Aren
/
NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Fix uvm_page_physget_freelist so that it actually performs the two passes 

it mentions.
This commit is contained in:
skrll 2016-12-23 09:36:55 +00:00
parent 5aa4cebe72
commit 8e2dc22e79
1 changed files with 7 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
sys/uvm/uvm_page.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: uvm_page.c,v 1.190 2016/12/23 07:15:28 cherry Exp $ */
/* $NetBSD: uvm_page.c,v 1.191 2016/12/23 09:36:55 skrll Exp $ */
/*
* Copyright (c) 1997 Charles D. Cranor and Washington University.
@ -66,7 +66,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: uvm_page.c,v 1.190 2016/12/23 07:15:28 cherry Exp $");
__KERNEL_RCSID(0, "$NetBSD: uvm_page.c,v 1.191 2016/12/23 09:36:55 skrll Exp $");
#include "opt_ddb.h"
#include "opt_uvm.h"
@ -619,9 +619,9 @@ uvm_page_physget_freelist(paddr_t *paddrp, int freelist)
/* pass 1: try allocating from a matching end */
#if (VM_PHYSSEG_STRAT == VM_PSTRAT_BIGFIRST)
for (lcv = uvm_physseg_get_last() ; uvm_physseg_valid_p(lcv) ; lcv = uvm_physseg_get_prev(lcv))
for (lcv = uvm_physseg_get_last(); uvm_physseg_valid_p(lcv); lcv = uvm_physseg_get_prev(lcv))
#else
for (lcv = uvm_physseg_get_first() ; uvm_physseg_valid_p(lcv) ; lcv = uvm_physseg_get_next(lcv))
for (lcv = uvm_physseg_get_first(); uvm_physseg_valid_p(lcv); lcv = uvm_physseg_get_next(lcv))
#endif
{
if (uvm.page_init_done == true)
@ -633,13 +633,13 @@ uvm_page_physget_freelist(paddr_t *paddrp, int freelist)
continue;
} else
return true;
}
/* pass2: forget about matching ends, just allocate something */
#if (VM_PHYSSEG_STRAT == VM_PSTRAT_BIGFIRST)
for (lcv = uvm_physseg_get_last() ; uvm_physseg_valid_p(lcv); lcv = uvm_physseg_get_prev(lcv))
for (lcv = uvm_physseg_get_last(); uvm_physseg_valid_p(lcv); lcv = uvm_physseg_get_prev(lcv))
#else
for (lcv = uvm_physseg_get_first() ; uvm_physseg_valid_p(lcv) ; lcv = uvm_physseg_get_next(lcv))
for (lcv = uvm_physseg_get_first(); uvm_physseg_valid_p(lcv); lcv = uvm_physseg_get_next(lcv))
#endif
{
/* Try the front regardless. */
@ -649,7 +649,6 @@ uvm_page_physget_freelist(paddr_t *paddrp, int freelist)
} else
return true;
}
}
return false;
}