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| author | NeilBrown <neilb@suse.com> | 2016-01-07 11:02:34 +1100 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2016-01-07 11:06:18 +0530 |
| commit | 874fbf3b2b51ca47c6a69a8e8ec5e8480c492478 (patch) | |
| tree | e23eae0884d78fba55a41668cf809ae3ecd61159 /crypto/async_tx/async_raid6_recov.c | |
| parent | aed50612bf09718be8955e224864d7f2e83e0727 (diff) | |
| download | linux-crypto-874fbf3b2b51ca47c6a69a8e8ec5e8480c492478.tar.gz linux-crypto-874fbf3b2b51ca47c6a69a8e8ec5e8480c492478.zip | |
async_tx: use GFP_NOWAIT rather than GFP_IO
These async_XX functions are called from md/raid5 in an atomic
section, between get_cpu() and put_cpu(), so they must not sleep.
So use GFP_NOWAIT rather than GFP_IO.
Dan Williams writes: Longer term async_tx needs to be merged into md
directly as we can allocate this unmap data statically per-stripe
rather than per request.
Fixed: 72d3260bd533 ("async_pq: convert to dmaengine_unmap_data")
Cc: stable@vger.kernel.org (v3.13+)
Reported-and-tested-by: Stanislav Samsonov <slava@annapurnalabs.com>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'crypto/async_tx/async_raid6_recov.c')
| -rw-r--r-- | crypto/async_tx/async_raid6_recov.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/crypto/async_tx/async_raid6_recov.c b/crypto/async_tx/async_raid6_recov.c index 934a8498..8fab6275 100644 --- a/crypto/async_tx/async_raid6_recov.c +++ b/crypto/async_tx/async_raid6_recov.c @@ -41,7 +41,7 @@ async_sum_product(struct page *dest, struct page **srcs, unsigned char *coef, u8 *a, *b, *c; if (dma) - unmap = dmaengine_get_unmap_data(dma->dev, 3, GFP_NOIO); + unmap = dmaengine_get_unmap_data(dma->dev, 3, GFP_NOWAIT); if (unmap) { struct device *dev = dma->dev; @@ -105,7 +105,7 @@ async_mult(struct page *dest, struct page *src, u8 coef, size_t len, u8 *d, *s; if (dma) - unmap = dmaengine_get_unmap_data(dma->dev, 3, GFP_NOIO); + unmap = dmaengine_get_unmap_data(dma->dev, 3, GFP_NOWAIT); if (unmap) { dma_addr_t dma_dest[2]; |