Viewing: osc_io.c
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
* Copyright (c) 2011, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
*
* Implementation of cl_io for OSC layer.
*
* Author: Nikita Danilov <nikita.danilov@sun.com>
* Author: Jinshan Xiong <jinshan.xiong@whamcloud.com>
*/
#define DEBUG_SUBSYSTEM S_OSC
#include <lustre_obdo.h>
#include <lustre_osc.h>
#include <linux/pagevec.h>
#include <linux/falloc.h>
#include "osc_internal.h"
#include <linux/lnet/lnet_rdma.h>
/* IO operations */
static void osc_io_fini(const struct lu_env *env, const struct cl_io_slice *io)
{
}
void osc_read_ahead_release(const struct lu_env *env, struct cl_read_ahead *ra)
{
struct ldlm_lock *dlmlock = ra->cra_dlmlock;
struct lustre_handle lockh;
ldlm_lock2handle(dlmlock, &lockh);
ldlm_lock_decref(&lockh, LCK_PR);
ldlm_lock_put(dlmlock);
}
EXPORT_SYMBOL(osc_read_ahead_release);
static int osc_io_read_ahead_prep(const struct lu_env *env,
const struct cl_io_slice *ios,
pgoff_t start, struct cl_read_ahead *ra)
{
struct osc_object *osc = cl2osc(ios->cis_obj);
struct osc_io *oio = cl2osc_io(env, ios);
struct ldlm_lock *dlmlock;
int result = -ENODATA;
ENTRY;
oio->oi_is_readahead = true;
dlmlock = osc_dlmlock_at_pgoff(env, osc, start, 0);
if (dlmlock != NULL) {
struct lov_oinfo *oinfo = osc->oo_oinfo;
pgoff_t lock_end_idx;
LASSERT(dlmlock->l_ast_data == osc);
if (dlmlock->l_req_mode != LCK_PR) {
struct lustre_handle lockh;
ldlm_lock2handle(dlmlock, &lockh);
ldlm_lock_addref(&lockh, LCK_PR);
ldlm_lock_decref(&lockh, dlmlock->l_req_mode);
}
ra->cra_rpc_pages = osc_cli(osc)->cl_max_pages_per_rpc_read;
lock_end_idx = dlmlock->l_policy_data.l_extent.end >> PAGE_SHIFT;
/* restrict RA to lock end or EOF */
ra->cra_end_idx = min_t(pgoff_t, lock_end_idx,
(oinfo->loi_kms - 1) >> PAGE_SHIFT);
ra->cra_release = osc_read_ahead_release;
ra->cra_dlmlock = dlmlock;
result = 0;
}
RETURN(result);
}
/**
* osc_io_submit() - Iterates over pages and prepares each page for IO
* @env: lustre execution environment
* @io: client I/O
* @ios: OSC specific I/O data
* @crt: Request type (Read/Write)
* @queue: Queue holding processed and already processed pages
*
* An implementation of cl_io_operations::cio_io_submit() method for osc
* layer. Iterates over pages in the in-queue, prepares each for io by calling
* cl_page_prep() and then either submits them through osc_io_submit_page()
* or, if page is already submitted, changes osc flags through
* osc_set_async_flags().
*
* Return:
* * %0 on success
* * %negative on failure
*/
int osc_io_submit(const struct lu_env *env, struct cl_io *io,
const struct cl_io_slice *ios, enum cl_req_type crt,
struct cl_2queue *queue)
{
struct cl_io *top_io = cl_io_top(io);
struct client_obd *cli = NULL;
struct osc_object *osc = NULL; /* to keep gcc happy */
struct cl_page *page;
struct osc_page *opg;
struct cl_page *tmp;
LIST_HEAD(list);
struct cl_page_list *qin = &queue->c2_qin;
struct cl_page_list *qout = &queue->c2_qout;
unsigned int queued = 0;
int result = 0;
int brw_flags;
unsigned int max_pages;
unsigned int ppc_bits; /* pages per chunk bits */
unsigned int ppc;
bool sync_queue = false;
bool dio = false;
LASSERT(qin->pl_nr > 0);
CDEBUG(D_CACHE|D_READA, "%d %d\n", qin->pl_nr, crt);
osc = cl2osc(ios->cis_obj);
cli = osc_cli(osc);
max_pages = crt == CRT_READ ? cli->cl_max_pages_per_rpc_read :
cli->cl_max_pages_per_rpc_write;
ppc_bits = cli->cl_chunkbits - PAGE_SHIFT;
ppc = 1 << ppc_bits;
brw_flags = osc_io_srvlock(cl2osc_io(env, ios)) ? OBD_BRW_SRVLOCK : 0;
brw_flags |= crt == CRT_WRITE ? OBD_BRW_WRITE : OBD_BRW_READ;
if (crt == CRT_READ && ios->cis_io->ci_ndelay)
brw_flags |= OBD_BRW_NDELAY;
page = cl_page_list_first(qin);
if (page->cp_type == CPT_TRANSIENT) {
brw_flags |= OBD_BRW_NOCACHE;
dio = true;
}
if (lnet_is_rdma_only_page(page->cp_vmpage))
brw_flags |= OBD_BRW_RDMA_ONLY;
/*
* NOTE: here @page is a top-level page. This is done to avoid
* creation of sub-page-list.
*/
cl_page_list_for_each_safe(page, tmp, qin) {
struct osc_async_page *oap;
LASSERT(top_io != NULL);
opg = osc_cl_page_osc(page, osc);
oap = &opg->ops_oap;
if (!list_empty(&oap->oap_pending_item) ||
!list_empty(&oap->oap_rpc_item)) {
CDEBUG(D_CACHE, "Busy oap %p page %p for submit.\n",
oap, opg);
result = -EBUSY;
break;
}
if (!dio) {
result = cl_page_prep(env, top_io, page, crt);
if (result != 0) {
LASSERT(result < 0);
if (result != -EALREADY)
break;
/*
* Handle -EALREADY error: for read case, the
* page is already in UPTODATE state; for
* write, the page is not dirty.
