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Message-ID: <alpine.LFD.2.20.1606110135340.17937@casper.infradead.org>
Date: Sat, 11 Jun 2016 01:36:06 +0100 (BST)
From: James Simmons <jsimmons@...radead.org>
To: Deepa Dinamani <deepa.kernel@...il.com>
cc: linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
Arnd Bergmann <arnd@...db.de>, y2038@...ts.linaro.org,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Al Viro <viro@...iv.linux.org.uk>,
Thomas Gleixner <tglx@...utronix.de>,
Linus Torvalds <torvalds@...ux-foundation.org>,
lustre-devel@...ts.lustre.org
Subject: Re: [lustre-devel] [PATCH 11/21] drivers: staging: lustre: Replace
CURRENT_TIME with current_fs_time()
> CURRENT_TIME macro is not appropriate for filesystems as it
> doesn't use the right granularity for filesystem timestamps.
> Use current_fs_time() instead.
>
> This is also in preparation for the patch that transitions
> vfs timestamps to use 64 bit time and hence make them
> y2038 safe. As part of the effort current_fs_time() will be
> extended to do range checks. Hence, it is necessary for all
> file system timestamps to use current_fs_time().
>
> Also change format string for prints so that these are valid
> when vfs is transitioned to use 64 bit timestamps.
Acked-by: James Simmons <jsimmons@...radead.org>
> Signed-off-by: Deepa Dinamani <deepa.kernel@...il.com>
> Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> Cc: lustre-devel@...ts.lustre.org
> ---
> drivers/staging/lustre/lustre/llite/llite_lib.c | 17 +++++++++--------
> drivers/staging/lustre/lustre/llite/namei.c | 4 ++--
> drivers/staging/lustre/lustre/mdc/mdc_reint.c | 6 +++---
> .../staging/lustre/lustre/obdclass/linux/linux-obdo.c | 6 +++---
> drivers/staging/lustre/lustre/obdclass/obdo.c | 6 +++---
> drivers/staging/lustre/lustre/osc/osc_io.c | 2 +-
> 6 files changed, 21 insertions(+), 20 deletions(-)
>
> diff --git a/drivers/staging/lustre/lustre/llite/llite_lib.c b/drivers/staging/lustre/lustre/llite/llite_lib.c
> index 96c7e9f..919748f 100644
> --- a/drivers/staging/lustre/lustre/llite/llite_lib.c
> +++ b/drivers/staging/lustre/lustre/llite/llite_lib.c
> @@ -1219,6 +1219,7 @@ static int ll_setattr_done_writing(struct inode *inode,
> int ll_setattr_raw(struct dentry *dentry, struct iattr *attr, bool hsm_import)
> {
> struct inode *inode = d_inode(dentry);
> + struct super_block *sb = inode->i_sb;
> struct ll_inode_info *lli = ll_i2info(inode);
> struct md_op_data *op_data = NULL;
> struct md_open_data *mod = NULL;
> @@ -1258,23 +1259,23 @@ int ll_setattr_raw(struct dentry *dentry, struct iattr *attr, bool hsm_import)
>
> /* We mark all of the fields "set" so MDS/OST does not re-set them */
> if (attr->ia_valid & ATTR_CTIME) {
> - attr->ia_ctime = CURRENT_TIME;
> + attr->ia_ctime = current_fs_time(sb);
> attr->ia_valid |= ATTR_CTIME_SET;
> }
> if (!(attr->ia_valid & ATTR_ATIME_SET) &&
> (attr->ia_valid & ATTR_ATIME)) {
> - attr->ia_atime = CURRENT_TIME;
> + attr->ia_atime = current_fs_time(sb);
> attr->ia_valid |= ATTR_ATIME_SET;
> }
> if (!(attr->ia_valid & ATTR_MTIME_SET) &&
> (attr->ia_valid & ATTR_MTIME)) {
> - attr->ia_mtime = CURRENT_TIME;
> + attr->ia_mtime = current_fs_time(sb);
> attr->ia_valid |= ATTR_MTIME_SET;
> }
>
> if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
> - CDEBUG(D_INODE, "setting mtime %lu, ctime %lu, now = %llu\n",
> - LTIME_S(attr->ia_mtime), LTIME_S(attr->ia_ctime),
> + CDEBUG(D_INODE, "setting mtime %llu, ctime %llu, now = %llu\n",
> + (long long)LTIME_S(attr->ia_mtime), (long long)LTIME_S(attr->ia_ctime),
> (s64)ktime_get_real_seconds());
>
> /* We always do an MDS RPC, even if we're only changing the size;
> @@ -1564,9 +1565,9 @@ void ll_update_inode(struct inode *inode, struct lustre_md *md)
> }
> if (body->valid & OBD_MD_FLMTIME) {
> if (body->mtime > LTIME_S(inode->i_mtime)) {
> - CDEBUG(D_INODE, "setting ino %lu mtime from %lu to %llu\n",
> - inode->i_ino, LTIME_S(inode->i_mtime),
> - body->mtime);
> + CDEBUG(D_INODE, "setting ino %lu mtime from %llu to %llu\n",
> + inode->i_ino, (unsigned long long)LTIME_S(inode->i_mtime),
> + (unsigned long long)body->mtime);
> LTIME_S(inode->i_mtime) = body->mtime;
