X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Fosc%2Fosc_io.c;h=d4eb1e31576799daf9610259c78ad4d0b0f9ecf0;hp=04b11db0b6bae5806560bfe39836f5cf38b0c201;hb=65e067d5d90270d4237a7271008561a4b432b94d;hpb=c5607338d96aa222319bebe58aa16785f463315e diff --git a/lustre/osc/osc_io.c b/lustre/osc/osc_io.c index 04b11db..d4eb1e3 100644 --- a/lustre/osc/osc_io.c +++ b/lustre/osc/osc_io.c @@ -1,6 +1,4 @@ -/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- - * vim:expandtab:shiftwidth=8:tabstop=8: - * +/* * GPL HEADER START * * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. @@ -26,8 +24,10 @@ * GPL HEADER END */ /* - * Copyright 2008 Sun Microsystems, Inc. All rights reserved. + * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved. * Use is subject to license terms. + * + * Copyright (c) 2011, 2014, Intel Corporation. */ /* * This file is part of Lustre, http://www.lustre.org/ @@ -36,14 +36,17 @@ * Implementation of cl_io for OSC layer. * * Author: Nikita Danilov + * Author: Jinshan Xiong */ -/** \addtogroup osc osc @{ */ - #define DEBUG_SUBSYSTEM S_OSC #include "osc_cl_internal.h" +/** \addtogroup osc + * @{ + */ + /***************************************************************************** * * Type conversions. @@ -64,14 +67,18 @@ 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) +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); } @@ -85,117 +92,69 @@ static void osc_io_fini(const struct lu_env *env, const struct cl_io_slice *io) { } -struct cl_page *osc_oap2cl_page(struct osc_async_page *oap) -{ - return container_of(oap, struct osc_page, ops_oap)->ops_cl.cpl_page; -} - -static void osc_io_unplug(const struct lu_env *env, struct osc_object *osc, - struct client_obd *cli) -{ - loi_list_maint(cli, osc->oo_oinfo); - osc_check_rpcs(env, cli); - client_obd_list_unlock(&cli->cl_loi_list_lock); -} - -/** - * How many pages osc_io_submit() queues before checking whether an RPC is - * ready. - */ -#define OSC_QUEUE_GRAIN (32) - /** * 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_base(). + * osc_set_async_flags(). */ static int osc_io_submit(const struct lu_env *env, const struct cl_io_slice *ios, - enum cl_req_type crt, struct cl_2queue *queue, - enum cl_req_priority priority) + enum cl_req_type crt, struct cl_2queue *queue) { - struct cl_page *page; - struct cl_page *tmp; - struct osc_object *osc0 = NULL; - struct client_obd *cli = NULL; - struct osc_object *osc = NULL; /* to keep gcc happy */ - struct osc_page *opg; - struct cl_io *io; - - struct cl_page_list *qin = &queue->c2_qin; - struct cl_page_list *qout = &queue->c2_qout; - int queued = 0; - int result = 0; + 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); - LASSERT(qin->pl_nr > 0); + struct cl_page_list *qin = &queue->c2_qin; + struct cl_page_list *qout = &queue->c2_qout; + unsigned int queued = 0; + int result = 0; + int cmd; + int brw_flags; + unsigned int max_pages; + + LASSERT(qin->pl_nr > 0); + + CDEBUG(D_CACHE, "%d %d\n", qin->pl_nr, crt); + + osc = cl2osc(ios->cis_obj); + cli = osc_cli(osc); + max_pages = cli->cl_max_pages_per_rpc; + + cmd = crt == CRT_WRITE ? OBD_BRW_WRITE : OBD_BRW_READ; + brw_flags = osc_io_srvlock(cl2osc_io(env, ios)) ? OBD_BRW_SRVLOCK : 0; - CDEBUG(D_INFO, "%i %i\n", qin->pl_nr, crt); /* * 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; - struct obd_export *exp; /* Top level IO. */ io = page->cp_owner; LASSERT(io != NULL); - opg = osc_cl_page_osc(page); - oap = &opg->ops_oap; - osc = cl2osc(opg->ops_cl.cpl_obj); - exp = osc_export(osc); + opg = osc_cl_page_osc(page, osc); + oap = &opg->ops_oap; + LASSERT(osc == oap->oap_obj); - if (priority > CRP_NORMAL) { - spin_lock(&oap->oap_lock); - oap->oap_async_flags |= ASYNC_HP; - spin_unlock(&oap->oap_lock); - } - /* - * This can be checked without cli->cl_loi_list_lock, because - * ->oap_*_item are always manipulated when the page is owned. - */ - if (!list_empty(&oap->oap_urgent_item) || - !