17336d0e6SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only 2b3b94faaSDavid Teigland /* 3b3b94faaSDavid Teigland * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. 43a8a9a10SSteven Whitehouse * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. 5b3b94faaSDavid Teigland */ 6b3b94faaSDavid Teigland 7b3b94faaSDavid Teigland #include <linux/sched.h> 8b3b94faaSDavid Teigland #include <linux/slab.h> 9b3b94faaSDavid Teigland #include <linux/spinlock.h> 10b3b94faaSDavid Teigland #include <linux/completion.h> 11b3b94faaSDavid Teigland #include <linux/buffer_head.h> 1275ca61c1SSteven Whitehouse #include <linux/mempool.h> 135c676f6dSSteven Whitehouse #include <linux/gfs2_ondisk.h> 14c969f58cSSteven Whitehouse #include <linux/bio.h> 15c969f58cSSteven Whitehouse #include <linux/fs.h> 167f63257dSBenjamin Marzinski #include <linux/list_sort.h> 17f4686c26SAbhi Das #include <linux/blkdev.h> 18b3b94faaSDavid Teigland 19f4686c26SAbhi Das #include "bmap.h" 20c1696fb8SBob Peterson #include "dir.h" 21b3b94faaSDavid Teigland #include "gfs2.h" 225c676f6dSSteven Whitehouse #include "incore.h" 232332c443SRobert Peterson #include "inode.h" 24b3b94faaSDavid Teigland #include "glock.h" 25b3b94faaSDavid Teigland #include "log.h" 26b3b94faaSDavid Teigland #include "lops.h" 27b3b94faaSDavid Teigland #include "meta_io.h" 28b3b94faaSDavid Teigland #include "recovery.h" 29b3b94faaSDavid Teigland #include "rgrp.h" 30b3b94faaSDavid Teigland #include "trans.h" 315c676f6dSSteven Whitehouse #include "util.h" 3263997775SSteven Whitehouse #include "trace_gfs2.h" 33b3b94faaSDavid Teigland 349b9107a5SSteven Whitehouse /** 359b9107a5SSteven Whitehouse * gfs2_pin - Pin a buffer in memory 369b9107a5SSteven Whitehouse * @sdp: The superblock 379b9107a5SSteven Whitehouse * @bh: The buffer to be pinned 389b9107a5SSteven Whitehouse * 399b9107a5SSteven Whitehouse * The log lock must be held when calling this function 409b9107a5SSteven Whitehouse */ 41767f433fSSteven Whitehouse void gfs2_pin(struct gfs2_sbd *sdp, struct buffer_head *bh) 429b9107a5SSteven Whitehouse { 439b9107a5SSteven Whitehouse struct gfs2_bufdata *bd; 449b9107a5SSteven Whitehouse 4529687a2aSSteven Whitehouse BUG_ON(!current->journal_info); 469b9107a5SSteven Whitehouse 479b9107a5SSteven Whitehouse clear_buffer_dirty(bh); 489b9107a5SSteven Whitehouse if (test_set_buffer_pinned(bh)) 499b9107a5SSteven Whitehouse gfs2_assert_withdraw(sdp, 0); 509b9107a5SSteven Whitehouse if (!buffer_uptodate(bh)) 519e1a9ecdSAndreas Gruenbacher gfs2_io_error_bh_wd(sdp, bh); 529b9107a5SSteven Whitehouse bd = bh->b_private; 539b9107a5SSteven Whitehouse /* If this buffer is in the AIL and it has already been written 549b9107a5SSteven Whitehouse * to in-place disk block, remove it from the AIL. 559b9107a5SSteven Whitehouse */ 56c618e87aSSteven Whitehouse spin_lock(&sdp->sd_ail_lock); 5716ca9412SBenjamin Marzinski if (bd->bd_tr) 5816ca9412SBenjamin Marzinski list_move(&bd->bd_ail_st_list, &bd->bd_tr->tr_ail2_list); 59c618e87aSSteven Whitehouse spin_unlock(&sdp->sd_ail_lock); 609b9107a5SSteven Whitehouse get_bh(bh); 615e687eacSBenjamin Marzinski atomic_inc(&sdp->sd_log_pinned); 6263997775SSteven Whitehouse trace_gfs2_pin(bd, 1); 639b9107a5SSteven Whitehouse } 649b9107a5SSteven Whitehouse 657c9ca621SBob Peterson static bool buffer_is_rgrp(const struct gfs2_bufdata *bd) 667c9ca621SBob Peterson { 677c9ca621SBob Peterson return bd->bd_gl->gl_name.ln_type == LM_TYPE_RGRP; 687c9ca621SBob Peterson } 697c9ca621SBob