2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
5 * This copyrighted material is made available to anyone wishing to use,
6 * modify, copy, or redistribute it subject to the terms and conditions
7 * of the GNU General Public License version 2.
10 #include <linux/sched.h>
11 #include <linux/slab.h>
12 #include <linux/spinlock.h>
13 #include <linux/completion.h>
14 #include <linux/buffer_head.h>
15 #include <linux/mempool.h>
16 #include <linux/gfs2_ondisk.h>
17 #include <linux/bio.h>
19 #include <linux/list_sort.h>
33 #include "trace_gfs2.h"
36 * gfs2_pin - Pin a buffer in memory
37 * @sdp: The superblock
38 * @bh: The buffer to be pinned
40 * The log lock must be held when calling this function
42 void gfs2_pin(struct gfs2_sbd
*sdp
, struct buffer_head
*bh
)
44 struct gfs2_bufdata
*bd
;
46 BUG_ON(!current
->journal_info
);
48 clear_buffer_dirty(bh
);
49 if (test_set_buffer_pinned(bh
))
50 gfs2_assert_withdraw(sdp
, 0);
51 if (!buffer_uptodate(bh
))
52 gfs2_io_error_bh_wd(sdp
, bh
);
54 /* If this buffer is in the AIL and it has already been written
55 * to in-place disk block, remove it from the AIL.
57 spin_lock(&sdp
->sd_ail_lock
);
59 list_move(&bd
->bd_ail_st_list
, &bd
->bd_tr
->tr_ail2_list
);
60 spin_unlock(&sdp
->sd_ail_lock
);
62 atomic_inc(&sdp
->sd_log_pinned
);
63 trace_gfs2_pin(bd
, 1);
66 static bool buffer_is_rgrp(const struct gfs2_bufdata
*bd
)
68 return bd
->bd_gl
->gl_name
.ln_type
== LM_TYPE_RGRP
;
71 static void maybe_release_space(struct gfs2_bufdata
*bd
)
73 struct gfs2_glock
*gl
= bd
->bd_gl
;
74 struct gfs2_sbd
*sdp
= gl
->gl_name
.ln_sbd
;
75 struct gfs2_rgrpd
*rgd
= gfs2_glock2rgrp(gl
);
76 unsigned int index
= bd
->bd_bh
->b_blocknr
- gl
->gl_name
.ln_number
;
77 struct gfs2_bitmap
*bi
= rgd
->rd_bits
+ index
;
79 if (bi
->bi_clone
== NULL
)
81 if (sdp
->sd_args
.ar_discard
)
82 gfs2_rgrp_send_discards(sdp
, rgd
->rd_data0
, bd
->bd_bh
, bi
, 1, NULL
);
83 memcpy(bi
->bi_clone
+ bi
->bi_offset
,
84 bd
->bd_bh
->b_data
+ bi
->bi_offset
, bi
->bi_bytes
);
85 clear_bit(GBF_FULL
, &bi
->bi_flags
);
86 rgd
->rd_free_clone
= rgd
->rd_free
;
87 rgd
->rd_extfail_pt
= rgd
->rd_free
;
91 * gfs2_unpin - Unpin a buffer
92 * @sdp: the filesystem the buffer belongs to
93 * @bh: The buffer to unpin
95 * @flags: The inode dirty flags
99 static void gfs2_unpin(struct gfs2_sbd
*sdp
, struct buffer_head
*bh
,
100 struct gfs2_trans
*tr
)
102 struct gfs2_bufdata
*bd
= bh
->b_private
;
104 BUG_ON(!buffer_uptodate(bh
));
105 BUG_ON(!buffer_pinned(bh
));
108 mark_buffer_dirty(bh
);
109 clear_buffer_pinned(bh
);
111 if (buffer_is_rgrp(bd
))
112 maybe_release_space(bd
);
114 spin_lock(&sdp
->sd_ail_lock
);
116 list_del(&bd
->bd_ail_st_list
);
119 struct gfs2_glock
*gl
= bd
->bd_gl
;
120 list_add(&bd
->bd_ail_gl_list
, &gl
->gl_ail_list
);
121 atomic_inc(&gl
->gl_ail_count
);
124 list_add(&bd
->bd_ail_st_list
, &tr
->tr_ail1_list
);
125 spin_unlock(&sdp
->sd_ail_lock
);
127 clear_bit(GLF_LFLUSH
, &bd
->bd_gl
->gl_flags
);
