* Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2011, 2013, Intel Corporation.
+ * Copyright (c) 2011, 2014, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
return oio;
}
-static struct osc_page *osc_cl_page_osc(struct cl_page *page)
+static struct osc_page *osc_cl_page_osc(struct cl_page *page,
+ struct osc_object *osc)
{
- const struct cl_page_slice *slice;
+ const struct cl_page_slice *slice;
- slice = cl_page_at(page, &osc_device_type);
- LASSERT(slice != NULL);
+ if (osc != NULL)
+ slice = cl_object_page_slice(&osc->oo_cl, page);
+ else
+ slice = cl_page_at(page, &osc_device_type);
+ LASSERT(slice != NULL);
- return cl2osc_page(slice);
+ return cl2osc_page(slice);
}
const struct cl_io_slice *ios,
enum cl_req_type crt, struct cl_2queue *queue)
{
- struct cl_page *page;
- struct cl_page *tmp;
- struct client_obd *cli = NULL;
- struct osc_object *osc = NULL; /* to keep gcc happy */
- struct osc_page *opg;
- struct cl_io *io;
- CFS_LIST_HEAD (list);
+ struct cl_page *page;
+ struct cl_page *tmp;
+ struct client_obd *cli = NULL;
+ struct osc_object *osc = NULL; /* to keep gcc happy */
+ struct osc_page *opg;
+ struct cl_io *io;
+ struct list_head list = LIST_HEAD_INIT(list);
struct cl_page_list *qin = &queue->c2_qin;
struct cl_page_list *qout = &queue->c2_qout;
- int queued = 0;
+ unsigned int queued = 0;
int result = 0;
int cmd;
int brw_flags;
- int max_pages;
+ unsigned int max_pages;
LASSERT(qin->pl_nr > 0);
io = page->cp_owner;
LASSERT(io != NULL);
- opg = osc_cl_page_osc(page);
- oap = &opg->ops_oap;
+ opg = osc_cl_page_osc(page, osc);
+ oap = &opg->ops_oap;
LASSERT(osc == oap->oap_obj);
- if (!cfs_list_empty(&oap->oap_pending_item) ||
- !cfs_list_empty(&oap->oap_rpc_item)) {
+ 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;
continue;
}
- cl_page_list_move(qout, qin, page);
spin_lock(&oap->oap_lock);
oap->oap_async_flags = ASYNC_URGENT|ASYNC_READY;
oap->oap_async_flags |= ASYNC_COUNT_STABLE;
spin_unlock(&oap->oap_lock);
osc_page_submit(env, opg, crt, brw_flags);
- cfs_list_add_tail(&oap->oap_pending_item, &list);
+ 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);
+
if (++queued == max_pages) {
queued = 0;
result = osc_queue_sync_pages(env, osc, &list, cmd,
return qout->pl_nr > 0 ? 0 : result;
}
+/**
+ * This is called when a page is accessed within file in a way that creates
+ * new page, if one were missing (i.e., if there were a hole at that place in
+ * the file, or accessed page is beyond the current file size).
+ *
+ * Expand stripe KMS if necessary.
+ */
static void osc_page_touch_at(const struct lu_env *env,
- struct cl_object *obj, pgoff_t idx, unsigned to)
+ 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;
kms > loi->loi_kms ? "" : "not ", loi->loi_kms, kms,
loi->loi_lvb.lvb_size);
- valid = 0;
- 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_set(env, obj, attr, valid);
- cl_object_attr_unlock(obj);
+ attr->cat_mtime = attr->cat_ctime = LTIME_S(CFS_CURRENT_TIME);
+ 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);
}
-/**
- * This is called when a page is accessed within file in a way that creates
- * new page, if one were missing (i.e., if there were a hole at that place in
- * the file, or accessed page is beyond the current file size). Examples:
- * ->commit_write() and ->nopage() methods.
- *
- * Expand stripe KMS if necessary.
