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staging: lustre: clio: get rid of cl_req 

Implement cl_req_attr_set with a cl_object operation.
Get rid of cl_req and related function and data structures.

Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-6943
Reviewed-on: http://review.whamcloud.com/15833
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Bobi Jam <bobijam@hotmail.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:
Jinshan Xiong 2016-11-10 12:30:42 -05:00 committed by Greg Kroah-Hartman
parent bb371b952a
commit 6a9b2c9276
21 changed files with 198 additions and 1006 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

242
drivers/staging/lustre/lustre/include/cl_object.h
View File

@ -59,10 +59,6 @@
* read/write system call it is associated with the single user
* thread, that issued the system call).
*
* - cl_req represents a collection of pages for a transfer. cl_req is
* constructed by req-forming engine that tries to saturate
* transport with large and continuous transfers.
*
* Terminology
*
* - to avoid confusion high-level I/O operation like read or write system
@ -103,11 +99,8 @@
struct inode;
struct cl_device;
struct cl_device_operations;
struct cl_object;
struct cl_object_page_operations;
struct cl_object_lock_operations;
struct cl_page;
struct cl_page_slice;
@ -120,27 +113,7 @@ struct cl_page_operations;
struct cl_io;
struct cl_io_slice;
struct cl_req;
struct cl_req_slice;
/**
* Operations for each data device in the client stack.
*
* \see vvp_cl_ops, lov_cl_ops, lovsub_cl_ops, osc_cl_ops
*/
struct cl_device_operations {
/**
* Initialize cl_req. This method is called top-to-bottom on all
* devices in the stack to get them a chance to allocate layer-private
* data, and to attach them to the cl_req by calling
* cl_req_slice_add().
*
* \see osc_req_init(), lov_req_init(), lovsub_req_init()
* \see vvp_req_init()
*/
int (*cdo_req_init)(const struct lu_env *env, struct cl_device *dev,
struct cl_req *req);
};
struct cl_req_attr;
/**
* Device in the client stack.
@ -150,8 +123,6 @@ struct cl_device_operations {
struct cl_device {
/** Super-class. */
struct lu_device cd_lu_dev;
/** Per-layer operation vector. */
const struct cl_device_operations *cd_ops;
};
/** \addtogroup cl_object cl_object
@ -435,6 +406,12 @@ struct cl_object_operations {
* Get maximum size of the object.
*/
loff_t (*coo_maxbytes)(struct cl_object *obj);
/**
* Set request attributes.
*/
void (*coo_req_attr_set)(const struct lu_env *env,
struct cl_object *obj,
struct cl_req_attr *attr);
};
/**
@ -626,7 +603,7 @@ enum cl_page_state {
*
* - [cl_page_state::CPS_PAGEOUT] page is dirty, the
* req-formation engine decides that it wants to include this page
* into an cl_req being constructed, and yanks it from the cache;
* into an RPC being constructed, and yanks it from the cache;
*
* - [cl_page_state::CPS_FREEING] VM callback is executed to
* evict the page form the memory;
@ -695,7 +672,7 @@ enum cl_page_state {
* Page is being read in, as a part of a transfer. This is quite
* similar to the cl_page_state::CPS_PAGEOUT state, except that
* read-in is always "immediate"---there is no such thing a sudden
* construction of read cl_req from cached, presumably not up to date,
* construction of read request from cached, presumably not up to date,
* pages.
*
* Underlying VM page is locked for the duration of transfer.
@ -749,8 +726,6 @@ struct cl_page {
struct list_head cp_batch;
/** List of slices. Immutable after creation. */
struct list_head cp_layers;
/** Linkage of pages within cl_req. */
struct list_head cp_flight;
/**
* Page state. This field is const to avoid accidental update, it is
* modified only internally within cl_page.c. Protected by a VM lock.
@ -767,12 +742,6 @@ struct cl_page {
* by sub-io. Protected by a VM lock.
*/
struct cl_io *cp_owner;
/**
* Owning IO request in cl_page_state::CPS_PAGEOUT and
* cl_page_state::CPS_PAGEIN states. This field is maintained only in
* the top-level pages. Protected by a VM lock.
*/
struct cl_req *cp_req;
/** List of references to this page, for debugging. */
struct lu_ref cp_reference;
/** Link to an object, for debugging. */
@ -814,7 +783,6 @@ enum cl_lock_mode {
/**
* Requested transfer type.
* \ingroup cl_req
*/
enum cl_req_type {
CRT_READ,
@ -930,8 +898,7 @@ struct cl_page_operations {
/**
* \name transfer
*
* Transfer methods. See comment on cl_req for a description of
* transfer formation and life-cycle.
* Transfer methods.
*
* @{
*/
@ -977,7 +944,7 @@ struct cl_page_operations {
int ioret);
/**
* Called when cached page is about to be added to the
* cl_req as a part of req formation.
* ptlrpc request as a part of req formation.
*
* \return 0 : proceed with this page;
* \return -EAGAIN : skip this page;
@ -1879,179 +1846,20 @@ struct cl_io {
/** @} cl_io */
/** \addtogroup cl_req cl_req
* @{
*/
/** \struct cl_req
* Transfer.
*
* There are two possible modes of transfer initiation on the client:
*
* - immediate transfer: this is started when a high level io wants a page
* or a collection of pages to be transferred right away. Examples:
* read-ahead, synchronous read in the case of non-page aligned write,
* page write-out as a part of extent lock cancellation, page write-out
* as a part of memory cleansing. Immediate transfer can be both
* cl_req_type::CRT_READ and cl_req_type::CRT_WRITE;
*
* - opportunistic transfer (cl_req_type::CRT_WRITE only), that happens
* when io wants to transfer a page to the server some time later, when
* it can be done efficiently. Example: pages dirtied by the write(2)
* path.
*
* In any case, transfer takes place in the form of a cl_req, which is a
* representation for a network RPC.
*
* Pages queued for an opportunistic transfer are cached until it is decided
* that efficient RPC can be composed of them. This decision is made by "a
* req-formation engine", currently implemented as a part of osc
* layer. Req-formation depends on many factors: the size of the resulting
* RPC, whether or not multi-object RPCs are supported by the server,
* max-rpc-in-flight limitations, size of the dirty cache, etc.
*
* For the immediate transfer io submits a cl_page_list, that req-formation
* engine slices into cl_req's, possibly adding cached pages to some of
* the resulting req's.
*
* Whenever a page from cl_page_list is added to a newly constructed req, its
* cl_page_operations::cpo_prep() layer methods are called. At that moment,
* page state is atomically changed from cl_page_state::CPS_OWNED to
* cl_page_state::CPS_PAGEOUT or cl_page_state::CPS_PAGEIN, cl_page::cp_owner
* is zeroed, and cl_page::cp_req is set to the
* req. cl_page_operations::cpo_prep() method at the particular layer might
* return -EALREADY to indicate that it does not need to submit this page
* at all. This is possible, for example, if page, submitted for read,
* became up-to-date in the meantime; and for write, the page don't have
* dirty bit marked. \see cl_io_submit_rw()
*
* Whenever a cached page is added to a newly constructed req, its
* cl_page_operations::cpo_make_ready() layer methods are called. At that
* moment, page state is atomically changed from cl_page_state::CPS_CACHED to
* cl_page_state::CPS_PAGEOUT, and cl_page::cp_req is set to
* req. cl_page_operations::cpo_make_ready() method at the particular layer
* might return -EAGAIN to indicate that this page is not eligible for the
* transfer right now.
*
* FUTURE
*
* Plan is to divide transfers into "priority bands" (indicated when
* submitting cl_page_list, and queuing a page for the opportunistic transfer)
* and allow glueing of cached pages to immediate transfers only within single
* band. This would make high priority transfers (like lock cancellation or
* memory pressure induced write-out) really high priority.
*
*/
/**
* Per-transfer attributes.
*/
struct cl_req_attr {
enum cl_req_type cra_type;
u64 cra_flags;
struct cl_page *cra_page;
/** Generic attributes for the server consumption. */
struct obdo *cra_oa;
/** Jobid */
char cra_jobid[LUSTRE_JOBID_SIZE];
};
/**
* Transfer request operations definable at every layer.
*
* Concurrency: transfer formation engine synchronizes calls to all transfer
* methods.
*/
struct cl_req_operations {
/**
* Invoked top-to-bottom by cl_req_prep() when transfer formation is
* complete (all pages are added).
*
* \see osc_req_prep()
*/
int (*cro_prep)(const struct lu_env *env,
const struct cl_req_slice *slice);
/**
* Called top-to-bottom to fill in \a oa fields. This is called twice
* with different flags, see bug 10150 and osc_build_req().
*
* \param obj an object from cl_req which attributes are to be set in
* \a oa.
*
* \param oa struct obdo where attributes are placed
*
* \param flags \a oa fields to be filled.
*/
void (*cro_attr_set)(const struct lu_env *env,
const struct cl_req_slice *slice,
const struct cl_object *obj,
struct cl_req_attr *attr, u64 flags);
/**
* Called top-to-bottom from cl_req_completion() to notify layers that
* transfer completed. Has to free all state allocated by
* cl_device_operations::cdo_req_init().
*/
void (*cro_completion)(const struct lu_env *env,
const struct cl_req_slice *slice, int ioret);
};
/**
* A per-object state that (potentially multi-object) transfer request keeps.
*/
struct cl_req_obj {
/** object itself */
struct cl_object *ro_obj;
/** reference to cl_req_obj::ro_obj. For debugging. */
struct lu_ref_link ro_obj_ref;
/* something else? Number of pages for a given object? */
};
/**
* Transfer request.
*
* Transfer requests are not reference counted, because IO sub-system owns
* them exclusively and knows when to free them.
*
* Life cycle.
*
* cl_req is created by cl_req_alloc() that calls
* cl_device_operations::cdo_req_init() device methods to allocate per-req
* state in every layer.
*
* Then pages are added (cl_req_page_add()), req keeps track of all objects it
* contains pages for.
*
* Once all pages were collected, cl_page_operations::cpo_prep() method is
* called top-to-bottom. At that point layers can modify req, let it pass, or
* deny it completely. This is to support things like SNS that have transfer
* ordering requirements invisible to the individual req-formation engine.
*
* On transfer completion (or transfer timeout, or failure to initiate the
* transfer of an allocated req), cl_req_operations::cro_completion() method
* is called, after execution of cl_page_operations::cpo_completion() of all
* req's pages.
*/
struct cl_req {
enum cl_req_type crq_type;
/** A list of pages being transferred */
struct list_head crq_pages;
/** Number of pages in cl_req::crq_pages */
unsigned crq_nrpages;
/** An array of objects which pages are in ->crq_pages */
struct cl_req_obj *crq_o;
/** Number of elements in cl_req::crq_objs[] */
unsigned crq_nrobjs;
struct list_head crq_layers;
};
/**
* Per-layer state for request.
*/
struct cl_req_slice {
struct cl_req *crs_req;
struct cl_device *crs_dev;
struct list_head crs_linkage;
const struct cl_req_operations *crs_ops;
};
/* @} cl_req */
enum cache_stats_item {
/** how many cache lookups were performed */
CS_lookup = 0,
@ -2196,9 +2004,6 @@ void cl_lock_slice_add(struct cl_lock *lock, struct cl_lock_slice *slice,
const struct cl_lock_operations *ops);
void cl_io_slice_add(struct cl_io *io, struct cl_io_slice *slice,
struct cl_object *obj, const struct cl_io_operations *ops);
void cl_req_slice_add(struct cl_req *req, struct cl_req_slice *slice,
struct cl_device *dev,
const struct cl_req_operations *ops);
/** @} helpers */
/** \defgroup cl_object cl_object
@ -2567,19 +2372,8 @@ void cl_2queue_init_page(struct cl_2queue *queue, struct cl_page *page);
/** @} cl_page_list */
/** \defgroup cl_req cl_req
* @{
*/
struct cl_req *cl_req_alloc(const struct lu_env *env, struct cl_page *page,
enum cl_req_type crt, int nr_objects);
void cl_req_page_add(const struct lu_env *env, struct cl_req *req,
struct cl_page *page);
void cl_req_page_done(const struct lu_env *env, struct cl_page *page);
int cl_req_prep(const struct lu_env *env, struct cl_req *req);
void cl_req_attr_set(const struct lu_env *env, struct cl_req *req,
struct cl_req_attr *attr, u64 flags);
void cl_req_completion(const struct lu_env *env, struct cl_req *req, int ioret);
void cl_req_attr_set(const struct lu_env *env, struct cl_object *obj,
struct cl_req_attr *attr);
/** \defgroup cl_sync_io cl_sync_io
* @{
@ -2615,8 +2409,6 @@ void cl_sync_io_end(const struct lu_env *env, struct cl_sync_io *anchor);
/** @} cl_sync_io */
/** @} cl_req */
/** \defgroup cl_env cl_env
*
* lu_env handling for a client.

