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| author | Bart Van Assche <bart.vanassche@sandisk.com> | 2016-09-26 09:09:42 -0700 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2016-10-07 16:54:38 -0400 |
| commit | 52746129e02998fb45942aed359e77e63def4997 (patch) | |
| tree | 1e1b38fc9ac976f1a7a98d59310937b204c5dcbb /drivers | |
| parent | fd10ed8e6f4246ac5e18b921ba50562959502117 (diff) | |
| download | linux-52746129e02998fb45942aed359e77e63def4997.tar.bz2 | |
IB/core: Improve ib_map_mr_sg() documentation
Document that ib_map_mr_sg() is able to map physically discontiguous
sg-lists as a single MR. Change IB_MR_TYPE_SG_GAPS_REG into
IB_MR_TYPE_SG_GAPS.
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Sagi Grimberg <sagi@grimberg.me>
Cc: Christoph Hellwig <hch@lst.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@rimberg.me>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/infiniband/core/verbs.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c index d4ef3b1a695a..1c6b2a4f50d4 100644 --- a/drivers/infiniband/core/verbs.c +++ b/drivers/infiniband/core/verbs.c @@ -1811,13 +1811,13 @@ EXPORT_SYMBOL(ib_set_vf_guid); * * Constraints: * - The first sg element is allowed to have an offset. - * - Each sg element must be aligned to page_size (or physically - * contiguous to the previous element). In case an sg element has a - * non contiguous offset, the mapping prefix will not include it. + * - Each sg element must either be aligned to page_size or virtually + * contiguous to the previous element. In case an sg element has a + * non-contiguous offset, the mapping prefix will not include it. * - The last sg element is allowed to have length less than page_size. * - If sg_nents total byte length exceeds the mr max_num_sge * page_size * then only max_num_sg entries will be mapped. - * - If the MR was allocated with type IB_MR_TYPE_SG_GAPS_REG, non of these + * - If the MR was allocated with type IB_MR_TYPE_SG_GAPS, none of these * constraints holds and the page_size argument is ignored. * * Returns the number of sg elements that were mapped to the memory region. |