/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- * vim:expandtab:shiftwidth=8:tabstop=8: * * linux/fs/obdfilter/filter_io.c * * Copyright (c) 2001-2003 Cluster File Systems, Inc. * Author: Peter Braam * Author: Andreas Dilger * Author: Phil Schwan * * This file is part of the Lustre file system, http://www.lustre.org * Lustre is a trademark of Cluster File Systems, Inc. * * You may have signed or agreed to another license before downloading * this software. If so, you are bound by the terms and conditions * of that agreement, and the following does not apply to you. See the * LICENSE file included with this distribution for more information. * * If you did not agree to a different license, then this copy of Lustre * is open source software; you can redistribute it and/or modify it * under the terms of version 2 of the GNU General Public License as * published by the Free Software Foundation. * * In either case, Lustre 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 * license text for more details. */ #ifdef HAVE_KERNEL_CONFIG_H #include #endif #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) struct filter_iobuf { atomic_t dr_numreqs; /* number of reqs being processed */ wait_queue_head_t dr_wait; int dr_max_pages; int dr_npages; int dr_error; struct page **dr_pages; unsigned long *dr_blocks; spinlock_t dr_lock; /* IRQ lock */ unsigned int dr_ignore_quota:1; struct filter_obd *dr_filter; }; static void record_start_io(struct filter_iobuf *iobuf, int rw, int size, struct obd_export *exp) { struct filter_obd *filter = iobuf->dr_filter; atomic_inc(&iobuf->dr_numreqs); if (rw == OBD_BRW_READ) { atomic_inc(&filter->fo_r_in_flight); lprocfs_oh_tally(&filter->fo_filter_stats.hist[BRW_R_RPC_HIST], atomic_read(&filter->fo_r_in_flight)); lprocfs_oh_tally_log2(&filter->fo_filter_stats.hist[BRW_R_DISK_IOSIZE], size); lprocfs_oh_tally(&exp->exp_filter_data.fed_brw_stats.hist[BRW_R_RPC_HIST], atomic_read(&filter->fo_r_in_flight)); lprocfs_oh_tally_log2(&exp->exp_filter_data.fed_brw_stats.hist[BRW_R_DISK_IOSIZE], size); } else { atomic_inc(&filter->fo_w_in_flight); lprocfs_oh_tally(&filter->fo_filter_stats.hist[BRW_W_RPC_HIST], atomic_read(&filter->fo_w_in_flight)); lprocfs_oh_tally_log2(&filter->fo_filter_stats.hist[BRW_W_DISK_IOSIZE], size); lprocfs_oh_tally(&exp->exp_filter_data.fed_brw_stats.hist[BRW_W_RPC_HIST], atomic_read(&filter->fo_w_in_flight)); lprocfs_oh_tally_log2(&exp->exp_filter_data.fed_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) atomic_dec(&filter->fo_r_in_flight); else atomic_dec(&filter->fo_w_in_flight); if (atomic_dec_and_test(&iobuf->dr_numreqs)) wake_up(&iobuf->dr_wait); } static int dio_complete_routine(struct bio *bio, unsigned int done, int error) { struct filter_iobuf *iobuf = bio->bi_private; unsigned long flags; /* CAVEAT EMPTOR: possibly in IRQ context * DO NOT record procfs stats here!!! */ if (bio->bi_size) /* Not complete */ return 1; if (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 CFS, 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 I/O -- so 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, atomic_read(&bio->bi_cnt), bio->bi_private); return 0; } spin_lock_irqsave(&iobuf->dr_lock, flags); if (iobuf->dr_error == 0) iobuf->dr_error = error; spin_unlock_irqrestore(&iobuf->dr_lock, flags); record_finish_io(iobuf, test_bit(BIO_RW, &bio->bi_rw) ? OBD_BRW_WRITE : OBD_BRW_READ, 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); 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; iobuf->dr_filter = filter; init_waitqueue_head(&iobuf->dr_wait); atomic_set(&iobuf->dr_numreqs, 0); spin_lock_init(&iobuf->dr_lock); iobuf->dr_max_pages = num_pages; iobuf->dr_npages = 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; 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); 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_id : -1; if (unlikely(thread_id < 0)) { filter_free_iobuf(iobuf); return; } LASSERTF(filter->fo_iobuf_pool[thread_id] == iobuf, "iobuf mismatch for thread %d: pool %p iobuf %p\n", thread_id, filter->fo_iobuf_pool[thread_id], iobuf); 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 = blocks[block_idx + i] << sector_bits; /* Additional contiguous file blocks? */ while (i + nblocks < blocks_per_page && (sector + nblocks*(blocksize>>9)) == (blocks[block_idx + i + nblocks] << sector_bits)) nblocks++; 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) { request_queue_t *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)\n", bio->bi_size, bio->bi_vcnt, bio->bi_max_vecs, bio->bi_size >> 9, q->max_sectors, bio_phys_segments(q, bio), q->max_phys_segments, bio_hw_segments(q, bio), q->max_hw_segments); 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 */ bio = bio_alloc(GFP_NOIO, (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: wait_event(iobuf->dr_wait, 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(&exp->exp_filter_data.fed_brw_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); lprocfs_oh_tally_log2(&exp->exp_filter_data.fed_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(&exp->exp_filter_data.fed_brw_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); lprocfs_oh_tally_log2(&exp->exp_filter_data.fed_brw_stats.hist[BRW_W_IO_TIME], jiffies - start_time); } if (rc == 0) rc = iobuf->dr_error; RETURN(rc); } /* These are our hacks to keep our directio/bh IO coherent with ext3's * page cache use. Most notably ext3 reads file data into the page * cache when it is zeroing the tail of partial-block truncates and * leaves it there, sometimes generating io from it at later truncates. * This removes the partial page and its buffers from the page cache, * so it should only ever cause a wait in rare cases, as otherwise we * always do full-page IO to the OST. * * The call to truncate_complete_page() will call journal_invalidatepage() * to free the buffers and drop the page from cache. The buffers should * not be dirty, because we already called fdatasync/fdatawait on them. */ static int filter_sync_inode_data(struct inode *inode, int locked) { int rc = 0; /* This is nearly do_fsync(), without the waiting on the inode */ /* XXX: in 2.6.16 (at least) we don't need to hold i_mutex over * filemap_fdatawrite() and filemap_fdatawait(), so we may no longer * need this lock here at all. */ if (!locked) LOCK_INODE_MUTEX(inode); if (inode->i_mapping->nrpages) { current->flags |= PF_SYNCWRITE; rc = filemap_fdatawrite(inode->i_mapping); if (rc == 0) rc = filemap_fdatawait(inode->i_mapping); current->flags &= ~PF_SYNCWRITE; } if (!locked) UNLOCK_INODE_MUTEX(inode); return rc; } /* Clear pages from the mapping before we do direct IO to that offset. * Now that the only source of such pages in the truncate path flushes * these pages to disk and then discards them, this is error condition. * If add back read cache this will happen again. This could be disabled * until that time if we never see the below error. */ static int filter_clear_page_cache(struct inode *inode, struct filter_iobuf *iobuf) { struct page *page; int i, rc; rc = filter_sync_inode_data(inode, 0); if (rc != 0) RETURN(rc); /* be careful to call this after fsync_inode_data_buffers has waited * for IO to complete before we evict it from the cache */ for (i = 0; i < iobuf->dr_npages; i++) { page = find_lock_page(inode->i_mapping, iobuf->dr_pages[i]->index); if (page == NULL) continue; if (page->mapping != NULL) { CERROR("page %lu (%d/%d) in page cache during write!\n", page->index, i, iobuf->dr_npages); wait_on_page_writeback(page); ll_truncate_complete_page(page); } unlock_page(page); page_cache_release(page); } return 0; } int filter_clear_truncated_page(struct inode *inode) { struct page *page; int rc; /* Truncate on page boundary, so nothing to flush? */ if (!