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| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2024-12-11 20:40:14 +0000 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2026-07-22 21:11:26 -0700 |
| commit | 1d16af42a5f96355783b3dd7cc9f92d472625114 (patch) | |
| tree | f267403589441cd7dadb1e5b1e40f6cd1f3d5960 /include/linux/percpu-refcount.h | |
| parent | 31f72db1a65885db3850bbe4e82102ab07580b22 (diff) | |
| download | linux-next-1d16af42a5f96355783b3dd7cc9f92d472625114.tar.gz linux-next-1d16af42a5f96355783b3dd7cc9f92d472625114.zip | |
percpu_ref: fix documentation of maximum value
Tejun changd percpu_ref to use long instead of int back in 2014 but missed
updating this bit of the documentation. Also add the documentation to the
htmldocs.
Link: https://lore.kernel.org/20241211204017.184512-1-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include/linux/percpu-refcount.h')
| -rw-r--r-- | include/linux/percpu-refcount.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/include/linux/percpu-refcount.h b/include/linux/percpu-refcount.h index d73a1c08c3e3..1e3212e2c827 100644 --- a/include/linux/percpu-refcount.h +++ b/include/linux/percpu-refcount.h @@ -12,8 +12,8 @@ * start shutting down you call percpu_ref_kill() _before_ dropping the initial * refcount. * - * The refcount will have a range of 0 to ((1U << 31) - 1), i.e. one bit less - * than an atomic_t - this is because of the way shutdown works, see + * The refcount will have a range of 0 to LONG_MAX, i.e. one bit less + * than an atomic_long_t - this is because of the way shutdown works, see * percpu_ref_kill()/PERCPU_COUNT_BIAS. * * Before you call percpu_ref_kill(), percpu_ref_put() does not check for the @@ -269,6 +269,7 @@ static inline bool percpu_ref_tryget(struct percpu_ref *ref) /** * percpu_ref_tryget_live_rcu - same as percpu_ref_tryget_live() but the * caller is responsible for taking RCU. + * @ref: percpu_ref to try-get * * This function is safe to call as long as @ref is between init and exit. */ |