linux-kernel - [PATCH] percpu: use INT_MAX as sentinel value of unit

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Tue, 10 Aug 2010 23:58:03 +0900
From:	Namhyung Kim <namhyung@...il.com>
To:	Tejun Heo <tj@...nel.org>
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH] percpu: use INT_MAX as sentinel value of unit_map

unit_map is a pointer to int so it would be more reasonable to use INT_MAX
as sentinel value.

Signed-off-by: Namhyung Kim <namhyung@...il.com>
---
 mm/percpu.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/mm/percpu.c b/mm/percpu.c
index 6470e77..9581f84 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -1390,7 +1390,7 @@ int __init pcpu_setup_first_chunk(const struct pcpu_alloc_info *ai,
 	unit_off = alloc_bootmem(nr_cpu_ids * sizeof(unit_off[0]));
 
 	for (cpu = 0; cpu < nr_cpu_ids; cpu++)
-		unit_map[cpu] = UINT_MAX;
+		unit_map[cpu] = INT_MAX;
 	pcpu_first_unit_cpu = NR_CPUS;
 
 	for (group = 0, unit = 0; group < ai->nr_groups; group++, unit += i) {
@@ -1406,7 +1406,7 @@ int __init pcpu_setup_first_chunk(const struct pcpu_alloc_info *ai,
 
 			PCPU_SETUP_BUG_ON(cpu > nr_cpu_ids);
 			PCPU_SETUP_BUG_ON(!cpu_possible(cpu));
-			PCPU_SETUP_BUG_ON(unit_map[cpu] != UINT_MAX);
+			PCPU_SETUP_BUG_ON(unit_map[cpu] != INT_MAX);
 
 			unit_map[cpu] = unit + i;
 			unit_off[cpu] = gi->base_offset + i * ai->unit_size;
@@ -1419,7 +1419,7 @@ int __init pcpu_setup_first_chunk(const struct pcpu_alloc_info *ai,
 	pcpu_nr_units = unit;
 
 	for_each_possible_cpu(cpu)
-		PCPU_SETUP_BUG_ON(unit_map[cpu] == UINT_MAX);
+		PCPU_SETUP_BUG_ON(unit_map[cpu] == INT_MAX);
 
 	/* we're done parsing the input, undefine BUG macro and dump config */
 #undef PCPU_SETUP_BUG_ON
-- 
1.7.0.4

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/