centos man page for ida_pre_get

IDA_PRE_GET(9)						  Basic Kernel Library Functions					    IDA_PRE_GET(9)

NAME
       ida_pre_get - reserve resources for ida allocation

SYNOPSIS
       int ida_pre_get(struct ida * ida, gfp_t gfp_mask);

ARGUMENTS
       ida
	   ida handle

       gfp_mask
	   memory allocation flag

DESCRIPTION
       This function should be called prior to locking and calling the following function. It preallocates enough memory to satisfy the worst
       possible allocation.

       If the system is REALLY out of memory this function returns 0, otherwise 1.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014							    IDA_PRE_GET(9)