128 trace_gfs2_pin(bd
, 0);
130 atomic_dec(&sdp
->sd_log_pinned
);
133 static void gfs2_log_incr_head(struct gfs2_sbd
*sdp
)
135 BUG_ON((sdp
->sd_log_flush_head
== sdp
->sd_log_tail
) &&
136 (sdp
->sd_log_flush_head
!= sdp
->sd_log_head
));
138 if (++sdp
->sd_log_flush_head
== sdp
->sd_jdesc
->jd_blocks
)
139 sdp
->sd_log_flush_head
= 0;
142 u64
gfs2_log_bmap(struct gfs2_sbd
*sdp
)
144 unsigned int lbn
= sdp
->sd_log_flush_head
;
145 struct gfs2_journal_extent
*je
;
148 list_for_each_entry(je
, &sdp
->sd_jdesc
->extent_list
, list
) {
149 if ((lbn
>= je
->lblock
) && (lbn
< (je
->lblock
+ je
->blocks
))) {
150 block
= je
->dblock
+ lbn
- je
->lblock
;
151 gfs2_log_incr_head(sdp
);
160 * gfs2_end_log_write_bh - end log write of pagecache data with buffers
161 * @sdp: The superblock
163 * @error: The i/o status
165 * This finds the relevant buffers and unlocks them and sets the
166 * error flag according to the status of the i/o request. This is
167 * used when the log is writing data which has an in-place version
168 * that is pinned in the pagecache.
171 static void gfs2_end_log_write_bh(struct gfs2_sbd
*sdp
, struct bio_vec
*bvec
,
174 struct buffer_head
*bh
, *next
;
175 struct page
*page
= bvec
->bv_page
;
178 bh
= page_buffers(page
);
180 while (bh_offset(bh
) < bvec
->bv_offset
)
181 bh
= bh
->b_this_page
;
184 mark_buffer_write_io_error(bh
);
186 next
= bh
->b_this_page
;
194 * gfs2_end_log_write - end of i/o to the log
196 * @error: Status of i/o request
198 * Each bio_vec contains either data from the pagecache or data
199 * relating to the log itself. Here we iterate over the bio_vec
200 * array, processing both kinds of data.
204 static void gfs2_end_log_write(struct bio
*bio
)
206 struct gfs2_sbd
*sdp
= bio
->bi_private
;
207 struct bio_vec
*bvec
;
211 if (bio
->bi_status
) {
212 fs_err(sdp
, "Error %d writing to journal, jid=%u\n",
213 bio
->bi_status
, sdp
->sd_jdesc
->jd_jid
);
214 wake_up(&sdp
->sd_logd_waitq
);
217 bio_for_each_segment_all(bvec
, bio
, i
) {
218 page
= bvec
->bv_page
;
219 if (page_has_buffers(page
))
220 gfs2_end_log_write_bh(sdp
, bvec
, bio
->bi_status
);
222 mempool_free(page
, gfs2_page_pool
);
226 if (atomic_dec_and_test(&sdp
->sd_log_in_flight
))
227 wake_up(&sdp
->sd_log_flush_wait
);
231 * gfs2_log_submit_bio - Submit any pending log bio
232 * @biop: Address of the bio pointer
234 * @op_flags: req_flag_bits
236 * Submit any pending part-built or full bio to the block device. If
237 * there is no pending bio, then this is a no-op.
240 void gfs2_log_submit_bio(struct bio
**biop
, int op
, int op_flags
)
242 struct bio
*bio
= *biop
;
244 struct gfs2_sbd
*sdp
= bio
->bi_private
;
245 atomic_inc(&sdp
->sd_log_in_flight
);
246 bio_set_op_attrs(bio
, op
, op_flags
);
253 * gfs2_log_alloc_bio - Allocate a bio
254 * @sdp: The super block
255 * @blkno: The device block number we want to write to
256 * @end_io: The bi_end_io callback
258 * Allocate a new bio, initialize it with the given parameters and return it.
