From: Pavel Shilovsky <pshilovsky@samba.org>
Date: Thu, 10 Jul 2014 06:16:25 +0000 (+0400)
Subject: CIFS: Count got bytes in read_into_pages()
X-Git-Tag: firefly_0821_release~176^2~3427^2~10
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=b3160aebb49b5e07f6bc3b8c5bed6013ca9e422e;p=firefly-linux-kernel-4.4.55.git

CIFS: Count got bytes in read_into_pages()

that let us know how many bytes we have already got before reconnect.

Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org>
Signed-off-by: Steve French <smfrench@gmail.com>
---

diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 1781a03aed5e..57d447c56d83 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -1513,7 +1513,6 @@ cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid)
 		return length;
 
 	server->total_read += length;
-	rdata->got_bytes = length;
 
 	cifs_dbg(FYI, "total_read=%u buflen=%u remaining=%u\n",
 		 server->total_read, buflen, data_len);
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 3d5d48838519..3ea6fc86a471 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -2868,11 +2868,12 @@ static int
 cifs_uncached_read_into_pages(struct TCP_Server_Info *server,
 			struct cifs_readdata *rdata, unsigned int len)
 {
-	int total_read = 0, result = 0;
+	int result = 0;
 	unsigned int i;
 	unsigned int nr_pages = rdata->nr_pages;
 	struct kvec iov;
 
+	rdata->got_bytes = 0;
 	rdata->tailsz = PAGE_SIZE;
 	for (i = 0; i < nr_pages; i++) {
 		struct page *page = rdata->pages[i];
@@ -2906,10 +2907,11 @@ cifs_uncached_read_into_pages(struct TCP_Server_Info *server,
 		if (result < 0)
 			break;
 
-		total_read += result;
+		rdata->got_bytes += result;
 	}
 
-	return total_read > 0 && result != -ECONNABORTED ? total_read : result;
+	return rdata->got_bytes > 0 && result != -ECONNABORTED ?
+						rdata->got_bytes : result;
 }
 
 static int
@@ -3290,7 +3292,7 @@ static int
 cifs_readpages_read_into_pages(struct TCP_Server_Info *server,
 			struct cifs_readdata *rdata, unsigned int len)
 {
-	int total_read = 0, result = 0;
+	int result = 0;
 	unsigned int i;
 	u64 eof;
 	pgoff_t eof_index;
@@ -3302,6 +3304,7 @@ cifs_readpages_read_into_pages(struct TCP_Server_Info *server,
 	eof_index = eof ? (eof - 1) >> PAGE_CACHE_SHIFT : 0;
 	cifs_dbg(FYI, "eof=%llu eof_index=%lu\n", eof, eof_index);
 
+	rdata->got_bytes = 0;
 	rdata->tailsz = PAGE_CACHE_SIZE;
 	for (i = 0; i < nr_pages; i++) {
 		struct page *page = rdata->pages[i];
@@ -3356,10 +3359,11 @@ cifs_readpages_read_into_pages(struct TCP_Server_Info *server,
 		if (result < 0)
 			break;
 
-		total_read += result;
+		rdata->got_bytes += result;
 	}
 
-	return total_read > 0 && result != -ECONNABORTED ? total_read : result;
+	return rdata->got_bytes > 0 && result != -ECONNABORTED ?
+						rdata->got_bytes : result;
 }
 
 static int