Peterson 707c9ca621SBob Peterson static void maybe_release_space(struct gfs2_bufdata *bd) 717c9ca621SBob Peterson { 727c9ca621SBob Peterson struct gfs2_glock *gl = bd->bd_gl; 7315562c43SBob Peterson struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; 746f6597baSAndreas Gruenbacher struct gfs2_rgrpd *rgd = gfs2_glock2rgrp(gl); 757c9ca621SBob Peterson unsigned int index = bd->bd_bh->b_blocknr - gl->gl_name.ln_number; 767c9ca621SBob Peterson struct gfs2_bitmap *bi = rgd->rd_bits + index; 777c9ca621SBob Peterson 785a7c6690SFabian Frederick if (bi->bi_clone == NULL) 797c9ca621SBob Peterson return; 807c9ca621SBob Peterson if (sdp->sd_args.ar_discard) 8166fc061bSSteven Whitehouse gfs2_rgrp_send_discards(sdp, rgd->rd_data0, bd->bd_bh, bi, 1, NULL); 827c9ca621SBob Peterson memcpy(bi->bi_clone + bi->bi_offset, 83281b4952SAndreas Gruenbacher bd->bd_bh->b_data + bi->bi_offset, bi->bi_bytes); 847c9ca621SBob Peterson clear_bit(GBF_FULL, &bi->bi_flags); 857c9ca621SBob Peterson rgd->rd_free_clone = rgd->rd_free; 865ea5050cSBob Peterson rgd->rd_extfail_pt = rgd->rd_free; 877c9ca621SBob Peterson } 887c9ca621SBob Peterson 899b9107a5SSteven Whitehouse /** 909b9107a5SSteven Whitehouse * gfs2_unpin - Unpin a buffer 919b9107a5SSteven Whitehouse * @sdp: the filesystem the buffer belongs to 929b9107a5SSteven Whitehouse * @bh: The buffer to unpin 939b9107a5SSteven Whitehouse * @ai: 9429687a2aSSteven Whitehouse * @flags: The inode dirty flags 959b9107a5SSteven Whitehouse * 969b9107a5SSteven Whitehouse */ 979b9107a5SSteven Whitehouse 989b9107a5SSteven Whitehouse static void gfs2_unpin(struct gfs2_sbd *sdp, struct buffer_head *bh, 9916ca9412SBenjamin Marzinski struct gfs2_trans *tr) 1009b9107a5SSteven Whitehouse { 1019b9107a5SSteven Whitehouse struct gfs2_bufdata *bd = bh->b_private; 1029b9107a5SSteven Whitehouse 10329687a2aSSteven Whitehouse BUG_ON(!buffer_uptodate(bh)); 10429687a2aSSteven Whitehouse BUG_ON(!buffer_pinned(bh)); 1059b9107a5SSteven Whitehouse 1069b9107a5SSteven Whitehouse lock_buffer(bh); 1079b9107a5SSteven Whitehouse mark_buffer_dirty(bh); 1089b9107a5SSteven Whitehouse clear_buffer_pinned(bh); 1099b9107a5SSteven Whitehouse 1107c9ca621SBob Peterson if (buffer_is_rgrp(bd)) 1117c9ca621SBob Peterson maybe_release_space(bd); 1127c9ca621SBob Peterson 113d6a079e8SDave Chinner spin_lock(&sdp->sd_ail_lock); 11416ca9412SBenjamin Marzinski if (bd->bd_tr) { 1159b9107a5SSteven Whitehouse list_del(&bd->bd_ail_st_list); 1169b9107a5SSteven Whitehouse brelse(bh); 1179b9107a5SSteven Whitehouse } else { 1189b9107a5SSteven Whitehouse struct gfs2_glock *gl = bd->bd_gl; 1199b9107a5SSteven Whitehouse list_add(&bd->bd_ail_gl_list, &gl->gl_ail_list); 1209b9107a5SSteven Whitehouse atomic_inc(&gl->gl_ail_count); 1219b9107a5SSteven Whitehouse } 12216ca9412SBenjamin Marzinski bd->bd_tr = tr; 12316ca9412SBenjamin Marzinski list_add(&bd->bd_ail_st_list, &tr->tr_ail1_list); 124d6a079e8SDave Chinner spin_unlock(&sdp->sd_ail_lock); 125d6a079e8SDave Chinner 12629687a2aSSteven Whitehouse clear_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags); 12763997775SSteven Whitehouse trace_gfs2_pin(bd, 0); 1289b9107a5SSteven Whitehouse unlock_buffer(bh); 1295e687eacSBenjamin Marzinski atomic_dec(&sdp->sd_log_pinned); 1309b9107a5SSteven Whitehouse } 1319b9107a5SSteven Whitehouse 13219ebc050SAndreas Gruenbacher void gfs2_log_incr_head(struct gfs2_sbd *sdp) 13316615be1SSteven Whitehouse { 134e8c92ed7SSteven Whitehouse BUG_ON((sdp->sd_log_flush_head == sdp->sd_log_tail) && 135e8c92ed7SSteven Whitehouse (sdp->sd_log_flush_head != sdp->sd_log_head)); 136e8c92ed7SSteven Whitehouse 137722f6f62SBob Peterson if (++sdp->sd_log_flush_head == sdp->sd_jdesc->jd_blocks) 138e8c92ed7SSteven Whitehouse sdp->sd_log_flush_head = 0; 13916615be1SSteven Whitehouse } 14016615be1SSteven Whitehouse 14119ebc050SAndreas Gruenbacher u64 gfs2_log_bmap(struct gfs2_jdesc *jd, unsigned int lblock) 14216615be1SSteven Whitehouse { 143e8c92ed7SSteven Whitehouse struct gfs2_journal_extent *je; 14416615be1SSteven Whitehouse 14519ebc050SAndreas Gruenbacher list_for_each_entry(je, &jd->extent_list, list) { 14619ebc050SAndreas Gruenbacher if (lblock >= je->lblock && lblock < je->lblock + je->blocks) 14719ebc050SAndreas Gruenbacher return je->dblock + lblock - je->lblock; 148e8c92ed7SSteven Whitehouse } 14947ac5537SSteven Whitehouse 150e8c92ed7SSteven Whitehouse return -1; 15147ac5537SSteven Whitehouse } 15247ac5537SSteven Whitehouse 15347ac5537SSteven Whitehouse /** 154e8c92ed7SSteven Whitehouse * gfs2_end_log_write_bh - end log write of pagecache data with buffers 155e8c92ed7SSteven Whitehouse * @sdp: The superblock 156e8c92ed7SSteven Whitehouse * @bvec: The bio_vec 157e8c92ed7SSteven Whitehouse * @error: The i/o status 158e8c92ed7SSteven Whitehouse * 1594519eaadSBob Peterson * This finds the relevant buffers and unlocks them and sets the 160e8c92ed7SSteven Whitehouse * error flag according to the status of the i/o request. This is 161e8c92ed7SSteven Whitehouse * used when the log is writing data which has an in-place version 162e8c92ed7SSteven Whitehouse * that is pinned in the pagecache. 163e8c92ed7SSteven Whitehouse */ 164e8c92ed7SSteven Whitehouse 1656dc4f100SMing Lei static void gfs2_end_log_write_bh(struct gfs2_sbd *sdp, 1666dc4f100SMing Lei struct bio_vec *bvec, 1674e4cbee9SChristoph Hellwig blk_status_t error) 168e8c92ed7SSteven Whitehouse { 169e8c92ed7SSteven Whitehouse struct buffer_head *bh, *next; 170e8c92ed7SSteven Whitehouse struct page *page = bvec->bv_page; 171e8c92ed7SSteven Whitehouse unsigned size; 172e8c92ed7SSteven Whitehouse 173e8c92ed7SSteven Whitehouse bh = page_buffers(page); 174e8c92ed7SSteven Whitehouse size = bvec->bv_len; 175e8c92ed7SSteven Whitehouse while (bh_offset(bh) < bvec->bv_offset) 176e8c92ed7SSteven Whitehouse bh = bh->b_this_page; 177e8c92ed7SSteven Whitehouse do { 178e8c92ed7SSteven Whitehouse if (error) 17987354e5dSJeff Layton mark_buffer_write_io_error(bh); 180e8c92ed7SSteven Whitehouse unlock_buffer(bh); 181e8c92ed7SSteven Whitehouse next = bh->b_this_page; 182e8c92ed7SSteven Whitehouse size -= bh->b_size; 183e8c92ed7SSteven Whitehouse brelse(bh); 184e8c92ed7SSteven Whitehouse bh = next; 185e8c92ed7SSteven Whitehouse } while(bh && size); 186e8c92ed7SSteven Whitehouse } 187e8c92ed7SSteven Whitehouse 188e8c92ed7SSteven Whitehouse /** 189e8c92ed7SSteven Whitehouse * gfs2_end_log_write - end of i/o to the log 190e8c92ed7SSteven Whitehouse * @bio: The bio 191e8c92ed7SSteven Whitehouse * 192e8c92ed7SSteven Whitehouse * Each bio_vec contains either data from the pagecache or data 193e8c92ed7SSteven Whitehouse * relating to the log itself. Here we iterate over the bio_vec 194e8c92ed7SSteven Whitehouse * array, processing both kinds of data. 19547ac5537SSteven Whitehouse * 19647ac5537SSteven Whitehouse */ 19747ac5537SSteven Whitehouse 1984246a0b6SChristoph Hellwig static void gfs2_end_log_write(struct bio *bio) 19947ac5537SSteven Whitehouse { 200e8c92ed7SSteven