diff options
Diffstat (limited to 'fs/pipe.c')
-rw-r--r-- | fs/pipe.c | 104 |
1 files changed, 52 insertions, 52 deletions
@@ -158,7 +158,7 @@ pipe_readv(struct file *filp, const struct iovec *_iov, | |||
158 | 158 | ||
159 | do_wakeup = 0; | 159 | do_wakeup = 0; |
160 | ret = 0; | 160 | ret = 0; |
161 | mutex_lock(PIPE_MUTEX(*inode)); | 161 | mutex_lock(&inode->i_mutex); |
162 | info = inode->i_pipe; | 162 | info = inode->i_pipe; |
163 | for (;;) { | 163 | for (;;) { |
164 | int bufs = info->nrbufs; | 164 | int bufs = info->nrbufs; |
@@ -202,9 +202,9 @@ pipe_readv(struct file *filp, const struct iovec *_iov, | |||
202 | } | 202 | } |
203 | if (bufs) /* More to do? */ | 203 | if (bufs) /* More to do? */ |
204 | continue; | 204 | continue; |
205 | if (!PIPE_WRITERS(*inode)) | 205 | if (!inode->i_pipe->writers) |
206 | break; | 206 | break; |
207 | if (!PIPE_WAITING_WRITERS(*inode)) { | 207 | if (!inode->i_pipe->waiting_writers) { |
208 | /* syscall merging: Usually we must not sleep | 208 | /* syscall merging: Usually we must not sleep |
209 | * if O_NONBLOCK is set, or if we got some data. | 209 | * if O_NONBLOCK is set, or if we got some data. |
210 | * But if a writer sleeps in kernel space, then | 210 | * But if a writer sleeps in kernel space, then |
@@ -222,16 +222,16 @@ pipe_readv(struct file *filp, const struct iovec *_iov, | |||
222 | break; | 222 | break; |
223 | } | 223 | } |
224 | if (do_wakeup) { | 224 | if (do_wakeup) { |
225 | wake_up_interruptible_sync(PIPE_WAIT(*inode)); | 225 | wake_up_interruptible_sync(&inode->i_pipe->wait); |
226 | kill_fasync(PIPE_FASYNC_WRITERS(*inode), SIGIO, POLL_OUT); | 226 | kill_fasync(&inode->i_pipe->fasync_writers, SIGIO, POLL_OUT); |
227 | } | 227 | } |
228 | pipe_wait(inode->i_pipe); | 228 | pipe_wait(inode->i_pipe); |
229 | } | 229 | } |
230 | mutex_unlock(PIPE_MUTEX(*inode)); | 230 | mutex_unlock(&inode->i_mutex); |
231 | /* Signal writers asynchronously that there is more room. */ | 231 | /* Signal writers asynchronously that there is more room. */ |
232 | if (do_wakeup) { | 232 | if (do_wakeup) { |
233 | wake_up_interruptible(PIPE_WAIT(*inode)); | 233 | wake_up_interruptible(&inode->i_pipe->wait); |
234 | kill_fasync(PIPE_FASYNC_WRITERS(*inode), SIGIO, POLL_OUT); | 234 | kill_fasync(&inode->i_pipe->fasync_writers, SIGIO, POLL_OUT); |
235 | } | 235 | } |
236 | if (ret > 0) | 236 | if (ret > 0) |
237 | file_accessed(filp); | 237 | file_accessed(filp); |
@@ -264,10 +264,10 @@ pipe_writev(struct file *filp, const struct iovec *_iov, | |||
264 | 264 | ||
265 | do_wakeup = 0; | 265 | do_wakeup = 0; |
266 | ret = 0; | 266 | ret = 0; |
267 | mutex_lock(PIPE_MUTEX(*inode)); | 267 | mutex_lock(&inode->i_mutex); |
268 | info = inode->i_pipe; | 268 | info = inode->i_pipe; |
269 | 269 | ||
270 | if (!PIPE_READERS(*inode)) { | 270 | if (!inode->i_pipe->readers) { |
271 | send_sig(SIGPIPE, current, 0); | 271 | send_sig(SIGPIPE, current, 0); |
272 | ret = -EPIPE; | 272 | ret = -EPIPE; |
273 | goto out; | 273 | goto out; |
@@ -306,7 +306,7 @@ pipe_writev(struct file *filp, const struct iovec *_iov, | |||
306 | 306 | ||
307 | for (;;) { | 307 | for (;;) { |
308 | int bufs; | 308 | int bufs; |
309 | if (!PIPE_READERS(*inode)) { | 309 | if (!inode->i_pipe->readers) { |
