diff options
Diffstat (limited to 'drivers/block/drbd/drbd_main.c')
-rw-r--r-- | drivers/block/drbd/drbd_main.c | 26 |
1 files changed, 15 insertions, 11 deletions
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c index 83987e7a5ef2..79ab532aabaf 100644 --- a/drivers/block/drbd/drbd_main.c +++ b/drivers/block/drbd/drbd_main.c @@ -37,7 +37,6 @@ #include <linux/notifier.h> #include <linux/kthread.h> #include <linux/workqueue.h> -#define __KERNEL_SYSCALLS__ #include <linux/unistd.h> #include <linux/vmalloc.h> #include <linux/sched/signal.h> @@ -50,8 +49,8 @@ #include "drbd_debugfs.h" static DEFINE_MUTEX(drbd_main_mutex); -static int drbd_open(struct block_device *bdev, fmode_t mode); -static void drbd_release(struct gendisk *gd, fmode_t mode); +static int drbd_open(struct gendisk *disk, blk_mode_t mode); +static void drbd_release(struct gendisk *gd); static void md_sync_timer_fn(struct timer_list *t); static int w_bitmap_io(struct drbd_work *w, int unused); @@ -1540,6 +1539,8 @@ static int _drbd_send_page(struct drbd_peer_device *peer_device, struct page *pa int offset, size_t size, unsigned msg_flags) { struct socket *socket = peer_device->connection->data.socket; + struct msghdr msg = { .msg_flags = msg_flags, }; + struct bio_vec bvec; int len = size; int err = -EIO; @@ -1549,15 +1550,17 @@ static int _drbd_send_page(struct drbd_peer_device *peer_device, struct page *pa * put_page(); and would cause either a VM_BUG directly, or * __page_cache_release a page that would actually still be referenced * by someone, leading to some obscure delayed Oops somewhere else. */ - if (drbd_disable_sendpage || !sendpage_ok(page)) - return _drbd_no_send_page(peer_device, page, offset, size, msg_flags); + if (!drbd_disable_sendpage && sendpage_ok(page)) + msg.msg_flags |= MSG_NOSIGNAL | MSG_SPLICE_PAGES; - msg_flags |= MSG_NOSIGNAL; drbd_update_congested(peer_device->connection); do { int sent; - sent = socket->ops->sendpage(socket, page, offset, len, msg_flags); + bvec_set_page(&bvec, page, offset, len); + iov_iter_bvec(&msg.msg_iter, ITER_SOURCE, &bvec, 1, len); + + sent = sock_sendmsg(socket, &msg); if (sent <= 0) { if (sent == -EAGAIN) { if (we_should_drop_the_connection(peer_device->connection, socket)) @@ -1883,9 +1886,9 @@ int drbd_send_all(struct drbd_connection *connection, struct socket *sock, void return 0; } -static int drbd_open(struct block_device *bdev, fmode_t mode) +static int drbd_open(struct gendisk *disk, blk_mode_t mode) { - struct drbd_device *device = bdev->bd_disk->private_data; + struct drbd_device *device = disk->private_data; unsigned long flags; int rv = 0; @@ -1895,7 +1898,7 @@ static int drbd_open(struct block_device *bdev, fmode_t mode) * and no race with updating open_cnt */ if (device->state.role != R_PRIMARY) { - if (mode & FMODE_WRITE) + if (mode & BLK_OPEN_WRITE) rv = -EROFS; else if (!drbd_allow_oos) rv = -EMEDIUMTYPE; @@ -1909,9 +1912,10 @@ static int drbd_open(struct block_device *bdev, fmode_t mode) return rv; } -static void drbd_release(struct gendisk *gd, fmode_t mode) +static void drbd_release(struct gendisk *gd) { struct drbd_device *device = gd->private_data; + mutex_lock(&drbd_main_mutex); device->open_cnt--; mutex_unlock(&drbd_main_mutex); |