> }
> lli->lli_mtime = body->mtime;
> diff --git a/drivers/staging/lustre/lustre/llite/namei.c b/drivers/staging/lustre/lustre/llite/namei.c
> index 5eba0eb..48ed1ce 100644
> --- a/drivers/staging/lustre/lustre/llite/namei.c
> +++ b/drivers/staging/lustre/lustre/llite/namei.c
> @@ -731,8 +731,8 @@ static void ll_update_times(struct ptlrpc_request *request,
> LASSERT(body);
> if (body->valid & OBD_MD_FLMTIME &&
> body->mtime > LTIME_S(inode->i_mtime)) {
> - CDEBUG(D_INODE, "setting fid "DFID" mtime from %lu to %llu\n",
> - PFID(ll_inode2fid(inode)), LTIME_S(inode->i_mtime),
> + CDEBUG(D_INODE, "setting fid "DFID" mtime from %llu to %llu\n",
> + PFID(ll_inode2fid(inode)), (unsigned long long)LTIME_S(inode->i_mtime),
> body->mtime);
> LTIME_S(inode->i_mtime) = body->mtime;
> }
> diff --git a/drivers/staging/lustre/lustre/mdc/mdc_reint.c b/drivers/staging/lustre/lustre/mdc/mdc_reint.c
> index 4ef3db1..9980f3a 100644
> --- a/drivers/staging/lustre/lustre/mdc/mdc_reint.c
> +++ b/drivers/staging/lustre/lustre/mdc/mdc_reint.c
> @@ -143,9 +143,9 @@ int mdc_setattr(struct obd_export *exp, struct md_op_data *op_data,
> rpc_lock = obd->u.cli.cl_rpc_lock;
>
> if (op_data->op_attr.ia_valid & (ATTR_MTIME | ATTR_CTIME))
> - CDEBUG(D_INODE, "setting mtime %ld, ctime %ld\n",
> - LTIME_S(op_data->op_attr.ia_mtime),
> - LTIME_S(op_data->op_attr.ia_ctime));
> + CDEBUG(D_INODE, "setting mtime %lld, ctime %lld\n",
> + (long long)LTIME_S(op_data->op_attr.ia_mtime),
> + (long long)LTIME_S(op_data->op_attr.ia_ctime));
> mdc_setattr_pack(req, op_data, ea, ealen, ea2, ea2len);
>
> ptlrpc_request_set_replen(req);
> diff --git a/drivers/staging/lustre/lustre/obdclass/linux/linux-obdo.c b/drivers/staging/lustre/lustre/obdclass/linux/linux-obdo.c
> index b41b65e..ccd2b7b 100644
> --- a/drivers/staging/lustre/lustre/obdclass/linux/linux-obdo.c
> +++ b/drivers/staging/lustre/lustre/obdclass/linux/linux-obdo.c
> @@ -54,9 +54,9 @@ void obdo_refresh_inode(struct inode *dst, struct obdo *src, u32 valid)
>
> if (valid & (OBD_MD_FLCTIME | OBD_MD_FLMTIME))
> CDEBUG(D_INODE,
> - "valid %#llx, cur time %lu/%lu, new %llu/%llu\n",
> - src->o_valid, LTIME_S(dst->i_mtime),
> - LTIME_S(dst->i_ctime), src->o_mtime, src->o_ctime);
> + "valid %#llx, cur time %llu/%llu, new %llu/%llu\n",
> + src->o_valid, (unsigned long long)LTIME_S(dst->i_mtime),
> + (unsigned long long)LTIME_S(dst->i_ctime), src->o_mtime, src->o_ctime);
>
> if (valid & OBD_MD_FLATIME && src->o_atime > LTIME_S(dst->i_atime))
> LTIME_S(dst->i_atime) = src->o_atime;
> diff --git a/drivers/staging/lustre/lustre/obdclass/obdo.c b/drivers/staging/lustre/lustre/obdclass/obdo.c
> index 748e33f..973fa4c 100644
> --- a/drivers/staging/lustre/lustre/obdclass/obdo.c
> +++ b/drivers/staging/lustre/lustre/obdclass/obdo.c
> @@ -62,9 +62,9 @@ void obdo_from_inode(struct obdo *dst, struct inode *src, u32 valid)
> u32 newvalid = 0;
>
> if (valid & (OBD_MD_FLCTIME | OBD_MD_FLMTIME))
> - CDEBUG(D_INODE, "valid %x, new time %lu/%lu\n",
> - valid, LTIME_S(src->i_mtime),
> - LTIME_S(src->i_ctime));
> + CDEBUG(D_INODE, "valid %x, new time %llu/%llu\n",
> + valid, (unsigned long long)LTIME_S(src->i_mtime),
> + (unsigned long long)LTIME_S(src->i_ctime));
>
> if (valid & OBD_MD_FLATIME) {
> dst->o_atime = LTIME_S(src->i_atime);
> diff --git a/drivers/staging/lustre/lustre/osc/osc_io.c b/drivers/staging/lustre/lustre/osc/osc_io.c
> index d534b0e..99f69bb 100644
> --- a/drivers/staging/lustre/lustre/osc/osc_io.c
> +++ b/drivers/staging/lustre/lustre/osc/osc_io.c
> @@ -221,7 +221,7 @@ static void osc_page_touch_at(const struct lu_env *env,
> kms > loi->loi_kms ? "" : "not ", loi->loi_kms, kms,
> loi->loi_lvb.lvb_size);
>
> - attr->cat_mtime = attr->cat_ctime = LTIME_S(CURRENT_TIME);
> + attr->cat_mtime = attr->cat_ctime = ktime_get_real_seconds();
> valid = CAT_MTIME | CAT_CTIME;
> if (kms > loi->loi_kms) {
> attr->cat_kms = kms;
> --
> 1.9.1
>
> _______________________________________________
> lustre-devel mailing list
> lustre-devel@...ts.lustre.org
> http://lists.lustre.org/listinfo.cgi/lustre-devel-lustre.org
>
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