X-Git-Url: https://bbs.cooldavid.org/git/?a=blobdiff_plain;f=fs%2Fsplice.c;h=8f1dfaecc8f06125429d3bc66b052d779f61f446;hb=HEAD;hp=efdbfece9932021920ece0a13789260173c8d027;hpb=ffd386a9a8273dcfa61705d0b349eebc7525ef87;p=net-next-2.6.git

diff --git a/fs/splice.c b/fs/splice.c
index efdbfece993..8f1dfaecc8f 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -399,17 +399,7 @@ __generic_file_splice_read(struct file *in, loff_t *ppos,
 		 * If the page isn't uptodate, we may need to start io on it
 		 */
 		if (!PageUptodate(page)) {
-			/*
-			 * If in nonblock mode then dont block on waiting
-			 * for an in-flight io page
-			 */
-			if (flags & SPLICE_F_NONBLOCK) {
-				if (!trylock_page(page)) {
-					error = -EAGAIN;
-					break;
-				}
-			} else
-				lock_page(page);
+			lock_page(page);
 
 			/*
 			 * Page was truncated, or invalidated by the
@@ -597,7 +587,6 @@ ssize_t default_file_splice_read(struct file *in, loff_t *ppos,
 	struct page *pages[PIPE_DEF_BUFFERS];
 	struct partial_page partial[PIPE_DEF_BUFFERS];
 	struct iovec *vec, __vec[PIPE_DEF_BUFFERS];
-	pgoff_t index;
 	ssize_t res;
 	size_t this_len;
 	int error;
@@ -621,7 +610,6 @@ ssize_t default_file_splice_read(struct file *in, loff_t *ppos,
 			goto shrink_ret;
 	}
 
-	index = *ppos >> PAGE_CACHE_SHIFT;
 	offset = *ppos & ~PAGE_CACHE_MASK;
 	nr_pages = (len + offset + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;