4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2012, Whamcloud, Inc.
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 #include <linux/module.h>
44 #include <linux/pagemap.h> // XXX kill me soon
45 #include <linux/version.h>
46 #include <linux/buffer_head.h>
48 #define DEBUG_SUBSYSTEM S_FILTER
50 #include <obd_class.h>
51 #include <lustre_fsfilt.h>
52 #include "filter_internal.h"
54 /* 512byte block min */
55 #define MAX_BLOCKS_PER_PAGE (CFS_PAGE_SIZE / 512)
57 static void record_start_io(struct filter_iobuf *iobuf, int rw, int size,
58 struct obd_export *exp)
60 struct filter_obd *filter = iobuf->dr_filter;
62 cfs_atomic_inc(&iobuf->dr_numreqs);
64 if (rw == OBD_BRW_READ) {
65 cfs_atomic_inc(&filter->fo_r_in_flight);
66 lprocfs_oh_tally(&filter->fo_filter_stats.hist[BRW_R_RPC_HIST],
67 cfs_atomic_read(&filter->fo_r_in_flight));
68 lprocfs_oh_tally_log2(&filter->
69 fo_filter_stats.hist[BRW_R_DISK_IOSIZE],
71 if (exp->exp_nid_stats && exp->exp_nid_stats->nid_brw_stats) {
72 lprocfs_oh_tally(&exp->exp_nid_stats->nid_brw_stats->
74 cfs_atomic_read(&filter-> \
76 lprocfs_oh_tally_log2(&exp->exp_nid_stats->
77 nid_brw_stats->hist[BRW_R_DISK_IOSIZE],
81 cfs_atomic_inc(&filter->fo_w_in_flight);
82 lprocfs_oh_tally(&filter->fo_filter_stats.hist[BRW_W_RPC_HIST],
83 cfs_atomic_read(&filter->fo_w_in_flight));
84 lprocfs_oh_tally_log2(&filter->
85 fo_filter_stats.hist[BRW_W_DISK_IOSIZE],
87 if (exp->exp_nid_stats && exp->exp_nid_stats->nid_brw_stats) {
88 lprocfs_oh_tally(&exp->exp_nid_stats->nid_brw_stats->
90 cfs_atomic_read(&filter-> \
92 lprocfs_oh_tally_log2(&exp->exp_nid_stats->
93 nid_brw_stats->hist[BRW_W_DISK_IOSIZE],
99 static void record_finish_io(struct filter_iobuf *iobuf, int rw, int rc)
101 struct filter_obd *filter = iobuf->dr_filter;
103 /* CAVEAT EMPTOR: possibly in IRQ context
104 * DO NOT record procfs stats here!!! */
106 if (rw == OBD_BRW_READ)
107 cfs_atomic_dec(&filter->fo_r_in_flight);
109 cfs_atomic_dec(&filter->fo_w_in_flight);
111 if (cfs_atomic_dec_and_test(&iobuf->dr_numreqs))
112 cfs_waitq_signal(&iobuf->dr_wait);
115 #ifdef HAVE_BIO_ENDIO_2ARG
116 #define DIO_RETURN(a)
117 static void dio_complete_routine(struct bio *bio, int error)
119 #define DIO_RETURN(a) return(a)
120 static int dio_complete_routine(struct bio *bio, unsigned int done, int error)
123 struct filter_iobuf *iobuf = bio->bi_private;
127 /* CAVEAT EMPTOR: possibly in IRQ context
128 * DO NOT record procfs stats here!!! */
130 #ifdef HAVE_BIO_ENDIO_2ARG
131 /* The "bi_size" check was needed for kernels < 2.6.24 in order to
132 * handle the case where a SCSI request error caused this callback
133 * to be called before all of the biovecs had been processed.