260 * Returns: The newly allocated bio
263 static struct bio
*gfs2_log_alloc_bio(struct gfs2_sbd
*sdp
, u64 blkno
,
264 bio_end_io_t
*end_io
)
266 struct super_block
*sb
= sdp
->sd_vfs
;
267 struct bio
*bio
= bio_alloc(GFP_NOIO
, BIO_MAX_PAGES
);
269 bio
->bi_iter
.bi_sector
= blkno
* (sb
->s_blocksize
>> 9);
270 bio_set_dev(bio
, sb
->s_bdev
);
271 bio
->bi_end_io
= end_io
;
272 bio
->bi_private
= sdp
;
278 * gfs2_log_get_bio - Get cached log bio, or allocate a new one
279 * @sdp: The super block
280 * @blkno: The device block number we want to write to
281 * @bio: The bio to get or allocate
283 * @end_io: The bi_end_io callback
284 * @flush: Always flush the current bio and allocate a new one?
286 * If there is a cached bio, then if the next block number is sequential
287 * with the previous one, return it, otherwise flush the bio to the
288 * device. If there is no cached bio, or we just flushed it, then
289 * allocate a new one.
291 * Returns: The bio to use for log writes
294 static struct bio
*gfs2_log_get_bio(struct gfs2_sbd
*sdp
, u64 blkno
,
295 struct bio
**biop
, int op
,
296 bio_end_io_t
*end_io
, bool flush
)
298 struct bio
*bio
= *biop
;
303 nblk
= bio_end_sector(bio
);
304 nblk
>>= sdp
->sd_fsb2bb_shift
;
305 if (blkno
== nblk
&& !flush
)
307 gfs2_log_submit_bio(biop
, op
, 0);
310 *biop
= gfs2_log_alloc_bio(sdp
, blkno
, end_io
);
315 * gfs2_log_write - write to log
316 * @sdp: the filesystem
317 * @page: the page to write
318 * @size: the size of the data to write
319 * @offset: the offset within the page
320 * @blkno: block number of the log entry
322 * Try and add the page segment to the current bio. If that fails,
323 * submit the current bio to the device and create a new one, and
324 * then add the page segment to that.
327 void gfs2_log_write(struct gfs2_sbd
*sdp
, struct page
*page
,
328 unsigned size
, unsigned offset
, u64 blkno
)
333 bio
= gfs2_log_get_bio(sdp
, blkno
, &sdp
->sd_log_bio
, REQ_OP_WRITE
,
334 gfs2_end_log_write
, false);
335 ret
= bio_add_page(bio
, page
, size
, offset
);
337 bio
= gfs2_log_get_bio(sdp
, blkno
, &sdp
->sd_log_bio
,
338 REQ_OP_WRITE
, gfs2_end_log_write
, true);
339 ret
= bio_add_page(bio
, page
, size
, offset
);
345 * gfs2_log_write_bh - write a buffer's content to the log
346 * @sdp: The super block
347 * @bh: The buffer pointing to the in-place location
349 * This writes the content of the buffer to the next available location
350 * in the log. The buffer will be unlocked once the i/o to the log has
354 static void gfs2_log_write_bh(struct gfs2_sbd
*sdp
, struct buffer_head
*bh
)
356 gfs2_log_write(sdp
, bh
->b_page
, bh
->b_size
, bh_offset(bh
),
361 * gfs2_log_write_page - write one block stored in a page, into the log
362 * @sdp: The superblock
363 * @page: The struct page
365 * This writes the first block-sized part of the page into the log. Note
366 * that the page must have been allocated from the gfs2_page_pool mempool
367 * and that after this has been called, ownership has been transferred and
368 * the page may be freed at any time.
