Y2038 June 2018

y2038@lists.linaro.org

69 participants
93 discussions

[PATCH] [v3] reiserfs: change j_timestamp type to time64_t

by Arnd Bergmann

This uses the deprecated time_t type but is write-only, and could be removed, but as Jeff explains, having a timestamp can be usefule for post-mortem analysis in crash dumps. In order to remove one of the last instances of time_t, this changes the type to time64_t, same as j_trans_start_time. Cc: Jan Kara <jack(a)suse.cz> Cc: Jeff Mahoney <jeffm(a)suse.com> Signed-off-by: Arnd Bergmann <arnd(a)arndb.de> --- This could replace "reiserfs: remove unused j_timestamp" if we decide that we want to keep that variable. Posting this patch as an alternative now, while waiting for Jeff to reply on how important this really is. --- fs/reiserfs/reiserfs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/reiserfs/reiserfs.h b/fs/reiserfs/reiserfs.h index 621b9a07080a..e5ca9ed79e54 100644 --- a/fs/reiserfs/reiserfs.h +++ b/fs/reiserfs/reiserfs.h @@ -271,7 +271,7 @@ struct reiserfs_journal_list { struct mutex j_commit_mutex; unsigned int j_trans_id; - time_t j_timestamp; + time64_t j_timestamp; /* write-only but useful for crash dump analysis */ struct reiserfs_list_bitmap *j_list_bitmap; struct buffer_head *j_commit_bh; /* commit buffer head */ struct reiserfs_journal_cnode *j_realblock; -- 2.9.0

6 years, 5 months

[PATCH] staging: android/vsoc: stop using 'timespec'

by Arnd Bergmann

The timespec structure suffers from the y2038 overflow and should not be used. This changes handle_vsoc_cond_wait() to use ktime_t directly. Signed-off-by: Arnd Bergmann <arnd(a)arndb.de> --- drivers/staging/android/vsoc.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/drivers/staging/android/vsoc.c b/drivers/staging/android/vsoc.c index 806beda1040b..22571abcaa4e 100644 --- a/drivers/staging/android/vsoc.c +++ b/drivers/staging/android/vsoc.c @@ -405,7 +405,7 @@ static int handle_vsoc_cond_wait(struct file *filp, struct vsoc_cond_wait *arg) int ret = 0; struct vsoc_device_region *region_p = vsoc_region_from_filep(filp); atomic_t *address = NULL; - struct timespec ts; + ktime_t wake_time; /* Ensure that the offset is aligned */ if (arg->offset & (sizeof(uint32_t) - 1)) @@ -433,14 +433,13 @@ static int handle_vsoc_cond_wait(struct file *filp, struct vsoc_cond_wait *arg) * We do things this way to flatten differences between 32 bit * and 64 bit timespecs. */ - ts.tv_sec = arg->wake_time_sec; - ts.tv_nsec = arg->wake_time_nsec; - - if (!timespec_valid(&ts)) + if (arg->wake_time_nsec >= NSEC_PER_SEC) return -EINVAL; + wake_time = ktime_set(arg->wake_time_sec, arg->wake_time_nsec); + hrtimer_init_on_stack(&to->timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); - hrtimer_set_expires_range_ns(&to->timer, timespec_to_ktime(ts), + hrtimer_set_expires_range_ns(&to->timer, wake_time, current->timer_slack_ns); hrtimer_init_sleeper(to, current); -- 2.9.0

