[PATCH 35/39] staging/lustre/hsm: Add support to drop all pages for ll_data_version
From: Peng Tao
Date: Thu Nov 14 2013 - 11:41:44 EST
From: Jinshan Xiong <jinshan.xiong@xxxxxxxxx>
This will be used by HSM release to get data version and drop all
caching pages from all clients, before sending IT_RELEASE close
REQ to MDT.
Lustre-change: http://review.whamcloud.com/6794
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3647
Signed-off-by: Jinshan Xiong <jinshan.xiong@xxxxxxxxx>
Reviewed-by: John L. Hammond <john.hammond@xxxxxxxxx>
Reviewed-by: Aurelien Degremont <aurelien.degremont@xxxxxx>
Reviewed-by: Oleg Drokin <oleg.drokin@xxxxxxxxx>
Signed-off-by: Peng Tao <bergwolf@xxxxxxxxx>
Signed-off-by: Andreas Dilger <andreas.dilger@xxxxxxxxx>
---
.../lustre/lustre/include/lustre/lustre_idl.h | 1 +
.../lustre/lustre/include/lustre/lustre_user.h | 4 +--
drivers/staging/lustre/lustre/llite/dir.c | 5 ++-
drivers/staging/lustre/lustre/llite/file.c | 36 ++++++++++++--------
.../staging/lustre/lustre/llite/llite_internal.h | 2 +-
drivers/staging/lustre/lustre/lov/lov_merge.c | 13 ++++++-
6 files changed, 40 insertions(+), 21 deletions(-)
diff --git a/drivers/staging/lustre/lustre/include/lustre/lustre_idl.h b/drivers/staging/lustre/lustre/include/lustre/lustre_idl.h
index 15f70dc..15ae8e8 100644
--- a/drivers/staging/lustre/lustre/include/lustre/lustre_idl.h
+++ b/drivers/staging/lustre/lustre/include/lustre/lustre_idl.h
@@ -1506,6 +1506,7 @@ enum obdo_flags {
* clients prior than 2.2 */
OBD_FL_RECOV_RESEND = 0x00080000, /* recoverable resent */
OBD_FL_NOSPC_BLK = 0x00100000, /* no more block space on OST */
+ OBD_FL_FLUSH = 0x00200000, /* flush pages on the OST */
/* Note that while these checksum values are currently separate bits,
* in 2.x we can actually allow all values from 1-31 if we wanted. */
diff --git a/drivers/staging/lustre/lustre/include/lustre/lustre_user.h b/drivers/staging/lustre/lustre/include/lustre/lustre_user.h
index ffb56d7..e982dbc 100644
--- a/drivers/staging/lustre/lustre/include/lustre/lustre_user.h
+++ b/drivers/staging/lustre/lustre/include/lustre/lustre_user.h
@@ -849,8 +849,8 @@ struct ioc_data_version {
__u64 idv_version;
__u64 idv_flags; /* See LL_DV_xxx */
};
-#define LL_DV_NOFLUSH 0x01 /* Do not take READ EXTENT LOCK before sampling
- version. Dirty caches are left unchanged. */
+#define LL_DV_RD_FLUSH (1 << 0) /* Flush dirty pages from clients */
+#define LL_DV_WR_FLUSH (1 << 1) /* Flush all caching pages from clients */
#ifndef offsetof
# define offsetof(typ,memb) ((unsigned long)((char *)&(((typ *)0)->memb)))
diff --git a/drivers/staging/lustre/lustre/llite/dir.c b/drivers/staging/lustre/lustre/llite/dir.c
index 1856701..00a782d 100644
--- a/drivers/staging/lustre/lustre/llite/dir.c
+++ b/drivers/staging/lustre/lustre/llite/dir.c
