1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright 2008 Sun Microsystems, Inc. All rights reserved
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/obdfilter/filter_io_26.c
38 * Author: Peter Braam <braam@clusterfs.com>
39 * Author: Andreas Dilger <adilger@clusterfs.com>
40 * Author: Phil Schwan <phil@clusterfs.com>
43 #ifndef AUTOCONF_INCLUDED
44 #include <linux/config.h>
46 #include <linux/module.h>
47 #include <linux/pagemap.h> // XXX kill me soon
48 #include <linux/version.h>
49 #include <linux/buffer_head.h>
51 #define DEBUG_SUBSYSTEM S_FILTER
53 #include <obd_class.h>
54 #include <lustre_fsfilt.h>
55 #include <lustre_quota.h>
56 #include "filter_internal.h"
58 /* 512byte block min */
59 #define MAX_BLOCKS_PER_PAGE (CFS_PAGE_SIZE / 512)
61 cfs_atomic_t dr_numreqs; /* number of reqs being processed */
66 struct page **dr_pages;
67 unsigned long *dr_blocks;
68 unsigned int dr_ignore_quota:1;
69 struct filter_obd *dr_filter;
72 static void record_start_io(struct filter_iobuf *iobuf, int rw, int size,
73 struct obd_export *exp)
75 struct filter_obd *filter = iobuf->dr_filter;
77 cfs_atomic_inc(&iobuf->dr_numreqs);
79 if (rw == OBD_BRW_READ) {
80 cfs_atomic_inc(&filter->fo_r_in_flight);
81 lprocfs_oh_tally(&filter->fo_filter_stats.hist[BRW_R_RPC_HIST],
82 cfs_atomic_read(&filter->fo_r_in_flight));
83 lprocfs_oh_tally_log2(&filter->
84 fo_filter_stats.hist[BRW_R_DISK_IOSIZE],
86 if (exp->exp_nid_stats && exp->exp_nid_stats->nid_brw_stats) {
87 lprocfs_oh_tally(&exp->exp_nid_stats->nid_brw_stats->
89 cfs_atomic_read(&filter-> \
91 lprocfs_oh_tally_log2(&exp->exp_nid_stats->
92 nid_brw_stats->hist[BRW_R_DISK_IOSIZE],
96 cfs_atomic_inc(&filter->fo_w_in_flight);
97 lprocfs_oh_tally(&filter->fo_filter_stats.hist[BRW_W_RPC_HIST],
98 cfs_atomic_read(&filter->fo_w_in_flight));
99 lprocfs_oh_tally_log2(&filter->
100 fo_filter_stats.hist[BRW_W_DISK_IOSIZE],
102 if (exp->exp_nid_stats && exp->exp_nid_stats->nid_brw_stats) {
103 lprocfs_oh_tally(&exp->exp_nid_stats->nid_brw_stats->
104 hist[BRW_W_RPC_HIST],
105 cfs_atomic_read(&filter-> \
107 lprocfs_oh_tally_log2(&exp->exp_nid_stats->
108 nid_brw_stats->hist[BRW_W_DISK_IOSIZE],
114 static void record_finish_io(struct filter_iobuf *iobuf, int rw, int rc)
116 struct filter_obd *filter = iobuf->dr_filter;
118 /* CAVEAT EMPTOR: possibly in IRQ context
119 * DO NOT record procfs stats here!!! */
121 if (rw == OBD_BRW_READ)
122 cfs_atomic_dec(&filter->fo_r_in_flight);
124 cfs_atomic_dec(&filter->fo_w_in_flight);
126 if (cfs_atomic_dec_and_test(&iobuf->dr_numreqs))
127 cfs_waitq_signal(&iobuf->dr_wait);
130 static int dio_complete_routine(struct bio *bio, unsigned int done, int error)
132 struct filter_iobuf *iobuf = bio->bi_private;
136 /* CAVEAT EMPTOR: possibly in IRQ context
137 * DO NOT record procfs stats here!!! */
139 if (bio->bi_size) /* Not complete */
142 if (unlikely(iobuf == NULL)) {
143 CERROR("***** bio->bi_private is NULL! This should never "
144 "happen. Normally, I would crash here, but instead I "
145 "will dump the bio contents to the console. Please "
146 "report this to <http://bugzilla.lustre.org/> , along "
