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staging: lustre: clio: add coo_getstripe interface 

Use cl_object_operations::coo_getstripe() to handle
LL_IOC_LOV_GETSTRIPE ops.

Signed-off-by: Bobi Jam <bobijam.xu@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5823
Reviewed-on: http://review.whamcloud.com/12452
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
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:
Bobi Jam 2016-09-18 16:38:30 -04:00 committed by Greg Kroah-Hartman
parent fdeb14fa6b
commit a33fdc0d75
8 changed files with 105 additions and 47 deletions
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7
drivers/staging/lustre/lustre/include/cl_object.h
View File

@ -395,6 +395,11 @@ struct cl_object_operations {
* mainly pages and locks.
*/
int (*coo_prune)(const struct lu_env *env, struct cl_object *obj);
/**
* Object getstripe method.
*/
int (*coo_getstripe)(const struct lu_env *env, struct cl_object *obj,
struct lov_user_md __user *lum);
};
/**
@ -2174,6 +2179,8 @@ int cl_conf_set(const struct lu_env *env, struct cl_object *obj,
const struct cl_object_conf *conf);
int cl_object_prune(const struct lu_env *env, struct cl_object *obj);
void cl_object_kill(const struct lu_env *env, struct cl_object *obj);
int cl_object_getstripe(const struct lu_env *env, struct cl_object *obj,
struct lov_user_md __user *lum);
/**
* Returns true, iff \a o0 and \a o1 are slices of the same object.

38
drivers/staging/lustre/lustre/llite/file.c
View File

@ -1449,6 +1449,22 @@ static int ll_lov_setea(struct inode *inode, struct file *file,
return rc;
}
static int ll_file_getstripe(struct inode *inode,
struct lov_user_md __user *lum)
{
struct lu_env *env;
int refcheck;
int rc;
env = cl_env_get(&refcheck);
if (IS_ERR(env))
return PTR_ERR(env);
rc = cl_object_getstripe(env, ll_i2info(inode)->lli_clob, lum);
cl_env_put(env, &refcheck);
return rc;
}
static int ll_lov_setstripe(struct inode *inode, struct file *file,
unsigned long arg)
{
@ -1466,35 +1482,18 @@ static int ll_lov_setstripe(struct inode *inode, struct file *file,
lum_size);
cl_lov_delay_create_clear(&file->f_flags);
if (rc == 0) {
struct lov_stripe_md *lsm;
__u32 gen;
put_user(0, &lum->lmm_stripe_count);
ll_layout_refresh(inode, &gen);
lsm = ccc_inode_lsm_get(inode);
rc = obd_iocontrol(LL_IOC_LOV_GETSTRIPE, ll_i2dtexp(inode),
0, lsm, lum);
ccc_inode_lsm_put(inode, lsm);
rc = ll_file_getstripe(inode, (struct lov_user_md __user *)arg);
}
kfree(klum);
return rc;
}
static int ll_lov_getstripe(struct inode *inode, unsigned long arg)
{
struct lov_stripe_md *lsm;
int rc = -ENODATA;
lsm = ccc_inode_lsm_get(inode);
if (lsm)
rc = obd_iocontrol(LL_IOC_LOV_GETSTRIPE, ll_i2dtexp(inode), 0,
lsm, (void __user *)arg);
ccc_inode_lsm_put(inode, lsm);
return rc;
}
static int
ll_get_grouplock(struct inode *inode, struct file *file, unsigned long arg)
{
@ -2233,7 +2232,8 @@ ll_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
return rc;
}
case LL_IOC_LOV_GETSTRIPE:
return ll_lov_getstripe(inode, arg);
return ll_file_getstripe(inode,
(struct lov_user_md __user *)arg);
case FSFILT_IOC_FIEMAP:
return ll_ioctl_fiemap(inode, arg);
case FSFILT_IOC_GETFLAGS:

6
drivers/staging/lustre/lustre/lov/lov_cl_internal.h
View File

@ -556,6 +556,8 @@ struct lov_lock_link *lov_lock_link_find(const struct lu_env *env,
struct lovsub_lock *sub);
struct lov_io_sub *lov_page_subio(const struct lu_env *env, struct lov_io *lio,
const struct cl_page_slice *slice);
struct lov_stripe_md *lov_lsm_addref(struct lov_object *lov);
int lov_page_stripe(const struct cl_page *page);
#define lov_foreach_target(lov, var) \
@ -747,6 +749,10 @@ static inline struct lov_layout_raid0 *lov_r0(struct lov_object *lov)
return &lov->u.raid0;
}
/* lov_pack.c */
int lov_getstripe(struct lov_object *obj, struct lov_stripe_md *lsm,
struct lov_user_md __user *lump);
/** @} lov */
#endif