Whitehouse struct gfs2_sbd *sdp = bio->bi_private; 201e8c92ed7SSteven Whitehouse struct bio_vec *bvec; 202e8c92ed7SSteven Whitehouse struct page *page; 2036dc4f100SMing Lei struct bvec_iter_all iter_all; 20447ac5537SSteven Whitehouse 205942b0cddSBob Peterson if (bio->bi_status) { 206942b0cddSBob Peterson fs_err(sdp, "Error %d writing to journal, jid=%u\n", 207942b0cddSBob Peterson bio->bi_status, sdp->sd_jdesc->jd_jid); 208942b0cddSBob Peterson wake_up(&sdp->sd_logd_waitq); 209942b0cddSBob Peterson } 210e8c92ed7SSteven Whitehouse 2112b070cfeSChristoph Hellwig bio_for_each_segment_all(bvec, bio, iter_all) { 212e8c92ed7SSteven Whitehouse page = bvec->bv_page; 213e8c92ed7SSteven Whitehouse if (page_has_buffers(page)) 2144e4cbee9SChristoph Hellwig gfs2_end_log_write_bh(sdp, bvec, bio->bi_status); 215e8c92ed7SSteven Whitehouse else 216e8c92ed7SSteven Whitehouse mempool_free(page, gfs2_page_pool); 217e8c92ed7SSteven Whitehouse } 218e8c92ed7SSteven Whitehouse 219e8c92ed7SSteven Whitehouse bio_put(bio); 22047ac5537SSteven Whitehouse if (atomic_dec_and_test(&sdp->sd_log_in_flight)) 22147ac5537SSteven Whitehouse wake_up(&sdp->sd_log_flush_wait); 22247ac5537SSteven Whitehouse } 22347ac5537SSteven Whitehouse 22447ac5537SSteven Whitehouse /** 2255b846095SAbhi Das * gfs2_log_submit_bio - Submit any pending log bio 2265b846095SAbhi Das * @biop: Address of the bio pointer 227f4686c26SAbhi Das * @opf: REQ_OP | op_flags 228e8c92ed7SSteven Whitehouse * 229e8c92ed7SSteven Whitehouse * Submit any pending part-built or full bio to the block device. If 230e8c92ed7SSteven Whitehouse * there is no pending bio, then this is a no-op. 231e8c92ed7SSteven Whitehouse */ 232e8c92ed7SSteven Whitehouse 233f4686c26SAbhi Das void gfs2_log_submit_bio(struct bio **biop, int opf) 234e8c92ed7SSteven Whitehouse { 2355b846095SAbhi Das struct bio *bio = *biop; 2365b846095SAbhi Das if (bio) { 2375b846095SAbhi Das struct gfs2_sbd *sdp = bio->bi_private; 238e8c92ed7SSteven Whitehouse atomic_inc(&sdp->sd_log_in_flight); 239f4686c26SAbhi Das bio->bi_opf = opf; 2405b846095SAbhi Das submit_bio(bio); 2415b846095SAbhi Das *biop = NULL; 242e8c92ed7SSteven Whitehouse } 243e8c92ed7SSteven Whitehouse } 244e8c92ed7SSteven Whitehouse 245e8c92ed7SSteven Whitehouse /** 2465b846095SAbhi Das * gfs2_log_alloc_bio - Allocate a bio 247e8c92ed7SSteven Whitehouse * @sdp: The super block 2485b846095SAbhi Das * @blkno: The device block number we want to write to 2495b846095SAbhi Das * @end_io: The bi_end_io callback 250e8c92ed7SSteven Whitehouse * 2515b846095SAbhi Das * Allocate a new bio, initialize it with the given parameters and return it. 252e8c92ed7SSteven Whitehouse * 2535b846095SAbhi Das * Returns: The newly allocated bio 254e8c92ed7SSteven Whitehouse */ 255e8c92ed7SSteven Whitehouse 2565b846095SAbhi Das static struct bio *gfs2_log_alloc_bio(struct gfs2_sbd *sdp, u64 blkno, 2575b846095SAbhi Das bio_end_io_t *end_io) 258e8c92ed7SSteven Whitehouse { 259e8c92ed7SSteven Whitehouse struct super_block *sb = sdp->sd_vfs; 2605b846095SAbhi Das struct bio *bio = bio_alloc(GFP_NOIO, BIO_MAX_PAGES); 261e8c92ed7SSteven Whitehouse 2624f024f37SKent Overstreet bio->bi_iter.bi_sector = blkno * (sb->s_blocksize >> 9); 26374d46992SChristoph Hellwig bio_set_dev(bio, sb->s_bdev); 2645b846095SAbhi Das bio->bi_end_io = end_io; 265e8c92ed7SSteven Whitehouse bio->bi_private = sdp; 266e8c92ed7SSteven Whitehouse 267e8c92ed7SSteven Whitehouse return bio; 268e8c92ed7SSteven Whitehouse } 269e8c92ed7SSteven