&ret_buf->iface_lock);
 	}
 	return ret_buf;
 }
@@ -102,6 +103,7 @@ sesInfoFree(struct cifs_ses *buf_to_free)
 	kfree(buf_to_free->user_name);
 	kfree(buf_to_free->domainName);
 	kzfree(buf_to_free->auth_key.response);
+	kfree(buf_to_free->iface_list);
 	kzfree(buf_to_free);
 }
 
@@ -117,8 +119,9 @@ tconInfoAlloc(void)
 		INIT_LIST_HEAD(&ret_buf->openFileList);
 		INIT_LIST_HEAD(&ret_buf->tcon_list);
 		spin_lock_init(&ret_buf->open_file_lock);
-		mutex_init(&ret_buf->prfid_mutex);
-		ret_buf->prfid = kzalloc(sizeof(struct cifs_fid), GFP_KERNEL);
+		mutex_init(&ret_buf->crfid.fid_mutex);
+		ret_buf->crfid.fid = kzalloc(sizeof(struct cifs_fid),
+					     GFP_KERNEL);
 #ifdef CONFIG_CIFS_STATS
 		spin_lock_init(&ret_buf->stat_lock);
 #endif
@@ -136,7 +139,7 @@ tconInfoFree(struct cifs_tcon *buf_to_free)
 	atomic_dec(&tconInfoAllocCount);
 	kfree(buf_to_free->nativeFileSystem);
 	kzfree(buf_to_free->password);
-	kfree(buf_to_free->prfid);
+	kfree(buf_to_free->crfid.fid);
 	kfree(buf_to_free);
 }
 
@@ -789,7 +792,7 @@ setup_aio_ctx_iter(struct cifs_aio_ctx *ctx, struct iov_iter *iter, int rw)
 				   GFP_KERNEL);
 
 	if (!bv) {
-		bv = vmalloc(max_pages * sizeof(struct bio_vec));
+		bv = vmalloc(array_size(max_pages, sizeof(struct bio_vec)));
 		if (!bv)
 			return -ENOMEM;
 	}
@@ -799,7 +802,7 @@ setup_aio_ctx_iter(struct cifs_aio_ctx *ctx, struct iov_iter *iter, int rw)
 				      GFP_KERNEL);
 
 	if (!pages) {
-		pages = vmalloc(max_pages * sizeof(struct page *));
+		pages = vmalloc(array_size(max_pages, sizeof(struct page *)));
 		if (!pages) {
 			kvfree(bv);
 			return -ENOMEM;
@@ -905,3 +908,20 @@ cifs_free_hash(struct crypto_shash **shash, struct sdesc **sdesc)
 		crypto_free_shash(*shash);
 	*shash = NULL;
 }
+
+/**
+ * rqst_page_get_length - obtain the length and offset for a page in smb_rqst
+ * Input: rqst - a smb_rqst, page - a page index for rqst
+ * Output: *len - the length for this page, *offset - the offset for this page
+ */
+void rqst_page_get_length(struct smb_rqst *rqst, unsigned int page,
+				unsigned int *len, unsigned int *offset)
+{
+	*len = rqst->rq_pagesz;
+	*offset = (page == 0) ? rqst->rq_offset : 0;
+
+	if (rqst->rq_npages == 1 || page == rqst->rq_npages-1)
+		*len = rqst->rq_tailsz;
+	else if (page == 0)
+		*len = rqst->rq_pagesz - rqst->rq_offset;
+}