- */
-static void osc_page_touch(const struct lu_env *env,
- struct osc_page *opage, unsigned to)
+static 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)
{
- struct cl_page *page = opage->ops_cl.cpl_page;
- struct cl_object *obj = opage->ops_cl.cpl_obj;
+ 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;
+ int result = 0;
+ ENTRY;
- osc_page_touch_at(env, obj, page->cp_index, to);
-}
+ LASSERT(qin->pl_nr > 0);
-/**
- * Implements cl_io_operations::cio_prepare_write() method for osc layer.
- *
- * \retval -EIO transfer initiated against this osc will most likely fail
- * \retval 0 transfer initiated against this osc will most likely succeed.
- *
- * The reason for this check is to immediately return an error to the caller
- * in the case of a deactivated import. Note, that import can be deactivated
- * later, while pages, dirtied by this IO, are still in the cache, but this is
- * irrelevant, because that would still return an error to the application (if
- * it does fsync), but many applications don't do fsync because of performance
- * issues, and we wanted to return an -EIO at write time to notify the
- * application.
- */
-static int osc_io_prepare_write(const struct lu_env *env,
- const struct cl_io_slice *ios,
- const struct cl_page_slice *slice,
- unsigned from, unsigned to)
-{
- struct osc_device *dev = lu2osc_dev(slice->cpl_obj->co_lu.lo_dev);
- struct obd_import *imp = class_exp2cliimp(dev->od_exp);
- struct osc_io *oio = cl2osc_io(env, ios);
- int result = 0;
- ENTRY;
+ /* 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);
+ }
+ }
- /*
- * This implements OBD_BRW_CHECK logic from old client.
- */
+ while (qin->pl_nr > 0) {
+ struct osc_async_page *oap;
- if (imp == NULL || imp->imp_invalid)
- result = -EIO;
- if (result == 0 && oio->oi_lockless)
- /* this page contains `invalid' data, but who cares?
- * nobody can access the invalid data.
- * in osc_io_commit_write(), we're going to write exact
- * [from, to) bytes of this page to OST. -jay */
- cl_page_export(env, slice->cpl_page, 1);
+ page = cl_page_list_first(qin);
+ opg = osc_cl_page_osc(page, osc);
+ oap = &opg->ops_oap;
- RETURN(result);
-}
+ if (!list_empty(&oap->oap_rpc_item)) {
+ CDEBUG(D_CACHE, "Busy oap %p page %p for submit.\n",
+ oap, opg);
+ result = -EBUSY;
+ break;
+ }
-static int osc_io_commit_write(const struct lu_env *env,
- const struct cl_io_slice *ios,
- const struct cl_page_slice *slice,
- unsigned from, unsigned to)
-{
- struct osc_io *oio = cl2osc_io(env, ios);
- struct osc_page *opg = cl2osc_page(slice);
- struct osc_object *obj = cl2osc(opg->ops_cl.cpl_obj);
- struct osc_async_page *oap = &opg->ops_oap;
- ENTRY;
+ /* The page may be already in dirty cache. */
+ if (list_empty(&oap->oap_pending_item)) {
+ result = osc_page_cache_add(env, &opg->ops_cl, io);
+ if (result != 0)
+ break;
+ }
- LASSERT(to > 0);
- /*
- * XXX instead of calling osc_page_touch() here and in
- * osc_io_fault_start() it might be more logical to introduce
- * cl_page_touch() method, that generic cl_io_commit_write() and page
- * fault code calls.
