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| author | David Sterba | 2015-01-16 17:21:12 +0100 |
|---|---|---|
| committer | David Sterba | 2015-03-03 17:23:57 +0100 |
| commit | f8c269d7223f6b63cc5936eb191bc3b170d24342 (patch) | |
| tree | 2e82cc23da9f436bbb6fde058b3321619f990db2 /fs/btrfs/super.c | |
| parent | btrfs: use cond_resched_lock where possible (diff) | |
| download | kernel-qcow2-linux-f8c269d7223f6b63cc5936eb191bc3b170d24342.tar.gz kernel-qcow2-linux-f8c269d7223f6b63cc5936eb191bc3b170d24342.tar.xz kernel-qcow2-linux-f8c269d7223f6b63cc5936eb191bc3b170d24342.zip | |
btrfs: cleanup 64bit/32bit divs, compile time constants
Switch to div_u64 if the divisor is a numeric constant or sum of
sizeof()s. We can remove a few instances of do_div that has the hidden
semtantics of changing the 1st argument.
Small power-of-two divisors are converted to bitshifts, large values are
kept intact for clarity.
Signed-off-by: David Sterba <dsterba@suse.cz>
Diffstat (limited to 'fs/btrfs/super.c')
| -rw-r--r-- | fs/btrfs/super.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 100a0442c413..530a0baa7c71 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -1704,7 +1704,7 @@ static int btrfs_calc_avail_data_space(struct btrfs_root *root, u64 *free_bytes) avail_space = device->total_bytes - device->bytes_used; /* align with stripe_len */ - do_div(avail_space, BTRFS_STRIPE_LEN); + avail_space = div_u64(avail_space, BTRFS_STRIPE_LEN); avail_space *= BTRFS_STRIPE_LEN; /* |