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| author |   David Sterba <dsterba@suse.cz> | 2015-01-16 17:21:12 +0100 |
|---|---|---|
| committer | David Sterba <dsterba@suse.cz> | 2015-03-03 17:23:57 +0100 |
| commit | f8c269d7223f6b63cc5936eb191bc3b170d24342 (patch) | |
| tree | 2e82cc23da9f436bbb6fde058b3321619f990db2 /fs/btrfs/disk-io.c | |
| parent | btrfs: use cond_resched_lock where possible (diff) | |
| download | linux-dev-f8c269d7223f6b63cc5936eb191bc3b170d24342.tar.xz linux-dev-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/disk-io.c')
| -rw-r--r-- | fs/btrfs/disk-io.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 41b320e235d7..73b152138221 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -2277,7 +2277,7 @@ int open_ctree(struct super_block *sb, fs_info->free_chunk_space = 0; fs_info->tree_mod_log = RB_ROOT; fs_info->commit_interval = BTRFS_DEFAULT_COMMIT_INTERVAL; - fs_info->avg_delayed_ref_runtime = div64_u64(NSEC_PER_SEC, 64); + fs_info->avg_delayed_ref_runtime = NSEC_PER_SEC >> 6; /* div by 64 */ /* readahead state */ INIT_RADIX_TREE(&fs_info->reada_tree, GFP_NOFS & ~__GFP_WAIT); spin_lock_init(&fs_info->reada_lock); |