From 428c8e03109e717d90e0d1329dc3d926b9421ad3 Mon Sep 17 00:00:00 2001 From: David Sterba Date: Wed, 26 Oct 2022 23:25:14 +0200 Subject: btrfs: simplify percent calculation helpers, rename div_factor The div_factor* helpers calculate fraction or percentage fraction. The name is a bit confusing, we use it only for percentage calculations and there are two helpers. There's a helper mult_frac that's for general fractions, that tries to be accurate but we multiply and divide by small numbers so we can use the div_u64 helper. Rename the div_factor* helpers and use 1..100 percentage range, also drop the case checking for percentage == 100, it's never hit. The conversions: * div_factor calculates tenths and the numbers need to be adjusted * div_factor_fine is direct replacement Signed-off-by: David Sterba --- fs/btrfs/sysfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/btrfs/sysfs.c') diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c index a14812f1254a..45615ce36498 100644 --- a/fs/btrfs/sysfs.c +++ b/fs/btrfs/sysfs.c @@ -764,7 +764,7 @@ static ssize_t btrfs_chunk_size_store(struct kobject *kobj, val = min(val, BTRFS_MAX_DATA_CHUNK_SIZE); /* Limit stripe size to 10% of available space. */ - val = min(div_factor(fs_info->fs_devices->total_rw_bytes, 1), val); + val = min(mult_perc(fs_info->fs_devices->total_rw_bytes, 10), val); /* Must be multiple of 256M. */ val &= ~((u64)SZ_256M - 1); -- cgit v1.2.3-73-gaa49b