Author: glebius
Date: Mon Apr 2 05:14:31 2018
New Revision: 331872
URL: https://svnweb.freebsd.org/changeset/base/331872
Log:
In uma_startup_count() handle special case when zone will fit into
single slab, but with alignment adjustment it won't. Again, when
there is only one item in a slab alignment can be ignored. See
previous revision of this file for more info.
PR: 227116
Modified:
head/sys/vm/uma_core.c
Modified: head/sys/vm/uma_core.c
==============================================================================
--- head/sys/vm/uma_core.c Mon Apr 2 05:11:59 2018 (r331871)
+++ head/sys/vm/uma_core.c Mon Apr 2 05:14:31 2018 (r331872)
@@ -1828,9 +1828,11 @@ uma_startup_count(int vm_zones)
#endif
/* Memory for the rest of startup zones, UMA and VM, ... */
- if (zsize > UMA_SLAB_SIZE)
+ if (zsize > UMA_SLAB_SPACE)
pages += (zones + vm_zones) *
howmany(roundup2(zsize, UMA_BOOT_ALIGN), UMA_SLAB_SIZE);
+ else if (roundup2(zsize, UMA_BOOT_ALIGN) > UMA_SLAB_SPACE)
+ pages += zones;
else
pages += howmany(zones,
UMA_SLAB_SPACE / roundup2(zsize, UMA_BOOT_ALIGN));
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