@@ -929,7 +929,7 @@ static int ll_ioc_copy_start(struct super_block *sb, struct hsm_copy *copy)
}
/* Read current file data version */
- rc = ll_data_version(inode, &data_version, 1);
+ rc = ll_data_version(inode, &data_version, LL_DV_RD_FLUSH);
iput(inode);
if (rc != 0) {
CDEBUG(D_HSM, "Could not read file data version of "
@@ -1012,8 +1012,7 @@ static int ll_ioc_copy_end(struct super_block *sb, struct hsm_copy *copy)
GOTO(progress, rc = PTR_ERR(inode));
}
- rc = ll_data_version(inode, &data_version,
- copy->hc_hai.hai_action == HSMA_ARCHIVE);
+ rc = ll_data_version(inode, &data_version, LL_DV_RD_FLUSH);
iput(inode);
if (rc) {
CDEBUG(D_HSM, "Could not read file data version. "
diff --git a/drivers/staging/lustre/lustre/llite/file.c b/drivers/staging/lustre/lustre/llite/file.c
index a2a9844..9fa2cd6 100644
--- a/drivers/staging/lustre/lustre/llite/file.c
+++ b/drivers/staging/lustre/lustre/llite/file.c
@@ -905,7 +905,7 @@ EXPORT_SYMBOL(ll_lease_close);
/* Fills the obdo with the attributes for the lsm */
static int ll_lsm_getattr(struct lov_stripe_md *lsm, struct obd_export *exp,
struct obd_capa *capa, struct obdo *obdo,
- __u64 ioepoch, int sync)
+ __u64 ioepoch, int dv_flags)
{
struct ptlrpc_request_set *set;
struct obd_info oinfo = { { { 0 } } };
@@ -925,9 +925,11 @@ static int ll_lsm_getattr(struct lov_stripe_md *lsm, struct obd_export *exp,
OBD_MD_FLGROUP | OBD_MD_FLEPOCH |
OBD_MD_FLDATAVERSION;
oinfo.oi_capa = capa;
- if (sync) {
+ if (dv_flags & (LL_DV_WR_FLUSH | LL_DV_RD_FLUSH)) {
oinfo.oi_oa->o_valid |= OBD_MD_FLFLAGS;
oinfo.oi_oa->o_flags |= OBD_FL_SRVLOCK;
+ if (dv_flags & LL_DV_WR_FLUSH)
+ oinfo.oi_oa->o_flags |= OBD_FL_FLUSH;
}
set = ptlrpc_prep_set();
@@ -940,11 +942,16 @@ static int ll_lsm_getattr(struct lov_stripe_md *lsm, struct obd_export *exp,
rc = ptlrpc_set_wait(set);
ptlrpc_set_destroy(set);
}
- if (rc == 0)
+ if (rc == 0) {
oinfo.oi_oa->o_valid &= (OBD_MD_FLBLOCKS | OBD_MD_FLBLKSZ |
OBD_MD_FLATIME | OBD_MD_FLMTIME |
OBD_MD_FLCTIME | OBD_MD_FLSIZE |
- OBD_MD_FLDATAVERSION);
+ OBD_MD_FLDATAVERSION | OBD_MD_FLFLAGS);
+ if (dv_flags & LL_DV_WR_FLUSH &&
+ !(oinfo.oi_oa->o_valid & OBD_MD_FLFLAGS &&
+ oinfo.oi_oa->o_flags & OBD_FL_FLUSH))
+ return -ENOTSUPP;
+ }
return rc;
}
@@ -961,7 +968,7 @@ int ll_inode_getattr(struct inode *inode, struct obdo *obdo,
lsm = ccc_inode_lsm_get(inode);
rc = ll_lsm_getattr(lsm, ll_i2dtexp(inode),
- capa, obdo, ioepoch, sync);
+ capa, obdo, ioepoch, sync ? LL_DV_RD_FLUSH : 0);
capa_put(capa);
if (rc == 0) {
struct ost_id *oi = lsm ? &lsm->lsm_oi : &obdo->o_oi;
@@ -1905,11 +1912,12 @@ error:
* This value is computed using stripe object version on OST.
* Version is computed using server side locking.
*
- * @param extent_lock Take extent lock. Not needed if a process is already
- * holding the OST object group locks.