6 years, 5 months

[PATCH 1/6] ext4: sysfs: print ext4_super_block fields as little-endian

by Arnd Bergmann

While working on extended rand for last_error/first_error timestamps, I noticed that the endianess is wrong, we access the little-endian fields in struct ext4_super_block as native-endian when we print them. This adds a special case in ext4_attr_show() and ext4_attr_store() to byteswap the superblock fields if needed. In older kernels, this code was part of super.c, it got moved to sysfs.c in linux-4.4. Cc: stable(a)vger.kernel.org Fixes: 52c198c6820f ("ext4: add sysfs entry showing whether the fs contains errors") Signed-off-by: Arnd Bergmann <arnd(a)arndb.de> --- fs/ext4/sysfs.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/fs/ext4/sysfs.c b/fs/ext4/sysfs.c index f34da0bb8f17..b970a200f20c 100644 --- a/fs/ext4/sysfs.c +++ b/fs/ext4/sysfs.c @@ -274,8 +274,12 @@ static ssize_t ext4_attr_show(struct kobject *kobj, case attr_pointer_ui: if (!ptr) return 0; - return snprintf(buf, PAGE_SIZE, "%u\n", - *((unsigned int *) ptr)); + if (a->attr_ptr == ptr_ext4_super_block_offset) + return snprintf(buf, PAGE_SIZE, "%u\n", + le32_to_cpup(ptr)); + else + return snprintf(buf, PAGE_SIZE, "%u\n", + *((unsigned int *) ptr)); case attr_pointer_atomic: if (!ptr) return 0; @@ -308,7 +312,10 @@ static ssize_t ext4_attr_store(struct kobject *kobj, ret = kstrtoul(skip_spaces(buf), 0, &t); if (ret) return ret; - *((unsigned int *) ptr) = t; + if (a->attr_ptr == ptr_ext4_super_block_offset) + *((__le32 *) ptr) = cpu_to_le32(t); + else + *((unsigned int *) ptr) = t; return len; case attr_inode_readahead: return inode_readahead_blks_store(sbi, buf, len); -- 2.9.0

6 years, 5 months

Re: [Y2038] [PATCH 6/6] [RFC] ext4: super: extend timestamps to 40 bits

by Arnd Bergmann

On Thu, Jun 21, 2018 at 7:46 PM, Andreas Dilger <adilger(a)dilger.ca> wrote: >> diff --git a/fs/ext4/super.c b/fs/ext4/super.c >> index 0c4c2201b3aa..2063d4e5ed08 100644 >> --- a/fs/ext4/super.c >> +++ b/fs/ext4/super.c >> @@ -312,6 +312,20 @@ void ext4_itable_unused_set(struct super_block *sb, >> bg->bg_itable_unused_hi = cpu_to_le16(count >> 16); >> } >> >> +static void ext4_update_tstamp(__le32 *lo, __u8 *hi) > > Would it be better to wrap this in a macro, something like: > > #define ext4_update_tstamp(es, tstamp) \ > __ext4_update_tstamp(&(es)->tstamp, &(es)->tstamp ## _hi) > #define ext4_get_tstamp(es, tstamp) \ > __ext4_get_tstamp(&(es)->tstamp, &(es)->tstamp ## _hi) > > So that it can be used in the callers more easily: > > ext4_update_tstamp(es, s_last_error_time); > time = ext4_get_tstamp(es, s_last_error_time); I generally try to avoid concatenating identifiers like this, as it makes it much harder to grep for where a particular symbol or struct member gets used. >> +{ >> + time64_t now = ktime_get_real_seconds(); >> + >> + now = clamp_val(now, 0, 0xffffffffffull); > > Long strings of "0xfff..." are hard to get correct. This looks right, > but it may be easier to be sure it is correct with something like: > > /* timestamps have a 32-bit low field and 8-bit high field */ > now = clamp_val(now, 0, (1ULL << 40) - 1); Yes, good idea. I'm surprised we don't have a generic macro for that yet (or maybe I just couldn't find it) >> @@ -249,6 +251,12 @@ static void *calc_ptr(struct ext4_attr *a, struct ext4_sb_info *sbi) >> return NULL; >> } >> >> +static ssize_t print_time(char *buf, __le32 lo, __u8 hi) > > It would probably be more consistent to name this "print_tstamp()" > since it isn't strictly a "time" as one would expect. Ok. >> +{ >> + return snprintf(buf, PAGE_SIZE, "%lld", >> + ((time64_t)hi << 32) + le32_to_cpu(lo)); >> +} > > Similarly, wrap this with: > > #define print_tstamp(buf, es, tstamp) \ > __print_tstamp(buf, &(es)->tstamp, &(es)->tstamp ## _hi) Ok. I'll integrate all of the above and post as a non-RFC patch then after some testing. Arnd

