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-rw-r--r--fs/splice.c31
1 files changed, 6 insertions, 25 deletions
diff --git a/fs/splice.c b/fs/splice.c
index a861bb318ac8..eeb1a86a7014 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -370,8 +370,10 @@ __generic_file_splice_read(struct file *in, loff_t *ppos,
370 * for an in-flight io page 370 * for an in-flight io page
371 */ 371 */
372 if (flags & SPLICE_F_NONBLOCK) { 372 if (flags & SPLICE_F_NONBLOCK) {
373 if (TestSetPageLocked(page)) 373 if (TestSetPageLocked(page)) {
374 error = -EAGAIN;
374 break; 375 break;
376 }
375 } else 377 } else
376 lock_page(page); 378 lock_page(page);
377 379
@@ -479,9 +481,8 @@ ssize_t generic_file_splice_read(struct file *in, loff_t *ppos,
479 struct pipe_inode_info *pipe, size_t len, 481 struct pipe_inode_info *pipe, size_t len,
480 unsigned int flags) 482 unsigned int flags)
481{ 483{
482 ssize_t spliced;
483 int ret;
484 loff_t isize, left; 484 loff_t isize, left;
485 int ret;
485 486
486 isize = i_size_read(in->f_mapping->host); 487 isize = i_size_read(in->f_mapping->host);
487 if (unlikely(*ppos >= isize)) 488 if (unlikely(*ppos >= isize))
@@ -491,29 +492,9 @@ ssize_t generic_file_splice_read(struct file *in, loff_t *ppos,
491 if (unlikely(left < len)) 492 if (unlikely(left < len))
492 len = left; 493 len = left;
493 494
494 ret = 0; 495 ret = __generic_file_splice_read(in, ppos, pipe, len, flags);
495 spliced = 0; 496 if (ret > 0)
496 while (len && !spliced) {
497 ret = __generic_file_splice_read(in, ppos, pipe, len, flags);
498
499 if (ret < 0)
500 break;
501 else if (!ret) {
502 if (spliced)
503 break;
504 if (flags & SPLICE_F_NONBLOCK) {
505 ret = -EAGAIN;
506 break;
507 }
508 }
509
510 *ppos += ret; 497 *ppos += ret;
511 len -= ret;
512 spliced += ret;
513 }
514
515 if (spliced)
516 return spliced;
517 498
518 return ret; 499 return ret;
519} 500}