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; break; } - if (osc0 == NULL) { /* first iteration */ - cli = &exp->exp_obd->u.cli; - osc0 = osc; - } else /* check that all pages are against the same object - * (for now) */ - LASSERT(osc == osc0); - if (queued++ == 0) - client_obd_list_lock(&cli->cl_loi_list_lock); result = cl_page_prep(env, io, page, crt); - if (result == 0) { - cl_page_list_move(qout, qin, page); - if (list_empty(&oap->oap_pending_item)) { - osc_io_submit_page(env, cl2osc_io(env, ios), - opg, crt); - } else { - result = osc_set_async_flags_base(cli, - osc->oo_oinfo, - oap, - OSC_FLAGS); - /* - * bug 18881: we can't just break out here when - * error occurrs after cl_page_prep has been - * called against the page. The correct - * way is to call page's completion routine, - * as in osc_oap_interrupted. For simplicity, - * we just force osc_set_async_flags_base() to - * not return error. - */ - LASSERT(result == 0); - } - opg->ops_submit_time = cfs_time_current(); - } else { + if (result != 0) { LASSERT(result < 0); if (result != -EALREADY) break; @@ -205,44 +164,47 @@ static int osc_io_submit(const struct lu_env *env, * is not dirty. */ result = 0; + continue; } - /* - * Don't keep client_obd_list_lock() for too long. - * - * XXX client_obd_list lock has to be unlocked periodically to - * avoid soft-lockups that tend to happen otherwise (see bug - * 16651). On the other hand, osc_io_submit_page() queues a - * page with ASYNC_URGENT flag and so all pages queued up - * until this point are sent out immediately by - * osc_io_unplug() resulting in sub-optimal RPCs (sub-optimal - * RPCs only happen during `warm up' phase when less than - * cl_max_rpcs_in_flight RPCs are in flight). To balance these - * conflicting requirements, one might unplug once enough - * pages to form a large RPC were queued (i.e., use - * cli->cl_max_pages_per_rpc as OSC_QUEUE_GRAIN, see - * lop_makes_rpc()), or ignore soft-lockup issue altogether. - * - * XXX lock_need_resched() should be used here, but it is not - * available in the older of supported kernels. - */ - if (queued > OSC_QUEUE_GRAIN || cfs_need_resched()) { - queued = 0; - osc_io_unplug(env, osc, cli); - cfs_cond_resched(); - } - } - - LASSERT(ergo(result == 0, cli != NULL)); - LASSERT(ergo(result == 0, osc == osc0)); - if (queued > 0) - osc_io_unplug(env, osc, cli); - CDEBUG(D_INFO, "%i/%i %i\n", qin->pl_nr, qout->pl_nr, result); - return qout->pl_nr > 0 ? 0 : result; + 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); + 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, + brw_flags); + if (result < 0) + break; + } + } + + if (queued > 0) + result = osc_queue_sync_pages(env, osc, &list, cmd, brw_flags); + + CDEBUG(D_INFO, "%d/%d %d\n", qin->pl_nr, qout->pl_nr, result); + 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; @@ -264,182 +226,219 @@ static void osc_page_touch_at(const struct lu_env *env, 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; - - osc_page_touch_at(env, obj, page->cp_index, to); + 