134 * Without this check the server thread will hang. In newer kernels
135 * the bio_end_io routine is never called for partial completions,
136 * so this check is no longer needed. */
137 if (bio->bi_size) /* Not complete */
141 if (unlikely(iobuf == NULL)) {
142 CERROR("***** bio->bi_private is NULL! This should never "
143 "happen. Normally, I would crash here, but instead I "
144 "will dump the bio contents to the console. Please "
145 "report this to <http://bugs.whamcloud.com/>, along "
146 "with any interesting messages leading up to this point "
147 "(like SCSI errors, perhaps). Because bi_private is "
148 "NULL, I can't wake up the thread that initiated this "
149 "IO - you will probably have to reboot this node.\n");
150 CERROR("bi_next: %p, bi_flags: %lx, bi_rw: %lu, bi_vcnt: %d, "
151 "bi_idx: %d, bi->size: %d, bi_end_io: %p, bi_cnt: %d, "
152 "bi_private: %p\n", bio->bi_next, bio->bi_flags,
153 bio->bi_rw, bio->bi_vcnt, bio->bi_idx, bio->bi_size,
154 bio->bi_end_io, cfs_atomic_read(&bio->bi_cnt),
159 /* the check is outside of the cycle for performance reason -bzzz */
160 if (!cfs_test_bit(BIO_RW, &bio->bi_rw)) {
161 bio_for_each_segment(bvl, bio, i) {
162 if (likely(error == 0))
163 SetPageUptodate(bvl->bv_page);
164 LASSERT(PageLocked(bvl->bv_page));
165 ClearPageConstant(bvl->bv_page);
167 record_finish_io(iobuf, OBD_BRW_READ, error);
169 if (mapping_cap_page_constant_write(iobuf->dr_pages[0]->mapping)){
170 bio_for_each_segment(bvl, bio, i) {
171 ClearPageConstant(bvl->bv_page);
174 record_finish_io(iobuf, OBD_BRW_WRITE, error);
177 /* any real error is good enough -bzzz */
178 if (error != 0 && iobuf->dr_error == 0)
179 iobuf->dr_error = error;
181 /* Completed bios used to be chained off iobuf->dr_bios and freed in
182 * filter_clear_dreq(). It was then possible to exhaust the biovec-256
183 * mempool when serious on-disk fragmentation was encountered,
184 * deadlocking the OST. The bios are now released as soon as complete
185 * so the pool cannot be exhausted while IOs are competing. bug 10076 */
190 static int can_be_merged(struct bio *bio, sector_t sector)
197 size = bio->bi_size >> 9;
198 return bio->bi_sector + size == sector ? 1 : 0;
201 struct filter_iobuf *filter_alloc_iobuf(struct filter_obd *filter,
202 int rw, int num_pages)
204 struct filter_iobuf *iobuf;
206 LASSERTF(rw == OBD_BRW_WRITE || rw == OBD_BRW_READ, "%x\n", rw);
208 OBD_ALLOC(iobuf, sizeof(*iobuf));
212 OBD_ALLOC(iobuf->dr_pages, num_pages * sizeof(*iobuf->dr_pages));
213 if (iobuf->dr_pages == NULL)
216 OBD_ALLOC(iobuf->dr_blocks,
217 MAX_BLOCKS_PER_PAGE * num_pages * sizeof(*iobuf->dr_blocks));
218 if (iobuf->dr_blocks == NULL)
221 CFS_INIT_HLIST_NODE(&iobuf->dr_hlist);
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 LASSERT(cfs_hlist_unhashed(&iobuf->dr_hlist));
254 OBD_FREE(iobuf->dr_blocks,
255 MAX_BLOCKS_PER_PAGE * num_pages * sizeof(*iobuf->dr_blocks));
256 OBD_FREE(iobuf->dr_pages,
257 num_pages * sizeof(*iobuf->dr_pages));
261 void filter_iobuf_put(struct filter_obd *filter, struct filter_iobuf *iobuf,
262 struct obd_trans_info *oti)
264 int thread_id = (oti && oti->oti_thread) ?
