[PATCH 3/5] ceph: use timespec64 for inode timestamp

From: Arnd Bergmann
Date: Wed Jun 20 2018 - 11:52:02 EST

Since the vfs structures are all using timespec64, we can now
change the internal representation, using ceph_encode_timespec64 and
ceph_decode_timespec64.

In case of ceph_aux_inode however, we need to avoid doing a memcmp()
on uninitialized padding data, so the members of the i_mtime field get
copied individually into 64-bit integers.

Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
fs/ceph/cache.c | 11 +++++---
fs/ceph/caps.c | 26 +++++++++---------
fs/ceph/dir.c | 6 ++---
fs/ceph/inode.c | 76 +++++++++++++++++++++++++---------------------------
fs/ceph/mds_client.c | 7 ++---
fs/ceph/snap.c | 6 ++---
fs/ceph/super.h | 9 ++++---
fs/ceph/xattr.c | 4 +--
8 files changed, 71 insertions(+), 74 deletions(-)

diff --git a/fs/ceph/cache.c b/fs/ceph/cache.c
index 362900e42424..1bf3502bdd6f 100644
--- a/fs/ceph/cache.c
+++ b/fs/ceph/cache.c
@@ -25,8 +25,9 @@
#include "cache.h"

struct ceph_aux_inode {
- u64 version;
- struct timespec mtime;
+ u64 version;
+ u64 mtime_sec;
+ u64 mtime_nsec;
};

struct fscache_netfs ceph_cache_netfs = {
@@ -130,7 +131,8 @@ static enum fscache_checkaux ceph_fscache_inode_check_aux(

memset(&aux, 0, sizeof(aux));
aux.version = ci->i_version;
- aux.mtime = timespec64_to_timespec(inode->i_mtime);
+ aux.mtime_sec = inode->i_mtime.tv_sec;
+ aux.mtime_nsec = inode->i_mtime.tv_nsec;

if (memcmp(data, &aux, sizeof(aux)) != 0)
return FSCACHE_CHECKAUX_OBSOLETE;
@@ -163,7 +165,8 @@ void ceph_fscache_register_inode_cookie(struct inode *inode)
if (!ci->fscache) {
memset(&aux, 0, sizeof(aux));
aux.version = ci->i_version;
- aux.mtime = timespec64_to_timespec(inode->i_mtime);
+ aux.mtime_sec = inode->i_mtime.tv_sec;
+ aux.mtime_nsec = inode->i_mtime.tv_nsec;
ci->fscache = fscache_acquire_cookie(fsc->fscache,
&ceph_fscache_inode_object_def,
&ci->i_vino, sizeof(ci->i_vino),
diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c
index 990258cbd836..f50cc008632a 100644
--- a/fs/ceph/caps.c
+++ b/fs/ceph/caps.c
@@ -1125,7 +1125,7 @@ struct cap_msg_args {
u64 flush_tid, oldest_flush_tid, size, max_size;
u64 xattr_version;
struct ceph_buffer *xattr_buf;
- struct timespec atime, mtime, ctime;
+ struct timespec64 atime, mtime, ctime;
int op, caps, wanted, dirty;
u32 seq, issue_seq, mseq, time_warp_seq;
u32 flags;
@@ -1146,7 +1146,7 @@ static int send_cap_msg(struct cap_msg_args *arg)
struct ceph_msg *msg;
void *p;
size_t extra_len;
- struct timespec zerotime = {0};
+ struct timespec64 zerotime = {0};
struct ceph_osd_client *osdc = &arg->session->s_mdsc->fsc->client->osdc;

dout("send_cap_msg %s %llx %llx caps %s wanted %s dirty %s"
@@ -1186,9 +1186,9 @@ static int send_cap_msg(struct cap_msg_args *arg)

fc->size = cpu_to_le64(arg->size);
fc->max_size = cpu_to_le64(arg->max_size);
- ceph_encode_timespec(&fc->mtime, &arg->mtime);
- ceph_encode_timespec(&fc->atime, &arg->atime);
- ceph_encode_timespec(&fc->ctime, &arg->ctime);
+ ceph_encode_timespec64(&fc->mtime, &arg->mtime);
+ ceph_encode_timespec64(&fc->atime, &arg->atime);
+ ceph_encode_timespec64(&fc->ctime, &arg->ctime);
fc->time_warp_seq = cpu_to_le32(arg->time_warp_seq);

fc->uid = cpu_to_le32(from_kuid(&init_user_ns, arg->uid));
@@ -1237,7 +1237,7 @@ static int send_cap_msg(struct cap_msg_args *arg)
* We just zero these out for now, as the MDS ignores them unless
* the requisite feature flags are set (which we don't do yet).
*/
- ceph_encode_timespec(p, &zerotime);
+ ceph_encode_timespec64(p, &zerotime);
p += sizeof(struct ceph_timespec);
ceph_encode_64(&p, 0);