*/
result = 0;
continue;
}
}
if (!dio)
oap->oap_async_flags = ASYNC_URGENT|ASYNC_READY|
ASYNC_COUNT_STABLE;
osc_page_submit(env, opg, crt, brw_flags);
list_add_tail(&oap->oap_pending_item, &list);
if (page->cp_sync_io != NULL)
cl_page_list_move(qout, qin, page);
else /* async IO */
cl_page_list_del(env, qin, page, true);
queued++;
if (queued == max_pages) {
sync_queue = true;
} else if (crt == CRT_WRITE) {
unsigned int chunks;
unsigned int next_chunks;
chunks = (queued + ppc - 1) >> ppc_bits;
/* chunk number if add another page */
next_chunks = (queued + ppc) >> ppc_bits;
/* next page will excceed write chunk limit */
if (chunks == osc_max_write_chunks(cli) &&
next_chunks > chunks)
sync_queue = true;
}
if (sync_queue) {
result = osc_queue_sync_pages(env, top_io, osc, &list,
brw_flags);
if (result < 0)
break;
queued = 0;
sync_queue = false;
}
}
if (queued > 0)
result = osc_queue_sync_pages(env, top_io, osc, &list,
brw_flags);
/* Update c/mtime for sync write. LU-7310 */
if (crt == CRT_WRITE && qout->pl_nr > 0 && result == 0) {
struct cl_object *obj = ios->cis_obj;
struct cl_attr *attr = &osc_env_info(env)->oti_attr;
cl_object_attr_lock(obj);
attr->cat_mtime = attr->cat_ctime = ktime_get_real_seconds();
cl_object_attr_update(env, obj, attr, CAT_MTIME | CAT_CTIME);
cl_object_attr_unlock(obj);
}
CDEBUG(D_INFO, "%d/%d %d\n", qin->pl_nr, qout->pl_nr, result);
return qout->pl_nr > 0 ? 0 : result;
}
EXPORT_SYMBOL(osc_io_submit);
int osc_dio_submit(const struct lu_env *env, struct cl_io *io,
const struct cl_io_slice *ios, enum cl_req_type crt,
struct cl_dio_pages *cdp)
{
struct osc_object *osc = cl2osc(ios->cis_obj);
struct cl_io *top_io = cl_io_top(io);
struct client_obd *cli = osc_cli(osc);
struct page *vmpage;
LIST_HEAD(list);
/* pages per chunk bits */
unsigned int ppc_bits = cli->cl_chunkbits - PAGE_SHIFT;
unsigned int max_pages = crt == CRT_READ ?
cli->cl_max_pages_per_rpc_read :
cli->cl_max_pages_per_rpc_write;
unsigned int ppc = 1 << ppc_bits;
unsigned int total_queued = 0;
unsigned int queued = 0;
bool sync_queue = false;
int result = 0;
int brw_flags;
int from = -1;
int to = -1;
int i = 0;
CDEBUG(D_CACHE|D_READA, "%u %d\n", cdp->cdp_page_count, crt);
brw_flags = osc_io_srvlock(cl2osc_io(env, ios)) ? OBD_BRW_SRVLOCK : 0;
brw_flags |= crt == CRT_WRITE ? OBD_BRW_WRITE : OBD_BRW_READ;
if (crt == CRT_READ && ios->cis_io->ci_ndelay)
brw_flags |= OBD_BRW_NDELAY;
vmpage = cdp->cdp_pages[0];
brw_flags |= OBD_BRW_NOCACHE;
if (lnet_is_rdma_only_page(vmpage))
brw_flags |= OBD_BRW_RDMA_ONLY;
/*
* NOTE: here @page is a top-level page. This is done to avoid
* creation of sub-page-list.
*/
for (i = 0; i < cdp->cdp_page_count; i++) {
struct cl_page *page = cdp->cdp_cl_pages[i];
struct osc_async_page *oap;
struct osc_page *opg;
LASSERT(top_io != NULL);
opg = osc_cl_page_osc(page, osc);
oap = &opg->ops_oap;
if (from == -1)
from = i;
osc_page_submit(env, opg, crt, brw_flags);
list_add_tail(&oap->oap_pending_item, &list);
queued++;
total_queued++;
if (queued == max_pages) {
sync_queue = true;
} else if (crt == CRT_WRITE) {
unsigned int next_chunks;
unsigned int chunks;
chunks = (queued + ppc - 1) >> ppc_bits;
/* chunk number if add another page */
next_chunks = (queued + ppc) >> ppc_bits;
/* next page will excceed write chunk limit */
if (chunks == osc_max_write_chunks(cli) &&
next_chunks > chunks)
sync_queue = true;
}
to = i;
if (sync_queue) {
result = osc_queue_dio_pages(env, top_io, osc, cdp,
&list, from, to,
brw_flags);
if (result < 0)
break;
from = -1;
queued = 0;
sync_queue = false;
}
}
if (queued > 0) {
LASSERT(to != -1);
result = osc_queue_dio_pages(env, top_io, osc, cdp, &list,
from, to, brw_flags);
}
/* Update c/mtime for sync write. LU-7310 */
if (crt == CRT_WRITE && total_queued > 0 && result == 0) {
struct cl_attr *attr = &osc_env_info(env)->oti_attr;
struct cl_object *obj = ios->cis_obj;
cl_object_attr_lock(obj);
attr->cat_mtime = attr->cat_ctime = ktime_get_real_seconds();
cl_object_attr_update(env, obj, attr, CAT_MTIME | CAT_CTIME);
cl_object_attr_unlock(obj);
}
CDEBUG(D_INFO, "%d/%u %d\n", total_queued, cdp->cdp_page_count,
result);
return total_queued > 0 ? 0 : result;
}
EXPORT_SYMBOL(osc_dio_submit);
/**
* osc_page_touch_at() - Update attributes when modifying specific page,
* @env: lustre execution environment
* @obj: Pointer to cl_object
* @idx: start offset
* @to: size of @idx
*
* This is called to update the attributes when modifying a specific page,
* both when making new pages and when doing updates to existing cached pages.
*
* Expand stripe KMS if necessary.