265 oti->oti_thread->t_id : -1;
267 if (unlikely(thread_id < 0)) {
268 filter_free_iobuf(iobuf);
272 filter_clear_iobuf(iobuf);
275 int filter_iobuf_add_page(struct obd_device *obd, struct filter_iobuf *iobuf,
276 struct inode *inode, struct page *page)
278 LASSERT(iobuf->dr_npages < iobuf->dr_max_pages);
279 iobuf->dr_pages[iobuf->dr_npages++] = page;
284 int filter_do_bio(struct obd_export *exp, struct inode *inode,
285 struct filter_iobuf *iobuf, int rw)
287 struct obd_device *obd = exp->exp_obd;
288 int blocks_per_page = CFS_PAGE_SIZE >> inode->i_blkbits;
289 struct page **pages = iobuf->dr_pages;
290 int npages = iobuf->dr_npages;
291 unsigned long *blocks = iobuf->dr_blocks;
292 int total_blocks = npages * blocks_per_page;
293 int sector_bits = inode->i_sb->s_blocksize_bits - 9;
294 unsigned int blocksize = inode->i_sb->s_blocksize;
295 struct bio *bio = NULL;
297 unsigned long start_time = jiffies;
299 unsigned int page_offset;
308 LASSERT(iobuf->dr_npages == npages);
309 LASSERT(total_blocks <= OBDFILTER_CREATED_SCRATCHPAD_ENTRIES);
311 for (page_idx = 0, block_idx = 0;
313 page_idx++, block_idx += blocks_per_page) {
315 page = pages[page_idx];
316 LASSERT (block_idx + blocks_per_page <= total_blocks);
318 for (i = 0, page_offset = 0;
320 i += nblocks, page_offset += blocksize * nblocks) {
324 if (blocks[block_idx + i] == 0) { /* hole */
325 LASSERT(rw == OBD_BRW_READ);
326 memset(kmap(page) + page_offset, 0, blocksize);
331 sector = (sector_t)blocks[block_idx + i] << sector_bits;
333 /* Additional contiguous file blocks? */
334 while (i + nblocks < blocks_per_page &&
335 (sector + (nblocks << sector_bits)) ==
336 ((sector_t)blocks[block_idx + i + nblocks] <<
340 /* I only set the page to be constant only if it
341 * is mapped to a contiguous underlying disk block(s).
342 * It will then make sure the corresponding device
343 * cache of raid5 will be overwritten by this page.
345 if ((rw == OBD_BRW_WRITE) &&
346 (nblocks == blocks_per_page) &&
347 mapping_cap_page_constant_write(inode->i_mapping))
348 SetPageConstant(page);
351 can_be_merged(bio, sector) &&
352 bio_add_page(bio, page,
353 blocksize * nblocks, page_offset) != 0)
354 continue; /* added this frag OK */
357 struct request_queue *q =
358 bdev_get_queue(bio->bi_bdev);
360 /* Dang! I have to fragment this I/O */
361 CDEBUG(D_INODE, "bio++ sz %d vcnt %d(%d) "
362 "sectors %d(%d) psg %d(%d) hsg %d(%d) "
363 "sector %llu next %llu\n",
365 bio->bi_vcnt, bio->bi_max_vecs,
366 bio->bi_size >> 9, queue_max_sectors(q),
367 bio_phys_segments(q, bio),
368 queue_max_phys_segments(q),
369 bio_hw_segments(q, bio),
370 queue_max_hw_segments(q),
371 (unsigned long long)bio->bi_sector,
372 (unsigned long long)sector);
374 record_start_io(iobuf, rw, bio->bi_size, exp);
375 rc = fsfilt_send_bio(rw, obd, inode, bio);
377 CERROR("Can't send bio: %d\n", rc);
378 record_finish_io(iobuf, rw, rc);
384 /* allocate new bio, limited by max BIO size, b=9945 */
385 bio = bio_alloc(GFP_NOIO, min(BIO_MAX_PAGES,
386 (npages - page_idx) *
389 CERROR("Can't allocate bio %u*%u = %u pages\n",
390 (npages - page_idx), blocks_per_page,
391 (npages - page_idx) * blocks_per_page);
396 bio->bi_bdev = inode->i_sb->s_bdev;
397 bio->bi_sector = sector;
398 bio->bi_rw = (rw == OBD_BRW_READ ? READ : WRITE);
399 bio->bi_end_io = dio_complete_routine;
400 bio->bi_private = iobuf;
402 rc = bio_add_page(bio, page,
403 blocksize * nblocks, page_offset);
409 record_start_io(iobuf, rw, bio->bi_size, exp);
410 rc = fsfilt_send_bio(rw, obd, inode, bio);
415 CERROR("Can't send bio: %d\n", rc);
416 record_finish_io(iobuf, rw, rc);
421 cfs_wait_event(iobuf->dr_wait,
422 cfs_atomic_read(&iobuf->dr_numreqs) == 0);
424 if (rw == OBD_BRW_READ) {
425 lprocfs_oh_tally(&obd->u.filter.fo_filter_stats.
