If there is any non zero bit in a long bitmap, it can jump out of the
loop and finish the function as soon as possible.
Signed-off-by: Jia He <hejianet@xxxxxxxxx>
Cc: Dave Chinner <david@xxxxxxxxxxxxx>
Cc: Brian Foster <bfoster@xxxxxxxxxx>
---
fs/xfs/libxfs/xfs_bit.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/fs/xfs/libxfs/xfs_bit.c b/fs/xfs/libxfs/xfs_bit.c
index 0e8885a..0a94cce 100644
--- a/fs/xfs/libxfs/xfs_bit.c
+++ b/fs/xfs/libxfs/xfs_bit.c
@@ -32,13 +32,13 @@ int
xfs_bitmap_empty(uint *map, uint size)
{
uint i;
- uint ret = 0;
for (i = 0; i < size; i++) {
- ret |= map[i];
+ if (map[i] != 0)
+ return 0;
}
- return (ret == 0);
+ return 1;
}
/*
--
2.5.0
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