- */
- osc_page_touch(env, cl2osc_page(slice), to);
- if (!client_is_remote(osc_export(obj)) &&
- cfs_capable(CFS_CAP_SYS_RESOURCE))
- oap->oap_brw_flags |= OBD_BRW_NOQUOTA;
+ osc_page_touch_at(env, osc2cl(osc), osc_index(opg),
+ page == last_page ? to : PAGE_SIZE);
+
+ cl_page_list_del(env, qin, page);
- if (oio->oi_lockless)
- /* see osc_io_prepare_write() for lockless io handling. */
- cl_page_clip(env, slice->cpl_page, from, to);
+ (*cb)(env, io, page);
+ /* Can't access page 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 != NULL) {
+ osc_extent_release(env, oio->oi_active);
+ oio->oi_active = NULL;
+ }
- RETURN(0);
+ CDEBUG(D_INFO, "%d %d\n", qin->pl_nr, result);
+ RETURN(result);
}
static int osc_io_rw_iter_init(const struct lu_env *env,
struct osc_object *osc = cl2osc(ios->cis_obj);
struct client_obd *cli = osc_cli(osc);
unsigned long c;
- unsigned int npages;
- unsigned int max_pages;
+ unsigned long npages;
+ unsigned long max_pages;
ENTRY;
if (cl_io_is_append(io))
if (npages > max_pages)
npages = max_pages;
- c = cfs_atomic_read(cli->cl_lru_left);
+ c = atomic_long_read(cli->cl_lru_left);
if (c < npages && osc_lru_reclaim(cli) > 0)
- c = cfs_atomic_read(cli->cl_lru_left);
+ c = atomic_long_read(cli->cl_lru_left);
while (c >= npages) {
- if (c == cfs_atomic_cmpxchg(cli->cl_lru_left, c, c - npages)) {
+ if (c == atomic_long_cmpxchg(cli->cl_lru_left, c, c - npages)) {
oio->oi_lru_reserved = npages;
break;
}
- c = cfs_atomic_read(cli->cl_lru_left);
+ c = atomic_long_read(cli->cl_lru_left);
}
RETURN(0);
struct client_obd *cli = osc_cli(osc);
if (oio->oi_lru_reserved > 0) {
- cfs_atomic_add(oio->oi_lru_reserved, cli->cl_lru_left);
+ atomic_long_add(oio->oi_lru_reserved, cli->cl_lru_left);
oio->oi_lru_reserved = 0;
}
+ oio->oi_write_osclock = NULL;
}
static int osc_io_fault_start(const struct lu_env *env,
- const struct cl_io_slice *ios)
+ const struct cl_io_slice *ios)
{
- struct cl_io *io;
- struct cl_fault_io *fio;
-
- ENTRY;
+ struct cl_io *io;
+ struct cl_fault_io *fio;
+ ENTRY;
- io = ios->cis_io;
- fio = &io->u.ci_fault;
- CDEBUG(D_INFO, "%lu %d %d\n",
- fio->ft_index, fio->ft_writable, fio->ft_nob);
- /*
- * 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_nob);
- RETURN(0);
+ io = ios->cis_io;
+ fio = &io->u.ci_fault;
+ CDEBUG(D_INFO, "%lu %d %zu\n",
+ fio->ft_index, fio->ft_writable, fio->ft_nob);
+ /*
+ * 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_nob);
+ RETURN(0);
}
static int osc_async_upcall(void *a, int rc)
return 0;
}
-#if defined(__KERNEL__)
/**
* Checks that there are no pages being written in the extent being truncated.
