diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/block_dev.c | 8 | ||||
| -rw-r--r-- | fs/dax.c | 3 | ||||
| -rw-r--r-- | fs/eventpoll.c | 38 | ||||
| -rw-r--r-- | fs/ocfs2/dlm/dlmrecovery.c | 2 |
4 files changed, 43 insertions, 8 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c index afb437484362..39b3a174a425 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -1730,6 +1730,12 @@ static int blkdev_dax_fault(struct vm_area_struct *vma, struct vm_fault *vmf) return __dax_fault(vma, vmf, blkdev_get_block, NULL); } +static int blkdev_dax_pfn_mkwrite(struct vm_area_struct *vma, + struct vm_fault *vmf) +{ + return dax_pfn_mkwrite(vma, vmf); +} + static int blkdev_dax_pmd_fault(struct vm_area_struct *vma, unsigned long addr, pmd_t *pmd, unsigned int flags) { @@ -1739,7 +1745,7 @@ static int blkdev_dax_pmd_fault(struct vm_area_struct *vma, unsigned long addr, static const struct vm_operations_struct blkdev_dax_vm_ops = { .fault = blkdev_dax_fault, .pmd_fault = blkdev_dax_pmd_fault, - .pfn_mkwrite = blkdev_dax_fault, + .pfn_mkwrite = blkdev_dax_pfn_mkwrite, }; static const struct vm_operations_struct blkdev_default_vm_ops = { @@ -358,7 +358,8 @@ static int dax_radix_entry(struct address_space *mapping, pgoff_t index, void *entry; WARN_ON_ONCE(pmd_entry && !dirty); - __mark_inode_dirty(mapping->host, I_DIRTY_PAGES); + if (dirty) + __mark_inode_dirty(mapping->host, I_DIRTY_PAGES); spin_lock_irq(&mapping->tree_lock); diff --git a/fs/eventpoll.c b/fs/eventpoll.c index ae1dbcf47e97..cde60741cad2 100644 --- a/fs/eventpoll.c +++ b/fs/eventpoll.c @@ -94,6 +94,11 @@ /* Epoll private bits inside the event mask */ #define EP_PRIVATE_BITS (EPOLLWAKEUP | EPOLLONESHOT | EPOLLET | EPOLLEXCLUSIVE) +#define EPOLLINOUT_BITS (POLLIN | POLLOUT) + +#define EPOLLEXCLUSIVE_OK_BITS (EPOLLINOUT_BITS | POLLERR | POLLHUP | \ + EPOLLWAKEUP | EPOLLET | EPOLLEXCLUSIVE) + /* Maximum number of nesting allowed inside epoll sets */ #define EP_MAX_NESTS 4 @@ -1068,7 +1073,22 @@ static int ep_poll_callback(wait_queue_t *wait, unsigned mode, int sync, void *k * wait list. */ if (waitqueue_active(&ep->wq)) { - ewake = 1; + if ((epi->event.events & EPOLLEXCLUSIVE) && + !((unsigned long)key & POLLFREE)) { + switch ((unsigned long)key & EPOLLINOUT_BITS) { + case POLLIN: + if (epi->event.events & POLLIN) + ewake = 1; + break; + case POLLOUT: + if (epi->event.events & POLLOUT) + ewake = 1; + break; + case 0: + ewake = 1; + break; + } + } wake_up_locked(&ep->wq); } if (waitqueue_active(&ep->poll_wait)) @@ -1875,9 +1895,13 @@ SYSCALL_DEFINE4(epoll_ctl, int, epfd, int, op, int, fd, * so EPOLLEXCLUSIVE is not allowed for a EPOLL_CTL_MOD operation. * Also, we do not currently supported nested exclusive wakeups. */ - if ((epds.events & EPOLLEXCLUSIVE) && (op == EPOLL_CTL_MOD || - (op == EPOLL_CTL_ADD && is_file_epoll(tf.file)))) - goto error_tgt_fput; + if (epds.events & EPOLLEXCLUSIVE) { + if (op == EPOLL_CTL_MOD) + goto error_tgt_fput; + if (op == EPOLL_CTL_ADD && (is_file_epoll(tf.file) || + (epds.events & ~EPOLLEXCLUSIVE_OK_BITS))) + goto error_tgt_fput; + } /* * At this point it is safe to assume that the "private_data" contains @@ -1950,8 +1974,10 @@ SYSCALL_DEFINE4(epoll_ctl, int, epfd, int, op, int, fd, break; case EPOLL_CTL_MOD: if (epi) { - epds.events |= POLLERR | POLLHUP; - error = ep_modify(ep, epi, &epds); + if (!(epi->event.events & EPOLLEXCLUSIVE)) { + epds.events |= POLLERR | POLLHUP; + error = ep_modify(ep, epi, &epds); + } } else error = -ENOENT; break; diff --git a/fs/ocfs2/dlm/dlmrecovery.c b/fs/ocfs2/dlm/dlmrecovery.c index c5bdf02c213b..b94a425f0175 100644 --- a/fs/ocfs2/dlm/dlmrecovery.c +++ b/fs/ocfs2/dlm/dlmrecovery.c @@ -2367,6 +2367,8 @@ static void dlm_do_local_recovery_cleanup(struct dlm_ctxt *dlm, u8 dead_node) break; } } + dlm_lockres_clear_refmap_bit(dlm, res, + dead_node); spin_unlock(&res->spinlock); continue; } |