2
drivers/staging/lustre/lustre/llite/Makefile
View File

@ -3,5 +3,5 @@ lustre-y := dcache.o dir.o file.o llite_lib.o llite_nfs.o \
rw.o rw26.o namei.o symlink.o llite_mmap.o range_lock.o \
xattr.o xattr_cache.o xattr_security.o \
super25.o statahead.o glimpse.o lcommon_cl.o lcommon_misc.o \
vvp_dev.o vvp_page.o vvp_lock.o vvp_io.o vvp_object.o vvp_req.o \
vvp_dev.o vvp_page.o vvp_lock.o vvp_io.o vvp_object.o \
lproc_llite.o

11
drivers/staging/lustre/lustre/llite/llite_internal.h
View File

@ -662,8 +662,6 @@ enum {
LPROC_LL_WRITE_BYTES,
LPROC_LL_BRW_READ,
LPROC_LL_BRW_WRITE,
LPROC_LL_OSC_READ,
LPROC_LL_OSC_WRITE,
LPROC_LL_IOCTL,
LPROC_LL_OPEN,
LPROC_LL_RELEASE,
@ -1215,15 +1213,6 @@ struct ll_dio_pages {
int ldp_nr;
};
static inline void cl_stats_tally(struct cl_device *dev, enum cl_req_type crt,
int rc)
{
int opc = (crt == CRT_READ) ? LPROC_LL_OSC_READ :
LPROC_LL_OSC_WRITE;
ll_stats_ops_tally(ll_s2sbi(cl2vvp_dev(dev)->vdv_sb), opc, rc);
}
ssize_t ll_direct_rw_pages(const struct lu_env *env, struct cl_io *io,
int rw, struct inode *inode,
struct ll_dio_pages *pv);

4
drivers/staging/lustre/lustre/llite/lproc_llite.c
View File

@ -1060,10 +1060,6 @@ static const struct llite_file_opcode {
"brw_read" },
{ LPROC_LL_BRW_WRITE, LPROCFS_CNTR_AVGMINMAX | LPROCFS_TYPE_PAGES,
"brw_write" },
{ LPROC_LL_OSC_READ, LPROCFS_CNTR_AVGMINMAX | LPROCFS_TYPE_BYTES,
"osc_read" },
{ LPROC_LL_OSC_WRITE, LPROCFS_CNTR_AVGMINMAX | LPROCFS_TYPE_BYTES,
"osc_write" },
{ LPROC_LL_IOCTL, LPROCFS_TYPE_REGS, "ioctl" },
{ LPROC_LL_OPEN, LPROCFS_TYPE_REGS, "open" },
{ LPROC_LL_RELEASE, LPROCFS_TYPE_REGS, "close" },

