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libxfs: Optimize the loop for xfs_bitmap_empty

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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@gmail.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
This commit is contained in:
Jia He 2016-01-04 16:10:19 +11:00 committed by Dave Chinner
parent 168309855a
commit 1d4292bfdc
1 changed files with 3 additions and 3 deletions
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6
fs/xfs/libxfs/xfs_bit.c
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@ -32,13 +32,13 @@ int
xfs_bitmap_empty(uint *map, uint size) xfs_bitmap_empty(uint *map, uint size)
{ {
uint i; uint i;
uint ret = 0;
for (i = 0; i < size; i++) { for (i = 0; i < size; i++) {
ret |= map[i]; if (map[i] != 0)
return 0;
} }
return (ret == 0); return 1;
} }
/* /*