310 | send_sig(SIGPIPE, current, 0); | 310 | send_sig(SIGPIPE, current, 0); |
311 | if (!ret) ret = -EPIPE; | 311 | if (!ret) ret = -EPIPE; |
312 | break; | 312 | break; |
@@ -367,19 +367,19 @@ pipe_writev(struct file *filp, const struct iovec *_iov, | |||
367 | break; | 367 | break; |
368 | } | 368 | } |
369 | if (do_wakeup) { | 369 | if (do_wakeup) { |
370 | wake_up_interruptible_sync(PIPE_WAIT(*inode)); | 370 | wake_up_interruptible_sync(&inode->i_pipe->wait); |
371 | kill_fasync(PIPE_FASYNC_READERS(*inode), SIGIO, POLL_IN); | 371 | kill_fasync(&inode->i_pipe->fasync_readers, SIGIO, POLL_IN); |
372 | do_wakeup = 0; | 372 | do_wakeup = 0; |
373 | } | 373 | } |
374 | PIPE_WAITING_WRITERS(*inode)++; | 374 | inode->i_pipe->waiting_writers++; |
375 | pipe_wait(inode->i_pipe); | 375 | pipe_wait(inode->i_pipe); |
376 | PIPE_WAITING_WRITERS(*inode)--; | 376 | inode->i_pipe->waiting_writers--; |
377 | } | 377 | } |
378 | out: | 378 | out: |
379 | mutex_unlock(PIPE_MUTEX(*inode)); | 379 | mutex_unlock(&inode->i_mutex); |
380 | if (do_wakeup) { | 380 | if (do_wakeup) { |
381 | wake_up_interruptible(PIPE_WAIT(*inode)); | 381 | wake_up_interruptible(&inode->i_pipe->wait); |
382 | kill_fasync(PIPE_FASYNC_READERS(*inode), SIGIO, POLL_IN); | 382 | kill_fasync(&inode->i_pipe->fasync_readers, SIGIO, POLL_IN); |
383 | } | 383 | } |
384 | if (ret > 0) | 384 | if (ret > 0) |
385 | file_update_time(filp); | 385 | file_update_time(filp); |
@@ -416,7 +416,7 @@ pipe_ioctl(struct inode *pino, struct file *filp, | |||
416 | 416 | ||
417 | switch (cmd) { | 417 | switch (cmd) { |
418 | case FIONREAD: | 418 | case FIONREAD: |
419 | mutex_lock(PIPE_MUTEX(*inode)); | 419 | mutex_lock(&inode->i_mutex); |
420 | info = inode->i_pipe; | 420 | info = inode->i_pipe; |
421 | count = 0; | 421 | count = 0; |
422 | buf = info->curbuf; | 422 | buf = info->curbuf; |
@@ -425,7 +425,7 @@ pipe_ioctl(struct inode *pino, struct file *filp, | |||
425 | count += info->bufs[buf].len; | 425 | count += info->bufs[buf].len; |
426 | buf = (buf+1) & (PIPE_BUFFERS-1); | 426 | buf = (buf+1) & (PIPE_BUFFERS-1); |
427 | } | 427 | } |
428 | mutex_unlock(PIPE_MUTEX(*inode)); | 428 | mutex_unlock(&inode->i_mutex); |
429 | return put_user(count, (int __user *)arg); | 429 | return put_user(count, (int __user *)arg); |
430 | default: | 430 | default: |
431 | return -EINVAL; | 431 | return -EINVAL; |
@@ -441,14 +441,14 @@ pipe_poll(struct file *filp, poll_table *wait) | |||
441 | struct pipe_inode_info *info = inode->i_pipe; | 441 | struct pipe_inode_info *info = inode->i_pipe; |
442 | int nrbufs; | 442 | int nrbufs; |
443 | 443 | ||
444 | poll_wait(filp, PIPE_WAIT(*inode), wait); | 444 | poll_wait(filp, &inode->i_pipe->wait, wait); |
445 | 445 | ||
446 | /* Reading only -- no need for acquiring the semaphore. */ | 446 | /* Reading only -- no need for acquiring the semaphore. */ |
447 | nrbufs = info->nrbufs; | 447 | nrbufs = info->nrbufs; |
448 | mask = 0; | 448 | mask = 0; |
449 | if (filp->f_mode & FMODE_READ) { | 449 | if (filp->f_mode & FMODE_READ) { |
450 | mask = (nrbufs > 0) ? POLLIN | POLLRDNORM : 0; | 450 | mask = (nrbufs > 0) ? POLLIN | POLLRDNORM : 0; |
451 | if (!PIPE_WRITERS(*inode) && filp->f_version != PIPE_WCOUNTER(*inode)) | 451 | if (!inode->i_pipe->writers && filp->f_version != inode->i_pipe->w_counter) |
