diff options
-rw-r--r-- | fs/ext4/balloc.c | 2 | ||||
-rw-r--r-- | include/linux/percpu_counter.h | 12 | ||||
-rw-r--r-- | lib/percpu_counter.c | 8 |
3 files changed, 7 insertions, 15 deletions
diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c index e9fa960ba6da..00a94d5866c2 100644 --- a/fs/ext4/balloc.c +++ b/fs/ext4/balloc.c | |||
@@ -1624,7 +1624,7 @@ ext4_fsblk_t ext4_has_free_blocks(struct ext4_sb_info *sbi, | |||
1624 | #ifdef CONFIG_SMP | 1624 | #ifdef CONFIG_SMP |
1625 | if (free_blocks - root_blocks < FBC_BATCH) | 1625 | if (free_blocks - root_blocks < FBC_BATCH) |
1626 | free_blocks = | 1626 | free_blocks = |
1627 | percpu_counter_sum_and_set(&sbi->s_freeblocks_counter); | 1627 | percpu_counter_sum(&sbi->s_freeblocks_counter); |
1628 | #endif | 1628 | #endif |
1629 | if (free_blocks <= root_blocks) | 1629 | if (free_blocks <= root_blocks) |
1630 | /* we don't have free space */ | 1630 | /* we don't have free space */ |
diff --git a/include/linux/percpu_counter.h b/include/linux/percpu_counter.h index 208388835357..9007ccdfc112 100644 --- a/include/linux/percpu_counter.h +++ b/include/linux/percpu_counter.h | |||
@@ -35,7 +35,7 @@ int percpu_counter_init_irq(struct percpu_counter *fbc, s64 amount); | |||
35 | void percpu_counter_destroy(struct percpu_counter *fbc); | 35 | void percpu_counter_destroy(struct percpu_counter *fbc); |
36 | void percpu_counter_set(struct percpu_counter *fbc, s64 amount); | 36 | void percpu_counter_set(struct percpu_counter *fbc, s64 amount); |
37 | void __percpu_counter_add(struct percpu_counter *fbc, s64 amount, s32 batch); | 37 | void __percpu_counter_add(struct percpu_counter *fbc, s64 amount, s32 batch); |
38 | s64 __percpu_counter_sum(struct percpu_counter *fbc, int set); | 38 | s64 __percpu_counter_sum(struct percpu_counter *fbc); |
39 | 39 | ||
40 | static inline void percpu_counter_add(struct percpu_counter *fbc, s64 amount) | 40 | static inline void percpu_counter_add(struct percpu_counter *fbc, s64 amount) |
41 | { | 41 | { |
@@ -44,19 +44,13 @@ static inline void percpu_counter_add(struct percpu_counter *fbc, s64 amount) | |||
44 | 44 | ||
45 | static inline s64 percpu_counter_sum_positive(struct percpu_counter *fbc) | 45 | static inline s64 percpu_counter_sum_positive(struct percpu_counter *fbc) |
46 | { | 46 | { |
47 | s64 ret = __percpu_counter_sum(fbc, 0); | 47 | s64 ret = __percpu_counter_sum(fbc); |
48 | return ret < 0 ? 0 : ret; | 48 | return ret < 0 ? 0 : ret; |
49 | } | 49 | } |
50 | 50 | ||
51 | static inline s64 percpu_counter_sum_and_set(struct percpu_counter *fbc) | ||
52 | { | ||
53 | return __percpu_counter_sum(fbc, 1); | ||
54 | } | ||
55 | |||
56 | |||
57 | static inline s64 percpu_counter_sum(struct percpu_counter *fbc) | 51 | static inline s64 percpu_counter_sum(struct percpu_counter *fbc) |
58 | { | 52 | { |
59 | return __percpu_counter_sum(fbc, 0); | 53 | return __percpu_counter_sum(fbc); |
60 | } | 54 | } |
61 | 55 | ||
62 | static inline s64 percpu_counter_read(struct percpu_counter *fbc) | 56 | static inline s64 percpu_counter_read(struct percpu_counter *fbc) |
diff --git a/lib/percpu_counter.c b/lib/percpu_counter.c index 4a8ba4bf5f6f..a8663890a88c 100644 --- a/lib/percpu_counter.c +++ b/lib/percpu_counter.c | |||
@@ -52,7 +52,7 @@ EXPORT_SYMBOL(__percpu_counter_add); | |||
52 | * Add up all the per-cpu counts, return the result. This is a more accurate | 52 | * Add up all the per-cpu counts, return the result. This is a more accurate |
53 | * but much slower version of percpu_counter_read_positive() | 53 | * but much slower version of percpu_counter_read_positive() |
54 | */ | 54 | */ |
55 | s64 __percpu_counter_sum(struct percpu_counter *fbc, int set) | 55 | s64 __percpu_counter_sum(struct percpu_counter *fbc) |
56 | { | 56 | { |
57 | s64 ret; | 57 | s64 ret; |
58 | int cpu; | 58 | int cpu; |
@@ -62,11 +62,9 @@ s64 __percpu_counter_sum(struct percpu_counter *fbc, int set) | |||
62 | for_each_online_cpu(cpu) { | 62 | for_each_online_cpu(cpu) { |
63 | s32 *pcount = per_cpu_ptr(fbc->counters, cpu); | 63 | s32 *pcount = per_cpu_ptr(fbc->counters, cpu); |
64 | ret += *pcount; | 64 | ret += *pcount; |
65 | if (set) | 65 | *pcount = 0; |
66 | *pcount = 0; | ||
67 | } | 66 | } |
68 | if (set) | 67 | fbc->count = ret; |
69 | fbc->count = ret; | ||
70 | 68 | ||
71 | spin_unlock(&fbc->lock); | 69 | spin_unlock(&fbc->lock); |
72 | return ret; | 70 | return ret; |