147 "with any interesting messages leading up to this point "
148 "(like SCSI errors, perhaps). Because bi_private is "
149 "NULL, I can't wake up the thread that initiated this "
150 "IO - you will probably have to reboot this node.\n");
151 CERROR("bi_next: %p, bi_flags: %lx, bi_rw: %lu, bi_vcnt: %d, "
152 "bi_idx: %d, bi->size: %d, bi_end_io: %p, bi_cnt: %d, "
153 "bi_private: %p\n", bio->bi_next, bio->bi_flags,
154 bio->bi_rw, bio->bi_vcnt, bio->bi_idx, bio->bi_size,
155 bio->bi_end_io, cfs_atomic_read(&bio->bi_cnt),
160 /* the check is outside of the cycle for performance reason -bzzz */
161 if (!cfs_test_bit(BIO_RW, &bio->bi_rw)) {
162 bio_for_each_segment(bvl, bio, i) {
163 if (likely(error == 0))
164 SetPageUptodate(bvl->bv_page);
165 LASSERT(PageLocked(bvl->bv_page));
166 ClearPageConstant(bvl->bv_page);
168 record_finish_io(iobuf, OBD_BRW_READ, error);
170 if (mapping_cap_page_constant_write(iobuf->dr_pages[0]->mapping)){
171 bio_for_each_segment(bvl, bio, i) {
172 ClearPageConstant(bvl->bv_page);
175 record_finish_io(iobuf, OBD_BRW_WRITE, error);
178 /* any real error is good enough -bzzz */
179 if (error != 0 && iobuf->dr_error == 0)
180 iobuf->dr_error = error;
182 /* Completed bios used to be chained off iobuf->dr_bios and freed in
183 * filter_clear_dreq(). It was then possible to exhaust the biovec-256
184 * mempool when serious on-disk fragmentation was encountered,
185 * deadlocking the OST. The bios are now released as soon as complete
186 * so the pool cannot be exhausted while IOs are competing. bug 10076 */
191 static int can_be_merged(struct bio *bio, sector_t sector)
198 size = bio->bi_size >> 9;
199 return bio->bi_sector + size == sector ? 1 : 0;
202 struct filter_iobuf *filter_alloc_iobuf(struct filter_obd *filter,
203 int rw, int num_pages)
205 struct filter_iobuf *iobuf;
207 LASSERTF(rw == OBD_BRW_WRITE || rw == OBD_BRW_READ, "%x\n", rw);
209 OBD_ALLOC(iobuf, sizeof(*iobuf));
213 OBD_ALLOC(iobuf->dr_pages, num_pages * sizeof(*iobuf->dr_pages));
214 if (iobuf->dr_pages == NULL)
217 OBD_ALLOC(iobuf->dr_blocks,
218 MAX_BLOCKS_PER_PAGE * num_pages * sizeof(*iobuf->dr_blocks));
219 if (iobuf->dr_blocks == NULL)
222 iobuf->dr_filter = filter;
223 cfs_waitq_init(&iobuf->dr_wait);
224 cfs_atomic_set(&iobuf->dr_numreqs, 0);
225 iobuf->dr_max_pages = num_pages;
226 iobuf->dr_npages = 0;
232 OBD_FREE(iobuf->dr_pages,
233 num_pages * sizeof(*iobuf->dr_pages));
235 OBD_FREE(iobuf, sizeof(*iobuf));
237 RETURN(ERR_PTR(-ENOMEM));
240 static void filter_clear_iobuf(struct filter_iobuf *iobuf)
242 iobuf->dr_npages = 0;
244 cfs_atomic_set(&iobuf->dr_numreqs, 0);
247 void filter_free_iobuf(struct filter_iobuf *iobuf)
249 int num_pages = iobuf->dr_max_pages;
251 filter_clear_iobuf(iobuf);
253 OBD_FREE(iobuf->dr_blocks,
254 MAX_BLOCKS_PER_PAGE * num_pages * sizeof(*iobuf->dr_blocks));
255 OBD_FREE(iobuf->dr_pages,
256 num_pages * sizeof(*iobuf->dr_pages));
260 void filter_iobuf_put(struct filter_obd *filter, struct filter_iobuf *iobuf,
261 struct obd_trans_info *oti)
263 int thread_id = (oti && oti->oti_thread) ?