12
drivers/staging/lustre/lustre/llite/vvp_dev.c
View File

@ -55,7 +55,6 @@
static struct kmem_cache *ll_thread_kmem;
struct kmem_cache *vvp_lock_kmem;
struct kmem_cache *vvp_object_kmem;
struct kmem_cache *vvp_req_kmem;
static struct kmem_cache *vvp_session_kmem;
static struct kmem_cache *vvp_thread_kmem;
@ -75,11 +74,6 @@ static struct lu_kmem_descr vvp_caches[] = {
.ckd_name = "vvp_object_kmem",
.ckd_size = sizeof(struct vvp_object),
},
{
.ckd_cache = &vvp_req_kmem,
.ckd_name = "vvp_req_kmem",
.ckd_size = sizeof(struct vvp_req),
},
{
.ckd_cache = &vvp_session_kmem,
.ckd_name = "vvp_session_kmem",
@ -177,10 +171,6 @@ static const struct lu_device_operations vvp_lu_ops = {
.ldo_object_alloc = vvp_object_alloc
};
static const struct cl_device_operations vvp_cl_ops = {
.cdo_req_init = vvp_req_init
};
static struct lu_device *vvp_device_free(const struct lu_env *env,
struct lu_device *d)
{
@ -213,7 +203,6 @@ static struct lu_device *vvp_device_alloc(const struct lu_env *env,
lud = &vdv->vdv_cl.cd_lu_dev;
cl_device_init(&vdv->vdv_cl, t);
vvp2lu_dev(vdv)->ld_ops = &vvp_lu_ops;
vdv->vdv_cl.cd_ops = &vvp_cl_ops;
site = kzalloc(sizeof(*site), GFP_NOFS);
if (site) {
@ -332,7 +321,6 @@ int cl_sb_init(struct super_block *sb)
cl = cl_type_setup(env, NULL, &vvp_device_type,
sbi->ll_dt_exp->exp_obd->obd_lu_dev);
if (!IS_ERR(cl)) {
cl2vvp_dev(cl)->vdv_sb = sb;
sbi->ll_cl = cl;
sbi->ll_site = cl2lu_dev(cl)->ld_site;
}

8
drivers/staging/lustre/lustre/llite/vvp_internal.h
View File

@ -120,7 +120,6 @@ extern struct lu_context_key vvp_thread_key;
extern struct kmem_cache *vvp_lock_kmem;
extern struct kmem_cache *vvp_object_kmem;
extern struct kmem_cache *vvp_req_kmem;
struct vvp_thread_info {
struct cl_lock vti_lock;
@ -242,7 +241,6 @@ static inline pgoff_t vvp_index(struct vvp_page *vvp)
struct vvp_device {
struct cl_device vdv_cl;
struct super_block *vdv_sb;
struct cl_device *vdv_next;
};
@ -250,10 +248,6 @@ struct vvp_lock {
struct cl_lock_slice vlk_cl;
};
struct vvp_req {
struct cl_req_slice vrq_cl;
};
void *ccc_key_init(const struct lu_context *ctx,
struct lu_context_key *key);
void ccc_key_fini(const struct lu_context *ctx,
@ -316,8 +310,6 @@ int vvp_lock_init(const struct lu_env *env, struct cl_object *obj,
struct cl_lock *lock, const struct cl_io *io);
int vvp_page_init(const struct lu_env *env, struct cl_object *obj,
struct cl_page *page, pgoff_t index);
int vvp_req_init(const struct lu_env *env, struct cl_device *dev,
struct cl_req *req);
struct lu_object *vvp_object_alloc(const struct lu_env *env,
const struct lu_object_header *hdr,
struct lu_device *dev);

23
drivers/staging/lustre/lustre/llite/vvp_object.c
View File

@ -184,6 +184,26 @@ static int vvp_object_glimpse(const struct lu_env *env,
return 0;
}
static void vvp_req_attr_set(const struct lu_env *env, struct cl_object *obj,
struct cl_req_attr *attr)
{
u64 valid_flags = OBD_MD_FLTYPE;
struct inode *inode;
struct obdo *oa;
oa = attr->cra_oa;
inode = vvp_object_inode(obj);
if (attr->cra_type == CRT_WRITE)
valid_flags |= OBD_MD_FLMTIME | OBD_MD_FLCTIME |
OBD_MD_FLUID | OBD_MD_FLGID;
obdo_from_inode(oa, inode, valid_flags & attr->cra_flags);
obdo_set_parent_fid(oa, &ll_i2info(inode)->lli_fid);
if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_INVALID_PFID))
oa->o_parent_oid++;
memcpy(attr->cra_jobid, ll_i2info(inode)->lli_jobid, LUSTRE_JOBID_SIZE);
}
static const struct cl_object_operations vvp_ops = {
.coo_page_init = vvp_page_init,
.coo_lock_init = vvp_lock_init,
@ -192,7 +212,8 @@ static const struct cl_object_operations vvp_ops = {
.coo_attr_update = vvp_attr_update,
.coo_conf_set = vvp_conf_set,
.coo_prune = vvp_prune,
.coo_glimpse = vvp_object_glimpse
.coo_glimpse = vvp_object_glimpse,
.coo_req_attr_set = vvp_req_attr_set
};
static int vvp_object_init0(const struct lu_env *env,

115
drivers/staging/lustre/lustre/llite/vvp_req.c
View File

@ -1,115 +0,0 @@
/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 only,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License version 2 for more details (a copy is included
* in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
* http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
/*
* Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
* Copyright (c) 2011, 2014, Intel Corporation.
*/
#define DEBUG_SUBSYSTEM S_LLITE
#include "../include/lustre/lustre_idl.h"
#include "../include/cl_object.h"
#include "../include/obd.h"
#include "../include/obd_support.h"
#include "llite_internal.h"
#include "vvp_internal.h"
static inline struct vvp_req *cl2vvp_req(const struct cl_req_slice *slice)
{
return container_of0(slice, struct vvp_req, vrq_cl);
}
/**
* Implementation of struct cl_req_operations::cro_attr_set() for VVP
* layer. VVP is responsible for
*
* - o_[mac]time
*
* - o_mode
*
* - o_parent_seq
*
* - o_[ug]id
*
* - o_parent_oid
*
* - o_parent_ver
*
*/
static void vvp_req_attr_set(const struct lu_env *env,
const struct cl_req_slice *slice,
const struct cl_object *obj,
struct cl_req_attr *attr, u64 flags)
{
struct inode *inode;
struct obdo *oa;
u32 valid_flags;
oa = attr->cra_oa;
inode = vvp_object_inode(obj);
valid_flags = OBD_MD_FLTYPE;
if (slice->crs_req->crq_type == CRT_WRITE)
valid_flags |= OBD_MD_FLMTIME | OBD_MD_FLCTIME |
OBD_MD_FLUID | OBD_MD_FLGID;
obdo_from_inode(oa, inode, valid_flags & flags);
obdo_set_parent_fid(oa, &ll_i2info(inode)->lli_fid);
if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_INVALID_PFID))
oa->o_parent_oid++;
memcpy(attr->cra_jobid, ll_i2info(inode)->lli_jobid,
LUSTRE_JOBID_SIZE);
}
static void vvp_req_completion(const struct lu_env *env,
const struct cl_req_slice *slice, int ioret)
{
struct vvp_req *vrq;
if (ioret > 0)
cl_stats_tally(slice->crs_dev, slice->crs_req->crq_type, ioret);
vrq = cl2vvp_req(slice);
kmem_cache_free(vvp_req_kmem, vrq);
}
static const struct cl_req_operations vvp_req_ops = {
.cro_attr_set = vvp_req_attr_set,
.cro_completion = vvp_req_completion
};
int vvp_req_init(const struct lu_env *env, struct cl_device *dev,
struct cl_req *req)
{
struct vvp_req *vrq;
int result;
vrq = kmem_cache_zalloc(vvp_req_kmem, GFP_NOFS);
if (vrq) {
cl_req_slice_add(req, &vrq->vrq_cl, dev, &vvp_req_ops);
result = 0;
} else {
result = -ENOMEM;
}
return result;
}

26
drivers/staging/lustre/lustre/lov/lov_cl_internal.h
View File

@ -472,20 +472,6 @@ struct lov_session {
struct lov_sublock_env ls_subenv;
};
/**
* State of transfer for lov.
*/
struct lov_req {
struct cl_req_slice lr_cl;
};
/**
* State of transfer for lovsub.
*/
struct lovsub_req {
struct cl_req_slice lsrq_cl;
};
extern struct lu_device_type lov_device_type;
extern struct lu_device_type lovsub_device_type;
@ -496,11 +482,9 @@ extern struct kmem_cache *lov_lock_kmem;
extern struct kmem_cache *lov_object_kmem;
extern struct kmem_cache *lov_thread_kmem;
extern struct kmem_cache *lov_session_kmem;
extern struct kmem_cache *lov_req_kmem;
extern struct kmem_cache *lovsub_lock_kmem;
extern struct kmem_cache *lovsub_object_kmem;
extern struct kmem_cache *lovsub_req_kmem;
extern struct kmem_cache *lov_lock_link_kmem;
@ -699,11 +683,6 @@ static inline struct lov_page *cl2lov_page(const struct cl_page_slice *slice)
return container_of0(slice, struct lov_page, lps_cl);
}
static inline struct lov_req *cl2lov_req(const struct cl_req_slice *slice)
{
return container_of0(slice, struct lov_req, lr_cl);
}
static inline struct lovsub_page *
cl2lovsub_page(const struct cl_page_slice *slice)
{
@ -711,11 +690,6 @@ cl2lovsub_page(const struct cl_page_slice *slice)
return container_of0(slice, struct lovsub_page, lsb_cl);
}
static inline struct lovsub_req *cl2lovsub_req(const struct cl_req_slice *slice)
{
return container_of0(slice, struct lovsub_req, lsrq_cl);
}
static inline struct lov_io *cl2lov_io(const struct lu_env *env,
const struct cl_io_slice *ios)
{