426 hist[BRW_R_DIO_FRAGS],
428 lprocfs_oh_tally_log2(&obd->u.filter.
429 fo_filter_stats.hist[BRW_R_IO_TIME],
430 jiffies - start_time);
431 if (exp->exp_nid_stats && exp->exp_nid_stats->nid_brw_stats) {
432 lprocfs_oh_tally(&exp->exp_nid_stats->nid_brw_stats->
433 hist[BRW_R_DIO_FRAGS],
435 lprocfs_oh_tally_log2(&exp->exp_nid_stats->
436 nid_brw_stats->hist[BRW_R_IO_TIME],
437 jiffies - start_time);
440 lprocfs_oh_tally(&obd->u.filter.fo_filter_stats.
441 hist[BRW_W_DIO_FRAGS], frags);
442 lprocfs_oh_tally_log2(&obd->u.filter.fo_filter_stats.
444 jiffies - start_time);
445 if (exp->exp_nid_stats && exp->exp_nid_stats->nid_brw_stats) {
446 lprocfs_oh_tally(&exp->exp_nid_stats->nid_brw_stats->
447 hist[BRW_W_DIO_FRAGS],
449 lprocfs_oh_tally_log2(&exp->exp_nid_stats->
450 nid_brw_stats->hist[BRW_W_IO_TIME],
451 jiffies - start_time);
456 rc = iobuf->dr_error;
460 /* Must be called with i_mutex taken for writes; this will drop it */
461 int filter_direct_io(int rw, struct dentry *dchild, struct filter_iobuf *iobuf,
462 struct obd_export *exp, struct iattr *attr,
463 struct obd_trans_info *oti, void **wait_handle)
465 struct obd_device *obd = exp->exp_obd;
466 struct inode *inode = dchild->d_inode;
467 int blocks_per_page = CFS_PAGE_SIZE >> inode->i_blkbits;
472 LASSERTF(iobuf->dr_npages <= iobuf->dr_max_pages, "%d,%d\n",
473 iobuf->dr_npages, iobuf->dr_max_pages);
474 LASSERT(iobuf->dr_npages <= OBDFILTER_CREATED_SCRATCHPAD_ENTRIES);
476 if (rw == OBD_BRW_READ) {
477 if (iobuf->dr_npages == 0)
482 LASSERTF(rw == OBD_BRW_WRITE, "%x\n", rw);
483 LASSERT(iobuf->dr_npages > 0);
485 mutex = &obd->u.filter.fo_alloc_lock;
488 if (rw == OBD_BRW_WRITE &&
489 OBD_FAIL_CHECK(OBD_FAIL_OST_MAPBLK_ENOSPC)) {
492 rc = fsfilt_map_inode_pages(obd, inode, iobuf->dr_pages,
493 iobuf->dr_npages, iobuf->dr_blocks,
494 obdfilter_created_scratchpad, create, mutex);
497 if (rw == OBD_BRW_WRITE) {
499 filter_tally(exp, iobuf->dr_pages,
500 iobuf->dr_npages, iobuf->dr_blocks,
502 if (attr->ia_size > i_size_read(inode))
503 attr->ia_valid |= ATTR_SIZE;
504 rc = fsfilt_setattr(obd, dchild,
505 oti->oti_handle, attr, 0);
508 mutex_unlock(&inode->i_mutex);
510 /* Force commit to make the just-deleted blocks
511 * reusable. LU-456 */
513 fsfilt_commit(obd, inode, oti->oti_handle, 1);
517 rc2 = filter_finish_transno(exp, inode, oti, 0, 0);
519 CERROR("can't close transaction: %d\n", rc2);
525 rc2 = fsfilt_commit_async(obd,inode,oti->oti_handle,
528 rc2 = fsfilt_commit(obd, inode, oti->oti_handle, 0);
533 } else if (rc == 0) {
534 filter_tally(exp, iobuf->dr_pages, iobuf->dr_npages,
535 iobuf->dr_blocks, blocks_per_page, 0);