264 oti->oti_thread->t_id : -1;
266 if (unlikely(thread_id < 0)) {
267 filter_free_iobuf(iobuf);
271 LASSERTF(filter->fo_iobuf_pool[thread_id] == iobuf,
272 "iobuf mismatch for thread %d: pool %p iobuf %p\n",
273 thread_id, filter->fo_iobuf_pool[thread_id], iobuf);
274 filter_clear_iobuf(iobuf);
277 int filter_iobuf_add_page(struct obd_device *obd, struct filter_iobuf *iobuf,
278 struct inode *inode, struct page *page)
280 LASSERT(iobuf->dr_npages < iobuf->dr_max_pages);
281 iobuf->dr_pages[iobuf->dr_npages++] = page;
286 int filter_do_bio(struct obd_export *exp, struct inode *inode,
287 struct filter_iobuf *iobuf, int rw)
289 struct obd_device *obd = exp->exp_obd;
290 int blocks_per_page = CFS_PAGE_SIZE >> inode->i_blkbits;
291 struct page **pages = iobuf->dr_pages;
292 int npages = iobuf->dr_npages;
293 unsigned long *blocks = iobuf->dr_blocks;
294 int total_blocks = npages * blocks_per_page;
295 int sector_bits = inode->i_sb->s_blocksize_bits - 9;
296 unsigned int blocksize = inode->i_sb->s_blocksize;
297 struct bio *bio = NULL;
299 unsigned long start_time = jiffies;
301 unsigned int page_offset;
310 LASSERT(iobuf->dr_npages == npages);
311 LASSERT(total_blocks <= OBDFILTER_CREATED_SCRATCHPAD_ENTRIES);
313 for (page_idx = 0, block_idx = 0;
315 page_idx++, block_idx += blocks_per_page) {
317 page = pages[page_idx];
318 LASSERT (block_idx + blocks_per_page <= total_blocks);
320 for (i = 0, page_offset = 0;
322 i += nblocks, page_offset += blocksize * nblocks) {
326 if (blocks[block_idx + i] == 0) { /* hole */
327 LASSERT(rw == OBD_BRW_READ);
328 memset(kmap(page) + page_offset, 0, blocksize);
333 sector = (sector_t)blocks[block_idx + i] << sector_bits;
335 /* Additional contiguous file blocks? */
336 while (i + nblocks < blocks_per_page &&
337 (sector + (nblocks << sector_bits)) ==
338 ((sector_t)blocks[block_idx + i + nblocks] <<
342 /* I only set the page to be constant only if it
343 * is mapped to a contiguous underlying disk block(s).
344 * It will then make sure the corresponding device
345 * cache of raid5 will be overwritten by this page.