52
drivers/staging/lustre/lustre/lov/lov_dev.c
View File

@ -46,11 +46,9 @@ struct kmem_cache *lov_lock_kmem;
struct kmem_cache *lov_object_kmem;
struct kmem_cache *lov_thread_kmem;
struct kmem_cache *lov_session_kmem;
struct kmem_cache *lov_req_kmem;
struct kmem_cache *lovsub_lock_kmem;
struct kmem_cache *lovsub_object_kmem;
struct kmem_cache *lovsub_req_kmem;
struct kmem_cache *lov_lock_link_kmem;
@ -78,11 +76,6 @@ struct lu_kmem_descr lov_caches[] = {
.ckd_name = "lov_session_kmem",
.ckd_size = sizeof(struct lov_session)
},
{
.ckd_cache = &lov_req_kmem,
.ckd_name = "lov_req_kmem",
.ckd_size = sizeof(struct lov_req)
},
{
.ckd_cache = &lovsub_lock_kmem,
.ckd_name = "lovsub_lock_kmem",
@ -93,11 +86,6 @@ struct lu_kmem_descr lov_caches[] = {
.ckd_name = "lovsub_object_kmem",
.ckd_size = sizeof(struct lovsub_object)
},
{
.ckd_cache = &lovsub_req_kmem,
.ckd_name = "lovsub_req_kmem",
.ckd_size = sizeof(struct lovsub_req)
},
{
.ckd_cache = &lov_lock_link_kmem,
.ckd_name = "lov_lock_link_kmem",
@ -108,25 +96,6 @@ struct lu_kmem_descr lov_caches[] = {
}
};
/*****************************************************************************
*
* Lov transfer operations.
*
*/
static void lov_req_completion(const struct lu_env *env,
const struct cl_req_slice *slice, int ioret)
{
struct lov_req *lr;
lr = cl2lov_req(slice);
kmem_cache_free(lov_req_kmem, lr);
}
static const struct cl_req_operations lov_req_ops = {
.cro_completion = lov_req_completion
};
/*****************************************************************************
*
* Lov device and device type functions.
@ -248,26 +217,6 @@ static int lov_device_init(const struct lu_env *env, struct lu_device *d,
return rc;
}
static int lov_req_init(const struct lu_env *env, struct cl_device *dev,
struct cl_req *req)
{
struct lov_req *lr;
int result;
lr = kmem_cache_zalloc(lov_req_kmem, GFP_NOFS);
if (lr) {
cl_req_slice_add(req, &lr->lr_cl, dev, &lov_req_ops);
result = 0;
} else {
result = -ENOMEM;
}
return result;
}
static const struct cl_device_operations lov_cl_ops = {
.cdo_req_init = lov_req_init
};
static void lov_emerg_free(struct lov_device_emerg **emrg, int nr)
{
int i;
@ -478,7 +427,6 @@ static struct lu_device *lov_device_alloc(const struct lu_env *env,
cl_device_init(&ld->ld_cl, t);
d = lov2lu_dev(ld);
d->ld_ops = &lov_lu_ops;
ld->ld_cl.cd_ops = &lov_cl_ops;
mutex_init(&ld->ld_mutex);
lockdep_set_class(&ld->ld_mutex, &cl_lov_device_mutex_class);

61
drivers/staging/lustre/lustre/lov/lovsub_dev.c
View File

@ -42,46 +42,6 @@
* @{
*/
/*****************************************************************************
*
* Lovsub transfer operations.
*
*/
static void lovsub_req_completion(const struct lu_env *env,
const struct cl_req_slice *slice, int ioret)
{
struct lovsub_req *lsr;
lsr = cl2lovsub_req(slice);
kmem_cache_free(lovsub_req_kmem, lsr);
}
/**
* Implementation of struct cl_req_operations::cro_attr_set() for lovsub
* layer. Lov and lovsub are responsible only for struct obdo::o_stripe_idx
* field, which is filled there.
*/
static void lovsub_req_attr_set(const struct lu_env *env,
const struct cl_req_slice *slice,
const struct cl_object *obj,
struct cl_req_attr *attr, u64 flags)
{
struct lovsub_object *subobj;
subobj = cl2lovsub(obj);
/*
* There is no OBD_MD_* flag for obdo::o_stripe_idx, so set it
* unconditionally. It never changes anyway.
*/
attr->cra_oa->o_stripe_idx = subobj->lso_index;
}
static const struct cl_req_operations lovsub_req_ops = {
.cro_attr_set = lovsub_req_attr_set,
.cro_completion = lovsub_req_completion
};
/*****************************************************************************
*
* Lov-sub device and device type functions.
@ -137,32 +97,12 @@ static struct lu_device *lovsub_device_free(const struct lu_env *env,
return next;
}
static int lovsub_req_init(const struct lu_env *env, struct cl_device *dev,
struct cl_req *req)
{
struct lovsub_req *lsr;
int result;
lsr = kmem_cache_zalloc(lovsub_req_kmem, GFP_NOFS);
if (lsr) {
cl_req_slice_add(req, &lsr->lsrq_cl, dev, &lovsub_req_ops);
result = 0;
} else {
result = -ENOMEM;
}
return result;
}
static const struct lu_device_operations lovsub_lu_ops = {
.ldo_object_alloc = lovsub_object_alloc,
.ldo_process_config = NULL,
.ldo_recovery_complete = NULL
};
static const struct cl_device_operations lovsub_cl_ops = {
.cdo_req_init = lovsub_req_init
};
static struct lu_device *lovsub_device_alloc(const struct lu_env *env,
struct lu_device_type *t,
struct lustre_cfg *cfg)
@ -178,7 +118,6 @@ static struct lu_device *lovsub_device_alloc(const struct lu_env *env,
if (result == 0) {
d = lovsub2lu_dev(lsd);
d->ld_ops = &lovsub_lu_ops;
lsd->acid_cl.cd_ops = &lovsub_cl_ops;
} else {
d = ERR_PTR(result);
}

22
drivers/staging/lustre/lustre/lov/lovsub_object.c
View File

@ -116,11 +116,31 @@ static int lovsub_object_glimpse(const struct lu_env *env,
return cl_object_glimpse(env, &los->lso_super->lo_cl, lvb);
}
/**
* Implementation of struct cl_object_operations::coo_req_attr_set() for lovsub
* layer. Lov and lovsub are responsible only for struct obdo::o_stripe_idx
* field, which is filled there.
*/
static void lovsub_req_attr_set(const struct lu_env *env, struct cl_object *obj,
struct cl_req_attr *attr)
{
struct lovsub_object *subobj = cl2lovsub(obj);
cl_req_attr_set(env, &subobj->lso_super->lo_cl, attr);
/*
* There is no OBD_MD_* flag for obdo::o_stripe_idx, so set it
* unconditionally. It never changes anyway.
*/
attr->cra_oa->o_stripe_idx = subobj->lso_index;
}
static const struct cl_object_operations lovsub_ops = {
.coo_page_init = lovsub_page_init,
.coo_lock_init = lovsub_lock_init,
.coo_attr_update = lovsub_attr_update,
.coo_glimpse = lovsub_object_glimpse
.coo_glimpse = lovsub_object_glimpse,
.coo_req_attr_set = lovsub_req_attr_set
};
static const struct lu_object_operations lovsub_lu_obj_ops = {