2
drivers/staging/lustre/lustre/lov/lov_internal.h
View File

@ -190,8 +190,6 @@ int lov_packmd(struct obd_export *exp, struct lov_mds_md **lmm,
struct lov_stripe_md *lsm);
int lov_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp,
struct lov_mds_md *lmm, int lmm_bytes);
int lov_getstripe(struct obd_export *exp,
struct lov_stripe_md *lsm, struct lov_user_md __user *lump);
int lov_alloc_memmd(struct lov_stripe_md **lsmp, __u16 stripe_count,
int pattern, int magic);
int lov_free_memmd(struct lov_stripe_md **lsmp);

3
drivers/staging/lustre/lustre/lov/lov_obd.c
View File

@ -1299,9 +1299,6 @@ static int lov_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
obd_ioctl_freedata(buf, len);
break;
}
case LL_IOC_LOV_GETSTRIPE:
rc = lov_getstripe(exp, karg, uarg);
break;
case OBD_IOC_QUOTACTL: {
struct if_quotactl *qctl = karg;
struct lov_tgt_desc *tgt = NULL;

35
drivers/staging/lustre/lustre/lov/lov_object.c
View File

@ -75,6 +75,13 @@ struct lov_layout_operations {
static int lov_layout_wait(const struct lu_env *env, struct lov_object *lov);
void lov_lsm_put(struct cl_object *unused, struct lov_stripe_md *lsm)
{
if (lsm)
lov_free_memmd(&lsm);
}
EXPORT_SYMBOL(lov_lsm_put);
/*****************************************************************************
*
* Lov object layout operations.
@ -904,13 +911,30 @@ int lov_lock_init(const struct lu_env *env, struct cl_object *obj,
io);
}
static int lov_object_getstripe(const struct lu_env *env, struct cl_object *obj,
struct lov_user_md __user *lum)
{
struct lov_object *lov = cl2lov(obj);
struct lov_stripe_md *lsm;
int rc = 0;
lsm = lov_lsm_addref(lov);
if (!lsm)
return -ENODATA;
rc = lov_getstripe(cl2lov(obj), lsm, lum);
lov_lsm_put(obj, lsm);
return rc;
}
static const struct cl_object_operations lov_ops = {
.coo_page_init = lov_page_init,
.coo_lock_init = lov_lock_init,
.coo_io_init = lov_io_init,
.coo_attr_get = lov_attr_get,
.coo_attr_set = lov_attr_set,
.coo_conf_set = lov_conf_set
.coo_conf_set = lov_conf_set,
.coo_getstripe = lov_object_getstripe
};
static const struct lu_object_operations lov_lu_obj_ops = {
@ -947,7 +971,7 @@ struct lu_object *lov_object_alloc(const struct lu_env *env,
return obj;
}
static struct lov_stripe_md *lov_lsm_addref(struct lov_object *lov)
struct lov_stripe_md *lov_lsm_addref(struct lov_object *lov)
{
struct lov_stripe_md *lsm = NULL;
@ -978,13 +1002,6 @@ struct lov_stripe_md *lov_lsm_get(struct cl_object *clobj)
}
EXPORT_SYMBOL(lov_lsm_get);
void lov_lsm_put(struct cl_object *unused, struct lov_stripe_md *lsm)
{
if (lsm)
lov_free_memmd(&lsm);
}
EXPORT_SYMBOL(lov_lsm_put);
int lov_read_and_clear_async_rc(struct cl_object *clob)
{
struct lu_object *luobj;