538 RETURN(filter_do_bio(exp, inode, iobuf, rw));
541 /* See if there are unallocated parts in given file region */
542 static int filter_range_is_mapped(struct inode *inode, obd_size offset, int len)
544 sector_t (*fs_bmap)(struct address_space *, sector_t) =
545 inode->i_mapping->a_ops->bmap;
548 /* We can't know if we are overwriting or not */
552 offset >>= inode->i_blkbits;
553 len >>= inode->i_blkbits;
555 for (j = 0; j <= len; j++)
556 if (fs_bmap(inode->i_mapping, offset + j) == 0)
563 * interesting use cases on how it interacts with VM:
565 * - vm writeout -- shouldn't see our pages as we don't mark them dirty
566 * though vm can find partial page left dirty by truncate. in this
567 * usual writeout is used unless our write rewrite that page - then we
568 * drop PG_dirty with PG_lock held.
573 int filter_commitrw_write(struct obd_export *exp, struct obdo *oa,
574 int objcount, struct obd_ioobj *obj,
575 struct niobuf_remote *nb, int niocount,
576 struct niobuf_local *res, struct obd_trans_info *oti,
579 struct niobuf_local *lnb;
580 struct filter_iobuf *iobuf = NULL;
581 struct lvfs_run_ctxt saved;
582 struct fsfilt_objinfo fso;
583 struct iattr iattr = { 0 };
584 struct inode *inode = res->dentry->d_inode;
585 unsigned long now = jiffies;
586 int i, err, cleanup_phase = 0;
587 struct obd_device *obd = exp->exp_obd;
588 struct filter_obd *fo = &obd->u.filter;
589 void *wait_handle = NULL;
591 int sync_journal_commit = obd->u.filter.fo_syncjournal;
595 LASSERT(oti != NULL);
596 LASSERT(objcount == 1);
597 LASSERT(current->journal_info == NULL);
602 iobuf = filter_iobuf_get(&obd->u.filter, oti);
604 GOTO(cleanup, rc = PTR_ERR(iobuf));
607 fso.fso_dentry = res->dentry;
608 fso.fso_bufcnt = obj->ioo_bufcnt;
610 iobuf->dr_ignore_quota = 0;
611 for (i = 0, lnb = res; i < niocount; i++, lnb++) {
613 __u32 flags = lnb->flags;
615 if (filter_range_is_mapped(inode, lnb->lnb_file_offset,
617 /* If overwriting an existing block,
618 * we don't need a grant */
619 if (!(flags & OBD_BRW_GRANTED) && lnb->rc == -ENOSPC)
623 if (lnb->rc) { /* ENOSPC, network RPC error, etc. */
624 CDEBUG(D_INODE, "Skipping [%d] == %d\n", i, lnb->rc);
628 LASSERT(PageLocked(lnb->page));
629 LASSERT(!PageWriteback(lnb->page));
631 /* since write & truncate are serialized by the i_alloc_sem,
632 * even partial truncate should not leave dirty pages in
634 LASSERT(!PageDirty(lnb->page));
636 SetPageUptodate(lnb->page);
638 err = filter_iobuf_add_page(obd, iobuf, inode, lnb->page);
641 total_size += lnb->len;
643 /* we expect these pages to be in offset order, but we'll
645 this_size = lnb->lnb_file_offset + lnb->len;
646 if (this_size > iattr.ia_size)
