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SCSI_KMAP_ATOMIC_SG(9) SCSI mid layer SCSI_KMAP_ATOMIC_SG(9)

NAME

scsi_kmap_atomic_sg - find and atomically map an sg-elemnt

SYNOPSIS

void * scsi_kmap_atomic_sg(struct scatterlist * sgl, int sg_count, size_t * offset, size_t * len);

ARGUMENTS

struct scatterlist * sgl
scatter-gather list

int sg_count

number of segments in sg

size_t * offset

offset in bytes into sg, on return offset into the mapped area

size_t * len

bytes to map, on return number of bytes mapped

DESCRIPTION

Returns virtual address of the start of the mapped page

AUTHORS

James Bottomley <James.Bottomley@hansenpartnership.com>
Author.

Rob Landley <rob@landley.net>

Author.

COPYRIGHT

September 2017 Kernel Hackers Manual 4.12