452 | mask |= POLLHUP; | 452 | mask |= POLLHUP; |
453 | } | 453 | } |
454 | 454 | ||
@@ -458,7 +458,7 @@ pipe_poll(struct file *filp, poll_table *wait) | |||
458 | * Most Unices do not set POLLERR for FIFOs but on Linux they | 458 | * Most Unices do not set POLLERR for FIFOs but on Linux they |
459 | * behave exactly like pipes for poll(). | 459 | * behave exactly like pipes for poll(). |
460 | */ | 460 | */ |
461 | if (!PIPE_READERS(*inode)) | 461 | if (!inode->i_pipe->readers) |
462 | mask |= POLLERR; | 462 | mask |= POLLERR; |
463 | } | 463 | } |
464 | 464 | ||
@@ -468,17 +468,17 @@ pipe_poll(struct file *filp, poll_table *wait) | |||
468 | static int | 468 | static int |
469 | pipe_release(struct inode *inode, int decr, int decw) | 469 | pipe_release(struct inode *inode, int decr, int decw) |
470 | { | 470 | { |
471 | mutex_lock(PIPE_MUTEX(*inode)); | 471 | mutex_lock(&inode->i_mutex); |
472 | PIPE_READERS(*inode) -= decr; | 472 | inode->i_pipe->readers -= decr; |
473 | PIPE_WRITERS(*inode) -= decw; | 473 | inode->i_pipe->writers -= decw; |
474 | if (!PIPE_READERS(*inode) && !PIPE_WRITERS(*inode)) { | 474 | if (!inode->i_pipe->readers && !inode->i_pipe->writers) { |
475 | free_pipe_info(inode); | 475 | free_pipe_info(inode); |
476 | } else { | 476 | } else { |
477 | wake_up_interruptible(PIPE_WAIT(*inode)); | 477 | wake_up_interruptible(&inode->i_pipe->wait); |
478 | kill_fasync(PIPE_FASYNC_READERS(*inode), SIGIO, POLL_IN); | 478 | kill_fasync(&inode->i_pipe->fasync_readers, SIGIO, POLL_IN); |
479 | kill_fasync(PIPE_FASYNC_WRITERS(*inode), SIGIO, POLL_OUT); | 479 | kill_fasync(&inode->i_pipe->fasync_writers, SIGIO, POLL_OUT); |
480 | } | 480 | } |
481 | mutex_unlock(PIPE_MUTEX(*inode)); | 481 | mutex_unlock(&inode->i_mutex); |
482 | 482 | ||
483 | return 0; | 483 | return 0; |
484 | } | 484 | } |
@@ -489,9 +489,9 @@ pipe_read_fasync(int fd, struct file *filp, int on) | |||
489 | struct inode *inode = filp->f_dentry->d_inode; | 489 | struct inode *inode = filp->f_dentry->d_inode; |
490 | int retval; | 490 | int retval; |
491 | 491 | ||
492 | mutex_lock(PIPE_MUTEX(*inode)); | 492 | mutex_lock(&inode->i_mutex); |
493 | retval = fasync_helper(fd, filp, on, PIPE_FASYNC_READERS(*inode)); | 493 | retval = fasync_helper(fd, filp, on, &inode->i_pipe->fasync_readers); |
494 | mutex_unlock(PIPE_MUTEX(*inode)); | 494 | mutex_unlock(&inode->i_mutex); |
495 | 495 | ||
496 | if (retval < 0) | 496 | if (retval < 0) |
497 | return retval; | 497 | return retval; |
@@ -506,9 +506,9 @@ pipe_write_fasync(int fd, struct file *filp, int on) | |||
506 | struct inode *inode = filp->f_dentry->d_inode; | 506 | struct inode *inode = filp->f_dentry->d_inode; |
507 | int retval; | 507 | int retval; |
508 | 508 | ||
509 | mutex_lock(PIPE_MUTEX(*inode)); | 509 | mutex_lock(&inode->i_mutex); |
510 | retval = fasync_helper(fd, filp, on, PIPE_FASYNC_WRITERS(*inode)); | 510 | retval = fasync_helper(fd, filp, on, &inode->i_pipe->fasync_writers); |
511 | mutex_unlock(PIPE_MUTEX(*inode)); | 511 | mutex_unlock(&inode->i_mutex); |
512 | 512 | ||
513 | if (retval < 0) | 513 | if (retval < 0) |
514 | return retval; | 514 | return retval; |
@@ -523,14 +523,14 @@ pipe_rdwr_fasync(int fd, struct file *filp, int on) | |||
