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| author | Lukas Bulwahn <lukas.bulwahn@gmail.com> | 2022-10-26 14:00:29 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-10-28 22:37:23 +0200 |
| commit | 1b9c918318476b4441ddd754ee6699b5367bb5ee (patch) | |
| tree | a302de0caec6f8d7ef6aff1178e202abcd9dea6c /lib | |
| parent | mmap: fix remap_file_pages() regression (diff) | |
| download | linux-1b9c918318476b4441ddd754ee6699b5367bb5ee.tar.xz linux-1b9c918318476b4441ddd754ee6699b5367bb5ee.zip | |
lib: maple_tree: remove unneeded initialization in mtree_range_walk()
Before the do-while loop in mtree_range_walk(), the variables next, min,
max need to be initialized. The variables last, prev_min and prev_max are
set within the loop body before they are eventually used after exiting the
loop body.
As it is a do-while loop, the loop body is executed at least once, so the
variables last, prev_min and prev_max do not need to be initialized before
the loop body.
Remove unneeded initialization of last and prev_min.
The needless initialization was reported by clang-analyzer as Dead Stores.
As the compiler already identifies these assignments as unneeded, it
optimizes the assignments away. Hence:
No functional change. No change in object code.
Link: https://lkml.kernel.org/r/20221026120029.12555-2-lukas.bulwahn@gmail.com
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/maple_tree.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/maple_tree.c b/lib/maple_tree.c index e1743803c851..fbde494444b8 100644 --- a/lib/maple_tree.c +++ b/lib/maple_tree.c @@ -2903,8 +2903,8 @@ static inline void *mtree_range_walk(struct ma_state *mas) unsigned long max, min; unsigned long prev_max, prev_min; - last = next = mas->node; - prev_min = min = mas->min; + next = mas->node; + min = mas->min; max = mas->max; do { offset = 0; |