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| author | Dan Williams <dan.j.williams@intel.com> | 2013-10-18 21:35:24 +0400 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2013-11-14 04:25:06 +0400 |
| commit | 45c463ae924c62af4aa64ded1ca831f334a1db65 (patch) | |
| tree | 1087e0630ec29998f15a7fc2a7dbec2a3ff35e80 /crypto/async_tx | |
| parent | d38a8c622a1b382336c3e152c6caf4e11d1f1b2a (diff) | |
| download | linux-45c463ae924c62af4aa64ded1ca831f334a1db65.tar.xz | |
dmaengine: reference counted unmap data
Hang a common 'unmap' object off of dma descriptors for the purpose of
providing a unified unmapping interface. The lifetime of a mapping may
span multiple descriptors, so these unmap objects are reference counted
by related descriptor.
Cc: Vinod Koul <vinod.koul@intel.com>
Cc: Tomasz Figa <t.figa@samsung.com>
Cc: Dave Jiang <dave.jiang@intel.com>
[bzolnier: fix IS_ENABLED() check]
[bzolnier: fix release ordering in dmaengine_destroy_unmap_pool()]
[bzolnier: fix check for success in dmaengine_init_unmap_pool()]
[bzolnier: use mempool_free() instead of kmem_cache_free()]
[bzolnier: add missing unmap->len initializations]
[bzolnier: add __init tag to dmaengine_init_unmap_pool()]
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
[djbw: move DMAENGINE=n support to this patch for async_tx]
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'crypto/async_tx')
0 files changed, 0 insertions, 0 deletions