523 | struct inode *inode = filp->f_dentry->d_inode; | 523 | struct inode *inode = filp->f_dentry->d_inode; |
524 | int retval; | 524 | int retval; |
525 | 525 | ||
526 | mutex_lock(PIPE_MUTEX(*inode)); | 526 | mutex_lock(&inode->i_mutex); |
527 | 527 | ||
528 | retval = fasync_helper(fd, filp, on, PIPE_FASYNC_READERS(*inode)); | 528 | retval = fasync_helper(fd, filp, on, &inode->i_pipe->fasync_readers); |
529 | 529 | ||
530 | if (retval >= 0) | 530 | if (retval >= 0) |
531 | retval = fasync_helper(fd, filp, on, PIPE_FASYNC_WRITERS(*inode)); | 531 | retval = fasync_helper(fd, filp, on, &inode->i_pipe->fasync_writers); |
532 | 532 | ||
533 | mutex_unlock(PIPE_MUTEX(*inode)); | 533 | mutex_unlock(&inode->i_mutex); |
534 | 534 | ||
535 | if (retval < 0) | 535 | if (retval < 0) |
536 | return retval; | 536 | return retval; |
@@ -569,9 +569,9 @@ pipe_read_open(struct inode *inode, struct file *filp) | |||
569 | { | 569 | { |
570 | /* We could have perhaps used atomic_t, but this and friends | 570 | /* We could have perhaps used atomic_t, but this and friends |
571 | below are the only places. So it doesn't seem worthwhile. */ | 571 | below are the only places. So it doesn't seem worthwhile. */ |
572 | mutex_lock(PIPE_MUTEX(*inode)); | 572 | mutex_lock(&inode->i_mutex); |
573 | PIPE_READERS(*inode)++; | 573 | inode->i_pipe->readers++; |
574 | mutex_unlock(PIPE_MUTEX(*inode)); | 574 | mutex_unlock(&inode->i_mutex); |
575 | 575 | ||
576 | return 0; | 576 | return 0; |
577 | } | 577 | } |
@@ -579,9 +579,9 @@ pipe_read_open(struct inode *inode, struct file *filp) | |||
579 | static int | 579 | static int |
580 | pipe_write_open(struct inode *inode, struct file *filp) | 580 | pipe_write_open(struct inode *inode, struct file *filp) |
581 | { | 581 | { |
582 | mutex_lock(PIPE_MUTEX(*inode)); | 582 | mutex_lock(&inode->i_mutex); |
583 | PIPE_WRITERS(*inode)++; | 583 | inode->i_pipe->writers++; |
584 | mutex_unlock(PIPE_MUTEX(*inode)); | 584 | mutex_unlock(&inode->i_mutex); |
585 | 585 | ||
586 | return 0; | 586 | return 0; |
587 | } | 587 | } |
@@ -589,12 +589,12 @@ pipe_write_open(struct inode *inode, struct file *filp) | |||
589 | static int | 589 | static int |
590 | pipe_rdwr_open(struct inode *inode, struct file *filp) | 590 | pipe_rdwr_open(struct inode *inode, struct file *filp) |
591 | { | 591 | { |
592 | mutex_lock(PIPE_MUTEX(*inode)); | 592 | mutex_lock(&inode->i_mutex); |
593 | if (filp->f_mode & FMODE_READ) | 593 | if (filp->f_mode & FMODE_READ) |
594 | PIPE_READERS(*inode)++; | 594 | inode->i_pipe->readers++; |
595 | if (filp->f_mode & FMODE_WRITE) | 595 | if (filp->f_mode & FMODE_WRITE) |
596 | PIPE_WRITERS(*inode)++; | 596 | inode->i_pipe->writers++; |
597 | mutex_unlock(PIPE_MUTEX(*inode)); | 597 | mutex_unlock(&inode->i_mutex); |
598 | 598 | ||
599 | return 0; | 599 | return 0; |
600 | } | 600 | } |
@@ -731,7 +731,7 @@ static struct inode * get_pipe_inode(void) | |||
731 | if (!inode->i_pipe) | 731 | if (!inode->i_pipe) |
732 | goto fail_iput; | 732 | goto fail_iput; |
733 | 733 | ||
734 | PIPE_READERS(*inode) = PIPE_WRITERS(*inode) = 1; | 734 | inode->i_pipe->readers = inode->i_pipe->writers = 1; |
735 | inode->i_fop = &rdwr_pipe_fops; | 735 | inode->i_fop = &rdwr_pipe_fops; |
736 | 736 | ||
737 | /* | 737 | /* |