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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-11-01 22:42:49 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-11-01 22:42:49 +0100 |
| commit | b5b1de3537e2cd8f52971224a1be24bb3ce34a65 (patch) | |
| tree | cd199730744628103c36b14c878b94af4fea4735 /mm/page_poison.c | |
| parent | Merge tag 'xtensa-20181101' of git://github.com/jcmvbkbc/linux-xtensa (diff) | |
| parent | MAINTAINERS: remove reference to bogus vsock file (diff) | |
| download | linux-b5b1de3537e2cd8f52971224a1be24bb3ce34a65.tar.xz linux-b5b1de3537e2cd8f52971224a1be24bb3ce34a65.zip | |
Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Pull virtio/vhost updates from Michael Tsirkin:
"Fixes and tweaks:
- virtio balloon page hinting support
- vhost scsi control queue
- misc fixes"
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
MAINTAINERS: remove reference to bogus vsock file
vhost/scsi: Use common handling code in request queue handler
vhost/scsi: Extract common handling code from control queue handler
vhost/scsi: Respond to control queue operations
vhost/scsi: truncate T10 PI iov_iter to prot_bytes
virtio-balloon: VIRTIO_BALLOON_F_PAGE_POISON
mm/page_poison: expose page_poisoning_enabled to kernel modules
virtio-balloon: VIRTIO_BALLOON_F_FREE_PAGE_HINT
kvm_config: add CONFIG_VIRTIO_MENU
Diffstat (limited to 'mm/page_poison.c')
| -rw-r--r-- | mm/page_poison.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/mm/page_poison.c b/mm/page_poison.c index f7e2a676365a..f0c15e9017c0 100644 --- a/mm/page_poison.c +++ b/mm/page_poison.c @@ -17,6 +17,11 @@ static int __init early_page_poison_param(char *buf) } early_param("page_poison", early_page_poison_param); +/** + * page_poisoning_enabled - check if page poisoning is enabled + * + * Return true if page poisoning is enabled, or false if not. + */ bool page_poisoning_enabled(void) { /* @@ -29,6 +34,7 @@ bool page_poisoning_enabled(void) (!IS_ENABLED(CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC) && debug_pagealloc_enabled())); } +EXPORT_SYMBOL_GPL(page_poisoning_enabled); static void poison_page(struct page *page) { |