229
drivers/staging/lustre/lustre/obdclass/cl_io.c
View File

@ -1044,236 +1044,19 @@ struct cl_io *cl_io_top(struct cl_io *io)
}
EXPORT_SYMBOL(cl_io_top);
/**
* Adds request slice to the compound request.
*
* This is called by cl_device_operations::cdo_req_init() methods to add a
* per-layer state to the request. New state is added at the end of
* cl_req::crq_layers list, that is, it is at the bottom of the stack.
*
* \see cl_lock_slice_add(), cl_page_slice_add(), cl_io_slice_add()
*/
void cl_req_slice_add(struct cl_req *req, struct cl_req_slice *slice,
struct cl_device *dev,
const struct cl_req_operations *ops)
{
list_add_tail(&slice->crs_linkage, &req->crq_layers);
slice->crs_dev = dev;
slice->crs_ops = ops;
slice->crs_req = req;
}
EXPORT_SYMBOL(cl_req_slice_add);
static void cl_req_free(const struct lu_env *env, struct cl_req *req)
{
unsigned i;
LASSERT(list_empty(&req->crq_pages));
LASSERT(req->crq_nrpages == 0);
LINVRNT(list_empty(&req->crq_layers));
LINVRNT(equi(req->crq_nrobjs > 0, req->crq_o));
if (req->crq_o) {
for (i = 0; i < req->crq_nrobjs; ++i) {
struct cl_object *obj = req->crq_o[i].ro_obj;
if (obj) {
lu_object_ref_del_at(&obj->co_lu,
&req->crq_o[i].ro_obj_ref,
"cl_req", req);
cl_object_put(env, obj);
}
}
kfree(req->crq_o);
}
kfree(req);
}
static int cl_req_init(const struct lu_env *env, struct cl_req *req,
struct cl_page *page)
{
struct cl_device *dev;
struct cl_page_slice *slice;
int result;
result = 0;
list_for_each_entry(slice, &page->cp_layers, cpl_linkage) {
dev = lu2cl_dev(slice->cpl_obj->co_lu.lo_dev);
if (dev->cd_ops->cdo_req_init) {
result = dev->cd_ops->cdo_req_init(env, dev, req);
if (result != 0)
break;
}
}
return result;
}
/**
* Invokes per-request transfer completion call-backs
* (cl_req_operations::cro_completion()) bottom-to-top.
*/
void cl_req_completion(const struct lu_env *env, struct cl_req *req, int rc)
{
struct cl_req_slice *slice;
/*
* for the lack of list_for_each_entry_reverse_safe()...
*/
while (!list_empty(&req->crq_layers)) {
slice = list_entry(req->crq_layers.prev,
struct cl_req_slice, crs_linkage);
list_del_init(&slice->crs_linkage);
if (slice->crs_ops->cro_completion)
slice->crs_ops->cro_completion(env, slice, rc);
}
cl_req_free(env, req);
}
EXPORT_SYMBOL(cl_req_completion);
/**
* Allocates new transfer request.
*/
struct cl_req *cl_req_alloc(const struct lu_env *env, struct cl_page *page,
enum cl_req_type crt, int nr_objects)
{
struct cl_req *req;
LINVRNT(nr_objects > 0);
req = kzalloc(sizeof(*req), GFP_NOFS);
if (req) {
int result;
req->crq_type = crt;
INIT_LIST_HEAD(&req->crq_pages);
INIT_LIST_HEAD(&req->crq_layers);
req->crq_o = kcalloc(nr_objects, sizeof(req->crq_o[0]),
GFP_NOFS);
if (req->crq_o) {
req->crq_nrobjs = nr_objects;
result = cl_req_init(env, req, page);
} else {
result = -ENOMEM;
}
if (result != 0) {
cl_req_completion(env, req, result);
req = ERR_PTR(result);
}
} else {
req = ERR_PTR(-ENOMEM);
}
return req;
}
EXPORT_SYMBOL(cl_req_alloc);
/**
* Adds a page to a request.
*/
void cl_req_page_add(const struct lu_env *env,
struct cl_req *req, struct cl_page *page)
{
struct cl_object *obj;
struct cl_req_obj *rqo;
unsigned int i;
LASSERT(list_empty(&page->cp_flight));
LASSERT(!page->cp_req);
CL_PAGE_DEBUG(D_PAGE, env, page, "req %p, %d, %u\n",
req, req->crq_type, req->crq_nrpages);
list_add_tail(&page->cp_flight, &req->crq_pages);
++req->crq_nrpages;
page->cp_req = req;
obj = cl_object_top(page->cp_obj);
for (i = 0, rqo = req->crq_o; obj != rqo->ro_obj; ++i, ++rqo) {
if (!rqo->ro_obj) {
rqo->ro_obj = obj;
cl_object_get(obj);
lu_object_ref_add_at(&obj->co_lu, &rqo->ro_obj_ref,
"cl_req", req);
break;
}
}
LASSERT(i < req->crq_nrobjs);
}
EXPORT_SYMBOL(cl_req_page_add);
/**
* Removes a page from a request.
*/
void cl_req_page_done(const struct lu_env *env, struct cl_page *page)
{
struct cl_req *req = page->cp_req;
LASSERT(!list_empty(&page->cp_flight));
LASSERT(req->crq_nrpages > 0);
list_del_init(&page->cp_flight);
--req->crq_nrpages;
page->cp_req = NULL;
}
EXPORT_SYMBOL(cl_req_page_done);
/**
* Notifies layers that request is about to depart by calling
* cl_req_operations::cro_prep() top-to-bottom.
*/
int cl_req_prep(const struct lu_env *env, struct cl_req *req)
{
unsigned int i;
int result;
const struct cl_req_slice *slice;
/*
* Check that the caller of cl_req_alloc() didn't lie about the number
* of objects.
*/
for (i = 0; i < req->crq_nrobjs; ++i)
LASSERT(req->crq_o[i].ro_obj);
result = 0;
list_for_each_entry(slice, &req->crq_layers, crs_linkage) {
if (slice->crs_ops->cro_prep) {
result = slice->crs_ops->cro_prep(env, slice);
if (result != 0)
break;
}
}
return result;
}
EXPORT_SYMBOL(cl_req_prep);
/**
* Fills in attributes that are passed to server together with transfer. Only
* attributes from \a flags may be touched. This can be called multiple times
* for the same request.
*/
void cl_req_attr_set(const struct lu_env *env, struct cl_req *req,
struct cl_req_attr *attr, u64 flags)
void cl_req_attr_set(const struct lu_env *env, struct cl_object *obj,
struct cl_req_attr *attr)
{
const struct cl_req_slice *slice;
struct cl_page *page;
unsigned int i;
struct cl_object *scan;
LASSERT(!list_empty(&req->crq_pages));
/* Take any page to use as a model. */
page = list_entry(req->crq_pages.next, struct cl_page, cp_flight);
for (i = 0; i < req->crq_nrobjs; ++i) {
list_for_each_entry(slice, &req->crq_layers, crs_linkage) {
const struct cl_page_slice *scan;
const struct cl_object *obj;
scan = cl_page_at(page,
slice->crs_dev->cd_lu_dev.ld_type);
obj = scan->cpl_obj;
if (slice->crs_ops->cro_attr_set)
slice->crs_ops->cro_attr_set(env, slice, obj,
attr + i, flags);
}
cl_object_for_each(scan, obj) {
if (scan->co_ops->coo_req_attr_set)
scan->co_ops->coo_req_attr_set(env, scan, attr);
}
}
EXPORT_SYMBOL(cl_req_attr_set);