Whitehouse 270e8c92ed7SSteven Whitehouse /** 271e8c92ed7SSteven Whitehouse * gfs2_log_get_bio - Get cached log bio, or allocate a new one 272e8c92ed7SSteven Whitehouse * @sdp: The super block 273e8c92ed7SSteven Whitehouse * @blkno: The device block number we want to write to 2745b846095SAbhi Das * @bio: The bio to get or allocate 2755b846095SAbhi Das * @op: REQ_OP 2765b846095SAbhi Das * @end_io: The bi_end_io callback 2775b846095SAbhi Das * @flush: Always flush the current bio and allocate a new one? 278e8c92ed7SSteven Whitehouse * 279e8c92ed7SSteven Whitehouse * If there is a cached bio, then if the next block number is sequential 280e8c92ed7SSteven Whitehouse * with the previous one, return it, otherwise flush the bio to the 2815b846095SAbhi Das * device. If there is no cached bio, or we just flushed it, then 282e8c92ed7SSteven Whitehouse * allocate a new one. 283e8c92ed7SSteven Whitehouse * 284e8c92ed7SSteven Whitehouse * Returns: The bio to use for log writes 285e8c92ed7SSteven Whitehouse */ 286e8c92ed7SSteven Whitehouse 2875b846095SAbhi Das static struct bio *gfs2_log_get_bio(struct gfs2_sbd *sdp, u64 blkno, 2885b846095SAbhi Das struct bio **biop, int op, 2895b846095SAbhi Das bio_end_io_t *end_io, bool flush) 290e8c92ed7SSteven Whitehouse { 2915b846095SAbhi Das struct bio *bio = *biop; 292e8c92ed7SSteven Whitehouse 293e8c92ed7SSteven Whitehouse if (bio) { 2945b846095SAbhi Das u64 nblk; 2955b846095SAbhi Das 296f73a1c7dSKent Overstreet nblk = bio_end_sector(bio); 297e8c92ed7SSteven Whitehouse nblk >>= sdp->sd_fsb2bb_shift; 2985b846095SAbhi Das if (blkno == nblk && !flush) 299e8c92ed7SSteven Whitehouse return bio; 300f4686c26SAbhi Das gfs2_log_submit_bio(biop, op); 301e8c92ed7SSteven Whitehouse } 302e8c92ed7SSteven Whitehouse 3035b846095SAbhi Das *biop = gfs2_log_alloc_bio(sdp, blkno, end_io); 3045b846095SAbhi Das return *biop; 305e8c92ed7SSteven Whitehouse } 306e8c92ed7SSteven Whitehouse 307e8c92ed7SSteven Whitehouse /** 308e8c92ed7SSteven Whitehouse * gfs2_log_write - write to log 30947ac5537SSteven Whitehouse * @sdp: the filesystem 310e8c92ed7SSteven Whitehouse * @page: the page to write 311e8c92ed7SSteven Whitehouse * @size: the size of the data to write 312e8c92ed7SSteven Whitehouse * @offset: the offset within the page 313c1696fb8SBob Peterson * @blkno: block number of the log entry 31447ac5537SSteven Whitehouse * 315e8c92ed7SSteven Whitehouse * Try and add the page segment to the current bio. If that fails, 316e8c92ed7SSteven Whitehouse * submit the current bio to the device and create a new one, and 317e8c92ed7SSteven Whitehouse * then add the page segment to that. 31847ac5537SSteven Whitehouse */ 31947ac5537SSteven Whitehouse 320c1696fb8SBob Peterson void gfs2_log_write(struct gfs2_sbd *sdp, struct page *page, 321c1696fb8SBob Peterson unsigned size, unsigned offset, u64 blkno) 32247ac5537SSteven Whitehouse { 323e8c92ed7SSteven Whitehouse struct bio *bio; 324e8c92ed7SSteven Whitehouse int ret; 32547ac5537SSteven Whitehouse 3265b846095SAbhi Das bio = gfs2_log_get_bio(sdp, blkno, &sdp->sd_log_bio, REQ_OP_WRITE, 3275b846095SAbhi Das gfs2_end_log_write, false); 328e8c92ed7SSteven Whitehouse ret = bio_add_page(bio, page, size, offset); 329e8c92ed7SSteven Whitehouse if (ret == 0) { 3305b846095SAbhi Das bio = gfs2_log_get_bio(sdp, blkno, &sdp->sd_log_bio, 3315b846095SAbhi Das REQ_OP_WRITE, gfs2_end_log_write, true); 332e8c92ed7SSteven Whitehouse ret = bio_add_page(bio, page, size, offset); 333e8c92ed7SSteven