*/
void osc_page_touch_at(const struct lu_env *env, struct cl_object *obj,
pgoff_t idx, size_t to)
{
struct lov_oinfo *loi = cl2osc(obj)->oo_oinfo;
struct cl_attr *attr = &osc_env_info(env)->oti_attr;
enum cl_attr_valid valid;
__u64 kms;
ENTRY;
/* offset within stripe */
kms = (idx << PAGE_SHIFT) + to;
cl_object_attr_lock(obj);
CDEBUG(D_INODE, "stripe KMS %sincreasing %llu->%llu %llu\n",
kms > loi->loi_kms ? "" : "not ", loi->loi_kms, kms,
loi->loi_lvb.lvb_size);
attr->cat_mtime = attr->cat_ctime = ktime_get_real_seconds();
valid = CAT_MTIME | CAT_CTIME;
if (kms > loi->loi_kms) {
attr->cat_kms = kms;
valid |= CAT_KMS;
}
if (kms > loi->loi_lvb.lvb_size) {
attr->cat_size = kms;
valid |= CAT_SIZE;
}
cl_object_attr_update(env, obj, attr, valid);
cl_object_attr_unlock(obj);
EXIT;
}
int osc_io_commit_async(const struct lu_env *env,
const struct cl_io_slice *ios,
struct cl_page_list *qin, int from, int to,
cl_commit_cbt cb, enum cl_io_priority prio)
{
struct cl_io *io = ios->cis_io;
struct osc_io *oio = cl2osc_io(env, ios);
struct osc_object *osc = cl2osc(ios->cis_obj);
struct cl_page *page;
struct cl_page *last_page;
struct osc_page *opg;
struct folio_batch *fbatch = &osc_env_info(env)->oti_fbatch;
int result = 0;
ENTRY;
LASSERT(qin->pl_nr > 0);
/* Handle partial page cases */
last_page = cl_page_list_last(qin);
if (oio->oi_lockless) {
page = cl_page_list_first(qin);
if (page == last_page) {
cl_page_clip(env, page, from, to);
} else {
if (from != 0)
cl_page_clip(env, page, from, PAGE_SIZE);
if (to != PAGE_SIZE)
cl_page_clip(env, last_page, 0, to);
}
}
ll_folio_batch_init(fbatch);
while (qin->pl_nr > 0) {
struct osc_async_page *oap;
page = cl_page_list_first(qin);
opg = osc_cl_page_osc(page, osc);
oap = &opg->ops_oap;
if (!list_empty(&oap->oap_rpc_item)) {
CDEBUG(D_CACHE, "Busy oap %p page %p for submit.\n",
oap, opg);
result = -EBUSY;
break;
}
/* The page may be already in dirty cache. */
if (list_empty(&oap->oap_pending_item)) {
result = osc_page_cache_add(env, osc, opg, io, cb);
if (result != 0)
break;
}
osc_page_touch_at(env, osc2cl(osc), osc_index(opg),
page == last_page ? to : PAGE_SIZE);
cl_page_list_del(env, qin, page, true);
/* if there are no more slots, do the callback & reinit */
if (!folio_batch_add_page(fbatch, page->cp_vmpage)) {
(*cb)(env, io, fbatch);
folio_batch_reinit(fbatch);
}
}
/* The shrink interval is in seconds, so we can update it once per
* write, rather than once per page.
*/
osc_update_next_shrink(osc_cli(osc));
/* Clean up any partially full folio_batches */
if (folio_batch_count(fbatch) != 0)
(*cb)(env, io, fbatch);
/* Can't access these pages any more. Page can be in transfer and
* complete at any time. */
/* for sync write, kernel will wait for this page to be flushed before
* osc_io_end() is called, so release it earlier.
* for mkwrite(), it's known there is no further pages. */
if (cl_io_is_sync_write(io) && oio->oi_active) {
osc_extent_release(env, oio->oi_active, prio);
oio->oi_active = NULL;
}
CDEBUG(D_INFO, "%d %d\n", qin->pl_nr, result);
RETURN(result);
}
EXPORT_SYMBOL(osc_io_commit_async);
void osc_io_extent_release(const struct lu_env *env,
const struct cl_io_slice *ios,
enum cl_io_priority prio)
{
struct osc_io *oio = cl2osc_io(env, ios);
if (oio->oi_active != NULL) {
osc_extent_release(env, oio->oi_active, prio);
oio->oi_active = NULL;
}
}
EXPORT_SYMBOL(osc_io_extent_release);
static bool osc_import_not_healthy(struct obd_import *imp)
{
return test_bit(IMPF_INVALID, imp->imp_flags) ||
test_bit(IMPF_DEACTIVE, imp->imp_flags) ||
!(imp->imp_state == LUSTRE_IMP_FULL ||
imp->imp_state == LUSTRE_IMP_IDLE);
}
int osc_io_iter_init(const struct lu_env *env, const struct cl_io_slice *ios)
{
struct osc_object *osc = cl2osc(ios->cis_obj);
struct obd_import *imp = osc_cli(osc)->cl_import;
struct osc_io *oio = osc_env_io(env);
int rc = -EIO;
ENTRY;
spin_lock(&imp->imp_lock);
/**
* check whether this OSC device is available for non-delay read,
* fast switching mirror if we haven't tried all mirrors.
*/
if (ios->cis_io->ci_type == CIT_READ && ios->cis_io->ci_ndelay &&
!ios->cis_io->ci_tried_all_mirrors && osc_import_not_healthy(imp)) {
rc = -EAGAIN;
} else if (likely(!test_bit(IMPF_INVALID, imp->imp_flags))) {
atomic_inc(&osc->oo_nr_ios);
oio->oi_is_active = 1;
rc = 0;
}
spin_unlock(&imp->imp_lock);
if (capable(CAP_SYS_RESOURCE))
oio->oi_cap_sys_resource = 1;
RETURN(rc);
}
EXPORT_SYMBOL(osc_io_iter_init);
void osc_io_iter_fini(const struct lu_env *env,
const struct cl_io_slice *ios)
{
struct osc_io *oio = osc_env_io(env);
if (oio->oi_is_active) {
struct osc_object *osc = cl2osc(ios->cis_obj);
oio->oi_is_active = 0;
LASSERT(atomic_read(&osc->oo_nr_ios) > 0);
if (atomic_dec_and_test(&osc->oo_nr_ios))
wake_up(&osc->oo_io_waitq);
}
}
EXPORT_SYMBOL(osc_io_iter_fini);
void osc_io_rw_iter_fini(const struct lu_env *env,
const struct cl_io_slice *ios)
{
struct osc_io *oio = osc_env_io(env);
struct osc_object *osc = cl2osc(ios->cis_obj);
if (oio->oi_lru_reserved > 0) {
osc_lru_unreserve(osc_cli(osc), oio->oi_lru_reserved);
oio->oi_lru_reserved = 0;
}
oio->oi_write_osclock = NULL;
oio->oi_read_osclock = NULL;
osc_io_iter_fini(env, ios);
}
EXPORT_SYMBOL(osc_io_rw_iter_fini);
int osc_io_fault_start(const struct lu_env *env, const struct cl_io_slice *ios)
{
struct cl_io *io;
struct cl_fault_io *fio;
ENTRY;
io = ios->cis_io;
fio = &io->u.ci_fault;
CDEBUG(D_INFO, "%lu %d %zu\n",
fio->ft_index, fio->ft_writable, fio->ft_bytes);
/*
* If mapping is writeable, adjust kms to cover this page,
* but do not extend kms beyond actual file size.