@@ -1360,9 +1360,9 @@ static int __send_cap(struct ceph_mds_client *mdsc, struct ceph_cap *cap,
arg.xattr_buf = NULL;
}

- arg.mtime = timespec64_to_timespec(inode->i_mtime);
- arg.atime = timespec64_to_timespec(inode->i_atime);
- arg.ctime = timespec64_to_timespec(inode->i_ctime);
+ arg.mtime = inode->i_mtime;
+ arg.atime = inode->i_atime;
+ arg.ctime = inode->i_ctime;

arg.op = op;
arg.caps = cap->implemented;
@@ -3148,11 +3148,11 @@ static void handle_cap_grant(struct inode *inode,
}

if (newcaps & CEPH_CAP_ANY_RD) {
- struct timespec mtime, atime, ctime;
+ struct timespec64 mtime, atime, ctime;
/* ctime/mtime/atime? */
- ceph_decode_timespec(&mtime, &grant->mtime);
- ceph_decode_timespec(&atime, &grant->atime);
- ceph_decode_timespec(&ctime, &grant->ctime);
+ ceph_decode_timespec64(&mtime, &grant->mtime);
+ ceph_decode_timespec64(&atime, &grant->atime);
+ ceph_decode_timespec64(&ctime, &grant->ctime);
ceph_fill_file_time(inode, extra_info->issued,
le32_to_cpu(grant->time_warp_seq),
&ctime, &mtime, &atime);
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index 036ac0f3a393..4c3961717e77 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -1393,7 +1393,7 @@ static ssize_t ceph_read_dir(struct file *file, char __user *buf, size_t size,
" rfiles: %20lld\n"
" rsubdirs: %20lld\n"
"rbytes: %20lld\n"
- "rctime: %10ld.%09ld\n",
+ "rctime: %10lld.%09ld\n",
ci->i_files + ci->i_subdirs,
ci->i_files,
ci->i_subdirs,
@@ -1401,8 +1401,8 @@ static ssize_t ceph_read_dir(struct file *file, char __user *buf, size_t size,
ci->i_rfiles,
ci->i_rsubdirs,
ci->i_rbytes,
- (long)ci->i_rctime.tv_sec,
- (long)ci->i_rctime.tv_nsec);
+ ci->i_rctime.tv_sec,
+ ci->i_rctime.tv_nsec);
}

if (*ppos >= dfi->dir_info_len)
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index ee764ac352ab..d85f72bd585d 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -658,13 +658,10 @@ int ceph_fill_file_size(struct inode *inode, int issued,
}

void ceph_fill_file_time(struct inode *inode, int issued,
- u64 time_warp_seq, struct timespec *ctime,
- struct timespec *mtime, struct timespec *atime)
+ u64 time_warp_seq, struct timespec64 *ctime,
+ struct timespec64 *mtime, struct timespec64 *atime)
{
struct ceph_inode_info *ci = ceph_inode(inode);
- struct timespec64 ctime64 = timespec_to_timespec64(*ctime);
- struct timespec64 mtime64 = timespec_to_timespec64(*mtime);
- struct timespec64 atime64 = timespec_to_timespec64(*atime);
int warn = 0;

if (issued & (CEPH_CAP_FILE_EXCL|
@@ -673,39 +670,39 @@ void ceph_fill_file_time(struct inode *inode, int issued,
CEPH_CAP_AUTH_EXCL|
CEPH_CAP_XATTR_EXCL)) {
if (ci->i_version == 0 ||
- timespec64_compare(&ctime64, &inode->i_ctime) > 0) {
+ timespec64_compare(ctime, &inode->i_ctime) > 0) {
dout("ctime %lld.%09ld -> %lld.%09ld inc w/ cap\n",
- (long long)inode->i_ctime.tv_sec, inode->i_ctime.tv_nsec,
- (long long)ctime->tv_sec, ctime->tv_nsec);
- inode->i_ctime = ctime64;
+ inode->i_ctime.tv_sec, inode->i_ctime.tv_nsec,
+ ctime->tv_sec, ctime->tv_nsec);
+ inode->i_ctime = *ctime;
}
if (ci->i_version == 0 ||
ceph_seq_cmp(time_warp_seq, ci->i_time_warp_seq) > 0) {
/* the MDS did a utimes() */
dout("mtime %lld.%09ld -> %lld.%09ld "
"tw %d -> %d\n",
- (long long)inode->i_mtime.tv_sec, inode->i_mtime.tv_nsec,
- (long long)mtime->tv_sec, mtime->tv_nsec,
+ inode->i_mtime.tv_sec, inode->i_mtime.tv_nsec,
+ mtime->tv_sec, mtime->tv_nsec,
ci->i_time_warp_seq, (int)time_warp_seq);

