rdma_dereg_mr man page on Scientific

rdma_dereg_mr man page on Scientific

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RDMA_DEREG_MR(3)	 Librdmacm Programmer's Manual	      RDMA_DEREG_MR(3)

NAME
       rdma_dereg_mr - deregisters a registered memory region.

SYNOPSIS
       #include <rdma/rdma_verbs.h>

       struct ibv_mr * rdma_dereg_mr (struct ibv_mr *mr);

ARGUMENTS
       mr	   A reference to a registered memory buffer.

DESCRIPTION
       Deregisters  a  memory buffer that had been registered for RDMA or mes‐
       sage operations.	 A user should call rdma_dereg_mr for  all  registered
       memory associated with an rdma_cm_id before destroying the rdma_cm_id.

RETURN VALUE
       Returns	0  on success, or -1 on error.	If an error occurs, errno will
       be set to indicate the failure reason.

NOTES
       All memory registered with an rdma_cm_id is associated with the protec‐
       tion  domain  associated with the id.  Users must deregister all regis‐
       tered memory before the protection domain can be destroyed.

SEE ALSO
       rdma_cm(7), rdma_create_id(3),  rdma_create_ep(3),  rdma_destroy_id(3),
       rdma_destroy_ep(3),	   rdma_reg_msgs(3),	     rdma_reg_read(3),
       rdma_reg_write(3), ibv_reg_mr(3), ibv_dereg_mr(3)

librdmacm			  2010-07-19		      RDMA_DEREG_MR(3)

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