diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-08-03 14:58:13 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-08-03 14:58:13 -0700 |
| commit | 995d03ae266d3f3bec8844d01b6c3ded19b9cc1c (patch) | |
| tree | a98a9fa566b55def6d742578cd078afb21a44ed6 /fs/userfaultfd.c | |
| parent | 8d3fe85f07a99cbf82f12c486414eda1d186bfa1 (diff) | |
| parent | 19ec8e48582670c021e998b9deb88e39a842ff45 (diff) | |
Merge branch 'akpm' (patches from Andrew)
Merge misc fixes from Andrew Morton:
"15 fixes"
[ This does not merge the "fortify: use WARN instead of BUG for now"
patch, which needs a bit of extra work to build cleanly with all
configurations. Arnd is on it. - Linus ]
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
ocfs2: don't clear SGID when inheriting ACLs
mm: allow page_cache_get_speculative in interrupt context
userfaultfd: non-cooperative: flush event_wqh at release time
ipc: add missing container_of()s for randstruct
cpuset: fix a deadlock due to incomplete patching of cpusets_enabled()
userfaultfd_zeropage: return -ENOSPC in case mm has gone
mm: take memory hotplug lock within numa_zonelist_order_handler()
mm/page_io.c: fix oops during block io poll in swapin path
zram: do not free pool->size_class
kthread: fix documentation build warning
kasan: avoid -Wmaybe-uninitialized warning
userfaultfd: non-cooperative: notify about unmap of destination during mremap
mm, mprotect: flush TLB if potentially racing with a parallel reclaim leaving stale TLB entries
pid: kill pidhash_size in pidhash_init()
mm/hugetlb.c: __get_user_pages ignores certain follow_hugetlb_page errors
Diffstat (limited to 'fs/userfaultfd.c')
| -rw-r--r-- | fs/userfaultfd.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c index cadcd12a3d35..06ea26b8c996 100644 --- a/fs/userfaultfd.c +++ b/fs/userfaultfd.c @@ -854,6 +854,9 @@ wakeup: __wake_up_locked_key(&ctx->fault_wqh, TASK_NORMAL, &range); spin_unlock(&ctx->fault_pending_wqh.lock); + /* Flush pending events that may still wait on event_wqh */ + wake_up_all(&ctx->event_wqh); + wake_up_poll(&ctx->fd_wqh, POLLHUP); userfaultfd_ctx_put(ctx); return 0; @@ -1643,6 +1646,8 @@ static int userfaultfd_zeropage(struct userfaultfd_ctx *ctx, ret = mfill_zeropage(ctx->mm, uffdio_zeropage.range.start, uffdio_zeropage.range.len); mmput(ctx->mm); + } else { + return -ENOSPC; } if (unlikely(put_user(ret, &user_uffdio_zeropage->zeropage))) return -EFAULT; |