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; + + 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); + } + } + + 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, &opg->ops_cl, io); + 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); + + (*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; + } + + CDEBUG(D_INFO, "%d %d\n", qin->pl_nr, result); + RETURN(result); } -/** - * 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) +static int osc_io_rw_iter_init(const struct lu_env *env, + const struct cl_io_slice *ios) { - struct osc_device *dev = lu2osc_dev(slice->cpl_obj->co_lu.lo_dev); - struct obd_import *imp = class_exp2cliimp(dev->od_exp); - - ENTRY; - - /* - * This implements OBD_BRW_CHECK logic from old client. - */ - - RETURN(imp == NULL || imp->imp_invalid ? -EIO : 0); + struct cl_io *io = ios->cis_io; + struct osc_io *oio = osc_env_io(env); + struct osc_object *osc = cl2osc(ios->cis_obj); + struct client_obd *cli = osc_cli(osc); + unsigned long c; + unsigned long npages; + unsigned long max_pages; + ENTRY; + + if (cl_io_is_append(io)) + RETURN(0); + + npages = io->u.ci_rw.crw_count >> PAGE_CACHE_SHIFT; + if (io->u.ci_rw.crw_pos & ~CFS_PAGE_MASK) + ++npages; + + max_pages = cli->cl_max_pages_per_rpc * cli->cl_max_rpcs_in_flight; + if (npages > max_pages) + npages = max_pages; + + c = atomic_long_read(cli->cl_lru_left); + if (c < npages && osc_lru_reclaim(cli) > 0) + c = atomic_long_read(cli->cl_lru_left); + while (c >= npages) { + if (c == atomic_long_cmpxchg(cli->cl_lru_left, c, c - npages)) { + oio->oi_lru_reserved = npages; + break; + } + c = atomic_long_read(cli->cl_lru_left); + } + + RETURN(0); } -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) +static void osc_io_rw_iter_fini(const struct lu_env *env, + const struct cl_io_slice *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; - - 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; - - RETURN(0); + struct osc_io *oio = osc_env_io(env); + struct osc_object *osc = cl2osc(ios->cis_obj); + struct client_obd *cli = osc_cli(osc); + + if (oio->oi_lru_reserved > 0) { + 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; - - io = ios->cis_io; - fio = &io->u.ci_fault; - CDEBUG(D_INFO, "%lu %i %i\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); + 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_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_punch_upcall(void *a, int rc) +static int osc_async_upcall(void *a, int rc) { - struct osc_punch_cbargs *args = a; + struct osc_async_cbargs *args = a; args->opc_rc = rc; - complete(&args->opc_sync); + complete(&args->opc_sync); return 0; } -#ifdef __KERNEL__ /** * Checks that there are no pages being written in the extent being truncated. */ +static int trunc_check_cb(const struct lu_env *env, struct cl_io *io, + struct osc_page *ops , void *cbdata) +{ + 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 " LPU64 "/%s.