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f2fs: fix potential overflow when adjusting GC cycle

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While comparing signed and unsigned variables, compiler will converts the
signed value to unsigned one, due to this reason, {in,de}crease_sleep_time
may return overflowed result.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu
2017-08-07 23:12:46 +08:00
committed by Jaegeuk Kim
parent 9a20d391cd
commit b8c502b81e
3 changed files with 19 additions and 12 deletions
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6
include/trace/events/f2fs.h
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@@ -543,14 +543,14 @@ TRACE_EVENT(f2fs_map_blocks,
TRACE_EVENT(f2fs_background_gc,
TP_PROTO(struct super_block *sb, long wait_ms,
TP_PROTO(struct super_block *sb, unsigned int wait_ms,
unsigned int prefree, unsigned int free),
TP_ARGS(sb, wait_ms, prefree, free),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(long, wait_ms)
__field(unsigned int, wait_ms)
__field(unsigned int, prefree)
__field(unsigned int, free)
),
@@ -562,7 +562,7 @@ TRACE_EVENT(f2fs_background_gc,
__entry->free = free;
),
TP_printk("dev = (%d,%d), wait_ms = %ld, prefree = %u, free = %u",
TP_printk("dev = (%d,%d), wait_ms = %u, prefree = %u, free = %u",
show_dev(__entry->dev),
__entry->wait_ms,
__entry->prefree,