647 iattr.ia_size = this_size;
649 /* if one page is a write-back page from client cache and
650 * not from direct_io, or it's written by root, then mark
651 * the whole io request as ignore quota request, remote
652 * client can not break through quota. */
653 if (exp_connect_rmtclient(exp))
654 flags &= ~OBD_BRW_NOQUOTA;
655 if ((flags & OBD_BRW_NOQUOTA) ||
656 (flags & (OBD_BRW_FROM_GRANT | OBD_BRW_SYNC)) ==
658 iobuf->dr_ignore_quota = 1;
660 if (!(lnb->flags & OBD_BRW_ASYNC)) {
661 sync_journal_commit = 1;
665 if (OBD_FAIL_CHECK(OBD_FAIL_OST_DQACQ_NET))
666 GOTO(cleanup, rc = -EINPROGRESS);
668 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
672 mutex_lock(&inode->i_mutex);
673 fsfilt_check_slow(obd, now, "i_mutex");
674 oti->oti_handle = fsfilt_brw_start(obd, objcount, &fso, niocount, res,
676 if (IS_ERR(oti->oti_handle)) {
677 mutex_unlock(&inode->i_mutex);
678 rc = PTR_ERR(oti->oti_handle);
679 CDEBUG(rc == -ENOSPC ? D_INODE : D_ERROR,
680 "error starting transaction: rc = %d\n", rc);
681 oti->oti_handle = NULL;
684 /* have to call fsfilt_commit() from this point on */
686 fsfilt_check_slow(obd, now, "brw_start");
688 /* Locking order: i_mutex -> journal_lock -> dqptr_sem. LU-952 */
689 ll_vfs_dq_init(inode);
691 i = OBD_MD_FLATIME | OBD_MD_FLMTIME | OBD_MD_FLCTIME;
693 /* If the inode still has SUID+SGID bits set (see filter_precreate())
694 * then we will accept the UID+GID if sent by the client for
695 * initializing the ownership of this inode. We only allow this to
696 * happen once (so clear these bits) and later only allow setattr. */
697 if (inode->i_mode & S_ISUID)
699 if (inode->i_mode & S_ISGID)
702 iattr_from_obdo(&iattr, oa, i);
703 if (iattr.ia_valid & (ATTR_UID | ATTR_GID)) {
706 CDEBUG(D_INODE, "update UID/GID to %lu/%lu\n",
707 (unsigned long)oa->o_uid, (unsigned long)oa->o_gid);
709 cfs_cap_raise(CFS_CAP_SYS_RESOURCE);
711 iattr.ia_valid |= ATTR_MODE;
712 iattr.ia_mode = inode->i_mode;
713 if (iattr.ia_valid & ATTR_UID)
714 iattr.ia_mode &= ~S_ISUID;
715 if (iattr.ia_valid & ATTR_GID)
716 iattr.ia_mode &= ~S_ISGID;
718 rc = filter_update_fidea(exp, inode, oti->oti_handle, oa);
720 /* To avoid problems with quotas, UID and GID must be set
721 * in the inode before filter_direct_io() - see bug 10357. */
722 save = iattr.ia_valid;
723 iattr.ia_valid &= (ATTR_UID | ATTR_GID);
724 rc = fsfilt_setattr(obd, res->dentry, oti->oti_handle,&iattr,0);
725 CDEBUG(D_QUOTA, "set uid(%u)/gid(%u) to ino(%lu). rc(%d)\n",
726 iattr.ia_uid, iattr.ia_gid, inode->i_ino, rc);
727 iattr.ia_valid = save & ~(ATTR_UID | ATTR_GID);
730 CDEBUG(D_INODE, "FID "DFID" to write: s="LPU64" m="LPU64" a="LPU64
731 " c="LPU64" b="LPU64"\n",
