On Jun 20, 2018, at 9:32 AM, Arnd Bergmann <arnd@xxxxxxxx> wrote: > > The mmp_time field is 64 bits wide, which is good, but calling > get_seconds() results in a 32-bit value on 32-bit architectures. Using > ktime_get_real_seconds() instead returns 64 bits everywhere. > > Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> Reviewed-by: Andreas Dilger <adilger@xxxxxxxxx> > --- > fs/ext4/mmp.c | 6 +++--- > 1 file changed, 3 insertions(+), 3 deletions(-) > > diff --git a/fs/ext4/mmp.c b/fs/ext4/mmp.c > index 27b9a76a0dfa..39da4eb48361 100644 > --- a/fs/ext4/mmp.c > +++ b/fs/ext4/mmp.c > @@ -147,7 +147,7 @@ static int kmmpd(void *data) > > mmp_block = le64_to_cpu(es->s_mmp_block); > mmp = (struct mmp_struct *)(bh->b_data); > - mmp->mmp_time = cpu_to_le64(get_seconds()); > + mmp->mmp_time = cpu_to_le64(ktime_get_real_seconds()); > /* > * Start with the higher mmp_check_interval and reduce it if > * the MMP block is being updated on time. > @@ -165,7 +165,7 @@ static int kmmpd(void *data) > seq = 1; > > mmp->mmp_seq = cpu_to_le32(seq); > - mmp->mmp_time = cpu_to_le64(get_seconds()); > + mmp->mmp_time = cpu_to_le64(ktime_get_real_seconds()); > last_update_time = jiffies; > > retval = write_mmp_block(sb, bh); > @@ -244,7 +244,7 @@ static int kmmpd(void *data) > * Unmount seems to be clean. > */ > mmp->mmp_seq = cpu_to_le32(EXT4_MMP_SEQ_CLEAN); > - mmp->mmp_time = cpu_to_le64(get_seconds()); > + mmp->mmp_time = cpu_to_le64(ktime_get_real_seconds()); > > retval = write_mmp_block(sb, bh); > > -- > 2.9.0 > Cheers, Andreas
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