Merge branch 'topic/acpi' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi into spi-pxa2xx

1 files changed, 11 insertions, 5 deletions

diff --git a/fs/splice.c b/fs/splice.c
index 801c21cd77fe..82bc0d64fc38 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -415,6 +415,7 @@ __generic_file_splice_read(struct file *in, loff_t *ppos,
 			 */
 			if (!page->mapping) {
 				unlock_page(page);
+retry_lookup:
 				page = find_or_create_page(mapping, index,
 						mapping_gfp_mask(mapping));
 
@@ -439,13 +440,10 @@ __generic_file_splice_read(struct file *in, loff_t *ppos,
 			error = mapping->a_ops->readpage(in, page);
 			if (unlikely(error)) {
 				/*
-				 * We really should re-lookup the page here,
-				 * but it complicates things a lot. Instead
-				 * lets just do what we already stored, and
-				 * we'll get it the next time we are called.
+				 * Re-lookup the page
 				 */
 				if (error == AOP_TRUNCATED_PAGE)
-					error = 0;
+					goto retry_lookup;
 
 				break;
 			}
@@ -809,6 +807,13 @@ static int splice_from_pipe_feed(struct pipe_inode_info *pipe, struct splice_des
  */
 static int splice_from_pipe_next(struct pipe_inode_info *pipe, struct splice_desc *sd)
 {
+	/*
+	 * Check for signal early to make process killable when there are
+	 * always buffers available
+	 */
+	if (signal_pending(current))
+		return -ERESTARTSYS;
+
 	while (!pipe->nrbufs) {
 		if (!pipe->writers)
 			return 0;
@@ -884,6 +889,7 @@ ssize_t __splice_from_pipe(struct pipe_inode_info *pipe, struct splice_desc *sd,
 
 	splice_from_pipe_begin(sd);
 	do {
+		cond_resched();
 		ret = splice_from_pipe_next(pipe, sd);
 		if (ret > 0)
 			ret = splice_from_pipe_feed(pipe, sd, actor);