Whitehouse WARN_ON(ret == 0); 334e8c92ed7SSteven Whitehouse } 33547ac5537SSteven Whitehouse } 33616615be1SSteven Whitehouse 337e8c92ed7SSteven Whitehouse /** 338e8c92ed7SSteven Whitehouse * gfs2_log_write_bh - write a buffer's content to the log 339e8c92ed7SSteven Whitehouse * @sdp: The super block 340e8c92ed7SSteven Whitehouse * @bh: The buffer pointing to the in-place location 341e8c92ed7SSteven Whitehouse * 342e8c92ed7SSteven Whitehouse * This writes the content of the buffer to the next available location 343e8c92ed7SSteven Whitehouse * in the log. The buffer will be unlocked once the i/o to the log has 344e8c92ed7SSteven Whitehouse * completed. 345e8c92ed7SSteven Whitehouse */ 346e8c92ed7SSteven Whitehouse 347e8c92ed7SSteven Whitehouse static void gfs2_log_write_bh(struct gfs2_sbd *sdp, struct buffer_head *bh) 34816615be1SSteven Whitehouse { 34919ebc050SAndreas Gruenbacher u64 dblock; 35019ebc050SAndreas Gruenbacher 35119ebc050SAndreas Gruenbacher dblock = gfs2_log_bmap(sdp->sd_jdesc, sdp->sd_log_flush_head); 35219ebc050SAndreas Gruenbacher gfs2_log_incr_head(sdp); 35319ebc050SAndreas Gruenbacher gfs2_log_write(sdp, bh->b_page, bh->b_size, bh_offset(bh), dblock); 354e8c92ed7SSteven Whitehouse } 355e8c92ed7SSteven Whitehouse 356e8c92ed7SSteven Whitehouse /** 357e8c92ed7SSteven Whitehouse * gfs2_log_write_page - write one block stored in a page, into the log 358e8c92ed7SSteven Whitehouse * @sdp: The superblock 359e8c92ed7SSteven Whitehouse * @page: The struct page 360e8c92ed7SSteven Whitehouse * 361e8c92ed7SSteven Whitehouse * This writes the first block-sized part of the page into the log. Note 362e8c92ed7SSteven Whitehouse * that the page must have been allocated from the gfs2_page_pool mempool 363e8c92ed7SSteven Whitehouse * and that after this has been called, ownership has been transferred and 364e8c92ed7SSteven Whitehouse * the page may be freed at any time. 365e8c92ed7SSteven Whitehouse */ 366e8c92ed7SSteven Whitehouse 367e8c92ed7SSteven Whitehouse void gfs2_log_write_page(struct gfs2_sbd *sdp, struct page *page) 368e8c92ed7SSteven Whitehouse { 369e8c92ed7SSteven Whitehouse struct super_block *sb = sdp->sd_vfs; 37019ebc050SAndreas Gruenbacher u64 dblock; 37119ebc050SAndreas Gruenbacher 37219ebc050SAndreas Gruenbacher dblock = gfs2_log_bmap(sdp->sd_jdesc, sdp->sd_log_flush_head); 37319ebc050SAndreas Gruenbacher gfs2_log_incr_head(sdp); 37419ebc050SAndreas Gruenbacher gfs2_log_write(sdp, page, sb->s_blocksize, 0, dblock); 375e8c92ed7SSteven Whitehouse } 376e8c92ed7SSteven Whitehouse 377f4686c26SAbhi Das /** 378f4686c26SAbhi Das * gfs2_end_log_read - end I/O callback for reads from the log 379f4686c26SAbhi Das * @bio: The bio 380f4686c26SAbhi Das * 381f4686c26SAbhi Das * Simply unlock the pages in the bio. The main thread will wait on them and 382f4686c26SAbhi Das * process them in order as necessary. 383f4686c26SAbhi Das */ 384f4686c26SAbhi Das 385f4686c26SAbhi Das static void gfs2_end_log_read(struct bio *bio) 386f4686c26SAbhi Das { 387f4686c26SAbhi Das struct page *page; 388f4686c26SAbhi Das struct bio_vec *bvec; 389f4686c26SAbhi Das struct bvec_iter_all iter_all; 390f4686c26SAbhi Das 391ef75bd71SLinus Torvalds bio_for_each_segment_all(bvec, bio, iter_all) { 392f4686c26SAbhi Das page = bvec->bv_page; 393f4686c26SAbhi Das if (bio->bi_status) { 394f4686c26SAbhi Das int err = blk_status_to_errno(bio->bi_status); 395f4686c26SAbhi Das 396f4686c26SAbhi Das SetPageError(page); 397f4686c26SAbhi Das mapping_set_error(page->mapping, err); 398f4686c26SAbhi Das } 399f4686c26SAbhi Das unlock_page(page); 400f4686c26SAbhi Das } 401f4686c26SAbhi Das 402f4686c26SAbhi Das bio_put(bio); 403f4686c26SAbhi Das } 404f4686c26SAbhi Das 405f4686c26SAbhi Das /** 406f4686c26SAbhi Das * gfs2_jhead_pg_srch - Look for the journal head in a given page. 407f4686c26SAbhi Das * @jd: The journal descriptor 408f4686c26SAbhi Das * @page: The page to look in 409f4686c26SAbhi Das * 410f4686c26SAbhi Das * Returns: 1 if found, 0 otherwise. 