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authorLinus Torvalds <torvalds@linux-foundation.org>2020-04-02 15:21:48 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-04-02 15:21:48 -0700
commitac438771ccb4479528594c7e19f2c39cf1814a86 (patch)
treed0579433dc73c12d188c40494040c45d85660dea /lib
parent8c1b724ddb218f221612d4c649bc9c7819d8d7a6 (diff)
parentbfacd38f8d5b1f12b80aaacae2c15e1ffe11f06e (diff)
Merge branch 'for-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu
Pull percpu updates from Dennis Zhou: "This is just a few documentation fixes for percpu refcount and bitmap helpers that went in v5.6, and moving my emails to all be at korg" * 'for-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu: percpu: update copyright emails to dennis@kernel.org include/bitmap.h: add new functions to documentation include/bitmap.h: add missing parameter in docs percpu_ref: Fix comment regarding percpu_ref_init flags
Diffstat (limited to 'lib')
-rw-r--r--lib/percpu-refcount.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/lib/percpu-refcount.c b/lib/percpu-refcount.c
index 4f6c6ebbbbde..8d092609928e 100644
--- a/lib/percpu-refcount.c
+++ b/lib/percpu-refcount.c
@@ -50,9 +50,10 @@ static unsigned long __percpu *percpu_count_ptr(struct percpu_ref *ref)
* @flags: PERCPU_REF_INIT_* flags
* @gfp: allocation mask to use
*
- * Initializes @ref. If @flags is zero, @ref starts in percpu mode with a
- * refcount of 1; analagous to atomic_long_set(ref, 1). See the
- * definitions of PERCPU_REF_INIT_* flags for flag behaviors.
+ * Initializes @ref. @ref starts out in percpu mode with a refcount of 1 unless
+ * @flags contains PERCPU_REF_INIT_ATOMIC or PERCPU_REF_INIT_DEAD. These flags
+ * change the start state to atomic with the latter setting the initial refcount
+ * to 0. See the definitions of PERCPU_REF_INIT_* flags for flag behaviors.
*
* Note that @release must not sleep - it may potentially be called from RCU
* callback context by percpu_ref_kill().