* See bug 10919.
*/
if (fio->ft_writable)
osc_page_touch_at(env, ios->cis_obj,
fio->ft_index, fio->ft_bytes);
RETURN(0);
}
EXPORT_SYMBOL(osc_io_fault_start);
static int osc_async_upcall(void *a, int rc)
{
struct osc_async_cbargs *args = a;
args->opc_rc = rc;
complete(&args->opc_sync);
return 0;
}
/**
* trunc_check_cb() - Checks that there are no pages being written in the
* extent being truncated.
* @env: lustre execution environment
* @io: Pointer to the cl_io struct.
* @pvec: Array of osc_page struct to check.
* @count: number of osc_page struct in pvec.
* @cbdata: This isstart of the truncated extent.
*
* Returns Always returns %true
*/
static bool trunc_check_cb(const struct lu_env *env, struct cl_io *io,
void **pvec, int count, void *cbdata)
{
int i;
for (i = 0; i < count; i++) {
struct osc_page *ops = pvec[i];
struct cl_page *page = ops->ops_cl.cpl_page;
struct osc_async_page *oap;
__u64 start = *(__u64 *)cbdata;
oap = &ops->ops_oap;
if (oap->oap_cmd & OBD_BRW_WRITE &&
!list_empty(&oap->oap_pending_item))
CL_PAGE_DEBUG(D_ERROR, env, page, "exists %llu/%s.\n",
start, current->comm);
if (PageLocked(page->cp_vmpage))
CDEBUG(D_CACHE, "page %p index %lu locked for cmd=%d\n",
ops, osc_index(ops), oap->oap_cmd);
}
return true;
}
static void osc_trunc_check(const struct lu_env *env, struct cl_io *io,
struct osc_io *oio, __u64 size)
{
struct cl_object *clob;
int partial;
pgoff_t start;
clob = oio->oi_cl.cis_obj;
start = size >> PAGE_SHIFT;
partial = (start << PAGE_SHIFT) < size;
/* Complain if there are pages in the truncated region. */
osc_page_gang_lookup(env, io, cl2osc(clob),
start + partial, CL_PAGE_EOF,
trunc_check_cb, (void *)&size);
}
/**
* osc_punch_start() - Flush affected pages prior punch.
* @env: lustre execution environment
* @io: Pointer to the client I/O struct
* @obj: Pointer to the cl_object (this is the respective file)
*
* We shouldn't discard them locally first because that could be data loss
* if server doesn't support fallocate punch, we also need these data to be
* flushed first to prevent re-ordering with the punch
*
* * Return:
* * %0 on success.
* * %negative on error
*/
int osc_punch_start(const struct lu_env *env, struct cl_io *io,
struct cl_object *obj)
{
struct osc_object *osc = cl2osc(obj);
pgoff_t pg_start = io->u.ci_setattr.sa_falloc_offset >> PAGE_SHIFT;
pgoff_t pg_end = (io->u.ci_setattr.sa_falloc_end - 1) >> PAGE_SHIFT;
int rc;
ENTRY;
rc = osc_cache_writeback_range(env, osc, pg_start, pg_end, 1, 0,
IO_PRIO_NORMAL);
if (rc < 0)
RETURN(rc);
osc_page_gang_lookup(env, io, osc, pg_start, pg_end, osc_discard_cb,
osc);
RETURN(0);
}
EXPORT_SYMBOL(osc_punch_start);
static inline void osc_set_projid_info(const struct lu_env *env,
struct cl_object *obj, struct obdo *oa)
{
if (!(oa->o_valid & OBD_MD_FLPROJID))
cl_req_projid_set(env, obj, &oa->o_projid);
}
static int osc_io_setattr_start(const struct lu_env *env,
const struct cl_io_slice *slice)
{
struct cl_io *io = slice->cis_io;
struct osc_io *oio = cl2osc_io(env, slice);
struct cl_object *obj = slice->cis_obj;
struct lov_oinfo *loi = cl2osc(obj)->oo_oinfo;
struct cl_attr *attr = &osc_env_info(env)->oti_attr;
struct obdo *oa = &oio->oi_oa;
struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
unsigned int ia_avalid = io->u.ci_setattr.sa_avalid;
enum op_xvalid ia_xvalid = io->u.ci_setattr.sa_xvalid;
int result = 0;
__u64 size = io->u.ci_setattr.sa_attr.lvb_size;
bool io_is_falloc = cl_io_is_fallocate(io);
ENTRY;
/* truncate cache dirty pages first */
if (cl_io_is_trunc(io))
result = osc_cache_truncate_start(env, cl2osc(obj), size,
&oio->oi_trunc);
/* flush local pages prior punching/zero-range them on server */
if (io_is_falloc &&
(io->u.ci_setattr.sa_falloc_mode &
(FALLOC_FL_PUNCH_HOLE | FALLOC_FL_ZERO_RANGE)))
result = osc_punch_start(env, io, obj);
if (result == 0 && oio->oi_lockless == 0) {
cl_object_attr_lock(obj);
result = cl_object_attr_get(env, obj, attr);
if (result == 0) {
struct ost_lvb *lvb = &io->u.ci_setattr.sa_attr;
enum cl_attr_valid cl_valid = 0;
if (ia_avalid & ATTR_SIZE) {
attr->cat_size = size;
attr->cat_kms = size;
cl_valid = (CAT_SIZE | CAT_KMS);
}
if (ia_avalid & ATTR_MTIME_SET) {
attr->cat_mtime = lvb->lvb_mtime;
cl_valid |= CAT_MTIME;
}
if (ia_avalid & ATTR_ATIME_SET) {
attr->cat_atime = lvb->lvb_atime;
cl_valid |= CAT_ATIME;
}
if (ia_avalid & ATTR_CTIME_SET) {
attr->cat_ctime = lvb->lvb_ctime;
cl_valid |= CAT_CTIME;
}
result = cl_object_attr_update(env, obj, attr,
cl_valid);
}
cl_object_attr_unlock(obj);
}
