diff options
| author |   DengChao <chao.deng@linaro.org> | 2015-11-12 21:40:41 +0800 |
|---|---|---|
| committer |   Al Viro <viro@zeniv.linux.org.uk> | 2016-01-09 02:59:19 -0500 |
| commit | db39c16724d019029d7533561754d92bef1b389a (patch) | |
| tree | 9db0304601bce4a0704f721105dc756bcec0d649 /fs/affs/amigaffs.c | |
| parent | fs/9p: use fscache mutex rather than spinlock (diff) | |
| download | linux-dev-db39c16724d019029d7533561754d92bef1b389a.tar.xz linux-dev-db39c16724d019029d7533561754d92bef1b389a.zip | |
fs:affs:Replace time_t with time64_t
The affs code uses "time_t" and "get_seconds()". This will cause
problems on 32-bit architectures in 2038 when time_t overflows.
This patch replaces them with "time64_t" and
"ktime_get_real_seconds()". This patch introduces expensive 64-bit
divsion in "secs_to_datestamp()", considering this function is not
called so often, the cost should be acceptable.
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: DengChao <chao.deng@linaro.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/affs/amigaffs.c')
| -rw-r--r-- | fs/affs/amigaffs.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/fs/affs/amigaffs.c b/fs/affs/amigaffs.c index 5fa92bc790ef..d6c7a51c93e4 100644 --- a/fs/affs/amigaffs.c +++ b/fs/affs/amigaffs.c @@ -8,6 +8,7 @@ * Please send bug reports to: hjw@zvw.de */ +#include <linux/math64.h> #include "affs.h" /* @@ -366,22 +367,22 @@ affs_fix_checksum(struct super_block *sb, struct buffer_head *bh) } void -secs_to_datestamp(time_t secs, struct affs_date *ds) +secs_to_datestamp(time64_t secs, struct affs_date *ds) { u32 days; u32 minute; + s32 rem; secs -= sys_tz.tz_minuteswest * 60 + ((8 * 365 + 2) * 24 * 60 * 60); if (secs < 0) secs = 0; - days = secs / 86400; - secs -= days * 86400; - minute = secs / 60; - secs -= minute * 60; + days = div_s64_rem(secs, 86400, &rem); + minute = rem / 60; + rem -= minute * 60; ds->days = cpu_to_be32(days); ds->mins = cpu_to_be32(minute); - ds->ticks = cpu_to_be32(secs * 50); + ds->ticks = cpu_to_be32(rem * 50); } umode_t |