371 void gfs2_log_write_page(struct gfs2_sbd
*sdp
, struct page
*page
)
373 struct super_block
*sb
= sdp
->sd_vfs
;
374 gfs2_log_write(sdp
, page
, sb
->s_blocksize
, 0,
378 static struct page
*gfs2_get_log_desc(struct gfs2_sbd
*sdp
, u32 ld_type
,
379 u32 ld_length
, u32 ld_data1
)
381 struct page
*page
= mempool_alloc(gfs2_page_pool
, GFP_NOIO
);
382 struct gfs2_log_descriptor
*ld
= page_address(page
);
384 ld
->ld_header
.mh_magic
= cpu_to_be32(GFS2_MAGIC
);
385 ld
->ld_header
.mh_type
= cpu_to_be32(GFS2_METATYPE_LD
);
386 ld
->ld_header
.mh_format
= cpu_to_be32(GFS2_FORMAT_LD
);
387 ld
->ld_type
= cpu_to_be32(ld_type
);
388 ld
->ld_length
= cpu_to_be32(ld_length
);
389 ld
->ld_data1
= cpu_to_be32(ld_data1
);
394 static void gfs2_check_magic(struct buffer_head
*bh
)
399 clear_buffer_escaped(bh
);
400 kaddr
= kmap_atomic(bh
->b_page
);
401 ptr
= kaddr
+ bh_offset(bh
);
402 if (*ptr
== cpu_to_be32(GFS2_MAGIC
))
403 set_buffer_escaped(bh
);
404 kunmap_atomic(kaddr
);
407 static int blocknr_cmp(void *priv
, struct list_head
*a
, struct list_head
*b
)
409 struct gfs2_bufdata
*bda
, *bdb
;
411 bda
= list_entry(a
, struct gfs2_bufdata
, bd_list
);
412 bdb
= list_entry(b
, struct gfs2_bufdata
, bd_list
);
414 if (bda
->bd_bh
->b_blocknr
< bdb
->bd_bh
->b_blocknr
)
416 if (bda
->bd_bh
->b_blocknr
> bdb
->bd_bh
->b_blocknr
)
421 static void gfs2_before_commit(struct gfs2_sbd
*sdp
, unsigned int limit
,
422 unsigned int total
, struct list_head
*blist
,
425 struct gfs2_log_descriptor
*ld
;
426 struct gfs2_bufdata
*bd1
= NULL
, *bd2
;
433 list_sort(NULL
, blist
, blocknr_cmp
);
434 bd1
= bd2
= list_prepare_entry(bd1
, blist
, bd_list
);
439 gfs2_log_unlock(sdp
);
440 page
= gfs2_get_log_desc(sdp
,
441 is_databuf
? GFS2_LOG_DESC_JDATA
:
442 GFS2_LOG_DESC_METADATA
, num
+ 1, num
);
443 ld
= page_address(page
);
445 ptr
= (__be64
*)(ld
+ 1);
448 list_for_each_entry_continue(bd1
, blist
, bd_list
) {
449 *ptr
++ = cpu_to_be64(bd1
->bd_bh
->b_blocknr
);
451 gfs2_check_magic(bd1
->bd_bh
);
452 *ptr
++ = cpu_to_be64(buffer_escaped(bd1
->bd_bh
) ? 1 : 0);
458 gfs2_log_unlock(sdp
);
459 gfs2_log_write_page(sdp
, page
);
463 list_for_each_entry_continue(bd2
, blist
, bd_list
) {
465 gfs2_log_unlock(sdp
);
466 lock_buffer(bd2
->bd_bh
);
468 if (buffer_escaped(bd2
->bd_bh
)) {
470 page
= mempool_alloc(gfs2_page_pool
, GFP_NOIO
);
471 ptr
= page_address(page
);
472 kaddr
= kmap_atomic(bd2
->bd_bh
->b_page
);
473 memcpy(ptr
, kaddr
+ bh_offset(bd2
->bd_bh
),
475 kunmap_atomic(kaddr
);
477 clear_buffer_escaped(bd2
->bd_bh
);
478 unlock_buffer(bd2
->bd_bh
);
480 gfs2_log_write_page(sdp
, page
);
482 gfs2_log_write_bh(sdp
, bd2
->bd_bh
);
492 gfs2_log_unlock(sdp
);
495 static void buf_lo_before_commit(struct gfs2_sbd
*sdp
, struct gfs2_trans
*tr
)