memset(oa, 0, sizeof(*oa));
if (result == 0) {
oa->o_oi = loi->loi_oi;
osc_set_projid_info(env, obj, oa);
obdo_set_parent_fid(oa, io->u.ci_setattr.sa_parent_fid);
oa->o_stripe_idx = io->u.ci_setattr.sa_stripe_index;
oa->o_layout = io->u.ci_setattr.sa_layout;
oa->o_valid |= OBD_MD_FLID | OBD_MD_FLGROUP |
OBD_MD_FLOSTLAYOUT;
if (ia_avalid & ATTR_CTIME) {
oa->o_valid |= OBD_MD_FLCTIME;
oa->o_ctime = attr->cat_ctime;
}
if (ia_avalid & ATTR_ATIME) {
oa->o_valid |= OBD_MD_FLATIME;
oa->o_atime = attr->cat_atime;
}
if (ia_avalid & ATTR_MTIME) {
oa->o_valid |= OBD_MD_FLMTIME;
oa->o_mtime = attr->cat_mtime;
}
if (ia_avalid & ATTR_SIZE || io_is_falloc) {
if (oio->oi_lockless) {
oa->o_flags = OBD_FL_SRVLOCK;
oa->o_valid |= OBD_MD_FLFLAGS;
}
if (io->ci_layout_version > 0) {
/* verify layout version */
oa->o_valid |= OBD_MD_LAYOUT_VERSION;
oa->o_layout_version = io->ci_layout_version;
}
} else {
LASSERT(oio->oi_lockless == 0);
}
if (ia_xvalid & OP_XVALID_FLAGS) {
oa->o_flags = io->u.ci_setattr.sa_attr_flags;
oa->o_valid |= OBD_MD_FLFLAGS;
}
init_completion(&cbargs->opc_sync);
if (io_is_falloc) {
int falloc_mode = io->u.ci_setattr.sa_falloc_mode;
oa->o_size = io->u.ci_setattr.sa_falloc_offset;
oa->o_blocks = io->u.ci_setattr.sa_falloc_end;
oa->o_uid = io->u.ci_setattr.sa_attr_uid;
oa->o_gid = io->u.ci_setattr.sa_attr_gid;
oa->o_projid = io->u.ci_setattr.sa_attr_projid;
oa->o_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS |
OBD_MD_FLUID | OBD_MD_FLGID | OBD_MD_FLPROJID;
CDEBUG(D_INODE,
"size %llu blocks %llu uid %u gid %u prjid %u\n",
oa->o_size, oa->o_blocks, oa->o_uid, oa->o_gid,
oa->o_projid);
result = osc_fallocate_base(osc_export(cl2osc(obj)),
oa, osc_async_upcall,
cbargs, falloc_mode);
} else if (ia_avalid & ATTR_SIZE) {
oa->o_size = size;
oa->o_blocks = OBD_OBJECT_EOF;
oa->o_uid = io->u.ci_setattr.sa_attr_uid;
oa->o_gid = io->u.ci_setattr.sa_attr_gid;
oa->o_projid = io->u.ci_setattr.sa_attr_projid;
oa->o_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS |
OBD_MD_FLUID | OBD_MD_FLGID |
OBD_MD_FLPROJID;
result = osc_punch_send(osc_export(cl2osc(obj)),
oa, osc_async_upcall, cbargs);
} else {
result = osc_setattr_async(osc_export(cl2osc(obj)),
oa, osc_async_upcall,
cbargs, PTLRPCD_SET);
}
cbargs->opc_rpc_sent = result == 0;
}
RETURN(result);
}
void osc_io_setattr_end(const struct lu_env *env,
const struct cl_io_slice *slice)
{
struct cl_io *io = slice->cis_io;
struct osc_io *oio = cl2osc_io(env, slice);
struct cl_object *obj = slice->cis_obj;
struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
struct cl_attr *attr = &osc_env_info(env)->oti_attr;
struct obdo *oa = &oio->oi_oa;
enum cl_attr_valid cl_valid = 0;
int result = 0;
if (cbargs->opc_rpc_sent) {
wait_for_completion(&cbargs->opc_sync);
result = io->ci_result = cbargs->opc_rc;
}
if (cl_io_is_trunc(io)) {
__u64 size = io->u.ci_setattr.sa_attr.lvb_size;
if (result == 0) {
cl_object_attr_lock(obj);
if (oa->o_valid & OBD_MD_FLBLOCKS) {
attr->cat_blocks = oa->o_blocks;
cl_valid |= CAT_BLOCKS;
}
cl_object_attr_update(env, obj, attr, cl_valid);
cl_object_attr_unlock(obj);
}
osc_trunc_check(env, io, oio, size);
osc_cache_truncate_end(env, oio->oi_trunc);
oio->oi_trunc = NULL;
}
if (cl_io_is_fallocate(io)) {
if (result == 0) {
cl_object_attr_lock(obj);
/* update blocks */
if (oa->o_valid & OBD_MD_FLBLOCKS) {
attr->cat_blocks = oa->o_blocks;
cl_valid |= CAT_BLOCKS;
}
cl_object_attr_update(env, obj, attr, cl_valid);
cl_object_attr_unlock(obj);
}
}
}
EXPORT_SYMBOL(osc_io_setattr_end);
struct osc_data_version_args {
struct osc_io *dva_oio;
};
static int
osc_data_version_interpret(const struct lu_env *env, struct ptlrpc_request *req,
void *args, int rc)
{
struct osc_data_version_args *dva = args;
struct osc_io *oio = dva->dva_oio;
const struct ost_body *body;
ENTRY;
if (rc < 0)
GOTO(out, rc);
body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
if (body == NULL)
GOTO(out, rc = -EPROTO);
lustre_get_wire_obdo(&req->rq_import->imp_connect_data, &oio->oi_oa,
&body->oa);
EXIT;
out:
oio->oi_cbarg.opc_rc = rc;
complete(&oio->oi_cbarg.opc_sync);
return 0;
}
static int osc_io_data_version_start(const struct lu_env *env,
const struct cl_io_slice *slice)
{
struct cl_data_version_io *dv = &slice->cis_io->u.ci_data_version;
struct osc_io *oio = cl2osc_io(env, slice);
struct obdo *oa = &oio->oi_oa;
struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
struct osc_object *obj = cl2osc(slice->cis_obj);
struct lov_oinfo *loi = obj->oo_oinfo;
struct obd_export *exp = osc_export(obj);