- inode->i_mtime = mtime64;
- inode->i_atime = atime64;
+ inode->i_mtime = *mtime;
+ inode->i_atime = *atime;
ci->i_time_warp_seq = time_warp_seq;
} else if (time_warp_seq == ci->i_time_warp_seq) {
/* nobody did utimes(); take the max */
- if (timespec64_compare(&mtime64, &inode->i_mtime) > 0) {
+ if (timespec64_compare(mtime, &inode->i_mtime) > 0) {
dout("mtime %lld.%09ld -> %lld.%09ld inc\n",
- (long long)inode->i_mtime.tv_sec,
+ inode->i_mtime.tv_sec,
inode->i_mtime.tv_nsec,
- (long long)mtime->tv_sec, mtime->tv_nsec);
- inode->i_mtime = mtime64;
+ mtime->tv_sec, mtime->tv_nsec);
+ inode->i_mtime = *mtime;
}
- if (timespec64_compare(&atime64, &inode->i_atime) > 0) {
+ if (timespec64_compare(atime, &inode->i_atime) > 0) {
dout("atime %lld.%09ld -> %lld.%09ld inc\n",
- (long long)inode->i_atime.tv_sec,
+ inode->i_atime.tv_sec,
inode->i_atime.tv_nsec,
- (long long)atime->tv_sec, atime->tv_nsec);
- inode->i_atime = atime64;
+ atime->tv_sec, atime->tv_nsec);
+ inode->i_atime = *atime;
}
} else if (issued & CEPH_CAP_FILE_EXCL) {
/* we did a utimes(); ignore mds values */
@@ -715,9 +712,9 @@ void ceph_fill_file_time(struct inode *inode, int issued,
} else {
/* we have no write|excl caps; whatever the MDS says is true */
if (ceph_seq_cmp(time_warp_seq, ci->i_time_warp_seq) >= 0) {
- inode->i_ctime = ctime64;
- inode->i_mtime = mtime64;
- inode->i_atime = atime64;
+ inode->i_ctime = *ctime;
+ inode->i_mtime = *mtime;
+ inode->i_atime = *atime;
ci->i_time_warp_seq = time_warp_seq;
} else {
warn = 1;
@@ -743,7 +740,7 @@ static int fill_inode(struct inode *inode, struct page *locked_page,
struct ceph_mds_reply_inode *info = iinfo->in;
struct ceph_inode_info *ci = ceph_inode(inode);
int issued, new_issued, info_caps;
- struct timespec mtime, atime, ctime;
+ struct timespec64 mtime, atime, ctime;
struct ceph_buffer *xattr_blob = NULL;
struct ceph_string *pool_ns = NULL;
struct ceph_cap *new_cap = NULL;
@@ -823,9 +820,9 @@ static int fill_inode(struct inode *inode, struct page *locked_page,

if (new_version || (new_issued & CEPH_CAP_ANY_RD)) {
/* be careful with mtime, atime, size */
- ceph_decode_timespec(&atime, &info->atime);
- ceph_decode_timespec(&mtime, &info->mtime);
- ceph_decode_timespec(&ctime, &info->ctime);
+ ceph_decode_timespec64(&atime, &info->atime);
+ ceph_decode_timespec64(&mtime, &info->mtime);
+ ceph_decode_timespec64(&ctime, &info->ctime);
ceph_fill_file_time(inode, issued,
le32_to_cpu(info->time_warp_seq),
&ctime, &mtime, &atime);
@@ -872,7 +869,7 @@ static int fill_inode(struct inode *inode, struct page *locked_page,
ci->i_rbytes = le64_to_cpu(info->rbytes);
ci->i_rfiles = le64_to_cpu(info->rfiles);
ci->i_rsubdirs = le64_to_cpu(info->rsubdirs);
- ceph_decode_timespec(&ci->i_rctime, &info->rctime);
+ ceph_decode_timespec64(&ci->i_rctime, &info->rctime);
}
}