(inode->i_size & ~CFS_PAGE_MASK)) return 0; rc = filter_sync_inode_data(inode, 1); if (rc != 0) RETURN(rc); /* be careful to call this after fsync_inode_data_buffers has waited * for IO to complete before we evict it from the cache */ page = find_lock_page(inode->i_mapping, inode->i_size >> CFS_PAGE_SHIFT); if (page) { if (page->mapping != NULL) { wait_on_page_writeback(page); ll_truncate_complete_page(page); } unlock_page(page); page_cache_release(page); } return 0; } /* 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; struct semaphore *sem; 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; sem = NULL; } else { LASSERTF(rw == OBD_BRW_WRITE, "%x\n", rw); LASSERT(iobuf->dr_npages > 0); create = 1; sem = &obd->u.filter.fo_alloc_lock; lquota_enforce(filter_quota_interface_ref, obd, iobuf->dr_ignore_quota); } rc = fsfilt_map_inode_pages(obd, inode, iobuf->dr_pages, iobuf->dr_npages, iobuf->dr_blocks, obdfilter_created_scratchpad, create, sem); if (rw == OBD_BRW_WRITE) { if (rc == 0) { filter_tally_write(exp, iobuf->dr_pages, iobuf->dr_npages, iobuf->dr_blocks, blocks_per_page); if (attr->ia_size > inode->i_size) attr->ia_valid |= ATTR_SIZE; rc = fsfilt_setattr(obd, dchild, oti->oti_handle, attr, 0); } UNLOCK_INODE_MUTEX(inode); rc2 = filter_finish_transno(exp, oti, 0); if (rc2 != 0) { CERROR("can't close transaction: %d\n", rc2); if (rc == 0) rc = rc2; } rc2 =fsfilt_commit_async(obd,inode,oti->oti_handle,wait_handle); if (rc == 0) rc = rc2; if (rc != 0) RETURN(rc); } else if (rc == 0) { filter_tally_read(exp, iobuf->dr_pages, iobuf->dr_npages, iobuf->dr_blocks, blocks_per_page); } rc = filter_clear_page_cache(inode, iobuf); if (rc != 0) RETURN(rc); 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; } int filter_commitrw_write(struct obd_export *exp, struct obdo *oa, int objcount, struct obd_ioobj *obj, 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 = NULL; unsigned long now = jiffies; int i, err, cleanup_phase = 0; struct obd_device *obd = exp->exp_obd; void *wait_handle; int total_size = 0, rc2; unsigned int qcids[MAXQUOTAS] = {0, 0}; ENTRY; LASSERT(oti != NULL); LASSERT(objcount == 1); LASSERT(current->journal_info == NULL); if (rc != 0) GOTO(cleanup, rc); /* Unfortunately, if quota master is too busy to handle the * pre-dqacq in time and quota hash on ost is used up, we * have to wait for the completion of in flight dqacq/dqrel, * then try again */ if ((rc2 = lquota_chkquota(filter_quota_interface_ref, obd, oa->o_uid, oa->o_gid, niocount)) == QUOTA_RET_ACQUOTA) { OBD_FAIL_TIMEOUT(OBD_FAIL_OST_HOLD_WRITE_RPC, 90); lquota_acquire(filter_quota_interface_ref, obd, oa->o_uid, oa->o_gid); } if (rc2 < 0) { rc = rc2; 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; inode = res->dentry->d_inode; iobuf->dr_ignore_quota = 0; for (i = 0, lnb = res; i < obj->ioo_bufcnt; i++, lnb++) { loff_t this_size; /* If overwriting an existing block, we don't need a grant */ if (!(lnb->flags & OBD_BRW_GRANTED) && lnb->rc == -ENOSPC && filter_range_is_mapped(inode, lnb->offset, lnb->len)) lnb->rc = 0; if (lnb->rc) { /* ENOSPC, network RPC error, etc. */ CDEBUG(D_INODE, "Skipping [%d] == %d\n", i, lnb->rc); continue; } 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, or it's * written by root, then mark the whole io request as ignore * quota request */ if (lnb->flags & (OBD_BRW_FROM_GRANT | OBD_BRW_NOQUOTA)) iobuf->dr_ignore_quota = 1; } push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL); cleanup_phase = 2; DQUOT_INIT(inode); LOCK_INODE_MUTEX(inode); fsfilt_check_slow(obd, now, obd_timeout, "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, obd_timeout, "brw_start"); 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); cap_raise(current->cap_effective, 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); } /* filter_direct_io drops i_mutex */ rc = filter_direct_io(OBD_BRW_WRITE, res->dentry, iobuf, exp, &iattr, oti, &wait_handle); if (rc == 0) obdo_from_inode(oa, inode, FILTER_VALID_FLAGS |OBD_MD_FLUID |OBD_MD_FLGID); else obdo_from_inode(oa, inode, OBD_MD_FLUID | OBD_MD_FLGID); lquota_getflag(filter_quota_interface_ref, obd, oa); fsfilt_check_slow(obd, now, obd_timeout, "direct_io"); err = fsfilt_commit_wait(obd, inode, wait_handle); if (err) { CERROR("Failure to commit OST transaction (%d)?\n", err); rc = err; } if (obd->obd_replayable && !rc) LASSERTF(oti->oti_transno <= obd->obd_last_committed, "oti_transno "LPU64" last_committed "LPU64"\n", oti->oti_transno, obd->obd_last_committed); fsfilt_check_slow(obd, now, obd_timeout, "commitrw commit"); cleanup: 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) */ f_dput(res->dentry); } /* trigger quota pre-acquire */ 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)\n", err); RETURN(rc); }