struct ptlrpc_request *req;
struct ost_body *body;
struct osc_data_version_args *dva;
int rc;
ENTRY;
memset(oa, 0, sizeof(*oa));
oa->o_oi = loi->loi_oi;
oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
osc_set_projid_info(env, slice->cis_obj, oa);
if (dv->dv_flags & (LL_DV_RD_FLUSH | LL_DV_WR_FLUSH)) {
oa->o_valid |= OBD_MD_FLFLAGS;
oa->o_flags |= OBD_FL_SRVLOCK;
if (dv->dv_flags & LL_DV_WR_FLUSH)
oa->o_flags |= OBD_FL_FLUSH;
}
init_completion(&cbargs->opc_sync);
req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_GETATTR);
if (req == NULL)
RETURN(-ENOMEM);
rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GETATTR);
if (rc < 0) {
ptlrpc_request_free(req);
RETURN(rc);
}
body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa, oa);
ptlrpc_request_set_replen(req);
req->rq_interpret_reply = osc_data_version_interpret;
dva = ptlrpc_req_async_args(dva, req);
dva->dva_oio = oio;
ptlrpcd_add_req(req);
RETURN(0);
}
static void osc_io_data_version_end(const struct lu_env *env,
const struct cl_io_slice *slice)
{
struct cl_data_version_io *dv = &slice->cis_io->u.ci_data_version;
struct osc_io *oio = cl2osc_io(env, slice);
struct cl_object *obj = slice->cis_obj;
struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
struct cl_attr *attr = &osc_env_info(env)->oti_attr;
struct obdo *oa = &oio->oi_oa;
enum cl_attr_valid cl_valid = 0;
ENTRY;
wait_for_completion(&cbargs->opc_sync);
if (cbargs->opc_rc != 0) {
slice->cis_io->ci_result = cbargs->opc_rc;
} else {
slice->cis_io->ci_result = 0;
if (!(oa->o_valid &
(OBD_MD_LAYOUT_VERSION | OBD_MD_FLDATAVERSION)))
slice->cis_io->ci_result = -EOPNOTSUPP;
if (oa->o_valid & OBD_MD_LAYOUT_VERSION)
dv->dv_layout_version = oa->o_layout_version;
if (oa->o_valid & OBD_MD_FLDATAVERSION)
dv->dv_data_version = oa->o_data_version;
if (dv->dv_flags & LL_DV_SZ_UPDATE) {
if (oa->o_valid & OBD_MD_FLSIZE) {
attr->cat_size = oa->o_size;
cl_valid |= CAT_SIZE;
}
if (oa->o_valid & OBD_MD_FLBLOCKS) {
attr->cat_blocks = oa->o_blocks;
cl_valid |= CAT_BLOCKS;
}
cl_object_attr_lock(obj);
cl_object_attr_update(env, obj, attr, cl_valid);
cl_object_attr_unlock(obj);
}
}
EXIT;
}
int osc_io_read_start(const struct lu_env *env,
const struct cl_io_slice *slice)
{
struct cl_object *obj = slice->cis_obj;
struct cl_attr *attr = &osc_env_info(env)->oti_attr;
int rc = 0;
ENTRY;
if (!slice->cis_io->ci_noatime) {
cl_object_attr_lock(obj);
attr->cat_atime = ktime_get_real_seconds();
rc = cl_object_attr_update(env, obj, attr, CAT_ATIME);
cl_object_attr_unlock(obj);
}
RETURN(rc);
}
EXPORT_SYMBOL(osc_io_read_start);
int osc_io_write_start(const struct lu_env *env,
const struct cl_io_slice *slice)
{
struct cl_object *obj = slice->cis_obj;
struct cl_attr *attr = &osc_env_info(env)->oti_attr;
int rc = 0;
ENTRY;
CFS_FAIL_TIMEOUT(OBD_FAIL_OSC_DELAY_SETTIME, 1);
cl_object_attr_lock(obj);
attr->cat_mtime = attr->cat_ctime = ktime_get_real_seconds();
rc = cl_object_attr_update(env, obj, attr, CAT_MTIME | CAT_CTIME);
cl_object_attr_unlock(obj);
RETURN(rc);
}
EXPORT_SYMBOL(osc_io_write_start);
int osc_fsync_ost(const struct lu_env *env, struct osc_object *obj,
struct cl_fsync_io *fio)
{
struct osc_io *oio = osc_env_io(env);
struct obdo *oa = &oio->oi_oa;
struct lov_oinfo *loi = obj->oo_oinfo;
struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
int rc = 0;
ENTRY;
memset(oa, 0, sizeof(*oa));
oa->o_oi = loi->loi_oi;
oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
osc_set_projid_info(env, osc2cl(obj), oa);
/* reload size abd blocks for start and end of sync range */
oa->o_size = fio->fi_start;
oa->o_blocks = fio->fi_end;
oa->o_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
obdo_set_parent_fid(oa, fio->fi_fid);
init_completion(&cbargs->opc_sync);
rc = osc_sync_base(obj, oa, osc_async_upcall, cbargs, PTLRPCD_SET);
RETURN(rc);
}
EXPORT_SYMBOL(osc_fsync_ost);
static int osc_io_fsync_start(const struct lu_env *env,
const struct cl_io_slice *slice)
{
struct cl_io *io = slice->cis_io;
struct cl_fsync_io *fio = &io->u.ci_fsync;
struct cl_object *obj = slice->cis_obj;
struct osc_object *osc = cl2osc(obj);
pgoff_t start = fio->fi_start >> PAGE_SHIFT;
pgoff_t end = fio->fi_end >> PAGE_SHIFT;
int result = 0;
ENTRY;
if (fio->fi_mode == CL_FSYNC_RECLAIM) {
struct client_obd *cli = osc_cli(osc);
if (!atomic_read(&osc->oo_nr_ios) &&
!atomic_read(&osc->oo_nr_writes) &&
!atomic_long_read(&cli->cl_unstable_count)) {
/*
* No active I/O, no dirty pages needing to write and
* no unstable pages needing to commit.