497 unsigned int limit
= buf_limit(sdp
); /* 503 for 4k blocks */
501 nbuf
= tr
->tr_num_buf_new
- tr
->tr_num_buf_rm
;
502 gfs2_before_commit(sdp
, limit
, nbuf
, &tr
->tr_buf
, 0);
505 static void buf_lo_after_commit(struct gfs2_sbd
*sdp
, struct gfs2_trans
*tr
)
507 struct list_head
*head
;
508 struct gfs2_bufdata
*bd
;
514 while (!list_empty(head
)) {
515 bd
= list_entry(head
->next
, struct gfs2_bufdata
, bd_list
);
516 list_del_init(&bd
->bd_list
);
517 gfs2_unpin(sdp
, bd
->bd_bh
, tr
);
521 static void buf_lo_before_scan(struct gfs2_jdesc
*jd
,
522 struct gfs2_log_header_host
*head
, int pass
)
527 jd
->jd_found_blocks
= 0;
528 jd
->jd_replayed_blocks
= 0;
531 static int buf_lo_scan_elements(struct gfs2_jdesc
*jd
, unsigned int start
,
532 struct gfs2_log_descriptor
*ld
, __be64
*ptr
,
535 struct gfs2_inode
*ip
= GFS2_I(jd
->jd_inode
);
536 struct gfs2_sbd
*sdp
= GFS2_SB(jd
->jd_inode
);
537 struct gfs2_glock
*gl
= ip
->i_gl
;
538 unsigned int blks
= be32_to_cpu(ld
->ld_data1
);
539 struct buffer_head
*bh_log
, *bh_ip
;
543 if (pass
!= 1 || be32_to_cpu(ld
->ld_type
) != GFS2_LOG_DESC_METADATA
)
546 gfs2_replay_incr_blk(jd
, &start
);
548 for (; blks
; gfs2_replay_incr_blk(jd
, &start
), blks
--) {
549 blkno
= be64_to_cpu(*ptr
++);
551 jd
->jd_found_blocks
++;
553 if (gfs2_revoke_check(jd
, blkno
, start
))
556 error
= gfs2_replay_read_block(jd
, start
, &bh_log
);
560 bh_ip
= gfs2_meta_new(gl
, blkno
);
561 memcpy(bh_ip
->b_data
, bh_log
->b_data
, bh_log
->b_size
);
563 if (gfs2_meta_check(sdp
, bh_ip
))
566 mark_buffer_dirty(bh_ip
);
574 jd
->jd_replayed_blocks
++;
581 * gfs2_meta_sync - Sync all buffers associated with a glock
586 static void gfs2_meta_sync(struct gfs2_glock
*gl
)
588 struct address_space
*mapping
= gfs2_glock2aspace(gl
);
589 struct gfs2_sbd
*sdp
= gl
->gl_name
.ln_sbd
;
593 mapping
= &sdp
->sd_aspace
;
595 filemap_fdatawrite(mapping
);
596 error
= filemap_fdatawait(mapping
);
599 gfs2_io_error(gl
->gl_name
.ln_sbd
);
602 static void buf_lo_after_scan(struct gfs2_jdesc
*jd
, int error
, int pass
)
604 struct gfs2_inode
*ip
= GFS2_I(jd
->jd_inode
);
605 struct gfs2_sbd
*sdp
= GFS2_SB(jd
->jd_inode
);
608 gfs2_meta_sync(ip
->i_gl
);
614 gfs2_meta_sync(ip
->i_gl
);
616 fs_info(sdp
, "jid=%u: Replayed %u of %u blocks\n",
617 jd
->jd_jid
, jd
->jd_replayed_blocks
, jd
->jd_found_blocks
);
620 static void revoke_lo_before_commit(struct gfs2_sbd
*sdp
, struct gfs2_trans
*tr
)
622 struct gfs2_meta_header
*mh
;
624 struct list_head
*head
= &sdp
->sd_log_le_revoke
;
625 struct gfs2_bufdata
*bd
;
629 gfs2_write_revokes(sdp
);
630 if (!sdp
->sd_log_num_revoke
)
633 length
= gfs2_struct2blk(sdp
, sdp
->sd_log_num_revoke
, sizeof(u64
));
634 page
= gfs2_get_log_desc(sdp
, GFS2_LOG_DESC_REVOKE
, length
, sdp
->sd_log_num_revoke