@@ -1953,7 +1950,6 @@ int __ceph_setattr(struct inode *inode, struct iattr *attr)
int err = 0;
int inode_dirty_flags = 0;
bool lock_snap_rwsem = false;
- struct timespec ts;

prealloc_cf = ceph_alloc_cap_flush();
if (!prealloc_cf)
@@ -2029,8 +2025,8 @@ int __ceph_setattr(struct inode *inode, struct iattr *attr)

if (ia_valid & ATTR_ATIME) {
dout("setattr %p atime %lld.%ld -> %lld.%ld\n", inode,
- (long long)inode->i_atime.tv_sec, inode->i_atime.tv_nsec,
- (long long)attr->ia_atime.tv_sec, attr->ia_atime.tv_nsec);
+ inode->i_atime.tv_sec, inode->i_atime.tv_nsec,
+ attr->ia_atime.tv_sec, attr->ia_atime.tv_nsec);
if (issued & CEPH_CAP_FILE_EXCL) {
ci->i_time_warp_seq++;
inode->i_atime = attr->ia_atime;
@@ -2042,8 +2038,8 @@ int __ceph_setattr(struct inode *inode, struct iattr *attr)
dirtied |= CEPH_CAP_FILE_WR;
} else if ((issued & CEPH_CAP_FILE_SHARED) == 0 ||
!timespec64_equal(&inode->i_atime, &attr->ia_atime)) {
- ts = timespec64_to_timespec(attr->ia_atime);
- ceph_encode_timespec(&req->r_args.setattr.atime, &ts);
+ ceph_encode_timespec64(&req->r_args.setattr.atime,
+ &attr->ia_atime);
mask |= CEPH_SETATTR_ATIME;
release |= CEPH_CAP_FILE_SHARED |
CEPH_CAP_FILE_RD | CEPH_CAP_FILE_WR;
@@ -2051,8 +2047,8 @@ int __ceph_setattr(struct inode *inode, struct iattr *attr)
}
if (ia_valid & ATTR_MTIME) {
dout("setattr %p mtime %lld.%ld -> %lld.%ld\n", inode,
- (long long)inode->i_mtime.tv_sec, inode->i_mtime.tv_nsec,
- (long long)attr->ia_mtime.tv_sec, attr->ia_mtime.tv_nsec);
+ inode->i_mtime.tv_sec, inode->i_mtime.tv_nsec,
+ attr->ia_mtime.tv_sec, attr->ia_mtime.tv_nsec);
if (issued & CEPH_CAP_FILE_EXCL) {
ci->i_time_warp_seq++;
inode->i_mtime = attr->ia_mtime;
@@ -2064,8 +2060,8 @@ int __ceph_setattr(struct inode *inode, struct iattr *attr)
dirtied |= CEPH_CAP_FILE_WR;
} else if ((issued & CEPH_CAP_FILE_SHARED) == 0 ||
!timespec64_equal(&inode->i_mtime, &attr->ia_mtime)) {
- ts = timespec64_to_timespec(attr->ia_mtime);
- ceph_encode_timespec(&req->r_args.setattr.mtime, &ts);
+ ceph_encode_timespec64(&req->r_args.setattr.mtime,
+ &attr->ia_mtime);
mask |= CEPH_SETATTR_MTIME;
release |= CEPH_CAP_FILE_SHARED |
CEPH_CAP_FILE_RD | CEPH_CAP_FILE_WR;
@@ -2096,8 +2092,8 @@ int __ceph_setattr(struct inode *inode, struct iattr *attr)
bool only = (ia_valid & (ATTR_SIZE|ATTR_MTIME|ATTR_ATIME|
ATTR_MODE|ATTR_UID|ATTR_GID)) == 0;
dout("setattr %p ctime %lld.%ld -> %lld.%ld (%s)\n", inode,
- (long long)inode->i_ctime.tv_sec, inode->i_ctime.tv_nsec,
- (long long)attr->ia_ctime.tv_sec, attr->ia_ctime.tv_nsec,
+ inode->i_ctime.tv_sec, inode->i_ctime.tv_nsec,
+ attr->ia_ctime.tv_sec, attr->ia_ctime.tv_nsec,
only ? "ctime only" : "ignored");
if (only) {
/*
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index 69c839316a7a..580644b04737 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -2961,15 +2961,12 @@ static int encode_caps_cb(struct inode *inode, struct ceph_cap *cap,
rec.v2.flock_len = (__force __le32)
((ci->i_ceph_flags & CEPH_I_ERROR_FILELOCK) ? 0 : 1);
} else {
- struct timespec ts;
rec.v1.cap_id = cpu_to_le64(cap->cap_id);
rec.v1.wanted = cpu_to_le32(__ceph_caps_wanted(ci));
rec.v1.issued = cpu_to_le32(cap->issued);
rec.v1.size = cpu_to_le64(inode->i_size);
- ts = timespec64_to_timespec(inode->i_mtime);
- ceph_encode_timespec(&rec.v1.mtime, &ts);
- ts = timespec64_to_timespec(inode->i_atime);
- ceph_encode_timespec(&rec.v1.atime, &ts);
+ ceph_encode_timespec64(&rec.v1.mtime, &inode->i_mtime);
+ ceph_encode_timespec64(&rec.v1.atime, &inode->i_atime);
rec.v1.snaprealm = cpu_to_le64(ci->i_snap_realm->ino);
rec.v1.pathbase = cpu_to_le64(pathbase);
}
diff --git a/fs/ceph/snap.c b/fs/ceph/snap.c
index af81555c14fd..041c27ea8de1 100644
--- a/fs/ceph/snap.c
+++ b/fs/ceph/snap.c
@@ -594,9 +594,9 @@ int __ceph_finish_cap_snap(struct ceph_inode_info *ci,