6 years, 5 months

Re: [Y2038] [PATCH 3/6] ext4: use ktime_get_real_seconds for i_dtime

by Arnd Bergmann

On Thu, Jun 21, 2018 at 7:27 PM, Andreas Dilger <adilger(a)dilger.ca> wrote: > On Jun 20, 2018, at 9:33 AM, Arnd Bergmann <arnd(a)arndb.de> wrote: >> >> We only care about the low 32-bit for i_dtime as explained in commit >> b5f515735bea ("ext4: avoid Y2038 overflow in recently_deleted()"), so >> the use of get_seconds() is correct here, but that function is getting >> removed in the process of the y2038 fixes, so let's use the modern >> ktime_get_real_seconds() here. >> >> Signed-off-by: Arnd Bergmann <arnd(a)arndb.de> > > Looks OK, one minor cleanup possible. > > Reviewed-by: Andreas Dilger <adilger(a)dilger.ca> >> ext4_orphan_del(handle, inode); >> - EXT4_I(inode)->i_dtime = get_seconds(); >> + EXT4_I(inode)->i_dtime = ktime_get_real_seconds(); > > Not strictly necessary, but it might be good from a code clarity POV > to use: > > EXT4_I(inode)->i_dtime = (__u32)ktime_get_real_seconds(); > > so that it is more clear we are aware that this is being truncated > to a 32-bit value. Right, I've been a bit inconsistent here across file systems, I've done this in some other ones, using either a cast or a lower_32_bits() function call. Changed it as you suggested here now. Arnd

6 years, 5 months

Re: [Y2038] [PATCH 1/6] ext4: sysfs: print ext4_super_block fields as little-endian

by Arnd Bergmann

On Thu, Jun 21, 2018 at 7:49 PM, Andreas Dilger <adilger(a)dilger.ca> wrote: > On Jun 20, 2018, at 9:32 AM, Arnd Bergmann <arnd(a)arndb.de> wrote: >> >> While working on extended rand for last_error/first_error timestamps, >> I noticed that the endianess is wrong, we access the little-endian >> fields in struct ext4_super_block as native-endian when we print them. >> >> This adds a special case in ext4_attr_show() and ext4_attr_store() >> to byteswap the superblock fields if needed. >> >> In older kernels, this code was part of super.c, it got moved to sysfs.c >> in linux-4.4. >> >> Cc: stable(a)vger.kernel.org >> Fixes: 52c198c6820f ("ext4: add sysfs entry showing whether the fs contains errors") >> Signed-off-by: Arnd Bergmann <arnd(a)arndb.de> > > I was wondering why this didn't just use le32_to_cpu() all the time, > but I see that these functions are being used for both ext4_super_block > (on-disk) fields, as well as ext4_sb_info (in-memory) fields. A bit > ugly, but I don't think there is a better solution. > > Reviewed-by: Andreas Dilger <adilger(a)dilger.ca> One alternative that I considered was to just do away with helpers for the ext4_super_block structure and only use them for ext4_sb_info, especially after the last patch that changes this again. However, as a bugfix for stable backports it seemed best to keep the change as simple as possible. Thanks for the review, Arnd