19
drivers/staging/lustre/lustre/obdclass/cl_page.c
View File

@ -99,7 +99,6 @@ static void cl_page_free(const struct lu_env *env, struct cl_page *page)
PASSERT(env, page, list_empty(&page->cp_batch));
PASSERT(env, page, !page->cp_owner);
PASSERT(env, page, !page->cp_req);
PASSERT(env, page, page->cp_state == CPS_FREEING);
while (!list_empty(&page->cp_layers)) {
@ -150,7 +149,6 @@ struct cl_page *cl_page_alloc(const struct lu_env *env,
page->cp_type = type;
INIT_LIST_HEAD(&page->cp_layers);
INIT_LIST_HEAD(&page->cp_batch);
INIT_LIST_HEAD(&page->cp_flight);
lu_ref_init(&page->cp_reference);
head = o->co_lu.lo_header;
list_for_each_entry(o, &head->loh_layers, co_lu.lo_linkage) {
@ -528,7 +526,6 @@ static int cl_page_own0(const struct lu_env *env, struct cl_io *io,
io, nonblock);
if (result == 0) {
PASSERT(env, pg, !pg->cp_owner);
PASSERT(env, pg, !pg->cp_req);
pg->cp_owner = cl_io_top(io);
cl_page_owner_set(pg);
if (pg->cp_state != CPS_FREEING) {
@ -821,8 +818,6 @@ void cl_page_completion(const struct lu_env *env,
struct cl_sync_io *anchor = pg->cp_sync_io;
PASSERT(env, pg, crt < CRT_NR);
/* cl_page::cp_req already cleared by the caller (osc_completion()) */
PASSERT(env, pg, !pg->cp_req);
PASSERT(env, pg, pg->cp_state == cl_req_type_state(crt));
CL_PAGE_HEADER(D_TRACE, env, pg, "%d %d\n", crt, ioret);
@ -836,16 +831,8 @@ void cl_page_completion(const struct lu_env *env,
if (anchor) {
LASSERT(pg->cp_sync_io == anchor);
pg->cp_sync_io = NULL;
}
/*
* As page->cp_obj is pinned by a reference from page->cp_req, it is
* safe to call cl_page_put() without risking object destruction in a
* non-blocking context.
*/
cl_page_put(env, pg);
if (anchor)
cl_sync_io_note(env, anchor, ioret);
}
}
EXPORT_SYMBOL(cl_page_completion);
@ -927,10 +914,10 @@ void cl_page_header_print(const struct lu_env *env, void *cookie,
lu_printer_t printer, const struct cl_page *pg)
{
(*printer)(env, cookie,
"page@%p[%d %p %d %d %p %p]\n",
"page@%p[%d %p %d %d %p]\n",
pg, atomic_read(&pg->cp_ref), pg->cp_obj,
pg->cp_state, pg->cp_type,
pg->cp_owner, pg->cp_req);
pg->cp_owner);
}
EXPORT_SYMBOL(cl_page_header_print);

4
drivers/staging/lustre/lustre/obdecho/echo_client.c
View File

@ -505,9 +505,6 @@ static const struct lu_device_operations echo_device_lu_ops = {
/** @} echo_lu_dev_ops */
static const struct cl_device_operations echo_device_cl_ops = {
};
/** \defgroup echo_init Setup and teardown
*
* Init and fini functions for echo client.
@ -620,7 +617,6 @@ static struct lu_device *echo_device_alloc(const struct lu_env *env,
goto out_free;
cd->cd_lu_dev.ld_ops = &echo_device_lu_ops;
cd->cd_ops = &echo_device_cl_ops;
obd = class_name2obd(lustre_cfg_string(cfg, 0));
LASSERT(obd);

9
drivers/staging/lustre/lustre/osc/osc_cache.c
View File

@ -1340,14 +1340,6 @@ static int osc_completion(const struct lu_env *env, struct osc_async_page *oap,
"cp_state:%u, cmd:%d\n", page->cp_state, cmd);
LASSERT(opg->ops_transfer_pinned);
/*
* page->cp_req can be NULL if io submission failed before
* cl_req was allocated.
*/
if (page->cp_req)
cl_req_page_done(env, page);
LASSERT(!page->cp_req);
crt = cmd == OBD_BRW_READ ? CRT_READ : CRT_WRITE;
/* Clear opg->ops_transfer_pinned before VM lock is released. */
opg->ops_transfer_pinned = 0;
@ -1382,6 +1374,7 @@ static int osc_completion(const struct lu_env *env, struct osc_async_page *oap,
lu_ref_del(&page->cp_reference, "transfer", page);
cl_page_completion(env, page, crt, rc);
cl_page_put(env, page);
return 0;
}

21
drivers/staging/lustre/lustre/osc/osc_cl_internal.h
View File

@ -85,13 +85,6 @@ struct osc_io {
} oi_cbarg;
};
/**
* State of transfer for osc.
*/
struct osc_req {
struct cl_req_slice or_cl;
};
/**
* State maintained by osc layer for the duration of a system call.
*/
@ -115,6 +108,7 @@ struct osc_thread_info {
pgoff_t oti_next_index;
pgoff_t oti_fn_index; /* first non-overlapped index */
struct cl_sync_io oti_anchor;
struct cl_req_attr oti_req_attr;
};
struct osc_object {
@ -381,7 +375,6 @@ extern struct kmem_cache *osc_lock_kmem;
extern struct kmem_cache *osc_object_kmem;
extern struct kmem_cache *osc_thread_kmem;
extern struct kmem_cache *osc_session_kmem;
extern struct kmem_cache *osc_req_kmem;
extern struct kmem_cache *osc_extent_kmem;
extern struct lu_device_type osc_device_type;
@ -395,8 +388,6 @@ int osc_lock_init(const struct lu_env *env,
const struct cl_io *io);
int osc_io_init(const struct lu_env *env,
struct cl_object *obj, struct cl_io *io);
int osc_req_init(const struct lu_env *env, struct cl_device *dev,
struct cl_req *req);
struct lu_object *osc_object_alloc(const struct lu_env *env,
const struct lu_object_header *hdr,
struct lu_device *dev);
@ -553,6 +544,16 @@ static inline struct osc_page *oap2osc_page(struct osc_async_page *oap)
return (struct osc_page *)container_of(oap, struct osc_page, ops_oap);
}
static inline struct osc_page *
osc_cl_page_osc(struct cl_page *page, struct osc_object *osc)
{
const struct cl_page_slice *slice;
LASSERT(osc);
slice = cl_object_page_slice(&osc->oo_cl, page);
return cl2osc_page(slice);
}
static inline struct osc_lock *cl2osc_lock(const struct cl_lock_slice *slice)
{
LINVRNT(osc_is_object(&slice->cls_obj->co_lu));

13
drivers/staging/lustre/lustre/osc/osc_dev.c
View File

@ -29,7 +29,7 @@
* This file is part of Lustre, http://www.lustre.org/
* Lustre is a trademark of Sun Microsystems, Inc.
*
* Implementation of cl_device, cl_req for OSC layer.
* Implementation of cl_device, for OSC layer.
*
* Author: Nikita Danilov <nikita.danilov@sun.com>
*/
@ -49,7 +49,6 @@ struct kmem_cache *osc_lock_kmem;
struct kmem_cache *osc_object_kmem;
struct kmem_cache *osc_thread_kmem;
struct kmem_cache *osc_session_kmem;
struct kmem_cache *osc_req_kmem;
struct kmem_cache *osc_extent_kmem;
struct kmem_cache *osc_quota_kmem;
@ -74,11 +73,6 @@ struct lu_kmem_descr osc_caches[] = {
.ckd_name = "osc_session_kmem",
.ckd_size = sizeof(struct osc_session)
},
{
.ckd_cache = &osc_req_kmem,
.ckd_name = "osc_req_kmem",
.ckd_size = sizeof(struct osc_req)
},
{
.ckd_cache = &osc_extent_kmem,
.ckd_name = "osc_extent_kmem",
@ -176,10 +170,6 @@ static const struct lu_device_operations osc_lu_ops = {
.ldo_recovery_complete = NULL
};
static const struct cl_device_operations osc_cl_ops = {
.cdo_req_init = osc_req_init
};
static int osc_device_init(const struct lu_env *env, struct lu_device *d,
const char *name, struct lu_device *next)
{
@ -218,7 +208,6 @@ static struct lu_device *osc_device_alloc(const struct lu_env *env,
cl_device_init(&od->od_cl, t);
d = osc2lu_dev(od);
d->ld_ops = &osc_lu_ops;
od->od_cl.cd_ops = &osc_cl_ops;
/* Setup OSC OBD */
obd = class_name2obd(lustre_cfg_string(cfg, 0));

133
drivers/staging/lustre/lustre/osc/osc_io.c
View File

@ -49,12 +49,6 @@
*
*/
static struct osc_req *cl2osc_req(const struct cl_req_slice *slice)
{
LINVRNT(slice->crs_dev->cd_lu_dev.ld_type == &osc_device_type);
return container_of0(slice, struct osc_req, or_cl);
}
static struct osc_io *cl2osc_io(const struct lu_env *env,
const struct cl_io_slice *slice)
{
@ -64,20 +58,6 @@ static struct osc_io *cl2osc_io(const struct lu_env *env,
return oio;
}
static struct osc_page *osc_cl_page_osc(struct cl_page *page,
struct osc_object *osc)
{
const struct cl_page_slice *slice;
if (osc)
slice = cl_object_page_slice(&osc->oo_cl, page);
else
slice = cl_page_at(page, &osc_device_type);
LASSERT(slice);
return cl2osc_page(slice);
}
/*****************************************************************************
*
* io operations.
@ -883,103 +863,6 @@ static const struct cl_io_operations osc_io_ops = {
*
*/
static int osc_req_prep(const struct lu_env *env,
const struct cl_req_slice *slice)
{
return 0;
}
static void osc_req_completion(const struct lu_env *env,
const struct cl_req_slice *slice, int ioret)
{
struct osc_req *or;
or = cl2osc_req(slice);
kmem_cache_free(osc_req_kmem, or);
}
/**
* Implementation of struct cl_req_operations::cro_attr_set() for osc
* layer. osc is responsible for struct obdo::o_id and struct obdo::o_seq
* fields.
*/
static void osc_req_attr_set(const struct lu_env *env,
const struct cl_req_slice *slice,
const struct cl_object *obj,
struct cl_req_attr *attr, u64 flags)
{
struct lov_oinfo *oinfo;
struct cl_req *clerq;
struct cl_page *apage; /* _some_ page in @clerq */
struct ldlm_lock *lock; /* _some_ lock protecting @apage */
struct osc_page *opg;
struct obdo *oa;
struct ost_lvb *lvb;
oinfo = cl2osc(obj)->oo_oinfo;
lvb = &oinfo->loi_lvb;
oa = attr->cra_oa;
if ((flags & OBD_MD_FLMTIME) != 0) {
oa->o_mtime = lvb->lvb_mtime;
oa->o_valid |= OBD_MD_FLMTIME;
}
if ((flags & OBD_MD_FLATIME) != 0) {
oa->o_atime = lvb->lvb_atime;
oa->o_valid |= OBD_MD_FLATIME;
}
if ((flags & OBD_MD_FLCTIME) != 0) {
oa->o_ctime = lvb->lvb_ctime;
oa->o_valid |= OBD_MD_FLCTIME;
}
if (flags & OBD_MD_FLGROUP) {
ostid_set_seq(&oa->o_oi, ostid_seq(&oinfo->loi_oi));
oa->o_valid |= OBD_MD_FLGROUP;
}
if (flags & OBD_MD_FLID) {
ostid_set_id(&oa->o_oi, ostid_id(&oinfo->loi_oi));
oa->o_valid |= OBD_MD_FLID;
}
if (flags & OBD_MD_FLHANDLE) {
clerq = slice->crs_req;
LASSERT(!list_empty(&clerq->crq_pages));
apage = container_of(clerq->crq_pages.next,
struct cl_page, cp_flight);
opg = osc_cl_page_osc(apage, NULL);
lock = osc_dlmlock_at_pgoff(env, cl2osc(obj), osc_index(opg),
OSC_DAP_FL_TEST_LOCK | OSC_DAP_FL_CANCELING);
if (!lock && !opg->ops_srvlock) {
struct ldlm_resource *res;
struct ldlm_res_id *resname;
CL_PAGE_DEBUG(D_ERROR, env, apage, "uncovered page!\n");
resname = &osc_env_info(env)->oti_resname;
ostid_build_res_name(&oinfo->loi_oi, resname);
res = ldlm_resource_get(
osc_export(cl2osc(obj))->exp_obd->obd_namespace,
NULL, resname, LDLM_EXTENT, 0);
ldlm_resource_dump(D_ERROR, res);
dump_stack();
LBUG();
}
/* check for lockless io. */
if (lock) {
oa->o_handle = lock->l_remote_handle;
oa->o_valid |= OBD_MD_FLHANDLE;
LDLM_LOCK_PUT(lock);
}
}
}
static const struct cl_req_operations osc_req_ops = {
.cro_prep = osc_req_prep,
.cro_attr_set = osc_req_attr_set,
.cro_completion = osc_req_completion
};
int osc_io_init(const struct lu_env *env,
struct cl_object *obj, struct cl_io *io)
{
@ -990,20 +873,4 @@ int osc_io_init(const struct lu_env *env,
return 0;
}
int osc_req_init(const struct lu_env *env, struct cl_device *dev,
struct cl_req *req)
{
struct osc_req *or;
int result;
or = kmem_cache_zalloc(osc_req_kmem, GFP_NOFS);
if (or) {
cl_req_slice_add(req, &or->or_cl, dev, &osc_req_ops);
result = 0;
} else {
result = -ENOMEM;
}
return result;
}
/** @} osc */

73
drivers/staging/lustre/lustre/osc/osc_object.c
View File

@ -344,6 +344,76 @@ int osc_object_is_contended(struct osc_object *obj)
return 1;
}
/**
* Implementation of struct cl_object_operations::coo_req_attr_set() for osc
* layer. osc is responsible for struct obdo::o_id and struct obdo::o_seq
* fields.
*/
static void osc_req_attr_set(const struct lu_env *env, struct cl_object *obj,
struct cl_req_attr *attr)
{
u64 flags = attr->cra_flags;
struct lov_oinfo *oinfo;
struct ost_lvb *lvb;
struct obdo *oa;
oinfo = cl2osc(obj)->oo_oinfo;
lvb = &oinfo->loi_lvb;
oa = attr->cra_oa;
if (flags & OBD_MD_FLMTIME) {
oa->o_mtime = lvb->lvb_mtime;
oa->o_valid |= OBD_MD_FLMTIME;
}
if (flags & OBD_MD_FLATIME) {
oa->o_atime = lvb->lvb_atime;
oa->o_valid |= OBD_MD_FLATIME;
}
if (flags & OBD_MD_FLCTIME) {
oa->o_ctime = lvb->lvb_ctime;
oa->o_valid |= OBD_MD_FLCTIME;
}
if (flags & OBD_MD_FLGROUP) {
ostid_set_seq(&oa->o_oi, ostid_seq(&oinfo->loi_oi));
oa->o_valid |= OBD_MD_FLGROUP;
}
if (flags & OBD_MD_FLID) {
ostid_set_id(&oa->o_oi, ostid_id(&oinfo->loi_oi));
oa->o_valid |= OBD_MD_FLID;
}
if (flags & OBD_MD_FLHANDLE) {
struct ldlm_lock *lock;
struct osc_page *opg;
opg = osc_cl_page_osc(attr->cra_page, cl2osc(obj));
lock = osc_dlmlock_at_pgoff(env, cl2osc(obj), osc_index(opg),
OSC_DAP_FL_TEST_LOCK | OSC_DAP_FL_CANCELING);
if (!lock && !opg->ops_srvlock) {
struct ldlm_resource *res;
struct ldlm_res_id *resname;
CL_PAGE_DEBUG(D_ERROR, env, attr->cra_page,
"uncovered page!\n");
resname = &osc_env_info(env)->oti_resname;
ostid_build_res_name(&oinfo->loi_oi, resname);
res = ldlm_resource_get(
osc_export(cl2osc(obj))->exp_obd->obd_namespace,
NULL, resname, LDLM_EXTENT, 0);
ldlm_resource_dump(D_ERROR, res);
LBUG();
}
/* check for lockless io. */
if (lock) {
oa->o_handle = lock->l_remote_handle;
oa->o_valid |= OBD_MD_FLHANDLE;
LDLM_LOCK_PUT(lock);
}
}
}
static const struct cl_object_operations osc_ops = {
.coo_page_init = osc_page_init,
.coo_lock_init = osc_lock_init,
@ -352,7 +422,8 @@ static const struct cl_object_operations osc_ops = {
.coo_attr_update = osc_attr_update,
.coo_glimpse = osc_object_glimpse,
.coo_prune = osc_object_prune,
.coo_fiemap = osc_object_fiemap,
.coo_fiemap = osc_object_fiemap,
.coo_req_attr_set = osc_req_attr_set
};
static const struct lu_object_operations osc_lu_obj_ops = {