*/
oap = &ops->ops_oap;
if (oap->oap_cmd & OBD_BRW_WRITE &&
- !cfs_list_empty(&oap->oap_pending_item))
+ !list_empty(&oap->oap_pending_item))
CL_PAGE_DEBUG(D_ERROR, env, page, "exists " LPU64 "/%s.\n",
start, current->comm);
-#ifdef __linux__
- {
- struct page *vmpage = cl_page_vmpage(env, page);
- if (PageLocked(vmpage))
- CDEBUG(D_CACHE, "page %p index %lu locked for %d.\n",
- ops, page->cp_index,
- (oap->oap_cmd & OBD_BRW_RWMASK));
- }
-#endif
+ if (PageLocked(page->cp_vmpage))
+ CDEBUG(D_CACHE, "page %p index %lu locked for %d.\n",
+ ops, osc_index(ops), oap->oap_cmd & OBD_BRW_RWMASK);
return CLP_GANG_OKAY;
}
start + partial, CL_PAGE_EOF,
trunc_check_cb, (void *)&size);
}
-#else /* __KERNEL__ */
-static void osc_trunc_check(const struct lu_env *env, struct cl_io *io,
- struct osc_io *oio, __u64 size)
-{
- return;
-}
-#endif
static int osc_io_setattr_start(const struct lu_env *env,
const struct cl_io_slice *slice)
}
if (ia_valid & ATTR_CTIME_SET) {
attr->cat_ctime = lvb->lvb_ctime;
- cl_valid |= CAT_CTIME;
- }
- result = cl_object_attr_set(env, obj, attr, cl_valid);
- }
- cl_object_attr_unlock(obj);
- }
- memset(oa, 0, sizeof(*oa));
- if (result == 0) {
+ 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;
oa->o_mtime = attr->cat_mtime;
oa->o_atime = attr->cat_atime;
static int osc_io_read_start(const struct lu_env *env,
const struct cl_io_slice *slice)
{
- struct osc_io *oio = cl2osc_io(env, slice);
struct cl_object *obj = slice->cis_obj;
struct cl_attr *attr = &osc_env_info(env)->oti_attr;
int rc = 0;
ENTRY;
- if (oio->oi_lockless == 0 && !slice->cis_io->ci_noatime) {
+ if (!slice->cis_io->ci_noatime) {
cl_object_attr_lock(obj);
attr->cat_atime = LTIME_S(CFS_CURRENT_TIME);
- rc = cl_object_attr_set(env, obj, attr, CAT_ATIME);
+ rc = cl_object_attr_update(env, obj, attr, CAT_ATIME);
cl_object_attr_unlock(obj);
}
static int osc_io_write_start(const struct lu_env *env,
const struct cl_io_slice *slice)
{
- struct osc_io *oio = cl2osc_io(env, slice);
- struct cl_object *obj = slice->cis_obj;
- struct cl_attr *attr = &osc_env_info(env)->oti_attr;
- int result = 0;
- ENTRY;
-
- if (oio->oi_lockless == 0) {
- OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_DELAY_SETTIME, 1);
- cl_object_attr_lock(obj);
- result = cl_object_attr_get(env, obj, attr);
- if (result == 0) {
- attr->cat_mtime = attr->cat_ctime =
- LTIME_S(CFS_CURRENT_TIME);
- result = cl_object_attr_set(env, obj, attr,
- CAT_MTIME | CAT_CTIME);
- }
- cl_object_attr_unlock(obj);
- }
- RETURN(result);
+ struct cl_object *obj = slice->cis_obj;
+ struct cl_attr *attr = &osc_env_info(env)->oti_attr;
+ int rc = 0;
+ ENTRY;
+
+ OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_DELAY_SETTIME, 1);
+ cl_object_attr_lock(obj);
+ attr->cat_mtime = attr->cat_ctime = LTIME_S(CFS_CURRENT_TIME);
+ rc = cl_object_attr_update(env, obj, attr, CAT_MTIME | CAT_CTIME);
+ cl_object_attr_unlock(obj);
+
+ RETURN(rc);
}
static int osc_fsync_ost(const struct lu_env *env, struct osc_object *obj,
}
static const struct cl_io_operations osc_io_ops = {
- .op = {
- [CIT_READ] = {
- .cio_start = osc_io_read_start,
- .cio_fini = osc_io_fini
- },
- [CIT_WRITE] = {
+ .op = {
+ [CIT_READ] = {
+ .cio_start = osc_io_read_start,
+ .cio_fini = osc_io_fini
+ },
+ [CIT_WRITE] = {
.cio_iter_init = osc_io_rw_iter_init,