6 years, 5 months

[PATCH v2 4/5] ceph: use timespec64 for r_mtime

by Arnd Bergmann

The request mtime field is used all over ceph, and is currently represented as a 'timespec' structure in Linux. This changes it to timespec64 to allow times beyond 2038, modifying all users at the same time. Signed-off-by: Arnd Bergmann <arnd(a)arndb.de> --- v2: undo an unneeded change pointed out by Yan Zheng. Resending only this patch for now, let me know if you would like to see the entire series reposted instead. --- drivers/block/rbd.c | 2 +- fs/ceph/addr.c | 12 ++++++------ fs/ceph/file.c | 8 ++++---- include/linux/ceph/osd_client.h | 6 +++--- net/ceph/osd_client.c | 8 ++++---- 5 files changed, 18 insertions(+), 18 deletions(-) diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index fa0729c1e776..356936333cd9 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -1452,7 +1452,7 @@ static void rbd_osd_req_format_write(struct rbd_obj_request *obj_request) struct ceph_osd_request *osd_req = obj_request->osd_req; osd_req->r_flags = CEPH_OSD_FLAG_WRITE; - ktime_get_real_ts(&osd_req->r_mtime); + ktime_get_real_ts64(&osd_req->r_mtime); osd_req->r_data_offset = obj_request->ex.oe_off; } diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c index 292b3d72d725..d44d51e69e76 100644 --- a/fs/ceph/addr.c +++ b/fs/ceph/addr.c @@ -574,7 +574,7 @@ static u64 get_writepages_data_length(struct inode *inode, */ static int writepage_nounlock(struct page *page, struct writeback_control *wbc) { - struct timespec ts; + struct timespec64 ts; struct inode *inode; struct ceph_inode_info *ci; struct ceph_fs_client *fsc; @@ -625,7 +625,7 @@ static int writepage_nounlock(struct page *page, struct writeback_control *wbc) set_bdi_congested(inode_to_bdi(inode), BLK_RW_ASYNC); set_page_writeback(page); - ts = timespec64_to_timespec(inode->i_mtime); + ts = inode->i_mtime; err = ceph_osdc_writepages(&fsc->client->osdc, ceph_vino(inode), &ci->i_layout, snapc, page_off, len, ceph_wbc.truncate_seq, @@ -1134,7 +1134,7 @@ static int ceph_writepages_start(struct address_space *mapping, pages = NULL; } - req->r_mtime = timespec64_to_timespec(inode->i_mtime); + req->r_mtime = inode->i_mtime; rc = ceph_osdc_start_request(&fsc->client->osdc, req, true); BUG_ON(rc); req = NULL; @@ -1734,7 +1734,7 @@ int ceph_uninline_data(struct file *filp, struct page *locked_page) goto out; } - req->r_mtime = timespec64_to_timespec(inode->i_mtime); + req->r_mtime = inode->i_mtime; err = ceph_osdc_start_request(&fsc->client->osdc, req, false); if (!err) err = ceph_osdc_wait_request(&fsc->client->osdc, req); @@ -1776,7 +1776,7 @@ int ceph_uninline_data(struct file *filp, struct page *locked_page) goto out_put; } - req->r_mtime = timespec64_to_timespec(inode->i_mtime); + req->r_mtime = inode->i_mtime; err = ceph_osdc_start_request(&fsc->client->osdc, req, false); if (!err) err = ceph_osdc_wait_request(&fsc->client->osdc, req); @@ -1937,7 +1937,7 @@ static int __ceph_pool_perm_get(struct ceph_inode_info *ci, 0, false, true); err = ceph_osdc_start_request(&fsc->client->osdc, rd_req, false); - wr_req->r_mtime = timespec64_to_timespec(ci->vfs_inode.i_mtime); + wr_req->r_mtime = ci->vfs_inode.i_mtime; err2 = ceph_osdc_start_request(&fsc->client->osdc, wr_req, false); if (!err) diff --git a/fs/ceph/file.c b/fs/ceph/file.c index ad0bed99b1d5..2f3a30ca94bf 100644 --- a/fs/ceph/file.c +++ b/fs/ceph/file.c @@ -721,7 +721,7 @@ struct ceph_aio_request { struct list_head osd_reqs; unsigned num_reqs; atomic_t