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__GET_REQUEST(9) Block Devices __GET_REQUEST(9)

NAME

__get_request - get a free request

SYNOPSIS

struct request * __get_request(struct request_list * rl, int rw_flags, struct bio * bio, gfp_t gfp_mask);

ARGUMENTS

rl
request list to allocate from
rw_flags
RW and SYNC flags
bio
bio to allocate request for (can be NULL)
gfp_mask
allocation mask

DESCRIPTION

Get a free request from q. This function may fail under memory pressure or if q is dead.
Must be callled with q->queue_lock held and, Returns NULL on failure, with q->queue_lock held. Returns !NULL on success, with q->queue_lock *not held*.

COPYRIGHT

May 2018 Kernel Hackers Manual 3.16