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| author | jlemon <jlemon@FreeBSD.org> | 2001-11-17 00:40:48 +0000 |
|---|---|---|
| committer | jlemon <jlemon@FreeBSD.org> | 2001-11-17 00:40:48 +0000 |
| commit | 86ee7095b92eeb2d5ad9405bc3e1385692807a80 (patch) | |
| tree | 17dedf9097469de1b55ba3cd1a6716df7cae3838 /sys/vm | |
| parent | ac0c0d2f8c602fc1be33408852e2b62c9ca96bd8 (diff) | |
| download | FreeBSD-src-86ee7095b92eeb2d5ad9405bc3e1385692807a80.zip FreeBSD-src-86ee7095b92eeb2d5ad9405bc3e1385692807a80.tar.gz | |
When laying out objects in a ZONE_INTERRUPT zone, allow them to cross
a page boundary, since we've already allocated all our contiguous kva
space up front. This eliminates some memory wastage, and allows us to
actually reach the # of objects were specified in the zinit() call.
Reviewed by: peter, dillon
Diffstat (limited to 'sys/vm')
| -rw-r--r-- | sys/vm/vm_zone.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/sys/vm/vm_zone.c b/sys/vm/vm_zone.c index 78c6f71..a1b1d3c 100644 --- a/sys/vm/vm_zone.c +++ b/sys/vm/vm_zone.c @@ -373,7 +373,9 @@ _zget(vm_zone_t z) KASSERT(z != NULL, ("invalid zone")); if (z->zflags & ZONE_INTERRUPT) { - item = (char *) z->zkva + z->zpagecount * PAGE_SIZE; + nbytes = z->zpagecount * PAGE_SIZE; + nbytes -= nbytes % z->zsize; + item = (char *) z->zkva + nbytes; for (i = 0; ((i < z->zalloc) && (z->zpagecount < z->zpagemax)); i++) { vm_offset_t zkva; @@ -390,7 +392,7 @@ _zget(vm_zone_t z) atomic_add_int(&zone_kmem_pages, 1); cnt.v_wire_count++; } - nitems = (i * PAGE_SIZE) / z->zsize; + nitems = ((z->zpagecount * PAGE_SIZE) - nbytes) / z->zsize; } else { /* Please check zdestroy() when changing this! */ nbytes = z->zalloc * PAGE_SIZE; |