732 oa->o_id, (__u32)oa->o_seq, (__u32)oa->o_seq,
733 oa->o_size, oa->o_mtime, oa->o_atime, oa->o_ctime,
735 /* filter_direct_io drops i_mutex */
736 rc = filter_direct_io(OBD_BRW_WRITE, res->dentry, iobuf, exp, &iattr,
737 oti, sync_journal_commit ? &wait_handle : NULL);
738 if (rc == -ENOSPC && retries++ < 3) {
739 CDEBUG(D_INODE, "retry after force commit, retries:%d\n",
741 oti->oti_handle = NULL;
742 fsfilt_check_slow(obd, now, "direct_io");
746 obdo_from_inode(oa, inode, (rc == 0 ? FILTER_VALID_FLAGS : 0) |
747 OBD_MD_FLUID | OBD_MD_FLGID);
749 CDEBUG(D_INODE, "FID "DFID" after write: s="LPU64" m="LPU64" a="LPU64
750 " c="LPU64" b="LPU64"\n",
751 oa->o_id, (__u32)oa->o_seq, (__u32)oa->o_seq,
752 oa->o_size, oa->o_mtime, oa->o_atime, oa->o_ctime,
755 fsfilt_check_slow(obd, now, "direct_io");
758 err = fsfilt_commit_wait(obd, inode, wait_handle);
763 CERROR("Failure to commit OST transaction (%d)?\n", err);
768 /* In rare cases fsfilt_commit_wait() will wake up and return after
769 * the transaction has finished its work and updated j_commit_sequence
770 * but the commit callbacks have not been run yet. Wait here until
771 * that is finished so that clients requesting sync IO don't see the
772 * reply transno < last_committed. LU-753 */
773 if (unlikely(obd->obd_replayable && !rc && wait_handle &&
774 oti->oti_transno > obd->obd_last_committed)) {
776 struct l_wait_info lwi =
777 LWI_TIMEOUT_INTERVAL(cfs_time_seconds(5),
778 (cfs_duration_t)((HZ + 4)/5),
782 oti->oti_transno <= obd->obd_last_committed,
785 /* commit callback isn't done after waiting for 5 secs ? */
786 if (unlikely(oti->oti_transno > obd->obd_last_committed))
787 CERROR("transno:"LPU64" > last_committed:"LPU64"\n",
788 oti->oti_transno, obd->obd_last_committed);
791 fsfilt_check_slow(obd, now, "commitrw commit");
794 filter_grant_commit(exp, niocount, res);
796 switch (cleanup_phase) {
798 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
799 LASSERT(current->journal_info == NULL);
801 filter_iobuf_put(&obd->u.filter, iobuf, oti);
804 * lnb->page automatically returns back into per-thread page
810 for (i = 0, lnb = res; i < niocount; i++, lnb++) {
811 if (lnb->page == NULL)
815 /* If the write has failed, the page cache may
816 * not be consitent with what is on disk, so
817 * force pages to be reread next time it is
819 ClearPageUptodate(lnb->page);
821 LASSERT(PageLocked(lnb->page));
822 unlock_page(lnb->page);
824 page_cache_release(lnb->page);
830 if (fo->fo_writethrough_cache == 0 ||
831 i_size_read(inode) > fo->fo_readcache_max_filesize)
832 filter_release_cache(obd, obj, nb, inode);
833 up_read(&inode->i_alloc_sem);