BUG_ON(capsnap->writing);
capsnap->size = inode->i_size;
- capsnap->mtime = timespec64_to_timespec(inode->i_mtime);
- capsnap->atime = timespec64_to_timespec(inode->i_atime);
- capsnap->ctime = timespec64_to_timespec(inode->i_ctime);
+ capsnap->mtime = inode->i_mtime;
+ capsnap->atime = inode->i_atime;
+ capsnap->ctime = inode->i_ctime;
capsnap->time_warp_seq = ci->i_time_warp_seq;
capsnap->truncate_size = ci->i_truncate_size;
capsnap->truncate_seq = ci->i_truncate_seq;
diff --git a/fs/ceph/super.h b/fs/ceph/super.h
index a7077a0c989f..d3eb70e2b527 100644
--- a/fs/ceph/super.h
+++ b/fs/ceph/super.h
@@ -193,7 +193,7 @@ struct ceph_cap_snap {
u64 xattr_version;

u64 size;
- struct timespec mtime, atime, ctime;
+ struct timespec64 mtime, atime, ctime;
u64 time_warp_seq;
u64 truncate_size;
u32 truncate_seq;
@@ -307,7 +307,7 @@ struct ceph_inode_info {
char *i_symlink;

/* for dirs */
- struct timespec i_rctime;
+ struct timespec64 i_rctime;
u64 i_rbytes, i_rfiles, i_rsubdirs;
u64 i_files, i_subdirs;

@@ -857,8 +857,9 @@ extern struct inode *ceph_get_snapdir(struct inode *parent);
extern int ceph_fill_file_size(struct inode *inode, int issued,
u32 truncate_seq, u64 truncate_size, u64 size);
extern void ceph_fill_file_time(struct inode *inode, int issued,
- u64 time_warp_seq, struct timespec *ctime,
- struct timespec *mtime, struct timespec *atime);
+ u64 time_warp_seq, struct timespec64 *ctime,
+ struct timespec64 *mtime,
+ struct timespec64 *atime);
extern int ceph_fill_trace(struct super_block *sb,
struct ceph_mds_request *req);
extern int ceph_readdir_prepopulate(struct ceph_mds_request *req,
diff --git a/fs/ceph/xattr.c b/fs/ceph/xattr.c
index 5bc8edb4c2a6..5cc8b94f8206 100644
--- a/fs/ceph/xattr.c
+++ b/fs/ceph/xattr.c
@@ -224,8 +224,8 @@ static size_t ceph_vxattrcb_dir_rbytes(struct ceph_inode_info *ci, char *val,
static size_t ceph_vxattrcb_dir_rctime(struct ceph_inode_info *ci, char *val,
size_t size)
{
- return snprintf(val, size, "%ld.09%ld", (long)ci->i_rctime.tv_sec,
- (long)ci->i_rctime.tv_nsec);
+ return snprintf(val, size, "%lld.09%ld", ci->i_rctime.tv_sec,
+ ci->i_rctime.tv_nsec);
}

/* quotas */
--
2.9.0