pending_reqs; - struct timespec mtime; + struct timespec64 mtime; struct ceph_cap_flush *prealloc_cf; }; @@ -923,7 +923,7 @@ ceph_direct_read_write(struct kiocb *iocb, struct iov_iter *iter, int num_pages = 0; int flags; int ret; - struct timespec mtime = timespec64_to_timespec(current_time(inode)); + struct timespec64 mtime = current_time(inode); size_t count = iov_iter_count(iter); loff_t pos = iocb->ki_pos; bool write = iov_iter_rw(iter) == WRITE; @@ -1131,7 +1131,7 @@ ceph_sync_write(struct kiocb *iocb, struct iov_iter *from, loff_t pos, int flags; int ret; bool check_caps = false; - struct timespec mtime = timespec64_to_timespec(current_time(inode)); + struct timespec64 mtime = current_time(inode); size_t count = iov_iter_count(from); if (ceph_snap(file_inode(file)) != CEPH_NOSNAP) @@ -1663,7 +1663,7 @@ static int ceph_zero_partial_object(struct inode *inode, goto out; } - req->r_mtime = timespec64_to_timespec(inode->i_mtime); + req->r_mtime = inode->i_mtime; ret = ceph_osdc_start_request(&fsc->client->osdc, req, false); if (!ret) { ret = ceph_osdc_wait_request(&fsc->client->osdc, req); diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h index 0d6ee04b4c41..2e6611c1e9a0 100644 --- a/include/linux/ceph/osd_client.h +++ b/include/linux/ceph/osd_client.h @@ -199,7 +199,7 @@ struct ceph_osd_request { /* set by submitter */ u64 r_snapid; /* for reads, CEPH_NOSNAP o/w */ struct ceph_snap_context *r_snapc; /* for writes */ - struct timespec r_mtime; /* ditto */ + struct timespec64 r_mtime; /* ditto */ u64 r_data_offset; /* ditto */ bool r_linger; /* don't resend on failure */ @@ -253,7 +253,7 @@ struct ceph_osd_linger_request { struct ceph_osd_request_target t; u32 map_dne_bound; - struct timespec mtime; + struct timespec64 mtime; struct kref kref; struct mutex lock; @@ -508,7 +508,7 @@ extern int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_snap_context *sc, u64 off, u64 len, u32 truncate_seq, u64 truncate_size, - struct timespec *mtime, + struct timespec64 *mtime, struct page **pages, int nr_pages); /* watch/notify */ diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c index a00c74f1154e..a87a021ca9d0 100644 --- a/net/ceph/osd_client.c +++ b/net/ceph/osd_client.c @@ -1978,7 +1978,7 @@ static void encode_request_partial(struct ceph_osd_request *req, p += sizeof(struct ceph_blkin_trace_info); ceph_encode_32(&p, 0); /* client_inc, always 0 */ - ceph_encode_timespec(p, &req->r_mtime); + ceph_encode_timespec64(p, &req->r_mtime); p += sizeof(struct ceph_timespec); encode_oloc(&p, end, &req->r_t.target_oloc); @@ -4512,7 +4512,7 @@ ceph_osdc_watch(struct ceph_osd_client *osdc, ceph_oid_copy(&lreq->t.base_oid, oid); ceph_oloc_copy(&lreq->t.base_oloc, oloc); lreq->t.flags = CEPH_OSD_FLAG_WRITE; - ktime_get_real_ts(&lreq->mtime); + ktime_get_real_ts64(&lreq->mtime); lreq->reg_req = alloc_linger_request(lreq); if (!lreq->reg_req) { @@ -4570,7 +4570,7 @@ int ceph_osdc_unwatch(struct ceph_osd_client *osdc, ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); req->r_flags = CEPH_OSD_FLAG_WRITE; - ktime_get_real_ts(&req->r_mtime); + ktime_get_real_ts64(&req->r_mtime); osd_req_op_watch_init(req, 0, lreq->linger_id, CEPH_OSD_WATCH_OP_UNWATCH); @@ -5136,7 +5136,7 @@ int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, struct ceph_snap_context *snapc, u64 off, u64 len, u32 truncate_seq, u64 truncate_size, - struct timespec *mtime, + struct timespec64 *mtime, struct page **pages, int num_pages) { struct ceph_osd_request *req; -- 2.9.0