347 if ((rw == OBD_BRW_WRITE) &&
348 (nblocks == blocks_per_page) &&
349 mapping_cap_page_constant_write(inode->i_mapping))
350 SetPageConstant(page);
353 can_be_merged(bio, sector) &&
354 bio_add_page(bio, page,
355 blocksize * nblocks, page_offset) != 0)
356 continue; /* added this frag OK */
360 bdev_get_queue(bio->bi_bdev);
362 /* Dang! I have to fragment this I/O */
363 CDEBUG(D_INODE, "bio++ sz %d vcnt %d(%d) "
364 "sectors %d(%d) psg %d(%d) hsg %d(%d)\n",
366 bio->bi_vcnt, bio->bi_max_vecs,
367 bio->bi_size >> 9, q->max_sectors,
368 bio_phys_segments(q, bio),
369 q->max_phys_segments,
370 bio_hw_segments(q, bio),
373 record_start_io(iobuf, rw, bio->bi_size, exp);
374 rc = fsfilt_send_bio(rw, obd, inode, bio);
376 CERROR("Can't send bio: %d\n", rc);
377 record_finish_io(iobuf, rw, rc);
383 /* allocate new bio, limited by max BIO size, b=9945 */
384 bio = bio_alloc(GFP_NOIO, max(BIO_MAX_PAGES,
385 (npages - page_idx) *
388 CERROR("Can't allocate bio %u*%u = %u pages\n",
389 (npages - page_idx), blocks_per_page,
390 (npages - page_idx) * blocks_per_page);
395 bio->bi_bdev = inode->i_sb->s_bdev;
396 bio->bi_sector = sector;
397 bio->bi_end_io = dio_complete_routine;
398 bio->bi_private = iobuf;
400 rc = bio_add_page(bio, page,
401 blocksize * nblocks, page_offset);
407 record_start_io(iobuf, rw, bio->bi_size, exp);
408 rc = fsfilt_send_bio(rw, obd, inode, bio);
413 CERROR("Can't send bio: %d\n", rc);
414 record_finish_io(iobuf, rw, rc);
419 cfs_wait_event(iobuf->dr_wait,
420 cfs_atomic_read(&iobuf->dr_numreqs) == 0);
422 if (rw == OBD_BRW_READ) {
423 lprocfs_oh_tally(&obd->u.filter.fo_filter_stats.
424 hist[BRW_R_DIO_FRAGS],
426 lprocfs_oh_tally_log2(&obd->u.filter.
427 fo_filter_stats.hist[BRW_R_IO_TIME],
428 jiffies - start_time);
429 if (exp->exp_nid_stats && exp->exp_nid_stats->nid_brw_stats) {
430 lprocfs_oh_tally(&exp->exp_nid_stats->nid_brw_stats->
431 hist[BRW_R_DIO_FRAGS],
433 lprocfs_oh_tally_log2(&exp->exp_nid_stats->
434 nid_brw_stats->hist[BRW_R_IO_TIME],
435 jiffies - start_time);
438 lprocfs_oh_tally(&obd->u.filter.fo_filter_stats.
439 hist[BRW_W_DIO_FRAGS], frags);
440 lprocfs_oh_tally_log2(&obd->u.filter.fo_filter_stats.
