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authoralc <alc@FreeBSD.org>2004-12-27 05:27:59 +0000
committeralc <alc@FreeBSD.org>2004-12-27 05:27:59 +0000
commit1e5940b06a89b0dc41a9d449ec503d39d159ef33 (patch)
treedefdc52b55e1f8d495d9e91dc58e37eb99f0a959 /sys
parentafd7d6f06b5c86668861cc94c3f7783ad4fde5e0 (diff)
downloadFreeBSD-src-1e5940b06a89b0dc41a9d449ec503d39d159ef33.zip
FreeBSD-src-1e5940b06a89b0dc41a9d449ec503d39d159ef33.tar.gz
Note that access to the page's busy count is synchronized by the containing
object's lock.
Diffstat (limited to 'sys')
-rw-r--r--sys/vm/vm_page.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/vm/vm_page.h b/sys/vm/vm_page.h
index 9c9cfba..9290994 100644
--- a/sys/vm/vm_page.h
+++ b/sys/vm/vm_page.h
@@ -121,7 +121,7 @@ struct vm_page {
u_int cow; /* page cow mapping count */
short hold_count; /* page hold count */
u_char act_count; /* page usage count */
- u_char busy; /* page busy count */
+ u_char busy; /* page busy count (O) */
/* NOTE that these must support one bit per DEV_BSIZE in a page!!! */
/* so, on normal X86 kernels, they must be at least 8 bits wide */
#if PAGE_SIZE == 4096
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