+ * @param sync if do sync on the OST side;
+ * 0: no sync
+ * LL_DV_RD_FLUSH: flush dirty pages, LCK_PR on OSTs
+ * LL_DV_WR_FLUSH: drop all caching pages, LCK_PW on OSTs
*/
-int ll_data_version(struct inode *inode, __u64 *data_version,
- int extent_lock)
+int ll_data_version(struct inode *inode, __u64 *data_version, int flags)
{
struct lov_stripe_md *lsm = NULL;
struct ll_sb_info *sbi = ll_i2sbi(inode);
@@ -1928,7 +1936,7 @@ int ll_data_version(struct inode *inode, __u64 *data_version,
if (obdo == NULL)
GOTO(out, rc = -ENOMEM);
- rc = ll_lsm_getattr(lsm, sbi->ll_dt_exp, NULL, obdo, 0, extent_lock);
+ rc = ll_lsm_getattr(lsm, sbi->ll_dt_exp, NULL, obdo, 0, flags);
if (rc == 0) {
if (!(obdo->o_valid & OBD_MD_FLDATAVERSION))
rc = -EOPNOTSUPP;
@@ -1963,7 +1971,7 @@ int ll_hsm_release(struct inode *inode)
GOTO(out, rc = PTR_ERR(och));
/* Grab latest data_version and [am]time values */
- rc = ll_data_version(inode, &data_version, 1);
+ rc = ll_data_version(inode, &data_version, LL_DV_WR_FLUSH);
if (rc != 0)
GOTO(out, rc);
@@ -2335,13 +2343,13 @@ long ll_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
return ll_fid2path(inode, (void *)arg);
case LL_IOC_DATA_VERSION: {
struct ioc_data_version idv;
- int rc;
+ int rc;
if (copy_from_user(&idv, (char *)arg, sizeof(idv)))
return -EFAULT;
- rc = ll_data_version(inode, &idv.idv_version,
- !(idv.idv_flags & LL_DV_NOFLUSH));
+ idv.idv_flags &= LL_DV_RD_FLUSH | LL_DV_WR_FLUSH;
+ rc = ll_data_version(inode, &idv.idv_version, idv.idv_flags);
if (rc == 0 && copy_to_user((char *) arg, &idv, sizeof(idv)))
return -EFAULT;
diff --git a/drivers/staging/lustre/lustre/llite/llite_internal.h b/drivers/staging/lustre/lustre/llite/llite_internal.h
index 6148ec4..942601b 100644
--- a/drivers/staging/lustre/lustre/llite/llite_internal.h
+++ b/drivers/staging/lustre/lustre/llite/llite_internal.h
@@ -805,7 +805,7 @@ int ll_merge_lvb(const struct lu_env *env, struct inode *inode);
int ll_get_grouplock(struct inode *inode, struct file *file, unsigned long arg);
int ll_put_grouplock(struct inode *inode, struct file *file, unsigned long arg);
int ll_fid2path(struct inode *inode, void *arg);
-int ll_data_version(struct inode *inode, __u64 *data_version, int extent_lock);
+int ll_data_version(struct inode *inode, __u64 *data_version, int flags);
int ll_hsm_release(struct inode *inode);
struct obd_client_handle *ll_lease_open(struct inode *inode, struct file *file,
diff --git a/drivers/staging/lustre/lustre/lov/lov_merge.c b/drivers/staging/lustre/lustre/lov/lov_merge.c
index d204fed..fcfb1e5 100644
--- a/drivers/staging/lustre/lustre/lov/lov_merge.c
+++ b/drivers/staging/lustre/lustre/lov/lov_merge.c
@@ -181,7 +181,8 @@ void lov_merge_attrs(struct obdo *tgt, struct obdo *src, obd_valid valid,
{
valid &= src->o_valid;
- if (*set) {
+ if (*set != 0) {
+ tgt->o_valid &= valid;
if (valid & OBD_MD_FLSIZE) {
/* this handles sparse files properly */
obd_size lov_size;
@@ -200,12 +201,22 @@ void lov_merge_attrs(struct obdo *tgt, struct obdo *src, obd_valid valid,
tgt->o_mtime = src->o_mtime;
if (valid & OBD_MD_FLDATAVERSION)
tgt->o_data_version += src->o_data_version;
+
+ /* handle flags */
+ if (valid & OBD_MD_FLFLAGS)
+ tgt->o_flags &= src->o_flags;
+ else
+ tgt->o_flags = 0;
} else {
memcpy(tgt, src, sizeof(*tgt));
tgt->o_oi = lsm->lsm_oi;
+ tgt->o_valid = valid;
if (valid & OBD_MD_FLSIZE)
tgt->o_size = lov_stripe_size(lsm, src->o_size,
stripeno);
+ tgt->o_flags = 0;
+ if (valid & OBD_MD_FLFLAGS)
+ tgt->o_flags = src->o_flags;
}
/* data_version needs to be valid on all stripes to be correct! */
--
1.7.9.5
--
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