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authorArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2008-12-18 14:06:51 +0200
committerArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2008-12-23 12:23:40 +0200
commit4d61db4f87b527734ac0cc830dda8fcc4e2add2f (patch)
tree881cb7614a928ba004f588a82c064592f461fee3 /fs/ubifs/sb.c
parentaf14a1ad792621942a03e4bd0e5f17b6e177e2e0 (diff)
UBIFS: use nicer 64-bit math
Instead of using do_div(), use better primitives from linux/math64.h. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Diffstat (limited to 'fs/ubifs/sb.c')
-rw-r--r--fs/ubifs/sb.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/fs/ubifs/sb.c b/fs/ubifs/sb.c
index c5da201ab54..e070c643d1b 100644
--- a/fs/ubifs/sb.c
+++ b/fs/ubifs/sb.c
@@ -28,6 +28,7 @@
#include "ubifs.h"
#include <linux/random.h>
+#include <linux/math64.h>
/*
* Default journal size in logical eraseblocks as a percent of total
@@ -80,7 +81,7 @@ static int create_default_filesystem(struct ubifs_info *c)
int err, tmp, jnl_lebs, log_lebs, max_buds, main_lebs, main_first;
int lpt_lebs, lpt_first, orph_lebs, big_lpt, ino_waste, sup_flags = 0;
int min_leb_cnt = UBIFS_MIN_LEB_CNT;
- uint64_t tmp64, main_bytes;
+ long long tmp64, main_bytes;
__le64 tmp_le64;
/* Some functions called from here depend on the @c->key_len filed */
@@ -160,7 +161,7 @@ static int create_default_filesystem(struct ubifs_info *c)
if (!sup)
return -ENOMEM;
- tmp64 = (uint64_t)max_buds * c->leb_size;
+ tmp64 = (long long)max_buds * c->leb_size;
if (big_lpt)
sup_flags |= UBIFS_FLG_BIGLPT;
@@ -187,9 +188,8 @@ static int create_default_filesystem(struct ubifs_info *c)
generate_random_uuid(sup->uuid);
- main_bytes = (uint64_t)main_lebs * c->leb_size;
- tmp64 = main_bytes * DEFAULT_RP_PERCENT;
- do_div(tmp64, 100);
+ main_bytes = (long long)main_lebs * c->leb_size;
+ tmp64 = div_u64(main_bytes * DEFAULT_RP_PERCENT, 100);
if (tmp64 > DEFAULT_MAX_RP_SIZE)
tmp64 = DEFAULT_MAX_RP_SIZE;
sup->rp_size = cpu_to_le64(tmp64);