diff options
| -rw-r--r-- | sys/src/9/port/page.c | 7 | ||||
| -rw-r--r-- | sys/src/9/port/portdat.h | 3 | ||||
| -rw-r--r-- | sys/src/9/port/segment.c | 1 |
3 files changed, 8 insertions, 3 deletions
diff --git a/sys/src/9/port/page.c b/sys/src/9/port/page.c index e8c5b6ce0..50cb4efca 100644 --- a/sys/src/9/port/page.c +++ b/sys/src/9/port/page.c @@ -228,6 +228,9 @@ putpage(Page *p) return; } + if(p->image && p->image->nocache) + uncachepage(p); + if(p->image && p->image != &swapimage) pagechaintail(p); else @@ -291,8 +294,8 @@ duppage(Page *p) /* Always call with p locked */ return; } - /* No freelist cache when memory is very low */ - if(palloc.freecount < swapalloc.highwater) { + /* No freelist cache with uncached image or when memory is very low */ + if(p->image->nocache || palloc.freecount < swapalloc.highwater) { unlock(&palloc); uncachepage(p); return; diff --git a/sys/src/9/port/portdat.h b/sys/src/9/port/portdat.h index 84545077b..2cad12930 100644 --- a/sys/src/9/port/portdat.h +++ b/sys/src/9/port/portdat.h @@ -352,7 +352,8 @@ struct Image Segment *s; /* TEXT segment for image if running */ Image *hash; /* Qid hash chains */ Image *next; /* Free list */ - int notext; /* no file associated */ + char notext; /* no file associated */ + char nocache; /* no freelist page caching */ }; struct Pte diff --git a/sys/src/9/port/segment.c b/sys/src/9/port/segment.c index c71eb43e6..1e263fd43 100644 --- a/sys/src/9/port/segment.c +++ b/sys/src/9/port/segment.c @@ -275,6 +275,7 @@ attachimage(int type, Chan *c, ulong base, ulong len) lock(i); incref(c); + i->nocache = (c->flag & CCACHE) == 0; c->flag &= ~CCACHE; i->c = c; i->type = c->type; |