442 jiffies - start_time);
443 if (exp->exp_nid_stats && exp->exp_nid_stats->nid_brw_stats) {
444 lprocfs_oh_tally(&exp->exp_nid_stats->nid_brw_stats->
445 hist[BRW_W_DIO_FRAGS],
447 lprocfs_oh_tally_log2(&exp->exp_nid_stats->
448 nid_brw_stats->hist[BRW_W_IO_TIME],
449 jiffies - start_time);
454 rc = iobuf->dr_error;
458 /* Must be called with i_mutex taken for writes; this will drop it */
459 int filter_direct_io(int rw, struct dentry *dchild, struct filter_iobuf *iobuf,
460 struct obd_export *exp, struct iattr *attr,
461 struct obd_trans_info *oti, void **wait_handle)
463 struct obd_device *obd = exp->exp_obd;
464 struct inode *inode = dchild->d_inode;
465 int blocks_per_page = CFS_PAGE_SIZE >> inode->i_blkbits;
467 cfs_semaphore_t *sem;
470 LASSERTF(iobuf->dr_npages <= iobuf->dr_max_pages, "%d,%d\n",
471 iobuf->dr_npages, iobuf->dr_max_pages);
472 LASSERT(iobuf->dr_npages <= OBDFILTER_CREATED_SCRATCHPAD_ENTRIES);
474 if (rw == OBD_BRW_READ) {
475 if (iobuf->dr_npages == 0)
480 LASSERTF(rw == OBD_BRW_WRITE, "%x\n", rw);
481 LASSERT(iobuf->dr_npages > 0);
483 sem = &obd->u.filter.fo_alloc_lock;
485 lquota_enforce(filter_quota_interface_ref, obd,
486 iobuf->dr_ignore_quota);
489 rc = fsfilt_map_inode_pages(obd, inode, iobuf->dr_pages,
490 iobuf->dr_npages, iobuf->dr_blocks,
491 obdfilter_created_scratchpad, create, sem);
493 if (rw == OBD_BRW_WRITE) {
495 filter_tally(exp, iobuf->dr_pages,
496 iobuf->dr_npages, iobuf->dr_blocks,
498 if (attr->ia_size > i_size_read(inode))
499 attr->ia_valid |= ATTR_SIZE;
500 rc = fsfilt_setattr(obd, dchild,
501 oti->oti_handle, attr, 0);
504 UNLOCK_INODE_MUTEX(inode);
506 rc2 = filter_finish_transno(exp, inode, oti, 0, 0);
508 CERROR("can't close transaction: %d\n", rc2);
513 rc2 = fsfilt_commit_async(obd,inode,oti->oti_handle,
519 } else if (rc == 0) {
520 filter_tally(exp, iobuf->dr_pages, iobuf->dr_npages,
521 iobuf->dr_blocks, blocks_per_page, 0);
524 RETURN(filter_do_bio(exp, inode, iobuf, rw));
527 /* See if there are unallocated parts in given file region */
528 static int filter_range_is_mapped(struct inode *inode, obd_size offset, int len)
530 sector_t (*fs_bmap)(struct address_space *, sector_t) =
531 inode->i_mapping->a_ops->bmap;
534 /* We can't know if we are overwriting or not */
538 offset >>= inode->i_blkbits;
539 len >>= inode->i_blkbits;
541 for (j = 0; j <= len; j++)
542 if (fs_bmap(inode->i_mapping, offset + j) == 0)
549 * interesting use cases on how it interacts with VM:
551 * - vm writeout -- shouldn't see our pages as we don't mark them dirty
552 * though vm can find partial page left dirty by truncate. in this
553 * usual writeout is used unless our write rewrite that page - then we
554 * drop PG_dirty with PG_lock held.
559 int filter_commitrw_write(struct obd_export *exp, struct obdo *oa,
560 int objcount, struct obd_ioobj *obj,
561 struct niobuf_remote *nb, int niocount,
562 struct niobuf_local *res, struct obd_trans_info *oti,
565 struct niobuf_local *lnb;
566 struct filter_iobuf *iobuf = NULL;
567 struct lvfs_run_ctxt saved;
568 struct fsfilt_objinfo fso;
569 struct iattr iattr = { 0 };
570 struct inode *inode = res->dentry->d_inode;