);
635 offset
= sizeof(struct gfs2_log_descriptor
);
637 list_for_each_entry(bd
, head
, bd_list
) {
638 sdp
->sd_log_num_revoke
--;
640 if (offset
+ sizeof(u64
) > sdp
->sd_sb
.sb_bsize
) {
642 gfs2_log_write_page(sdp
, page
);
643 page
= mempool_alloc(gfs2_page_pool
, GFP_NOIO
);
644 mh
= page_address(page
);
646 mh
->mh_magic
= cpu_to_be32(GFS2_MAGIC
);
647 mh
->mh_type
= cpu_to_be32(GFS2_METATYPE_LB
);
648 mh
->mh_format
= cpu_to_be32(GFS2_FORMAT_LB
);
649 offset
= sizeof(struct gfs2_meta_header
);
652 *(__be64
*)(page_address(page
) + offset
) = cpu_to_be64(bd
->bd_blkno
);
653 offset
+= sizeof(u64
);
655 gfs2_assert_withdraw(sdp
, !sdp
->sd_log_num_revoke
);
657 gfs2_log_write_page(sdp
, page
);
660 static void revoke_lo_after_commit(struct gfs2_sbd
*sdp
, struct gfs2_trans
*tr
)
662 struct list_head
*head
= &sdp
->sd_log_le_revoke
;
663 struct gfs2_bufdata
*bd
;
664 struct gfs2_glock
*gl
;
666 while (!list_empty(head
)) {
667 bd
= list_entry(head
->next
, struct gfs2_bufdata
, bd_list
);
668 list_del_init(&bd
->bd_list
);
670 atomic_dec(&gl
->gl_revokes
);
671 clear_bit(GLF_LFLUSH
, &gl
->gl_flags
);
672 kmem_cache_free(gfs2_bufdata_cachep
, bd
);
676 static void revoke_lo_before_scan(struct gfs2_jdesc
*jd
,
677 struct gfs2_log_header_host
*head
, int pass
)
682 jd
->jd_found_revokes
= 0;
683 jd
->jd_replay_tail
= head
->lh_tail
;
686 static int revoke_lo_scan_elements(struct gfs2_jdesc
*jd
, unsigned int start
,
687 struct gfs2_log_descriptor
*ld
, __be64
*ptr
,
690 struct gfs2_sbd
*sdp
= GFS2_SB(jd
->jd_inode
);
691 unsigned int blks
= be32_to_cpu(ld
->ld_length
);
692 unsigned int revokes
= be32_to_cpu(ld
->ld_data1
);
693 struct buffer_head
*bh
;
699 if (pass
!= 0 || be32_to_cpu(ld
->ld_type
) != GFS2_LOG_DESC_REVOKE
)
702 offset
= sizeof(struct gfs2_log_descriptor
);
704 for (; blks
; gfs2_replay_incr_blk(jd
, &start
), blks
--) {
705 error
= gfs2_replay_read_block(jd
, start
, &bh
);
710 gfs2_metatype_check(sdp
, bh
, GFS2_METATYPE_LB
);
712 while (offset
+ sizeof(u64
) <= sdp
->sd_sb
.sb_bsize
) {
713 blkno
= be64_to_cpu(*(__be64
*)(bh
->b_data
+ offset
));
715 error
= gfs2_revoke_add(jd
, blkno
, start
);
721 jd
->jd_found_revokes
++;
725 offset
+= sizeof(u64
);
729 offset
= sizeof(struct gfs2_meta_header
);
736 static void revoke_lo_after_scan(struct gfs2_jdesc
*jd
, int error
, int pass
)
738 struct gfs2_sbd
*sdp
= GFS2_SB(jd
->jd_inode
);
741 gfs2_revoke_clean(jd
);
747 fs_info(sdp
, "jid=%u: Found %u revoke tags\n",
748 jd
->jd_jid
, jd
->jd_found_revokes
);
750 gfs2_revoke_clean(jd
);
754 * databuf_lo_before_commit - Scan the data buffers, writing as we go
758 static void databuf_lo_before_commit(struct gfs2_sbd
*sdp
, struct gfs2_trans
*tr
)
760 unsigned int limit
= databuf_limit(sdp
);
764 nbuf
= tr