\n", + start, current->comm); + + 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; +} + static void osc_trunc_check(const struct lu_env *env, struct cl_io *io, - struct osc_io *oio, size_t size) + struct osc_io *oio, __u64 size) { - struct osc_page *cp; - struct osc_object *obj; - struct cl_object *clob; - struct cl_page *page; - struct cl_page_list *list; - int partial; - pgoff_t start; + struct cl_object *clob; + int partial; + pgoff_t start; clob = oio->oi_cl.cis_obj; - obj = cl2osc(clob); start = cl_index(clob, size); partial = cl_offset(clob, start) < size; - list = &osc_env_info(env)->oti_plist; /* * Complain if there are pages in the truncated region. - * - * XXX this is quite expensive check. */ - cl_page_list_init(list); - cl_page_gang_lookup(env, clob, io, start + partial, CL_PAGE_EOF, list, 0); - - cl_page_list_for_each(page, list) - CL_PAGE_DEBUG(D_ERROR, env, page, "exists %lu\n", start); - - cl_page_list_disown(env, io, list); - cl_page_list_fini(env, list); - - spin_lock(&obj->oo_seatbelt); - list_for_each_entry(cp, &obj->oo_inflight[CRT_WRITE], ops_inflight) { - page = cp->ops_cl.cpl_page; - if (page->cp_index >= start + partial) { - cfs_task_t *submitter; - - submitter = cp->ops_submitter; - /* - * XXX Linux specific debugging stuff. - */ - CL_PAGE_DEBUG(D_ERROR, env, page, "%s/%i %lu\n", - submitter->comm, submitter->pid, start); - libcfs_debug_dumpstack(submitter); - } - } - spin_unlock(&obj->oo_seatbelt); + osc_page_gang_lookup(env, io, cl2osc(clob), + start + partial, CL_PAGE_EOF, + trunc_check_cb, (void *)&size); } -#else /* __KERNEL__ */ -# define osc_trunc_check(env, io, oio, size) do {;} while (0) -#endif -static int osc_io_trunc_start(const struct lu_env *env, - const struct cl_io_slice *slice) +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); @@ -447,134 +446,290 @@ static int osc_io_trunc_start(const struct lu_env *env, 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_punch_cbargs *cbargs = &oio->oi_punch_cbarg; - struct obd_capa *capa; - loff_t size = io->u.ci_truncate.tr_size; - int result = 0; - - - memset(oa, 0, sizeof(*oa)); - - osc_trunc_check(env, io, oio, size); - - if (oio->oi_lockless == 0) { - cl_object_attr_lock(obj); - result = cl_object_attr_get(env, obj, attr); - if (result == 0) { - attr->cat_size = attr->cat_kms = size; - result = cl_object_attr_set(env, obj, attr, - CAT_SIZE|CAT_KMS); + struct osc_async_cbargs *cbargs = &oio->oi_cbarg; + __u64 size = io->u.ci_setattr.sa_attr.lvb_size; + unsigned int ia_valid = io->u.ci_setattr.sa_valid; + int result = 0; + struct obd_info oinfo = { { { 0 } } }; + + /* truncate cache dirty pages first */ + if (cl_io_is_trunc(io)) + result = osc_cache_truncate_start(env, oio, cl2osc(obj), size); + + 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; + unsigned int cl_valid = 0; + + if (ia_valid & ATTR_SIZE) { + attr->cat_size = attr->cat_kms = size; + cl_valid = (CAT_SIZE | CAT_KMS); + } + if (ia_valid & ATTR_MTIME_SET) { + attr->cat_mtime = lvb->lvb_mtime; + cl_valid |= CAT_MTIME; + } + if (ia_valid & ATTR_ATIME_SET) { + attr->cat_atime = lvb->lvb_atime; + cl_valid |= CAT_ATIME; + } + if (ia_valid & 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; + oa->o_mtime = attr->cat_mtime; + oa->o_atime = attr->cat_atime; + oa->o_ctime = attr->cat_ctime; + oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP | OBD_MD_FLATIME | + OBD_MD_FLCTIME | OBD_MD_FLMTIME; + if (ia_valid & ATTR_SIZE) { + oa->o_size = size; + oa->o_blocks = OBD_OBJECT_EOF; + oa->o_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS; + + if (oio->oi_lockless) { + oa->o_flags = OBD_FL_SRVLOCK; + oa->o_valid |= OBD_MD_FLFLAGS; + } + } else { + LASSERT(oio->oi_lockless == 0); } - cl_object_attr_unlock(obj); - } - if (result == 0) { - oa->o_id = loi->loi_id; - oa->o_gr = loi->loi_gr; - oa->o_mtime = attr->cat_mtime; - oa->o_atime = attr->cat_atime; - oa->o_ctime = attr->cat_ctime; - oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP | OBD_MD_FLATIME | - OBD_MD_FLCTIME | OBD_MD_FLMTIME; - if (oio->oi_lockless) { - oa->o_flags = OBD_FL_TRUNCLOCK; - oa->o_valid |= OBD_MD_FLFLAGS; - } - oa->o_size = size; - oa->o_blocks = OBD_OBJECT_EOF; - oa->o_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS; - - capa = io->u.ci_truncate.tr_capa; - init_completion(&cbargs->opc_sync); - result = osc_punch_base(osc_export(cl2osc(obj)), oa, capa, - osc_punch_upcall, cbargs, PTLRPCD_SET); + oinfo.oi_oa = oa; + oinfo.oi_capa = io->u.ci_setattr.sa_capa; + init_completion(&cbargs->opc_sync); + + if (ia_valid & ATTR_SIZE) + result = osc_punch_base(osc_export(cl2osc(obj)), + &oinfo, osc_async_upcall, + cbargs, PTLRPCD_SET); + else + result = osc_setattr_async_base(osc_export(cl2osc(obj)), + &oinfo, NULL, + osc_async_upcall, + cbargs, PTLRPCD_SET); + cbargs->opc_rpc_sent = result == 0; } return result; } -static void osc_io_trunc_end(const struct lu_env *env, - const struct cl_io_slice *slice) +static 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 osc_punch_cbargs *cbargs = &oio->oi_punch_cbarg; - struct obdo *oa = &oio->oi_oa; - int result; - - wait_for_completion(&cbargs->opc_sync); + 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; + int result = 0; - result = io->ci_result = cbargs->opc_rc; + if (cbargs->opc_rpc_sent) { + wait_for_completion(&cbargs->opc_sync); + result = io->ci_result = cbargs->opc_rc; + } if (result == 0) { - struct cl_object *obj = slice->cis_obj; - if (oio->oi_lockless == 0) { - struct cl_attr *attr = &osc_env_info(env)->oti_attr; - int valid = 0; - - /* Update kms & size */ - if (oa->o_valid & OBD_MD_FLSIZE) { - attr->cat_size = oa->o_size; - attr->cat_kms = oa->o_size; - valid |= CAT_KMS|CAT_SIZE; - } - if (oa->o_valid & OBD_MD_FLBLOCKS) { - attr->cat_blocks = oa->o_blocks; - valid |= CAT_BLOCKS; - } - if (oa->o_valid & OBD_MD_FLMTIME) { - attr->cat_mtime = oa->o_mtime; - valid |= CAT_MTIME; - } - if (oa->o_valid & OBD_MD_FLCTIME) { - attr->cat_ctime = oa->o_ctime; - valid |= CAT_CTIME; - } - if (oa->o_valid & OBD_MD_FLATIME) { - attr->cat_atime = oa->o_atime; - valid |= CAT_ATIME; - } - cl_object_attr_lock(obj); - result = cl_object_attr_set(env, obj, attr, valid); - cl_object_attr_unlock(obj); - } else { /* lockless truncate */ + if (oio->oi_lockless) { + /* lockless truncate */ struct osc_device *osd = lu2osc_dev(obj->co_lu.lo_dev); + + LASSERT(cl_io_is_trunc(io)); /* XXX: Need a lock. */ osd->od_stats.os_lockless_truncates++; } } - /* return result; */ + if (cl_io_is_trunc(io)) { + __u64 size = io->u.ci_setattr.sa_attr.lvb_size; + osc_trunc_check(env, io, oio, size); + if (oio->oi_trunc != NULL) { + osc_cache_truncate_end(env, oio, cl2osc(obj)); + oio->oi_trunc = NULL; + } + } +} + +static 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 = LTIME_S(CFS_CURRENT_TIME); + rc = cl_object_attr_update(env, obj, attr, CAT_ATIME); + cl_object_attr_unlock(obj); + } + + RETURN(rc); +} + +static 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; + + 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, + struct cl_fsync_io *fio) +{ + struct osc_io *oio = osc_env_io(env); + struct obdo *oa = &oio->oi_oa; + struct obd_info *oinfo = &oio->oi_info; + 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; + + /* 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); + + memset(oinfo, 0, sizeof(*oinfo)); + oinfo->oi_oa = oa; + oinfo->oi_capa = fio->fi_capa; + init_completion(&cbargs->opc_sync); + + rc = osc_sync_base(osc_export(obj), oinfo, osc_async_upcall, cbargs, + PTLRPCD_SET); + RETURN(rc); +} + +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 = cl_index(obj, fio->fi_start); + pgoff_t end = cl_index(obj, fio->fi_end); + int result = 0; + ENTRY; + + 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); + if (result > 0) { + fio->fi_nr_written += result; + result = 0; + } + if (fio->fi_mode == CL_FSYNC_ALL) { + 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. */ + rc = osc_cache_wait_range(env, osc, start, end); + if (result == 0) + result = rc; + rc = osc_fsync_ost(env, osc, fio); + if (result == 0) + result = rc; + } + + RETURN(result); +} + +static 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; + pgoff_t start = cl_index(obj, fio->fi_start); + pgoff_t end = cl_index(obj, fio->fi_end); + int result = 0; + + if (fio->fi_mode == CL_FSYNC_LOCAL) { + result = osc_cache_wait_range(env, cl2osc(obj), start, end); + } else if (fio->fi_mode == CL_FSYNC_ALL) { + struct osc_io *oio = cl2osc_io(env, slice); + struct osc_async_cbargs *cbargs = &oio->oi_cbarg; + + wait_for_completion(&cbargs->opc_sync); + if (result == 0) + result = cbargs->opc_rc; + } + slice->cis_io->ci_result = result; +} + +static 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); + oio->oi_active = NULL; + } } static const struct cl_io_operations osc_io_ops = { - .op = { - [CIT_READ] = { - .cio_fini = osc_io_fini - }, - [CIT_WRITE] = { - .cio_fini = osc_io_fini - }, - [CIT_TRUNC] = { - .cio_start = osc_io_trunc_start, - .cio_end = osc_io_trunc_end - }, - [CIT_FAULT] = { - .cio_fini = osc_io_fini, - .cio_start = osc_io_fault_start - }, - [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 + .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_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_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_MISC] = { + .cio_fini = osc_io_fini + } + }, + .cio_submit = osc_io_submit, + .cio_commit_async = osc_io_commit_async }; /***************************************************************************** @@ -600,50 +755,78 @@ static void osc_req_completion(const struct lu_env *env, /** * Implementation of struct cl_req_operations::cro_attr_set() for osc - * layer. osc is responsible for struct obdo::o_id and struct obdo::o_gr + * 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, obd_valid flags) + const struct cl_req_slice *slice, + const struct cl_object *obj, + struct cl_req_attr *attr, obd_valid flags) { - 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 osc_page *opg; - struct obdo *oa; - - oa = attr->cra_oa; - oinfo = cl2osc(obj)->oo_oinfo; - if (flags & OBD_MD_FLID) { - oa->o_id = oinfo->loi_id; - oa->o_valid |= OBD_MD_FLID; - } - if (flags & OBD_MD_FLGROUP) { - oa->o_gr = oinfo->loi_gr; - oa->o_valid |= OBD_MD_FLGROUP; - } - 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); - 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); - LASSERT(lock != NULL); - olck = osc_lock_at(lock); - LASSERT(olck != 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); - } + 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), + 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(); + } + + /* 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 = { @@ -664,18 +847,18 @@ int osc_io_init(const struct lu_env *env, } 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, CFS_ALLOC_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 */