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staging: lustre: hsm: Add support to drop all pages for ll_data_version

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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.

Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3647
Reviewed-on: http://review.whamcloud.com/6794
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Aurelien Degremont <aurelien.degremont@cea.fr>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jinshan Xiong 2016-04-04 21:37:01 -04:00 committed by Greg Kroah-Hartman
parent e55a68b6ea
commit e179800665
6 changed files with 38 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/staging/lustre/lustre/include/lustre/lustre_idl.h
View File

@ -1429,6 +1429,7 @@ enum obdo_flags {
*/
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.

5
drivers/staging/lustre/lustre/include/lustre/lustre_user.h
View File

@ -838,9 +838,8 @@ struct ioc_data_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 BIT(0) /* Flush dirty pages from clients */
#define LL_DV_WR_FLUSH BIT(1) /* Flush all caching pages from clients */
#ifndef offsetof
# define offsetof(typ, memb) ((unsigned long)((char *)&(((typ *)0)->memb)))

5
drivers/staging/lustre/lustre/llite/dir.c
View File

@ -940,7 +940,7 @@ 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 "
@ -1024,8 +1024,7 @@ static int ll_ioc_copy_end(struct super_block *sb, struct hsm_copy *copy)
goto progress;
}
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. Request could not be confirmed.\n");

35
drivers/staging/lustre/lustre/llite/file.c
View File

@ -929,7 +929,7 @@ static int ll_lease_close(struct obd_client_handle *och, struct inode *inode,
/* Fills the obdo with the attributes for the lsm */
static int ll_lsm_getattr(struct lov_stripe_md *lsm, struct obd_export *exp,
struct obdo *obdo, __u64 ioepoch, int sync)
struct obdo *obdo, __u64 ioepoch, int dv_flags)
{
struct ptlrpc_request_set *set;
struct obd_info oinfo = { };
@ -948,9 +948,11 @@ static int ll_lsm_getattr(struct lov_stripe_md *lsm, struct obd_export *exp,
OBD_MD_FLMTIME | OBD_MD_FLCTIME |
OBD_MD_FLGROUP | OBD_MD_FLEPOCH |
OBD_MD_FLDATAVERSION;
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();
@ -963,11 +965,16 @@ 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;
}
@ -983,7 +990,7 @@ int ll_inode_getattr(struct inode *inode, struct obdo *obdo,
lsm = ccc_inode_lsm_get(inode);
rc = ll_lsm_getattr(lsm, ll_i2dtexp(inode),
obdo, ioepoch, sync);
obdo, ioepoch, sync ? LL_DV_RD_FLUSH : 0);
if (rc == 0) {
struct ost_id *oi = lsm ? &lsm->lsm_oi : &obdo->o_oi;
@ -1874,11 +1881,12 @@ 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);
@ -1900,7 +1908,7 @@ int ll_data_version(struct inode *inode, __u64 *data_version,
goto out;
}
rc = ll_lsm_getattr(lsm, sbi->ll_dt_exp, obdo, 0, extent_lock);
rc = ll_lsm_getattr(lsm, sbi->ll_dt_exp, obdo, 0, flags);
if (rc == 0) {
if (!(obdo->o_valid & OBD_MD_FLDATAVERSION))
rc = -EOPNOTSUPP;
@ -1936,7 +1944,7 @@ int ll_hsm_release(struct inode *inode)
}
/* 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;
@ -2344,9 +2352,8 @@ ll_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
if (copy_from_user(&idv, (char __user *)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 __user *)arg, &idv,
sizeof(idv)))
return -EFAULT;

2
drivers/staging/lustre/lustre/llite/llite_internal.h
View File

@ -757,7 +757,7 @@ int ll_dir_getstripe(struct inode *inode, struct lov_mds_md **lmmp,
int ll_fsync(struct file *file, loff_t start, loff_t end, int data);
int ll_merge_attr(const struct lu_env *env, struct inode *inode);
int ll_fid2path(struct inode *inode, void __user *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);
/* llite/dcache.c */

11
drivers/staging/lustre/lustre/lov/lov_merge.c
View File

@ -154,6 +154,7 @@ void lov_merge_attrs(struct obdo *tgt, struct obdo *src, u64 valid,
valid &= src->o_valid;
if (*set) {
tgt->o_valid &= valid;
if (valid & OBD_MD_FLSIZE) {
/* this handles sparse files properly */
u64 lov_size;
@ -172,12 +173,22 @@ void lov_merge_attrs(struct obdo *tgt, struct obdo *src, u64 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! */