411f4686c26SAbhi Das */ 412f4686c26SAbhi Das 413f4686c26SAbhi Das static bool gfs2_jhead_pg_srch(struct gfs2_jdesc *jd, 414f4686c26SAbhi Das struct gfs2_log_header_host *head, 415f4686c26SAbhi Das struct page *page) 416f4686c26SAbhi Das { 417f4686c26SAbhi Das struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 418f4686c26SAbhi Das struct gfs2_log_header_host uninitialized_var(lh); 419f4686c26SAbhi Das void *kaddr = kmap_atomic(page); 420f4686c26SAbhi Das unsigned int offset; 421f4686c26SAbhi Das bool ret = false; 422f4686c26SAbhi Das 423f4686c26SAbhi Das for (offset = 0; offset < PAGE_SIZE; offset += sdp->sd_sb.sb_bsize) { 424f4686c26SAbhi Das if (!__get_log_header(sdp, kaddr + offset, 0, &lh)) { 425f4686c26SAbhi Das if (lh.lh_sequence > head->lh_sequence) 426f4686c26SAbhi Das *head = lh; 427f4686c26SAbhi Das else { 428f4686c26SAbhi Das ret = true; 429f4686c26SAbhi Das break; 430f4686c26SAbhi Das } 431f4686c26SAbhi Das } 432f4686c26SAbhi Das } 433f4686c26SAbhi Das kunmap_atomic(kaddr); 434f4686c26SAbhi Das return ret; 435f4686c26SAbhi Das } 436f4686c26SAbhi Das 437f4686c26SAbhi Das /** 438f4686c26SAbhi Das * gfs2_jhead_process_page - Search/cleanup a page 439f4686c26SAbhi Das * @jd: The journal descriptor 440f4686c26SAbhi Das * @index: Index of the page to look into 441f4686c26SAbhi Das * @done: If set, perform only cleanup, else search and set if found. 442f4686c26SAbhi Das * 443f4686c26SAbhi Das * Find the page with 'index' in the journal's mapping. Search the page for 444f4686c26SAbhi Das * the journal head if requested (cleanup == false). Release refs on the 445f4686c26SAbhi Das * page so the page cache can reclaim it (put_page() twice). We grabbed a 446f4686c26SAbhi Das * reference on this page two times, first when we did a find_or_create_page() 447f4686c26SAbhi Das * to obtain the page to add it to the bio and second when we do a 448f4686c26SAbhi Das * find_get_page() here to get the page to wait on while I/O on it is being 449f4686c26SAbhi Das * completed. 450f4686c26SAbhi Das * This function is also used to free up a page we might've grabbed but not 451f4686c26SAbhi Das * used. Maybe we added it to a bio, but not submitted it for I/O. Or we 452f4686c26SAbhi Das * submitted the I/O, but we already found the jhead so we only need to drop 453f4686c26SAbhi Das * our references to the page. 454f4686c26SAbhi Das */ 455f4686c26SAbhi Das 456f4686c26SAbhi Das static void gfs2_jhead_process_page(struct gfs2_jdesc *jd, unsigned long index, 457f4686c26SAbhi Das struct gfs2_log_header_host *head, 458f4686c26SAbhi Das bool *done) 459f4686c26SAbhi Das { 460f4686c26SAbhi Das struct page *page; 461f4686c26SAbhi Das 462f4686c26SAbhi Das page = find_get_page(jd->jd_inode->i_mapping, index); 463f4686c26SAbhi Das wait_on_page_locked(page); 464f4686c26SAbhi Das 465f4686c26SAbhi Das if (PageError(page)) 466f4686c26SAbhi Das *done = true; 467f4686c26SAbhi Das 468f4686c26SAbhi Das if (!