125
drivers/staging/lustre/lustre/osc/osc_request.c
View File

@ -68,7 +68,6 @@ struct osc_brw_async_args {
struct client_obd *aa_cli;
struct list_head aa_oaps;
struct list_head aa_exts;
struct cl_req *aa_clerq;
};
struct osc_async_args {
@ -1603,8 +1602,6 @@ static int brw_interpret(const struct lu_env *env,
LASSERT(list_empty(&aa->aa_exts));
LASSERT(list_empty(&aa->aa_oaps));
cl_req_completion(env, aa->aa_clerq, rc < 0 ? rc :
req->rq_bulk->bd_nob_transferred);
osc_release_ppga(aa->aa_ppga, aa->aa_page_count);
ptlrpc_lprocfs_brw(req, req->rq_bulk->bd_nob_transferred);
@ -1657,9 +1654,7 @@ int osc_build_rpc(const struct lu_env *env, struct client_obd *cli,
struct osc_brw_async_args *aa = NULL;
struct obdo *oa = NULL;
struct osc_async_page *oap;
struct osc_async_page *tmp;
struct cl_req *clerq = NULL;
enum cl_req_type crt = (cmd & OBD_BRW_WRITE) ? CRT_WRITE : CRT_READ;
struct osc_object *obj = NULL;
struct cl_req_attr *crattr = NULL;
u64 starting_offset = OBD_OBJECT_EOF;
u64 ending_offset = 0;
@ -1667,6 +1662,7 @@ int osc_build_rpc(const struct lu_env *env, struct client_obd *cli,
int mem_tight = 0;
int page_count = 0;
bool soft_sync = false;
bool interrupted = false;
int i;
int rc;
struct ost_body *body;
@ -1678,32 +1674,15 @@ int osc_build_rpc(const struct lu_env *env, struct client_obd *cli,
list_for_each_entry(ext, ext_list, oe_link) {
LASSERT(ext->oe_state == OES_RPC);
mem_tight |= ext->oe_memalloc;
list_for_each_entry(oap, &ext->oe_pages, oap_pending_item) {
++page_count;
list_add_tail(&oap->oap_rpc_item, &rpc_list);
if (starting_offset > oap->oap_obj_off)
starting_offset = oap->oap_obj_off;
else
LASSERT(oap->oap_page_off == 0);
if (ending_offset < oap->oap_obj_off + oap->oap_count)
ending_offset = oap->oap_obj_off +
oap->oap_count;
else
LASSERT(oap->oap_page_off + oap->oap_count ==
PAGE_SIZE);
}
page_count += ext->oe_nr_pages;
if (!obj)
obj = ext->oe_obj;
}
soft_sync = osc_over_unstable_soft_limit(cli);
if (mem_tight)
mpflag = cfs_memory_pressure_get_and_set();
crattr = kzalloc(sizeof(*crattr), GFP_NOFS);
if (!crattr) {
rc = -ENOMEM;
goto out;
}
pga = kcalloc(page_count, sizeof(*pga), GFP_NOFS);
if (!pga) {
rc = -ENOMEM;
@ -1717,40 +1696,43 @@ int osc_build_rpc(const struct lu_env *env, struct client_obd *cli,
}
i = 0;
list_for_each_entry(oap, &rpc_list, oap_rpc_item) {
struct cl_page *page = oap2cl_page(oap);
list_for_each_entry(ext, ext_list, oe_link) {
list_for_each_entry(oap, &ext->oe_pages, oap_pending_item) {
if (mem_tight)
oap->oap_brw_flags |= OBD_BRW_MEMALLOC;
if (soft_sync)
oap->oap_brw_flags |= OBD_BRW_SOFT_SYNC;
pga[i] = &oap->oap_brw_page;
pga[i]->off = oap->oap_obj_off + oap->oap_page_off;
i++;
if (!clerq) {
clerq = cl_req_alloc(env, page, crt,
1 /* only 1-object rpcs for now */);
if (IS_ERR(clerq)) {
rc = PTR_ERR(clerq);
goto out;
}
list_add_tail(&oap->oap_rpc_item, &rpc_list);
if (starting_offset == OBD_OBJECT_EOF ||
starting_offset > oap->oap_obj_off)
starting_offset = oap->oap_obj_off;
else
LASSERT(!oap->oap_page_off);
if (ending_offset < oap->oap_obj_off + oap->oap_count)
ending_offset = oap->oap_obj_off +
oap->oap_count;
else
LASSERT(oap->oap_page_off + oap->oap_count ==
PAGE_SIZE);
if (oap->oap_interrupted)
interrupted = true;
}
if (mem_tight)
oap->oap_brw_flags |= OBD_BRW_MEMALLOC;
if (soft_sync)
oap->oap_brw_flags |= OBD_BRW_SOFT_SYNC;
pga[i] = &oap->oap_brw_page;
pga[i]->off = oap->oap_obj_off + oap->oap_page_off;
CDEBUG(0, "put page %p index %lu oap %p flg %x to pga\n",
pga[i]->pg, oap->oap_page->index, oap,
pga[i]->flag);
i++;
cl_req_page_add(env, clerq, page);
}
/* always get the data for the obdo for the rpc */
LASSERT(clerq);
/* first page in the list */
oap = list_entry(rpc_list.next, typeof(*oap), oap_rpc_item);
crattr = &osc_env_info(env)->oti_req_attr;
memset(crattr, 0, sizeof(*crattr));
crattr->cra_type = (cmd & OBD_BRW_WRITE) ? CRT_WRITE : CRT_READ;
crattr->cra_flags = ~0ULL;
crattr->cra_page = oap2cl_page(oap);
crattr->cra_oa = oa;
cl_req_attr_set(env, clerq, crattr, ~0ULL);
rc = cl_req_prep(env, clerq);
if (rc != 0) {
CERROR("cl_req_prep failed: %d\n", rc);
goto out;
}
cl_req_attr_set(env, osc2cl(obj), crattr);
sort_brw_pages(pga, page_count);
rc = osc_brw_prep_request(cmd, cli, oa, page_count, pga, &req, 1, 0);
@ -1762,8 +1744,10 @@ int osc_build_rpc(const struct lu_env *env, struct client_obd *cli,
req->rq_commit_cb = brw_commit;
req->rq_interpret_reply = brw_interpret;
if (mem_tight != 0)
req->rq_memalloc = 1;
req->rq_memalloc = mem_tight != 0;
oap->oap_request = ptlrpc_request_addref(req);
if (interrupted && !req->rq_intr)
ptlrpc_mark_interrupted(req);
/* Need to update the timestamps after the request is built in case
* we race with setattr (locally or in queue at OST). If OST gets
@ -1773,9 +1757,8 @@ int osc_build_rpc(const struct lu_env *env, struct client_obd *cli,
*/
body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
crattr->cra_oa = &body->oa;
cl_req_attr_set(env, clerq, crattr,
OBD_MD_FLMTIME | OBD_MD_FLCTIME | OBD_MD_FLATIME);
crattr->cra_flags = OBD_MD_FLMTIME | OBD_MD_FLCTIME | OBD_MD_FLATIME;
cl_req_attr_set(env, osc2cl(obj), crattr);
lustre_msg_set_jobid(req->rq_reqmsg, crattr->cra_jobid);
CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
@ -1784,24 +1767,6 @@ int osc_build_rpc(const struct lu_env *env, struct client_obd *cli,
list_splice_init(&rpc_list, &aa->aa_oaps);
INIT_LIST_HEAD(&aa->aa_exts);
list_splice_init(ext_list, &aa->aa_exts);
aa->aa_clerq = clerq;
/* queued sync pages can be torn down while the pages
* were between the pending list and the rpc
*/
tmp = NULL;
list_for_each_entry(oap, &aa->aa_oaps, oap_rpc_item) {
/* only one oap gets a request reference */
if (!tmp)
tmp = oap;
if (oap->oap_interrupted && !req->rq_intr) {
CDEBUG(D_INODE, "oap %p in req %p interrupted\n",
oap, req);
ptlrpc_mark_interrupted(req);
}
}
if (tmp)
tmp->oap_request = ptlrpc_request_addref(req);
spin_lock(&cli->cl_loi_list_lock);
starting_offset >>= PAGE_SHIFT;
@ -1832,8 +1797,6 @@ int osc_build_rpc(const struct lu_env *env, struct client_obd *cli,
if (mem_tight != 0)
cfs_memory_pressure_restore(mpflag);
kfree(crattr);
if (rc != 0) {
LASSERT(!req);
@ -1849,8 +1812,6 @@ int osc_build_rpc(const struct lu_env *env, struct client_obd *cli,
list_del_init(&ext->oe_link);
osc_extent_finish(env, ext, 0, rc);
}
if (clerq && !IS_ERR(clerq))
cl_req_completion(env, clerq, rc);
}
return rc;
}