diff options
| author | Jani Nikula <jani.nikula@intel.com> | 2017-09-04 21:40:34 +0300 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2017-09-04 21:40:34 +0300 |
| commit | d149d6ae17197ce23e2cd6bc5fcdacf7b593e55e (patch) | |
| tree | 2fb8d66199080f6d7b41690f6e8616ccd79a1943 /mm/page_io.c | |
| parent | afe722bee4bf8afc88c6ff7d6f781515d9428595 (diff) | |
| parent | 7846b12fe0b5feab5446d892f41b5140c1419109 (diff) | |
| download | linux-d149d6ae17197ce23e2cd6bc5fcdacf7b593e55e.tar.bz2 | |
Merge drm-upstream/drm-next into drm-intel-next-queued
Catch up with upstream while it's easy.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Diffstat (limited to 'mm/page_io.c')
| -rw-r--r-- | mm/page_io.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/mm/page_io.c b/mm/page_io.c index b6c4ac388209..5f61b54ee1f3 100644 --- a/mm/page_io.c +++ b/mm/page_io.c @@ -22,6 +22,7 @@ #include <linux/frontswap.h> #include <linux/blkdev.h> #include <linux/uio.h> +#include <linux/sched/task.h> #include <asm/pgtable.h> static struct bio *get_swap_bio(gfp_t gfp_flags, @@ -136,6 +137,7 @@ out: WRITE_ONCE(bio->bi_private, NULL); bio_put(bio); wake_up_process(waiter); + put_task_struct(waiter); } int generic_swapfile_activate(struct swap_info_struct *sis, @@ -378,6 +380,11 @@ int swap_readpage(struct page *page, bool do_poll) goto out; } bdev = bio->bi_bdev; + /* + * Keep this task valid during swap readpage because the oom killer may + * attempt to access it in the page fault retry time check. + */ + get_task_struct(current); bio->bi_private = current; bio_set_op_attrs(bio, REQ_OP_READ, 0); count_vm_event(PSWPIN); |