6 years, 5 months

[PATCH] gfs2: call ktime_get_coarse_real_ts64() directly

by Arnd Bergmann

current_kernel_time64() is now just a deprecated wrapper around ktime_get_coarse_real_ts64(), so let's just call that directly. Signed-off-by: Arnd Bergmann <arnd(a)arndb.de> --- fs/gfs2/log.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c index 0248835625f1..c7b1c0f75a55 100644 --- a/fs/gfs2/log.c +++ b/fs/gfs2/log.c @@ -689,7 +689,7 @@ void gfs2_write_log_header(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd, hash = ~crc32(~0, lh, LH_V1_SIZE); lh->lh_hash = cpu_to_be32(hash); - tv = current_kernel_time64(); + ktime_get_coarse_real_ts64(&tv); lh->lh_nsec = cpu_to_be32(tv.tv_nsec); lh->lh_sec = cpu_to_be64(tv.tv_sec); addr = gfs2_log_bmap(sdp); -- 2.9.0

6 years, 5 months

[PATCH 1/5] ceph: use timespec64 in for keepalive

by Arnd Bergmann

ceph_con_keepalive_expired() is the last user of timespec_add() and some of the last uses of ktime_get_real_ts(). Replacing this with timespec64 based interfaces lets us remove that deprecated API. I'm introducing new ceph_encode_timespec64()/ceph_decode_timespec64() here that take timespec64 structures and convert to/from ceph_timespec, which is defined to have an unsigned 32-bit tv_sec member. This extends the range of valid times to year 2106, avoiding the year 2038 overflow. The ceph file system portion still uses the old functions for inode timestamps, this will be done separately after the VFS layer is converted. Signed-off-by: Arnd Bergmann <arnd(a)arndb.de> --- include/linux/ceph/decode.h | 20 +++++++++++++++++++- include/linux/ceph/messenger.h | 2 +- net/ceph/auth_x.c | 14 +++++++------- net/ceph/auth_x.h | 2 +- net/ceph/cls_lock_client.c | 4 ++-- net/ceph/messenger.c | 20 ++++++++++---------- 6 files changed, 40 insertions(+), 22 deletions(-) diff --git a/include/linux/ceph/decode.h b/include/linux/ceph/decode.h index d143ac8879c6..45efe09fb7b4 100644 --- a/include/linux/ceph/decode.h +++ b/include/linux/ceph/decode.h @@ -194,8 +194,26 @@ ceph_decode_skip_n(p, end, sizeof(u8), bad) } while (0) /* - * struct ceph_timespec <-> struct timespec + * struct ceph_timespec <-> struct timespec64 */ +static inline void ceph_decode_timespec64(struct timespec64 *ts, + const struct ceph_timespec *tv) +{ + /* + * this will still overflow in year 2106. We could extend + * the protocol to steal two more bits from tv_nsec to + * add three more 136 year epochs after that the way ext4 + * does if necessary. + */ + ts->tv_sec = (time64_t)le32_to_cpu(tv->tv_sec); + ts->tv_nsec = (long)le32_to_cpu(tv->tv_nsec); +} +static inline void ceph_encode_timespec64(struct ceph_timespec *tv, + const struct timespec64 *ts) +{ + tv->tv_sec = cpu_to_le32((u32)ts->tv_sec); + tv->tv_nsec = cpu_to_le32((u32)ts->tv_nsec); +} static inline void ceph_decode_timespec(struct timespec *ts, const struct ceph_timespec *tv) { diff --git a/include/linux/ceph/messenger.h b/include/linux/ceph/messenger.h index c7dfcb8a1fb2..a718b877c597 100644 --- a/include/linux/ceph/messenger.h +++ b/include/linux/ceph/messenger.h @@ -330,7 +330,7 @@ struct ceph_connection { int in_base_pos; /* bytes read */ __le64 in_temp_ack; /* for reading an ack */ - struct timespec last_keepalive_ack; /* keepalive2 ack stamp */ + struct timespec64 last_keepalive_ack; /* keepalive2 ack stamp */ struct delayed_work work; /* send|recv work */ unsigned long delay; /* current delay interval */ diff --git a/net/ceph/auth_x.c b/net/ceph/auth_x.c index 2f4a1baf5f52..b05c3a540a5a 100644 --- a/net/ceph/auth_x.c +++ b/net/ceph/auth_x.c @@ -149,12 +149,12 @@ static int process_one_ticket(struct ceph_auth_client *ac, void *dp, *dend; int dlen; char is_enc; - struct timespec validity; + struct timespec64 validity; void *tp, *tpend; void **ptp; struct ceph_crypto_key new_session_key = { 0 }; struct ceph_buffer *new_ticket_blob; - unsigned long new_expires, new_renew_after; + time64_t new_expires, new_renew_after; u64 new_secret_id; int ret; @@ -189,11 +189,11 @@ static int process_one_ticket(struct ceph_auth_client *ac, if (ret) goto out; - ceph_decode_timespec(&validity, dp); + ceph_decode_timespec64(&validity, dp); dp += sizeof(struct ceph_timespec); - new_expires = get_seconds() + validity.tv_sec; + new_expires = ktime_get_real_seconds() + validity.tv_sec; new_renew_after = new_expires - (validity.tv_sec / 4); - dout(" expires=%lu renew_after=%lu\n", new_expires, + dout(" expires=%llu renew_after=%llu\n", new_expires, new_renew_after); /* ticket blob for service */ @@ -385,13 +385,13 @@ static bool need_key(struct ceph_x_ticket_handler *th) if (!th->have_key) return true; - return get_seconds() >= th->renew_after; + return ktime_get_real_seconds() >= th->renew_after; } static bool have_key(struct ceph_x_ticket_handler *th) { if (th->have_key) { - if (get_seconds() >= th->expires) + if (ktime_get_real_seconds() >= th->expires) th->have_key = false; } diff --git a/net/ceph/auth_x.h b/net/ceph/auth_x.h index 454cb54568af..57ba99f7736f 100644 --- a/net/ceph/auth_x.h +++ b/net/ceph/auth_x.h @@ -22,7 +22,7 @@ struct ceph_x_ticket_handler { u64 secret_id; struct ceph_buffer *ticket_blob; - unsigned long renew_after, expires; + time64_t renew_after, expires; }; #define CEPHX_AU_ENC_BUF_LEN 128 /* big enough for encrypted blob */ diff --git a/net/ceph/cls_lock_client.c b/net/ceph/cls_lock_client.c index 8d2032b2f225..2105a6eaa66c 100644 --- a/net/ceph/cls_lock_client.c +++ b/net/ceph/cls_lock_client.c @@ -32,7 +32,7 @@ int ceph_cls_lock(struct ceph_osd_client *osdc, int desc_len = strlen(desc); void *p, *end; struct page *lock_op_page; - struct timespec mtime; + struct timespec64 mtime; int ret; lock_op_buf_size = name_len + sizeof(__le32) + @@ -63,7 +63,7 @@ int ceph_cls_lock(struct ceph_osd_client *osdc, ceph_encode_string(&p, end, desc, desc_len); /* only support infinite duration */ memset(&mtime, 0, sizeof(mtime)); - ceph_encode_timespec(p, &mtime); + ceph_encode_timespec64(p, &mtime); p += sizeof(struct ceph_timespec); ceph_encode_8(&p, flags); diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c index c6413c360771..3f6336248509 100644 --- a/net/ceph/messenger.c +++ b/net/ceph/messenger.c @@ -1417,11 +1417,11 @@ static void prepare_write_keepalive(struct ceph_connection *con) dout("prepare_write_keepalive %p\n", con); con_out_kvec_reset(con); if (con->peer_features & CEPH_FEATURE_MSGR_KEEPALIVE2) { - struct timespec now; + struct timespec64 now; - ktime_get_real_ts(&now); + ktime_get_real_ts64(&now); con_out_kvec_add(con, sizeof(tag_keepalive2), &tag_keepalive2); - ceph_encode_timespec(&con->out_temp_keepalive2, &now); + ceph_encode_timespec64(&con->out_temp_keepalive2, &now); con_out_kvec_add(con, sizeof(con->out_temp_keepalive2), &con->out_temp_keepalive2); } else { @@ -2555,7 +2555,7 @@ static int read_keepalive_ack(struct ceph_connection *con) int ret = read_partial(con, size, size, &ceph_ts); if (ret <= 0) return ret; - ceph_decode_timespec(&con->last_keepalive_ack, &ceph_ts); + ceph_decode_timespec64(&con->last_keepalive_ack, &ceph_ts); prepare_read_tag(con); return 1; } @@ -3223,12 +3223,12 @@ bool ceph_con_keepalive_expired(struct ceph_connection *con, { if (interval > 0 && (con->peer_features & CEPH_FEATURE_MSGR_KEEPALIVE2)) { - struct timespec now; - struct timespec ts; - ktime_get_real_ts(&now); - jiffies_to_timespec(interval, &ts); - ts = timespec_add(con->last_keepalive_ack, ts); - return timespec_compare(&now, &ts) >= 0; + struct timespec64 now; + struct timespec64 ts; + ktime_get_real_ts64(&now); + jiffies_to_timespec64(interval, &ts); + ts = timespec64_add(con->last_keepalive_ack, ts); + return timespec64_compare(&now, &ts) >= 0; } return false; } -- 2.9.0