*/
CDEBUG(D_CACHE,
"%s: unstable/dirty counts are both zero\n",
cli_name(cli));
RETURN(0);
}
}
if (fio->fi_end == OBD_OBJECT_EOF)
end = CL_PAGE_EOF;
result = osc_cache_writeback_range(env, osc, start, end, 0,
fio->fi_mode == CL_FSYNC_DISCARD,
fio->fi_prio);
if (result < 0 && fio->fi_mode == CL_FSYNC_DISCARD) {
CDEBUG(D_CACHE,
"%s: ignore error %d on discarding "DFID":[%lu-%lu]\n",
cli_name(osc_cli(osc)), result, PFID(fio->fi_fid),
start, end);
result = 0;
}
if (result > 0) {
fio->fi_nr_written += result;
result = 0;
}
if (fio->fi_mode == CL_FSYNC_ALL || fio->fi_mode == CL_FSYNC_RECLAIM) {
struct osc_io *oio = cl2osc_io(env, slice);
struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
int rc;
/* we have to wait for writeback to finish before we can
* send OST_SYNC RPC. This is bad because it causes extents
* to be written osc by osc. However, we usually start
* writeback before CL_FSYNC_ALL so this won't have any real
* problem.
* We do not have to wait for waitback to finish in the memory
* reclaim environment.
*/
if (fio->fi_mode == CL_FSYNC_ALL) {
rc = osc_cache_wait_range(env, osc, start, end);
if (result == 0)
result = rc;
}
rc = osc_fsync_ost(env, osc, fio);
if (result == 0) {
cbargs->opc_rpc_sent = 1;
result = rc;
}
}
RETURN(result);
}
void osc_io_fsync_end(const struct lu_env *env,
const struct cl_io_slice *slice)
{
struct cl_fsync_io *fio = &slice->cis_io->u.ci_fsync;
struct cl_object *obj = slice->cis_obj;
struct osc_io *oio = cl2osc_io(env, slice);
struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
pgoff_t start = fio->fi_start >> PAGE_SHIFT;
pgoff_t end = fio->fi_end >> PAGE_SHIFT;
int result = 0;
if (fio->fi_mode == CL_FSYNC_LOCAL) {
result = osc_cache_wait_range(env, cl2osc(obj), start, end);
} else if (cbargs->opc_rpc_sent && (fio->fi_mode == CL_FSYNC_ALL ||
fio->fi_mode == CL_FSYNC_RECLAIM)) {
wait_for_completion(&cbargs->opc_sync);
if (result == 0)
result = cbargs->opc_rc;
}
slice->cis_io->ci_result = result;
}
EXPORT_SYMBOL(osc_io_fsync_end);
static int osc_io_ladvise_start(const struct lu_env *env,
const struct cl_io_slice *slice)
{
int result = 0;
struct cl_io *io = slice->cis_io;
struct osc_io *oio = cl2osc_io(env, slice);
struct cl_object *obj = slice->cis_obj;
struct lov_oinfo *loi = cl2osc(obj)->oo_oinfo;
struct cl_ladvise_io *lio = &io->u.ci_ladvise;
struct obdo *oa = &oio->oi_oa;
struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
struct lu_ladvise *ladvise;
struct ladvise_hdr *ladvise_hdr;
int buf_size;
int num_advise = 1;
ENTRY;
/* TODO: add multiple ladvise support in CLIO */
buf_size = offsetof(typeof(*ladvise_hdr), lah_advise[num_advise]);
if (osc_env_info(env)->oti_ladvise_buf.lb_len < buf_size)
lu_buf_realloc(&osc_env_info(env)->oti_ladvise_buf, buf_size);
ladvise_hdr = osc_env_info(env)->oti_ladvise_buf.lb_buf;
if (ladvise_hdr == NULL)
RETURN(-ENOMEM);
memset(ladvise_hdr, 0, buf_size);
ladvise_hdr->lah_magic = LADVISE_MAGIC;
ladvise_hdr->lah_count = num_advise;
ladvise_hdr->lah_flags = lio->lio_flags;
memset(oa, 0, sizeof(*oa));
oa->o_oi = loi->loi_oi;
oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
osc_set_projid_info(env, obj, oa);
obdo_set_parent_fid(oa, lio->lio_fid);
ladvise = ladvise_hdr->lah_advise;
ladvise->lla_start = lio->lio_start;
ladvise->lla_end = lio->lio_end;
ladvise->lla_advice = lio->lio_advice;
if (lio->lio_flags & LF_ASYNC) {
result = osc_ladvise_base(osc_export(cl2osc(obj)), oa,
ladvise_hdr, NULL, NULL, NULL);
} else {
init_completion(&cbargs->opc_sync);
result = osc_ladvise_base(osc_export(cl2osc(obj)), oa,
ladvise_hdr, osc_async_upcall,
cbargs, PTLRPCD_SET);
cbargs->opc_rpc_sent = result == 0;
}
RETURN(result);
}
static void osc_io_ladvise_end(const struct lu_env *env,
const struct cl_io_slice *slice)
{
struct cl_io *io = slice->cis_io;
struct osc_io *oio = cl2osc_io(env, slice);
struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
int result = 0;
struct cl_ladvise_io *lio = &io->u.ci_ladvise;
if ((!(lio->lio_flags & LF_ASYNC)) && cbargs->opc_rpc_sent) {
wait_for_completion(&cbargs->opc_sync);
result = cbargs->opc_rc;
}
slice->cis_io->ci_result = result;
}
void osc_io_end(const struct lu_env *env, const struct cl_io_slice *slice)
{
struct osc_io *oio = cl2osc_io(env, slice);
if (oio->oi_active) {
osc_extent_release(env, oio->oi_active, IO_PRIO_NORMAL);
oio->oi_active = NULL;
}
}
EXPORT_SYMBOL(osc_io_end);
struct osc_lseek_args {
struct osc_io *lsa_oio;
};
static int osc_lseek_interpret(const struct lu_env *env,
struct ptlrpc_request *req,
void *arg, int rc)
{
struct ost_body *reply;
struct osc_lseek_args *lsa = arg;
struct osc_io *oio = lsa->lsa_oio;
struct cl_io *io = oio->oi_cl.cis_io;
struct cl_lseek_io *lsio = &io->u.ci_lseek;
ENTRY;
if (rc != 0)
GOTO(out, rc);
reply = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
if (reply == NULL)
GOTO(out, rc = -EPROTO);
lsio->ls_result = reply->oa.o_size;
