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| author | YueHaibing <yuehaibing@huawei.com> | 2019-02-20 13:32:02 +0100 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2019-02-25 14:19:23 +0100 |
| commit | f65e25e343cfc0e6f4db9a687c4085fad268325d (patch) | |
| tree | 6cc60e13debb16510fe5387ff6932a4e99dd7f81 | |
| parent | Btrfs: remove assertion when searching for a key in a node/leaf (diff) | |
| download | linux-f65e25e343cfc0e6f4db9a687c4085fad268325d.tar.xz linux-f65e25e343cfc0e6f4db9a687c4085fad268325d.zip | |
btrfs: Remove unnecessary casts in btrfs_read_root_item
There is a messy cast here:
min_t(int, len, (int)sizeof(*item)));
min_t() should normally cast to unsigned. It's not possible for "len"
to be negative, but if it were then we definitely wouldn't want to pass
negatives to read_extent_buffer(). Also there is an extra cast.
This patch shouldn't affect runtime, it's just a clean up.
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David Sterba <dsterba@suse.com>
| -rw-r--r-- | fs/btrfs/root-tree.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/btrfs/root-tree.c b/fs/btrfs/root-tree.c index 65bda0682928..0d2b957ca3a3 100644 --- a/fs/btrfs/root-tree.c +++ b/fs/btrfs/root-tree.c @@ -21,12 +21,12 @@ static void btrfs_read_root_item(struct extent_buffer *eb, int slot, struct btrfs_root_item *item) { uuid_le uuid; - int len; + u32 len; int need_reset = 0; len = btrfs_item_size_nr(eb, slot); read_extent_buffer(eb, item, btrfs_item_ptr_offset(eb, slot), - min_t(int, len, (int)sizeof(*item))); + min_t(u32, len, sizeof(*item))); if (len < sizeof(*item)) need_reset = 1; if (!need_reset && btrfs_root_generation(item) |