571 unsigned long now = jiffies;
572 int i, err, cleanup_phase = 0;
573 struct obd_device *obd = exp->exp_obd;
574 struct filter_obd *fo = &obd->u.filter;
577 unsigned int qcids[MAXQUOTAS] = { oa->o_uid, oa->o_gid };
578 int rec_pending[MAXQUOTAS] = { 0, 0 }, quota_pages = 0;
581 LASSERT(oti != NULL);
582 LASSERT(objcount == 1);
583 LASSERT(current->journal_info == NULL);
588 iobuf = filter_iobuf_get(&obd->u.filter, oti);
590 GOTO(cleanup, rc = PTR_ERR(iobuf));
593 fso.fso_dentry = res->dentry;
594 fso.fso_bufcnt = obj->ioo_bufcnt;
596 iobuf->dr_ignore_quota = 0;
597 for (i = 0, lnb = res; i < niocount; i++, lnb++) {
599 __u32 flags = lnb->flags;
601 if (filter_range_is_mapped(inode, lnb->offset, lnb->len)) {
602 /* If overwriting an existing block,
603 * we don't need a grant */
604 if (!(flags & OBD_BRW_GRANTED) && lnb->rc == -ENOSPC)
610 if (lnb->rc) { /* ENOSPC, network RPC error, etc. */
611 CDEBUG(D_INODE, "Skipping [%d] == %d\n", i, lnb->rc);
615 LASSERT(PageLocked(lnb->page));
616 LASSERT(!PageWriteback(lnb->page));
618 /* since write & truncate are serialized by the i_alloc_sem,
619 * even partial truncate should not leave dirty pages in
621 LASSERT(!PageDirty(lnb->page));
623 SetPageUptodate(lnb->page);
625 err = filter_iobuf_add_page(obd, iobuf, inode, lnb->page);
628 total_size += lnb->len;
630 /* we expect these pages to be in offset order, but we'll
632 this_size = lnb->offset + lnb->len;
633 if (this_size > iattr.ia_size)
634 iattr.ia_size = this_size;
636 /* if one page is a write-back page from client cache and
637 * not from direct_io, or it's written by root, then mark
638 * the whole io request as ignore quota request, remote
639 * client can not break through quota. */
640 if (exp_connect_rmtclient(exp))
641 flags &= ~OBD_BRW_NOQUOTA;
642 if ((flags & OBD_BRW_NOQUOTA) ||
643 (flags & (OBD_BRW_FROM_GRANT | OBD_BRW_SYNC)) ==
645 iobuf->dr_ignore_quota = 1;
648 /* we try to get enough quota to write here, and let ldiskfs
649 * decide if it is out of quota or not b=14783 */
650 rc = lquota_chkquota(filter_quota_interface_ref, obd, exp, qcids,
651 rec_pending, quota_pages, oti, LQUOTA_FLAGS_BLK,
652 (void *)inode, obj->ioo_bufcnt);
656 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
661 LOCK_INODE_MUTEX(inode);
662 fsfilt_check_slow(obd, now, "i_mutex");
663 oti->oti_handle = fsfilt_brw_start(obd, objcount, &fso, niocount, res,
665 if (IS_ERR(oti->oti_handle)) {
666 UNLOCK_INODE_MUTEX(inode);
667 rc = PTR_ERR(oti->oti_handle);
668 CDEBUG(rc == -ENOSPC ? D_INODE : D_ERROR,
669 "error starting transaction: rc = %d\n", rc);
670 oti->oti_handle = NULL;
673 /* have to call fsfilt_commit() from this point on */
675 fsfilt_check_slow(obd, now, "brw_start");
677 i = OBD_MD_FLATIME | OBD_MD_FLMTIME | OBD_MD_FLCTIME;
679 /* If the inode still has SUID+SGID bits set (see filter_precreate())
680 * then we will accept the UID+GID if sent by the client for
681 * initializing the ownership of this inode. We only allow this to
682 * happen once (so clear these bits) and later only allow setattr. */
683 if (inode->i_mode & S_ISUID)
685 if (inode->i_mode & S_ISGID)
