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refcount.9: Update refcount_acquire(9) description after a67d540832

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MFC after:	3 days
Sponsored by:	Juniper Networks, Inc.
Reviewed by:	kib, markj
Differential Revision:	https://reviews.freebsd.org/D36943
This commit is contained in:
Ka Ho Ng 2022-10-12 13:47:59 -04:00
parent 631bdcf304
commit 87fa64c569
1 changed files with 3 additions and 2 deletions
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share/man/man9/refcount.9
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@ -32,7 +32,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd November 2, 2020
.Dd October 12, 2022
.Dt REFCOUNT 9
.Os
.Sh NAME
@ -48,7 +48,7 @@
.Fn refcount_init "volatile u_int *count" "u_int value"
.Ft u_int
.Fn refcount_load "volatile u_int *count"
.Ft void
.Ft u_int
.Fn refcount_acquire "volatile u_int *count"
.Ft bool
.Fn refcount_acquire_checked "volatile u_int *count"
@ -91,6 +91,7 @@ qualifier.
The
.Fn refcount_acquire
function is used to acquire a new reference.
It returns the counter value before the new reference was acquired.
The caller is responsible for ensuring that it holds a valid reference
while obtaining a new reference.
For example,