diff options
Diffstat (limited to 'crypto/async_tx')
| -rw-r--r-- | crypto/async_tx/async_pq.c | 1 | ||||
| -rw-r--r-- | crypto/async_tx/async_raid6_recov.c | 21 | ||||
| -rw-r--r-- | crypto/async_tx/raid6test.c | 1 |
3 files changed, 15 insertions, 8 deletions
diff --git a/crypto/async_tx/async_pq.c b/crypto/async_tx/async_pq.c index ec87f53d5059..fdd8257d35d9 100644 --- a/crypto/async_tx/async_pq.c +++ b/crypto/async_tx/async_pq.c @@ -24,6 +24,7 @@ #include <linux/dma-mapping.h> #include <linux/raid/pq.h> #include <linux/async_tx.h> +#include <linux/gfp.h> /** * pq_scribble_page - space to hold throwaway P or Q buffer for diff --git a/crypto/async_tx/async_raid6_recov.c b/crypto/async_tx/async_raid6_recov.c index 943f2abac9b4..ce038d861eb9 100644 --- a/crypto/async_tx/async_raid6_recov.c +++ b/crypto/async_tx/async_raid6_recov.c @@ -324,6 +324,7 @@ struct dma_async_tx_descriptor * async_raid6_2data_recov(int disks, size_t bytes, int faila, int failb, struct page **blocks, struct async_submit_ctl *submit) { + void *scribble = submit->scribble; int non_zero_srcs, i; BUG_ON(faila == failb); @@ -332,11 +333,13 @@ async_raid6_2data_recov(int disks, size_t bytes, int faila, int failb, pr_debug("%s: disks: %d len: %zu\n", __func__, disks, bytes); - /* we need to preserve the contents of 'blocks' for the async - * case, so punt to synchronous if a scribble buffer is not available + /* if a dma resource is not available or a scribble buffer is not + * available punt to the synchronous path. In the 'dma not + * available' case be sure to use the scribble buffer to + * preserve the content of 'blocks' as the caller intended. */ - if (!submit->scribble) { - void **ptrs = (void **) blocks; + if (!async_dma_find_channel(DMA_PQ) || !scribble) { + void **ptrs = scribble ? scribble : (void **) blocks; async_tx_quiesce(&submit->depend_tx); for (i = 0; i < disks; i++) @@ -406,11 +409,13 @@ async_raid6_datap_recov(int disks, size_t bytes, int faila, pr_debug("%s: disks: %d len: %zu\n", __func__, disks, bytes); - /* we need to preserve the contents of 'blocks' for the async - * case, so punt to synchronous if a scribble buffer is not available + /* if a dma resource is not available or a scribble buffer is not + * available punt to the synchronous path. In the 'dma not + * available' case be sure to use the scribble buffer to + * preserve the content of 'blocks' as the caller intended. */ - if (!scribble) { - void **ptrs = (void **) blocks; + if (!async_dma_find_channel(DMA_PQ) || !scribble) { + void **ptrs = scribble ? scribble : (void **) blocks; async_tx_quiesce(&submit->depend_tx); for (i = 0; i < disks; i++) diff --git a/crypto/async_tx/raid6test.c b/crypto/async_tx/raid6test.c index f84f6b4301d9..c1321935ebcc 100644 --- a/crypto/async_tx/raid6test.c +++ b/crypto/async_tx/raid6test.c @@ -20,6 +20,7 @@ * */ #include <linux/async_tx.h> +#include <linux/gfp.h> #include <linux/random.h> #undef pr |