out:
osc_async_upcall(&oio->oi_cbarg, rc);
RETURN(rc);
}
int osc_io_lseek_start(const struct lu_env *env,
const struct cl_io_slice *slice)
{
struct cl_io *io = slice->cis_io;
struct osc_io *oio = cl2osc_io(env, slice);
struct cl_object *obj = slice->cis_obj;
struct lov_oinfo *loi = cl2osc(obj)->oo_oinfo;
struct cl_lseek_io *lsio = &io->u.ci_lseek;
struct obdo *oa = &oio->oi_oa;
struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
struct obd_export *exp = osc_export(cl2osc(obj));
struct ptlrpc_request *req;
struct ost_body *body;
struct osc_lseek_args *lsa;
int rc = 0;
ENTRY;
/* No negative values at this point */
LASSERT(lsio->ls_start >= 0);
LASSERT(lsio->ls_whence == SEEK_HOLE || lsio->ls_whence == SEEK_DATA);
/* with IO lock taken we have object size in LVB and can check
* boundaries prior sending LSEEK RPC
*/
if (lsio->ls_start >= loi->loi_lvb.lvb_size) {
/* consider area beyond end of object as hole */
if (lsio->ls_whence == SEEK_HOLE)
lsio->ls_result = lsio->ls_start;
else
lsio->ls_result = -ENXIO;
RETURN(0);
}
/* if LSEEK RPC is not supported by server, consider whole stripe
* object is data with hole after end of object
*/
if (!exp_connect_lseek(exp)) {
if (lsio->ls_whence == SEEK_HOLE)
lsio->ls_result = loi->loi_lvb.lvb_size;
else
lsio->ls_result = lsio->ls_start;
RETURN(0);
}
memset(oa, 0, sizeof(*oa));
oa->o_oi = loi->loi_oi;
oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
osc_set_projid_info(env, obj, oa);
oa->o_size = lsio->ls_start;
oa->o_mode = lsio->ls_whence;
if (oio->oi_lockless) {
oa->o_flags = OBD_FL_SRVLOCK;
oa->o_valid |= OBD_MD_FLFLAGS;
}
init_completion(&cbargs->opc_sync);
req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_SEEK);
if (req == NULL)
RETURN(-ENOMEM);
rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SEEK);
if (rc < 0) {
ptlrpc_request_free(req);
RETURN(rc);
}
body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa, oa);
ptlrpc_request_set_replen(req);
req->rq_interpret_reply = osc_lseek_interpret;
lsa = ptlrpc_req_async_args(lsa, req);
lsa->lsa_oio = oio;
ptlrpcd_add_req(req);
cbargs->opc_rpc_sent = 1;
RETURN(0);
}
EXPORT_SYMBOL(osc_io_lseek_start);
void osc_io_lseek_end(const struct lu_env *env,
const struct cl_io_slice *slice)
{
struct osc_io *oio = cl2osc_io(env, slice);
struct osc_async_cbargs *cbargs = &oio->oi_cbarg;
int rc = 0;
if (cbargs->opc_rpc_sent) {
wait_for_completion(&cbargs->opc_sync);
rc = cbargs->opc_rc;
}
slice->cis_io->ci_result = rc;
}
EXPORT_SYMBOL(osc_io_lseek_end);
int osc_io_lru_reserve(const struct lu_env *env,
const struct cl_io_slice *ios,
loff_t pos, size_t bytes)
{
struct osc_object *osc = cl2osc(ios->cis_obj);
struct osc_io *oio = osc_env_io(env);
unsigned long npages = 0;
size_t page_offset;
ENTRY;
page_offset = pos & ~PAGE_MASK;
if (page_offset) {
++npages;
if (bytes > PAGE_SIZE - page_offset)
bytes -= (PAGE_SIZE - page_offset);
else
bytes = 0;
}
npages += (bytes + PAGE_SIZE - 1) >> PAGE_SHIFT;
oio->oi_lru_reserved = osc_lru_reserve(osc_cli(osc), npages);
RETURN(0);
}
EXPORT_SYMBOL(osc_io_lru_reserve);
static const struct cl_io_operations osc_io_ops = {
.op = {
[CIT_READ] = {
.cio_iter_init = osc_io_iter_init,
.cio_iter_fini = osc_io_rw_iter_fini,
.cio_start = osc_io_read_start,
.cio_fini = osc_io_fini
},
[CIT_WRITE] = {
.cio_iter_init = osc_io_iter_init,
.cio_iter_fini = osc_io_rw_iter_fini,
.cio_start = osc_io_write_start,
.cio_end = osc_io_end,
.cio_fini = osc_io_fini
},
[CIT_SETATTR] = {
.cio_iter_init = osc_io_iter_init,
.cio_iter_fini = osc_io_iter_fini,
.cio_start = osc_io_setattr_start,
.cio_end = osc_io_setattr_end
},
[CIT_DATA_VERSION] = {
.cio_start = osc_io_data_version_start,
.cio_end = osc_io_data_version_end,
},
[CIT_FAULT] = {
.cio_iter_init = osc_io_iter_init,
.cio_iter_fini = osc_io_iter_fini,
.cio_start = osc_io_fault_start,
.cio_end = osc_io_end,
.cio_fini = osc_io_fini
},
[CIT_FSYNC] = {
.cio_start = osc_io_fsync_start,
.cio_end = osc_io_fsync_end,
.cio_fini = osc_io_fini
},
[CIT_LADVISE] = {
.cio_start = osc_io_ladvise_start,
.cio_end = osc_io_ladvise_end,
.cio_fini = osc_io_fini
},
[CIT_LSEEK] = {
.cio_start = osc_io_lseek_start,
.cio_end = osc_io_lseek_end,
.cio_fini = osc_io_fini
},
[CIT_MISC] = {
.cio_fini = osc_io_fini
}
},
.cio_read_ahead_prep = osc_io_read_ahead_prep,
.cio_lru_reserve = osc_io_lru_reserve,
.cio_submit = osc_io_submit,
.cio_dio_submit = osc_dio_submit,
.cio_commit_async = osc_io_commit_async,
.cio_extent_release = osc_io_extent_release
};
/* Transfer operations. */
int osc_io_init(const struct lu_env *env,
struct cl_object *obj, struct cl_io *io)
{
struct osc_io *oio = osc_env_io(env);
struct osc_object *osc = cl2osc(obj);
struct obd_export *exp = osc_export(osc);
CL_IO_SLICE_CLEAN(oio, oi_cl);
cl_io_slice_add(io, &oio->oi_cl, obj, &osc_io_ops);
if (!exp_connect_unaligned_dio(exp))
cl_io_top(io)->ci_allow_unaligned_dio = false;
return 0;
}