->tr_num_databuf_new
- tr
->tr_num_databuf_rm
;
765 gfs2_before_commit(sdp
, limit
, nbuf
, &tr
->tr_databuf
, 1);
768 static int databuf_lo_scan_elements(struct gfs2_jdesc
*jd
, unsigned int start
,
769 struct gfs2_log_descriptor
*ld
,
770 __be64
*ptr
, int pass
)
772 struct gfs2_inode
*ip
= GFS2_I(jd
->jd_inode
);
773 struct gfs2_glock
*gl
= ip
->i_gl
;
774 unsigned int blks
= be32_to_cpu(ld
->ld_data1
);
775 struct buffer_head
*bh_log
, *bh_ip
;
780 if (pass
!= 1 || be32_to_cpu(ld
->ld_type
) != GFS2_LOG_DESC_JDATA
)
783 gfs2_replay_incr_blk(jd
, &start
);
784 for (; blks
; gfs2_replay_incr_blk(jd
, &start
), blks
--) {
785 blkno
= be64_to_cpu(*ptr
++);
786 esc
= be64_to_cpu(*ptr
++);
788 jd
->jd_found_blocks
++;
790 if (gfs2_revoke_check(jd
, blkno
, start
))
793 error
= gfs2_replay_read_block(jd
, start
, &bh_log
);
797 bh_ip
= gfs2_meta_new(gl
, blkno
);
798 memcpy(bh_ip
->b_data
, bh_log
->b_data
, bh_log
->b_size
);
802 __be32
*eptr
= (__be32
*)bh_ip
->b_data
;
803 *eptr
= cpu_to_be32(GFS2_MAGIC
);
805 mark_buffer_dirty(bh_ip
);
810 jd
->jd_replayed_blocks
++;
816 /* FIXME: sort out accounting for log blocks etc. */
818 static void databuf_lo_after_scan(struct gfs2_jdesc
*jd
, int error
, int pass
)
820 struct gfs2_inode
*ip
= GFS2_I(jd
->jd_inode
);
821 struct gfs2_sbd
*sdp
= GFS2_SB(jd
->jd_inode
);
824 gfs2_meta_sync(ip
->i_gl
);
831 gfs2_meta_sync(ip
->i_gl
);
833 fs_info(sdp
, "jid=%u: Replayed %u of %u data blocks\n",
834 jd
->jd_jid
, jd
->jd_replayed_blocks
, jd
->jd_found_blocks
);
837 static void databuf_lo_after_commit(struct gfs2_sbd
*sdp
, struct gfs2_trans
*tr
)
839 struct list_head
*head
;
840 struct gfs2_bufdata
*bd
;
845 head
= &tr
->tr_databuf
;
846 while (!list_empty(head
)) {
847 bd
= list_entry(head
->next
, struct gfs2_bufdata
, bd_list
);
848 list_del_init(&bd
->bd_list
);
849 gfs2_unpin(sdp
, bd
->bd_bh
, tr
);
854 const struct gfs2_log_operations gfs2_buf_lops
= {
855 .lo_before_commit
= buf_lo_before_commit
,
856 .lo_after_commit
= buf_lo_after_commit
,
857 .lo_before_scan
= buf_lo_before_scan
,
858 .lo_scan_elements
= buf_lo_scan_elements
,
859 .lo_after_scan
= buf_lo_after_scan
,
863 const struct gfs2_log_operations gfs2_revoke_lops
= {
864 .lo_before_commit
= revoke_lo_before_commit
,
865 .lo_after_commit
= revoke_lo_after_commit
,
866 .lo_before_scan
= revoke_lo_before_scan
,
867 .lo_scan_elements
= revoke_lo_scan_elements
,
868 .lo_after_scan
= revoke_lo_after_scan
,
872 const struct gfs2_log_operations gfs2_databuf_lops
= {
873 .lo_before_commit
= databuf_lo_before_commit
,
874 .lo_after_commit
= databuf_lo_after_commit
,
875 .lo_scan_elements
= databuf_lo_scan_elements
,
876 .lo_after_scan
= databuf_lo_after_scan
,
877 .lo_name
= "databuf",
880 const struct gfs2_log_operations
*gfs2_log_ops
[] = {