6 years, 5 months

[PATCH 1/3] btrfs: use monotonic time for transaction handling

by Arnd Bergmann

get_seconds() is deprecated because of the overflow of 32-bit times, and it's not the best choice for measuring time intervals because it can go backwards or jump due to settimeofday() or leap seconds. This changes the transaction handling to instead use ktime_get_seconds(), which returns a CLOCK_MONOTONIC timestamp that has neither of those problems. Signed-off-by: Arnd Bergmann <arnd(a)arndb.de> --- fs/btrfs/disk-io.c | 4 ++-- fs/btrfs/transaction.c | 2 +- fs/btrfs/transaction.h | 2 +- 3 files changed, 4 insertions(+), 4 deletions(-) diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 205092dc9390..bf0717f2824d 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -1803,7 +1803,7 @@ static int transaction_kthread(void *arg) struct btrfs_trans_handle *trans; struct btrfs_transaction *cur; u64 transid; - unsigned long now; + time64_t now; unsigned long delay; bool cannot_commit; @@ -1819,7 +1819,7 @@ static int transaction_kthread(void *arg) goto sleep; } - now = get_seconds(); + now = ktime_get_seconds(); if (cur->state < TRANS_STATE_BLOCKED && !test_bit(BTRFS_FS_NEED_ASYNC_COMMIT, &fs_info->flags) && (now < cur->start_time || diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c index ff5f6c719976..ebe50dfb8947 100644 --- a/fs/btrfs/transaction.c +++ b/fs/btrfs/transaction.c @@ -241,7 +241,7 @@ static noinline int join_transaction(struct btrfs_fs_info *fs_info, refcount_set(&cur_trans->use_count, 2); atomic_set(&cur_trans->pending_ordered, 0); cur_trans->flags = 0; - cur_trans->start_time = get_seconds(); + cur_trans->start_time = ktime_get_seconds(); memset(&cur_trans->delayed_refs, 0, sizeof(cur_trans->delayed_refs)); diff --git a/fs/btrfs/transaction.h b/fs/btrfs/transaction.h index 94439482a0ec..4cbb1b55387d 100644 --- a/fs/btrfs/transaction.h +++ b/fs/btrfs/transaction.h @@ -48,7 +48,7 @@ struct btrfs_transaction { int aborted; struct list_head list; struct extent_io_tree dirty_pages; - unsigned long start_time; + time64_t start_time; wait_queue_head_t writer_wait; wait_queue_head_t commit_wait; wait_queue_head_t pending_wait; -- 2.9.0

6 years, 5 months

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