diff options
| author | David S. Miller <davem@davemloft.net> | 2017-06-21 17:35:22 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-06-21 17:35:22 -0400 |
| commit | 3d09198243b89457649241fb63f809a96a22a8ce (patch) | |
| tree | f8f62d4a0b47ebc44682363a8d23b8963e1ca3e9 /mm/huge_memory.c | |
| parent | 52f80dca7a1a9f4ad6f6bd5a9b9d25851e3d670a (diff) | |
| parent | 48b6bbef9a1789f0365c1a385879a1fea4460016 (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Two entries being added at the same time to the IFLA
policy table, whilst parallel bug fixes to decnet
routing dst handling overlapping with the dst gc removal
in net-next.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'mm/huge_memory.c')
| -rw-r--r-- | mm/huge_memory.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/mm/huge_memory.c b/mm/huge_memory.c index a84909cf20d3..88c6167f194d 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -1426,8 +1426,11 @@ int do_huge_pmd_numa_page(struct vm_fault *vmf, pmd_t pmd) */ if (unlikely(pmd_trans_migrating(*vmf->pmd))) { page = pmd_page(*vmf->pmd); + if (!get_page_unless_zero(page)) + goto out_unlock; spin_unlock(vmf->ptl); wait_on_page_locked(page); + put_page(page); goto out; } @@ -1459,9 +1462,12 @@ int do_huge_pmd_numa_page(struct vm_fault *vmf, pmd_t pmd) /* Migration could have started since the pmd_trans_migrating check */ if (!page_locked) { + page_nid = -1; + if (!get_page_unless_zero(page)) + goto out_unlock; spin_unlock(vmf->ptl); wait_on_page_locked(page); - page_nid = -1; + put_page(page); goto out; } |