38
drivers/staging/lustre/lustre/lov/lov_pack.c
View File

@ -45,6 +45,7 @@
#include "../include/lustre/lustre_user.h"
#include "lov_internal.h"
#include "lov_cl_internal.h"
void lov_dump_lmm_common(int level, void *lmmp)
{
@ -104,11 +105,9 @@ void lov_dump_lmm_v3(int level, struct lov_mds_md_v3 *lmm)
* LOVs properly. For now lov_mds_md_size() just assumes one u64
* per stripe.
*/
int lov_packmd(struct obd_export *exp, struct lov_mds_md **lmmp,
int lov_obd_packmd(struct lov_obd *lov, struct lov_mds_md **lmmp,
struct lov_stripe_md *lsm)
{
struct obd_device *obd = class_exp2obd(exp);
struct lov_obd *lov = &obd->u.lov;
struct lov_mds_md_v1 *lmmv1;
struct lov_mds_md_v3 *lmmv3;
__u16 stripe_count;
@ -220,6 +219,15 @@ int lov_packmd(struct obd_export *exp, struct lov_mds_md **lmmp,
return lmm_size;
}
int lov_packmd(struct obd_export *exp, struct lov_mds_md **lmmp,
struct lov_stripe_md *lsm)
{
struct obd_device *obd = class_exp2obd(exp);
struct lov_obd *lov = &obd->u.lov;
return lov_obd_packmd(lov, lmmp, lsm);
}
/* Find the max stripecount we should use */
__u16 lov_get_stripecnt(struct lov_obd *lov, __u32 magic, __u16 stripe_count)
{
@ -367,16 +375,17 @@ int lov_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp,
* the maximum number of OST indices which will fit in the user buffer.
* lmm_magic must be LOV_USER_MAGIC.
*/
int lov_getstripe(struct obd_export *exp, struct lov_stripe_md *lsm,
int lov_getstripe(struct lov_object *obj, struct lov_stripe_md *lsm,
struct lov_user_md __user *lump)
{
/*
* XXX huge struct allocated on stack.
*/
/* we use lov_user_md_v3 because it is larger than lov_user_md_v1 */
struct lov_obd *lov;
struct lov_user_md_v3 lum;
struct lov_mds_md *lmmk = NULL;
int rc, lmm_size;
int rc, lmmk_size, lmm_size;
int lum_size;
mm_segment_t seg;
@ -396,13 +405,13 @@ int lov_getstripe(struct obd_export *exp, struct lov_stripe_md *lsm,
lum_size = sizeof(struct lov_user_md_v1);
if (copy_from_user(&lum, lump, lum_size)) {
rc = -EFAULT;
goto out_set;
goto out;
}
if (lum.lmm_magic != LOV_USER_MAGIC_V1 &&
lum.lmm_magic != LOV_USER_MAGIC_V3 &&
lum.lmm_magic != LOV_USER_MAGIC_SPECIFIC) {
rc = -EINVAL;
goto out_set;
goto out;
}
if (lum.lmm_stripe_count &&
@ -411,11 +420,13 @@ int lov_getstripe(struct obd_export *exp, struct lov_stripe_md *lsm,
lum.lmm_stripe_count = lsm->lsm_stripe_count;
rc = copy_to_user(lump, &lum, lum_size);
rc = -EOVERFLOW;
goto out_set;
goto out;
}
rc = lov_packmd(exp, &lmmk, lsm);
lov = lu2lov_dev(obj->lo_cl.co_lu.lo_dev)->ld_lov;
rc = lov_obd_packmd(lov, &lmmk, lsm);
if (rc < 0)
goto out_set;
goto out;
lmmk_size = rc;
lmm_size = rc;
rc = 0;
@ -451,7 +462,7 @@ int lov_getstripe(struct obd_export *exp, struct lov_stripe_md *lsm,
lmm_size = lum_size;
} else if (lum.lmm_stripe_count < lmmk->lmm_stripe_count) {
rc = -EOVERFLOW;
goto out_set;
goto out_free;
}
/*
* Have a difference between lov_mds_md & lov_user_md.
@ -464,8 +475,9 @@ int lov_getstripe(struct obd_export *exp, struct lov_stripe_md *lsm,
if (copy_to_user(lump, lmmk, lmm_size))
rc = -EFAULT;
obd_free_diskmd(exp, &lmmk);
out_set:
out_free:
kfree(lmmk);
out:
set_fs(seg);
return rc;
}

21
drivers/staging/lustre/lustre/obdclass/cl_object.c
View File

@ -320,6 +320,27 @@ int cl_object_prune(const struct lu_env *env, struct cl_object *obj)
}
EXPORT_SYMBOL(cl_object_prune);
/**
* Get stripe information of this object.
*/
int cl_object_getstripe(const struct lu_env *env, struct cl_object *obj,
struct lov_user_md __user *uarg)
{
struct lu_object_header *top;
int result = 0;
top = obj->co_lu.lo_header;
list_for_each_entry(obj, &top->loh_layers, co_lu.lo_linkage) {
if (obj->co_ops->coo_getstripe) {
result = obj->co_ops->coo_getstripe(env, obj, uarg);
if (result)
break;
}
}
return result;
}
EXPORT_SYMBOL(cl_object_getstripe);
/**
* Helper function removing all object locks, and marking object for
* deletion. All object pages must have been deleted at this point.