ed1af3c86c
complete munmap implementation; single-page references made a general munmap() implementation possible to write cleanly. . memory: let the MIOCRAMSIZE ioctl set the imgrd device size (but only to 0) . let the ramdisk command set sizes to 0 . use this command to set /dev/imgrd to 0 after mounting /usr in /etc/rc, so the boot time ramdisk is freed (about 4MB currently)
25 lines
578 B
C
25 lines
578 B
C
/* This file contains memory management routines for RS.
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*
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* Changes:
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* Nov 22, 2009: Created (Cristiano Giuffrida)
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*/
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#include "inc.h"
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#define minix_munmap _minix_munmap
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#include <sys/mman.h>
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#undef minix_munmap
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int unmap_ok = 0;
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/*===========================================================================*
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* minix_munmap *
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*===========================================================================*/
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int minix_munmap(void *addrstart, vir_bytes len)
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{
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if(!unmap_ok)
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return ENOSYS;
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return _minix_munmap(addrstart, len);
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}
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