.cio_iter_fini = osc_io_rw_iter_fini,
- .cio_start = osc_io_write_start,
+ .cio_start = osc_io_write_start,
.cio_end = osc_io_end,
- .cio_fini = osc_io_fini
- },
- [CIT_SETATTR] = {
- .cio_start = osc_io_setattr_start,
- .cio_end = osc_io_setattr_end
- },
- [CIT_FAULT] = {
+ .cio_fini = osc_io_fini
+ },
+ [CIT_SETATTR] = {
+ .cio_start = osc_io_setattr_start,
+ .cio_end = osc_io_setattr_end
+ },
+ [CIT_FAULT] = {
.cio_start = osc_io_fault_start,
.cio_end = osc_io_end,
.cio_fini = osc_io_fini
.cio_end = osc_io_fsync_end,
.cio_fini = osc_io_fini
},
- [CIT_MISC] = {
- .cio_fini = osc_io_fini
- }
- },
- .req_op = {
- [CRT_READ] = {
- .cio_submit = osc_io_submit
- },
- [CRT_WRITE] = {
- .cio_submit = osc_io_submit
- }
- },
- .cio_prepare_write = osc_io_prepare_write,
- .cio_commit_write = osc_io_commit_write
+ [CIT_MISC] = {
+ .cio_fini = osc_io_fini
+ }
+ },
+ .cio_submit = osc_io_submit,
+ .cio_commit_async = osc_io_commit_async
};
/*****************************************************************************
struct lov_oinfo *oinfo;
struct cl_req *clerq;
struct cl_page *apage; /* _some_ page in @clerq */
- struct cl_lock *lock; /* _some_ lock protecting @apage */
- struct osc_lock *olck;
+ struct ldlm_lock *lock; /* _some_ lock protecting @apage */
struct osc_page *opg;
struct obdo *oa;
struct ost_lvb *lvb;
oa->o_valid |= OBD_MD_FLID;
}
if (flags & OBD_MD_FLHANDLE) {
- clerq = slice->crs_req;
- LASSERT(!cfs_list_empty(&clerq->crq_pages));
- apage = container_of(clerq->crq_pages.next,
- struct cl_page, cp_flight);
- opg = osc_cl_page_osc(apage);
- apage = opg->ops_cl.cpl_page; /* now apage is a sub-page */
- lock = cl_lock_at_page(env, apage->cp_obj, apage, NULL, 1, 1);
- if (lock == NULL) {
- struct cl_object_header *head;
- struct cl_lock *scan;
-
- head = cl_object_header(apage->cp_obj);
- cfs_list_for_each_entry(scan, &head->coh_locks,
- cll_linkage)
- CL_LOCK_DEBUG(D_ERROR, env, scan,
- "no cover page!\n");
- CL_PAGE_DEBUG(D_ERROR, env, apage,
- "dump uncover page!\n");
- libcfs_debug_dumpstack(NULL);
- LBUG();
- }
+ 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),
+ 1, 1);
+ if (lock == NULL && !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);
+
+ libcfs_debug_dumpstack(NULL);
+ LBUG();
+ }
- olck = osc_lock_at(lock);
- LASSERT(olck != NULL);
- LASSERT(ergo(opg->ops_srvlock, olck->ols_lock == NULL));
- /* check for lockless io. */
- if (olck->ols_lock != NULL) {
- oa->o_handle = olck->ols_lock->l_remote_handle;
- oa->o_valid |= OBD_MD_FLHANDLE;
- }
- cl_lock_put(env, lock);
- }
+ /* check for lockless io. */
+ if (lock != NULL) {
+ 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 = {
}
int osc_req_init(const struct lu_env *env, struct cl_device *dev,
- struct cl_req *req)
+ struct cl_req *req)
{
- struct osc_req *or;
- int result;
-
- OBD_SLAB_ALLOC_PTR_GFP(or, osc_req_kmem, __GFP_IO);
- if (or != NULL) {
- cl_req_slice_add(req, &or->or_cl, dev, &osc_req_ops);
- result = 0;
- } else
- result = -ENOMEM;
- return result;
+ struct osc_req *or;
+ int result;
+
+ OBD_SLAB_ALLOC_PTR_GFP(or, osc_req_kmem, GFP_NOFS);
+ if (or != NULL) {
+ cl_req_slice_add(req, &or->or_cl, dev, &osc_req_ops);
+ result = 0;
+ } else
+ result = -ENOMEM;
+ return result;
}
/** @} osc */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff