/* * 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.sun.com/software/products/lustre/docs/GPLv2.pdf * * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * * GPL HEADER END */ /* * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. * Use is subject to license terms. * * Copyright (c) 2011, 2012, Whamcloud, Inc. */ /* * This file is part of Lustre, http://www.lustre.org/ * Lustre is a trademark of Sun Microsystems, Inc. * * lustre/obdfilter/filter_io_26.c * * Author: Peter Braam * Author: Andreas Dilger * Author: Phil Schwan */ #include #include // XXX kill me soon #include #include #define DEBUG_SUBSYSTEM S_FILTER #include #include #include #include "filter_internal.h" /* 512byte block min */ #define MAX_BLOCKS_PER_PAGE (CFS_PAGE_SIZE / 512) static void record_start_io(struct filter_iobuf *iobuf, int rw, int size, struct obd_export *exp) { struct filter_obd *filter = iobuf->dr_filter; cfs_atomic_inc(&iobuf->dr_numreqs); if (rw == OBD_BRW_READ) { cfs_atomic_inc(&filter->fo_r_in_flight); lprocfs_oh_tally(&filter->fo_filter_stats.hist[BRW_R_RPC_HIST], cfs_atomic_read(&filter->fo_r_in_flight)); lprocfs_oh_tally_log2(&filter-> fo_filter_stats.hist[BRW_R_DISK_IOSIZE], size); if (exp->exp_nid_stats && exp->exp_nid_stats->nid_brw_stats) { lprocfs_oh_tally(&exp->exp_nid_stats->nid_brw_stats-> hist[BRW_R_RPC_HIST], cfs_atomic_read(&filter-> \ fo_r_in_flight)); lprocfs_oh_tally_log2(&exp->exp_nid_stats-> nid_brw_stats->hist[BRW_R_DISK_IOSIZE], size); } } else { cfs_atomic_inc(&filter->fo_w_in_flight); lprocfs_oh_tally(&filter->fo_filter_stats.hist[BRW_W_RPC_HIST], cfs_atomic_read(&filter->fo_w_in_flight)); lprocfs_oh_tally_log2(&filter-> fo_filter_stats.hist[BRW_W_DISK_IOSIZE], size); if (exp->exp_nid_stats && exp->exp_nid_stats->nid_brw_stats) { lprocfs_oh_tally(&exp->exp_nid_stats->nid_brw_stats-> hist[BRW_W_RPC_HIST], cfs_atomic_read(&filter-> \ fo_w_in_flight)); lprocfs_oh_tally_log2(&exp->exp_nid_stats-> nid_brw_stats->hist[BRW_W_DISK_IOSIZE], size); } } } static void record_finish_io(struct filter_iobuf *iobuf, int rw, int rc) { struct filter_obd *filter = iobuf->dr_filter; /* CAVEAT EMPTOR: possibly in IRQ context * DO NOT record procfs stats here!!! */ if (rw == OBD_BRW_READ) cfs_atomic_dec(&filter->fo_r_in_flight); else cfs_atomic_dec(&filter->fo_w_in_flight); if (cfs_atomic_dec_and_test(&iobuf->dr_numreqs)) cfs_waitq_signal(&iobuf->dr_wait); } #ifdef HAVE_BIO_ENDIO_2ARG #define DIO_RETURN(a) static void dio_complete_routine(struct bio *bio, int error) #else #define DIO_RETURN(a) return(a) static int dio_complete_routine(struct bio *bio, unsigned int done, int error) #endif { struct filter_iobuf *iobuf = bio->bi_private; struct bio_vec *bvl; int i; /* CAVEAT EMPTOR: possibly in IRQ context * DO NOT record procfs stats here!!! */ #ifdef HAVE_BIO_ENDIO_2ARG /* The "bi_size" check was needed for kernels < 2.6.24 in order to * handle the case where a SCSI request error caused this callback * to be called before all of the biovecs had been processed. * Without this check the server thread will hang. In newer kernels * the bio_end_io routine is never called for partial completions, * so this check is no longer needed. */ if (bio->bi_size) /* Not complete */ DIO_RETURN(1); #endif if (unlikely(iobuf == NULL)) { CERROR("***** bio->bi_private is NULL! This should never " "happen. Normally, I would crash here, but instead I " "will dump the bio contents to the console. Please " "report this to , along " "with any interesting messages leading up to this point " "(like SCSI errors, perhaps). Because bi_private is " "NULL, I can't wake up the thread that initiated this " "IO - you will probably have to reboot this node.\n"); CERROR("bi_next: %p, bi_flags: %lx, bi_rw: %lu, bi_vcnt: %d, " "bi_idx: %d, bi->size: %d, bi_end_io: %p, bi_cnt: %d, " "bi_private: %p\n", bio->bi_next, bio->bi_flags, bio->bi_rw, bio->bi_vcnt, bio->bi_idx, bio->bi_size, bio->bi_end_io, cfs_atomic_read(&bio->bi_cnt), bio->bi_private); DIO_RETURN(0); } /* the check is outside of the cycle for performance reason -bzzz */ if (!cfs_test_bit(BIO_RW, &bio->bi_rw)) { bio_for_each_segment(bvl, bio, i) { if (likely(error == 0)) SetPageUptodate(bvl->bv_page); LASSERT(PageLocked(bvl->bv_page)); ClearPageConstant(bvl->bv_page); } record_finish_io(iobuf, OBD_BRW_READ, error); } else { if (mapping_cap_page_constant_write(iobuf->dr_pages[0]->mapping)){ bio_for_each_segment(bvl, bio, i) { ClearPageConstant(bvl->bv_page); } } record_finish_io(iobuf, OBD_BRW_WRITE, error); } /* any real error is good enough -bzzz */ if (error != 0 && iobuf->dr_error == 0) iobuf->dr_error = error; /* Completed bios used to be chained off iobuf->dr_bios and freed in * filter_clear_dreq(). It was then possible to exhaust the biovec-256 * mempool when serious on-disk fragmentation was encountered, * deadlocking the OST. The bios are now released as soon as complete * so the pool cannot be exhausted while IOs are competing. bug 10076 */ bio_put(bio); DIO_RETURN(0); } static int can_be_merged(struct bio *bio, sector_t sector) { unsigned int size; if (!bio) return 0; size = bio->bi_size >> 9; return bio->bi_sector + size == sector ? 1 : 0; } struct filter_iobuf *filter_alloc_iobuf(struct filter_obd *filter, int rw, int num_pages) { struct filter_iobuf *iobuf; LASSERTF(rw == OBD_BRW_WRITE || rw == OBD_BRW_READ, "%x\n", rw); OBD_ALLOC(iobuf, sizeof(*iobuf)); if (iobuf == NULL) goto failed_0; OBD_ALLOC(iobuf->dr_pages, num_pages * sizeof(*iobuf->dr_pages)); if (iobuf->dr_pages == NULL) goto failed_1; OBD_ALLOC(iobuf->dr_blocks, MAX_BLOCKS_PER_PAGE * num_pages * sizeof(*iobuf->dr_blocks)); if (iobuf->dr_blocks == NULL) goto failed_2; CFS_INIT_HLIST_NODE(&iobuf->dr_hlist); iobuf->dr_filter = filter; cfs_waitq_init(&iobuf->dr_wait); cfs_atomic_set(&iobuf->dr_numreqs, 0); iobuf->dr_max_pages = num_pages; iobuf->dr_npages = 0; iobuf->dr_error = 0; RETURN(iobuf); failed_2: OBD_FREE(iobuf->dr_pages, num_pages * sizeof(*iobuf->dr_pages)); failed_1: OBD_FREE(iobuf, sizeof(*iobuf)); failed_0: RETURN(ERR_PTR(-ENOMEM)); } static void filter_clear_iobuf(struct filter_iobuf *iobuf) { iobuf->dr_npages = 0; iobuf->dr_error = 0; cfs_atomic_set(&iobuf->dr_numreqs, 0); } void filter_free_iobuf(struct filter_iobuf *iobuf) { int num_pages = iobuf->dr_max_pages; filter_clear_iobuf(iobuf); LASSERT(cfs_hlist_unhashed(&iobuf->dr_hlist)); OBD_FREE(iobuf->dr_blocks, MAX_BLOCKS_PER_PAGE * num_pages * sizeof(*iobuf->dr_blocks)); OBD_FREE(iobuf->dr_pages, num_pages * sizeof(*iobuf->dr_pages)); OBD_FREE_PTR(iobuf); } void filter_iobuf_put(struct filter_obd *filter, struct filter_iobuf *iobuf, struct obd_trans_info *oti) { int thread_id = (oti && oti->oti_thread) ? oti->oti_thread->t_id : -1; if (unlikely(thread_id < 0)) { filter_free_iobuf(iobuf); return; } filter_clear_iobuf(iobuf); } int filter_iobuf_add_page(struct obd_device *obd, struct filter_iobuf *iobuf, struct inode *inode, struct page *page) { LASSERT(iobuf->dr_npages < iobuf->dr_max_pages); iobuf->dr_pages[iobuf->dr_npages++] = page; return 0; } int filter_do_bio(struct obd_export *exp, struct inode *inode, struct filter_iobuf *iobuf, int rw) { struct obd_device *obd = exp->exp_obd; int blocks_per_page = CFS_PAGE_SIZE >> inode->i_blkbits; struct page **pages = iobuf->dr_pages; int npages = iobuf->dr_npages; unsigned long *blocks = iobuf->dr_blocks; int total_blocks = npages * blocks_per_page; int sector_bits = inode->i_sb->s_blocksize_bits - 9; unsigned int blocksize = inode->i_sb->s_blocksize; struct bio *bio = NULL; int frags = 0; unsigned long start_time = jiffies; struct page *page; unsigned int page_offset; sector_t sector; int nblocks; int block_idx; int page_idx; int i; int rc = 0; ENTRY; LASSERT(iobuf->dr_npages == npages); LASSERT(total_blocks <= OBDFILTER_CREATED_SCRATCHPAD_ENTRIES); for (page_idx = 0, block_idx = 0; page_idx < npages; page_idx++, block_idx += blocks_per_page) { page = pages[page_idx]; LASSERT (block_idx + blocks_per_page <= total_blocks); for (i = 0, page_offset = 0; i < blocks_per_page; i += nblocks, page_offset += blocksize * nblocks) { nblocks = 1; if (blocks[block_idx + i] == 0) { /* hole */ LASSERT(rw == OBD_BRW_READ); memset(kmap(page) + page_offset, 0, blocksize); kunmap(page); continue; } sector = (sector_t)blocks[block_idx + i] << sector_bits; /* Additional contiguous file blocks? */ while (i + nblocks < blocks_per_page && (sector + (nblocks << sector_bits)) == ((sector_t)blocks[block_idx + i + nblocks] << sector_bits)) nblocks++; /* I only set the page to be constant only if it * is mapped to a contiguous underlying disk block(s). * It will then make sure the corresponding device * cache of raid5 will be overwritten by this page. * - jay */ if ((rw == OBD_BRW_WRITE) && (nblocks == blocks_per_page) && mapping_cap_page_constant_write(inode->i_mapping)) SetPageConstant(page); if (bio != NULL && can_be_merged(bio, sector) && bio_add_page(bio, page, blocksize * nblocks, page_offset) != 0) continue; /* added this frag OK */ if (bio != NULL) { struct request_queue *q = bdev_get_queue(bio->bi_bdev); /* Dang! I have to fragment this I/O */ CDEBUG(D_INODE, "bio++ sz %d vcnt %d(%d) " "sectors %d(%d) psg %d(%d) hsg %d(%d) " "sector %llu next %llu\n", bio->bi_size, bio->bi_vcnt, bio->bi_max_vecs, bio->bi_size >> 9, queue_max_sectors(q), bio_phys_segments(q, bio), queue_max_phys_segments(q), bio_hw_segments(q, bio), queue_max_hw_segments(q), (unsigned long long)bio->bi_sector, (unsigned long long)sector); record_start_io(iobuf, rw, bio->bi_size, exp); rc = fsfilt_send_bio(rw, obd, inode, bio); if (rc < 0) { CERROR("Can't send bio: %d\n", rc); record_finish_io(iobuf, rw, rc); goto out; } frags++; } /* allocate new bio, limited by max BIO size, b=9945 */ bio = bio_alloc(GFP_NOIO, min(BIO_MAX_PAGES, (npages - page_idx) * blocks_per_page)); if (bio == NULL) { CERROR("Can't allocate bio %u*%u = %u pages\n", (npages - page_idx), blocks_per_page, (npages - page_idx) * blocks_per_page); rc = -ENOMEM; goto out; } bio->bi_bdev = inode->i_sb->s_bdev; bio->bi_sector = sector; bio->bi_end_io = dio_complete_routine; bio->bi_private = iobuf; rc = bio_add_page(bio, page, blocksize * nblocks, page_offset); LASSERT (rc != 0); } } if (bio != NULL) { record_start_io(iobuf, rw, bio->bi_size, exp); rc = fsfilt_send_bio(rw, obd, inode, bio); if (rc >= 0) { frags++; rc = 0; } else { CERROR("Can't send bio: %d\n", rc); record_finish_io(iobuf, rw, rc); } } out: cfs_wait_event(iobuf->dr_wait, cfs_atomic_read(&iobuf->dr_numreqs) == 0); if (rw == OBD_BRW_READ) { lprocfs_oh_tally(&obd->u.filter.fo_filter_stats. hist[BRW_R_DIO_FRAGS], frags); lprocfs_oh_tally_log2(&obd->u.filter. fo_filter_stats.hist[BRW_R_IO_TIME], jiffies - start_time); if (exp->exp_nid_stats && exp->exp_nid_stats->nid_brw_stats) { lprocfs_oh_tally(&exp->exp_nid_stats->nid_brw_stats-> hist[BRW_R_DIO_FRAGS], frags); lprocfs_oh_tally_log2(&exp->exp_nid_stats-> nid_brw_stats->hist[BRW_R_IO_TIME], jiffies - start_time); } } else { lprocfs_oh_tally(&obd->u.filter.fo_filter_stats. hist[BRW_W_DIO_FRAGS], frags); lprocfs_oh_tally_log2(&obd->u.filter.fo_filter_stats. hist[BRW_W_IO_TIME], jiffies - start_time); if (exp->exp_nid_stats && exp->exp_nid_stats->nid_brw_stats) { lprocfs_oh_tally(&exp->exp_nid_stats->nid_brw_stats-> hist[BRW_W_DIO_FRAGS], frags); lprocfs_oh_tally_log2(&exp->exp_nid_stats-> nid_brw_stats->hist[BRW_W_IO_TIME], jiffies - start_time); } } if (rc == 0) rc = iobuf->dr_error; RETURN(rc); } /* Must be called with i_mutex taken for writes; this will drop it */ int filter_direct_io(int rw, struct dentry *dchild, struct filter_iobuf *iobuf, struct obd_export *exp, struct iattr *attr, struct obd_trans_info *oti, void **wait_handle) { struct obd_device *obd = exp->exp_obd; struct inode *inode = dchild->d_inode; int blocks_per_page = CFS_PAGE_SIZE >> inode->i_blkbits; int rc, rc2, create; cfs_mutex_t *mutex; ENTRY; LASSERTF(iobuf->dr_npages <= iobuf->dr_max_pages, "%d,%d\n", iobuf->dr_npages, iobuf->dr_max_pages); LASSERT(iobuf->dr_npages <= OBDFILTER_CREATED_SCRATCHPAD_ENTRIES); if (rw == OBD_BRW_READ) { if (iobuf->dr_npages == 0) RETURN(0); create = 0; mutex = NULL; } else { LASSERTF(rw == OBD_BRW_WRITE, "%x\n", rw); LASSERT(iobuf->dr_npages > 0); create = 1; mutex = &obd->u.filter.fo_alloc_lock; lquota_enforce(filter_quota_interface_ref, obd, iobuf->dr_ignore_quota); } if (rw == OBD_BRW_WRITE && OBD_FAIL_CHECK(OBD_FAIL_OST_MAPBLK_ENOSPC)) { rc = -ENOSPC; } else { rc = fsfilt_map_inode_pages(obd, inode, iobuf->dr_pages, iobuf->dr_npages, iobuf->dr_blocks, obdfilter_created_scratchpad, create, mutex); } if (rw == OBD_BRW_WRITE) { if (rc == 0) { filter_tally(exp, iobuf->dr_pages, iobuf->dr_npages, iobuf->dr_blocks, blocks_per_page, 1); if (attr->ia_size > i_size_read(inode)) attr->ia_valid |= ATTR_SIZE; rc = fsfilt_setattr(obd, dchild, oti->oti_handle, attr, 0); } UNLOCK_INODE_MUTEX(inode); /* Force commit to make the just-deleted blocks * reusable. LU-456 */ if (rc == -ENOSPC) { fsfilt_commit(obd, inode, oti->oti_handle, 1); RETURN(rc); } rc2 = filter_finish_transno(exp, inode, oti, 0, 0); if (rc2 != 0) { CERROR("can't close transaction: %d\n", rc2); if (rc == 0) rc = rc2; } if (wait_handle) rc2 = fsfilt_commit_async(obd,inode,oti->oti_handle, wait_handle); else rc2 = fsfilt_commit(obd, inode, oti->oti_handle, 0); if (rc == 0) rc = rc2; if (rc != 0) RETURN(rc); } else if (rc == 0) { filter_tally(exp, iobuf->dr_pages, iobuf->dr_npages, iobuf->dr_blocks, blocks_per_page, 0); } RETURN(filter_do_bio(exp, inode, iobuf, rw)); } /* See if there are unallocated parts in given file region */ static int filter_range_is_mapped(struct inode *inode, obd_size offset, int len) { sector_t (*fs_bmap)(struct address_space *, sector_t) = inode->i_mapping->a_ops->bmap; int j; /* We can't know if we are overwriting or not */ if (fs_bmap == NULL) return 0; offset >>= inode->i_blkbits; len >>= inode->i_blkbits; for (j = 0; j <= len; j++) if (fs_bmap(inode->i_mapping, offset + j) == 0) return 0; return 1; } /* * interesting use cases on how it interacts with VM: * * - vm writeout -- shouldn't see our pages as we don't mark them dirty * though vm can find partial page left dirty by truncate. in this * usual writeout is used unless our write rewrite that page - then we * drop PG_dirty with PG_lock held. * * - else? * */ int filter_commitrw_write(struct obd_export *exp, struct obdo *oa, int objcount, struct obd_ioobj *obj, struct niobuf_remote *nb, int niocount, struct niobuf_local *res, struct obd_trans_info *oti, int rc) { struct niobuf_local *lnb; struct filter_iobuf *iobuf = NULL; struct lvfs_run_ctxt saved; struct fsfilt_objinfo fso; struct iattr iattr = { 0 }; struct inode *inode = res->dentry->d_inode; unsigned long now = jiffies; int i, err, cleanup_phase = 0; struct obd_device *obd = exp->exp_obd; struct filter_obd *fo = &obd->u.filter; void *wait_handle = NULL; int total_size = 0; unsigned int qcids[MAXQUOTAS] = { oa->o_uid, oa->o_gid }; int rec_pending[MAXQUOTAS] = { 0, 0 }, quota_pages = 0; int sync_journal_commit = obd->u.filter.fo_syncjournal; int retries = 0; ENTRY; LASSERT(oti != NULL); LASSERT(objcount == 1); LASSERT(current->journal_info == NULL); if (rc != 0) GOTO(cleanup, rc); iobuf = filter_iobuf_get(&obd->u.filter, oti); if (IS_ERR(iobuf)) GOTO(cleanup, rc = PTR_ERR(iobuf)); cleanup_phase = 1; fso.fso_dentry = res->dentry; fso.fso_bufcnt = obj->ioo_bufcnt; iobuf->dr_ignore_quota = 0; for (i = 0, lnb = res; i < niocount; i++, lnb++) { loff_t this_size; __u32 flags = lnb->flags; if (filter_range_is_mapped(inode, lnb->offset, lnb->len)) { /* If overwriting an existing block, * we don't need a grant */ if (!(flags & OBD_BRW_GRANTED) && lnb->rc == -ENOSPC) lnb->rc = 0; } else { quota_pages++; } if (lnb->rc) { /* ENOSPC, network RPC error, etc. */ CDEBUG(D_INODE, "Skipping [%d] == %d\n", i, lnb->rc); continue; } LASSERT(PageLocked(lnb->page)); LASSERT(!PageWriteback(lnb->page)); /* since write & truncate are serialized by the i_alloc_sem, * even partial truncate should not leave dirty pages in * the page cache */ LASSERT(!PageDirty(lnb->page)); SetPageUptodate(lnb->page); err = filter_iobuf_add_page(obd, iobuf, inode, lnb->page); LASSERT (err == 0); total_size += lnb->len; /* we expect these pages to be in offset order, but we'll * be forgiving */ this_size = lnb->offset + lnb->len; if (this_size > iattr.ia_size) iattr.ia_size = this_size; /* if one page is a write-back page from client cache and * not from direct_io, or it's written by root, then mark * the whole io request as ignore quota request, remote * client can not break through quota. */ if (exp_connect_rmtclient(exp)) flags &= ~OBD_BRW_NOQUOTA; if ((flags & OBD_BRW_NOQUOTA) || (flags & (OBD_BRW_FROM_GRANT | OBD_BRW_SYNC)) == OBD_BRW_FROM_GRANT) iobuf->dr_ignore_quota = 1; if (!(lnb->flags & OBD_BRW_ASYNC)) { sync_journal_commit = 1; } } /* we try to get enough quota to write here, and let ldiskfs * decide if it is out of quota or not b=14783 */ rc = lquota_chkquota(filter_quota_interface_ref, obd, exp, qcids, rec_pending, quota_pages, oti, LQUOTA_FLAGS_BLK, (void *)inode, obj->ioo_bufcnt); if (rc == -ENOTCONN) GOTO(cleanup, rc); if (OBD_FAIL_CHECK(OBD_FAIL_OST_DQACQ_NET)) GOTO(cleanup, rc = -EINPROGRESS); push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL); cleanup_phase = 2; fsfilt_check_slow(obd, now, "quota init"); retry: LOCK_INODE_MUTEX(inode); fsfilt_check_slow(obd, now, "i_mutex"); oti->oti_handle = fsfilt_brw_start(obd, objcount, &fso, niocount, res, oti); if (IS_ERR(oti->oti_handle)) { UNLOCK_INODE_MUTEX(inode); rc = PTR_ERR(oti->oti_handle); CDEBUG(rc == -ENOSPC ? D_INODE : D_ERROR, "error starting transaction: rc = %d\n", rc); oti->oti_handle = NULL; GOTO(cleanup, rc); } /* have to call fsfilt_commit() from this point on */ fsfilt_check_slow(obd, now, "brw_start"); /* Locking order: i_mutex -> journal_lock -> dqptr_sem. LU-952 */ ll_vfs_dq_init(inode); i = OBD_MD_FLATIME | OBD_MD_FLMTIME | OBD_MD_FLCTIME; /* If the inode still has SUID+SGID bits set (see filter_precreate()) * then we will accept the UID+GID if sent by the client for * initializing the ownership of this inode. We only allow this to * happen once (so clear these bits) and later only allow setattr. */ if (inode->i_mode & S_ISUID) i |= OBD_MD_FLUID; if (inode->i_mode & S_ISGID) i |= OBD_MD_FLGID; iattr_from_obdo(&iattr, oa, i); if (iattr.ia_valid & (ATTR_UID | ATTR_GID)) { unsigned int save; CDEBUG(D_INODE, "update UID/GID to %lu/%lu\n", (unsigned long)oa->o_uid, (unsigned long)oa->o_gid); cfs_cap_raise(CFS_CAP_SYS_RESOURCE); iattr.ia_valid |= ATTR_MODE; iattr.ia_mode = inode->i_mode; if (iattr.ia_valid & ATTR_UID) iattr.ia_mode &= ~S_ISUID; if (iattr.ia_valid & ATTR_GID) iattr.ia_mode &= ~S_ISGID; rc = filter_update_fidea(exp, inode, oti->oti_handle, oa); /* To avoid problems with quotas, UID and GID must be set * in the inode before filter_direct_io() - see bug 10357. */ save = iattr.ia_valid; iattr.ia_valid &= (ATTR_UID | ATTR_GID); rc = fsfilt_setattr(obd, res->dentry, oti->oti_handle,&iattr,0); CDEBUG(D_QUOTA, "set uid(%u)/gid(%u) to ino(%lu). rc(%d)\n", iattr.ia_uid, iattr.ia_gid, inode->i_ino, rc); iattr.ia_valid = save & ~(ATTR_UID | ATTR_GID); } CDEBUG(D_INODE, "FID "DFID" to write: s="LPU64" m="LPU64" a="LPU64 " c="LPU64" b="LPU64"\n", oa->o_id, (__u32)oa->o_seq, (__u32)oa->o_seq, oa->o_size, oa->o_mtime, oa->o_atime, oa->o_ctime, oa->o_blocks); /* filter_direct_io drops i_mutex */ rc = filter_direct_io(OBD_BRW_WRITE, res->dentry, iobuf, exp, &iattr, oti, sync_journal_commit ? &wait_handle : NULL); if (rc == -ENOSPC && retries++ < 3) { CDEBUG(D_INODE, "retry after force commit, retries:%d\n", retries); oti->oti_handle = NULL; fsfilt_check_slow(obd, now, "direct_io"); goto retry; } obdo_from_inode(oa, inode, (rc == 0 ? FILTER_VALID_FLAGS : 0) | OBD_MD_FLUID | OBD_MD_FLGID); CDEBUG(D_INODE, "FID "DFID" after write: s="LPU64" m="LPU64" a="LPU64 " c="LPU64" b="LPU64"\n", oa->o_id, (__u32)oa->o_seq, (__u32)oa->o_seq, oa->o_size, oa->o_mtime, oa->o_atime, oa->o_ctime, oa->o_blocks); lquota_getflag(filter_quota_interface_ref, obd, oa); fsfilt_check_slow(obd, now, "direct_io"); if (wait_handle) err = fsfilt_commit_wait(obd, inode, wait_handle); else err = 0; if (err) { CERROR("Failure to commit OST transaction (%d)?\n", err); if (rc == 0) rc = err; } /* In rare cases fsfilt_commit_wait() will wake up and return after * the transaction has finished its work and updated j_commit_sequence * but the commit callbacks have not been run yet. Wait here until * that is finished so that clients requesting sync IO don't see the * reply transno < last_committed. LU-753 */ if (unlikely(obd->obd_replayable && !rc && wait_handle && oti->oti_transno > obd->obd_last_committed)) { cfs_waitq_t wq; struct l_wait_info lwi = LWI_TIMEOUT_INTERVAL(cfs_time_seconds(5), (cfs_duration_t)((HZ + 4)/5), NULL, NULL); cfs_waitq_init(&wq); l_wait_event(wq, oti->oti_transno <= obd->obd_last_committed, &lwi); /* commit callback isn't done after waiting for 5 secs ? */ if (unlikely(oti->oti_transno > obd->obd_last_committed)) CERROR("transno:"LPU64" > last_committed:"LPU64"\n", oti->oti_transno, obd->obd_last_committed); } fsfilt_check_slow(obd, now, "commitrw commit"); cleanup: lquota_pending_commit(filter_quota_interface_ref, obd, qcids, rec_pending, 1); filter_grant_commit(exp, niocount, res); switch (cleanup_phase) { case 2: pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL); LASSERT(current->journal_info == NULL); case 1: filter_iobuf_put(&obd->u.filter, iobuf, oti); case 0: /* * lnb->page automatically returns back into per-thread page * pool (bug 5137) */ break; } /* trigger quota pre-acquire */ err = lquota_adjust(filter_quota_interface_ref, obd, qcids, NULL, rc, FSFILT_OP_CREATE); CDEBUG(err ? D_ERROR : D_QUOTA, "filter adjust qunit! " "(rc:%d, uid:%u, gid:%u)\n", err, qcids[USRQUOTA], qcids[GRPQUOTA]); if (qcids[USRQUOTA] != oa->o_uid || qcids[GRPQUOTA] != oa->o_gid) { qcids[USRQUOTA] = oa->o_uid; qcids[GRPQUOTA] = oa->o_gid; err = lquota_adjust(filter_quota_interface_ref, obd, qcids, NULL, rc, FSFILT_OP_CREATE); CDEBUG(err ? D_ERROR : D_QUOTA, "filter adjust qunit! " "(rc:%d, uid:%u, gid:%u)\n", err, qcids[USRQUOTA], qcids[GRPQUOTA]); } for (i = 0, lnb = res; i < niocount; i++, lnb++) { if (lnb->page == NULL) continue; if (rc) /* If the write has failed, the page cache may * not be consitent with what is on disk, so * force pages to be reread next time it is * accessed */ ClearPageUptodate(lnb->page); LASSERT(PageLocked(lnb->page)); unlock_page(lnb->page); page_cache_release(lnb->page); lnb->page = NULL; } f_dput(res->dentry); if (inode) { if (fo->fo_writethrough_cache == 0 || i_size_read(inode) > fo->fo_readcache_max_filesize) filter_release_cache(obd, obj, nb, inode); up_read(&inode->i_alloc_sem); } RETURN(rc); }