688 iattr_from_obdo(&iattr, oa, i);
689 if (iattr.ia_valid & (ATTR_UID | ATTR_GID)) {
692 CDEBUG(D_INODE, "update UID/GID to %lu/%lu\n",
693 (unsigned long)oa->o_uid, (unsigned long)oa->o_gid);
695 cfs_cap_raise(CFS_CAP_SYS_RESOURCE);
697 iattr.ia_valid |= ATTR_MODE;
698 iattr.ia_mode = inode->i_mode;
699 if (iattr.ia_valid & ATTR_UID)
700 iattr.ia_mode &= ~S_ISUID;
701 if (iattr.ia_valid & ATTR_GID)
702 iattr.ia_mode &= ~S_ISGID;
704 rc = filter_update_fidea(exp, inode, oti->oti_handle, oa);
706 /* To avoid problems with quotas, UID and GID must be set
707 * in the inode before filter_direct_io() - see bug 10357. */
708 save = iattr.ia_valid;
709 iattr.ia_valid &= (ATTR_UID | ATTR_GID);
710 rc = fsfilt_setattr(obd, res->dentry, oti->oti_handle,&iattr,0);
711 CDEBUG(D_QUOTA, "set uid(%u)/gid(%u) to ino(%lu). rc(%d)\n",
712 iattr.ia_uid, iattr.ia_gid, inode->i_ino, rc);
713 iattr.ia_valid = save & ~(ATTR_UID | ATTR_GID);
716 /* filter_direct_io drops i_mutex */
717 rc = filter_direct_io(OBD_BRW_WRITE, res->dentry, iobuf, exp, &iattr,
720 obdo_from_inode(oa, inode, NULL, rc == 0 ? FILTER_VALID_FLAGS : 0 |
721 OBD_MD_FLUID |OBD_MD_FLGID);
723 lquota_getflag(filter_quota_interface_ref, obd, oa);
725 fsfilt_check_slow(obd, now, "direct_io");
727 err = fsfilt_commit_wait(obd, inode, wait_handle);
729 CERROR("Failure to commit OST transaction (%d)?\n", err);
733 if (obd->obd_replayable && !rc)
734 LASSERTF(oti->oti_transno <= obd->obd_last_committed,
735 "oti_transno "LPU64" last_committed "LPU64"\n",
736 oti->oti_transno, obd->obd_last_committed);
738 fsfilt_check_slow(obd, now, "commitrw commit");
741 lquota_pending_commit(filter_quota_interface_ref, obd, qcids,
744 filter_grant_commit(exp, niocount, res);
746 switch (cleanup_phase) {
748 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
749 LASSERT(current->journal_info == NULL);
751 filter_iobuf_put(&obd->u.filter, iobuf, oti);
754 * lnb->page automatically returns back into per-thread page
760 /* trigger quota pre-acquire */
761 err = lquota_adjust(filter_quota_interface_ref, obd, qcids, NULL, rc,
763 CDEBUG(err ? D_ERROR : D_QUOTA, "filter adjust qunit! "
764 "(rc:%d, uid:%u, gid:%u)\n",
765 err, qcids[USRQUOTA], qcids[GRPQUOTA]);
766 if (qcids[USRQUOTA] != oa->o_uid || qcids[GRPQUOTA] != oa->o_gid) {
767 qcids[USRQUOTA] = oa->o_uid;
768 qcids[GRPQUOTA] = oa->o_gid;
769 err = lquota_adjust(filter_quota_interface_ref, obd, qcids,
770 NULL, rc, FSFILT_OP_CREATE);
771 CDEBUG(err ? D_ERROR : D_QUOTA, "filter adjust qunit! "
772 "(rc:%d, uid:%u, gid:%u)\n",
773 err, qcids[USRQUOTA], qcids[GRPQUOTA]);
776 for (i = 0, lnb = res; i < niocount; i++, lnb++) {
777 if (lnb->page == NULL)
781 /* If the write has failed, the page cache may
782 * not be consitent with what is on disk, so
783 * force pages to be reread next time it is
785 ClearPageUptodate(lnb->page);
787 LASSERT(PageLocked(lnb->page));
788 unlock_page(lnb->page);
790 page_cache_release(lnb->page);
796 if (fo->fo_writethrough_cache == 0 ||
797 i_size_read(inode) > fo->fo_readcache_max_filesize)
798 filter_release_cache(obd, obj, nb, inode);
799 up_read(&inode->i_alloc_sem);