*done) 469f4686c26SAbhi Das *done = gfs2_jhead_pg_srch(jd, head, page); 470f4686c26SAbhi Das 471f4686c26SAbhi Das put_page(page); /* Once for find_get_page */ 472f4686c26SAbhi Das put_page(page); /* Once more for find_or_create_page */ 473f4686c26SAbhi Das } 474f4686c26SAbhi Das 475f4686c26SAbhi Das /** 476f4686c26SAbhi Das * gfs2_find_jhead - find the head of a log 477f4686c26SAbhi Das * @jd: The journal descriptor 478f4686c26SAbhi Das * @head: The log descriptor for the head of the log is returned here 479f4686c26SAbhi Das * 480f4686c26SAbhi Das * Do a search of a journal by reading it in large chunks using bios and find 481f4686c26SAbhi Das * the valid log entry with the highest sequence number. (i.e. the log head) 482f4686c26SAbhi Das * 483f4686c26SAbhi Das * Returns: 0 on success, errno otherwise 484f4686c26SAbhi Das */ 485f4686c26SAbhi Das int gfs2_find_jhead(struct gfs2_jdesc *jd, struct gfs2_log_header_host *head, 486f4686c26SAbhi Das bool keep_cache) 487f4686c26SAbhi Das { 488f4686c26SAbhi Das struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 489f4686c26SAbhi Das struct address_space *mapping = jd->jd_inode->i_mapping; 490f4686c26SAbhi Das unsigned int block = 0, blocks_submitted = 0, blocks_read = 0; 491f4686c26SAbhi Das unsigned int bsize = sdp->sd_sb.sb_bsize; 492f4686c26SAbhi Das unsigned int bsize_shift = sdp->sd_sb.sb_bsize_shift; 493f4686c26SAbhi Das unsigned int shift = PAGE_SHIFT - bsize_shift; 494f4686c26SAbhi Das unsigned int readhead_blocks = BIO_MAX_PAGES << shift; 495f4686c26SAbhi Das struct gfs2_journal_extent *je; 496f4686c26SAbhi Das int sz, ret = 0; 497f4686c26SAbhi Das struct bio *bio = NULL; 498f4686c26SAbhi Das struct page *page = NULL; 499f4686c26SAbhi Das bool done = false; 500f4686c26SAbhi Das errseq_t since; 501f4686c26SAbhi Das 502f4686c26SAbhi Das memset(head, 0, sizeof(*head)); 503f4686c26SAbhi Das if (list_empty(&jd->extent_list)) 504f4686c26SAbhi Das gfs2_map_journal_extents(sdp, jd); 505f4686c26SAbhi Das 506f4686c26SAbhi Das since = filemap_sample_wb_err(mapping); 507f4686c26SAbhi Das list_for_each_entry(je, &jd->extent_list, list) { 508f4686c26SAbhi Das for (; block < je->lblock + je->blocks; block++) { 509f4686c26SAbhi Das u64 dblock; 510f4686c26SAbhi Das 511f4686c26SAbhi Das if (!page) { 512f4686c26SAbhi Das page = find_or_create_page(mapping, 513f4686c26SAbhi Das block >> shift, GFP_NOFS); 514f4686c26SAbhi Das if (!page) { 515f4686c26SAbhi Das ret = -ENOMEM; 516f4686c26SAbhi Das done = true; 517f4686c26SAbhi Das goto out; 518f4686c26SAbhi Das } 519f4686c26SAbhi Das } 520f4686c26SAbhi Das 521f4686c26SAbhi Das if (bio) { 522f4686c26SAbhi Das unsigned int off; 523f4686c26SAbhi Das 524f4686c26SAbhi Das off = (block << bsize_shift) & ~PAGE_MASK; 525f4686c26SAbhi Das sz = bio_add_page(bio, page, bsize, off); 526f4686c26SAbhi Das if (sz == bsize) { /* block added */ 527f4686c26SAbhi Das if (off + bsize == PAGE_SIZE) { 528f4686c26SAbhi Das page = NULL; 529f4686c26SAbhi Das goto page_added; 530f4686c26SAbhi Das } 531f4686c26SAbhi Das continue; 532f4686c26SAbhi Das } 533f4686c26SAbhi Das blocks_submitted = block + 1; 534f4686c26SAbhi Das submit_bio(bio); 535f4686c26SAbhi Das bio = NULL; 536f4686c26SAbhi Das } 537f4686c26SAbhi Das 538f4686c26SAbhi Das dblock = je->dblock + (block - je->lblock); 539f4686c26SAbhi Das bio = gfs2_log_alloc_bio(sdp, dblock, gfs2_end_log_read); 540f4686c26SAbhi Das bio->bi_opf = REQ_OP_READ; 541f4686c26SAbhi Das sz = bio_add_page(bio, page, bsize, 0); 542f4686c26SAbhi Das gfs2_assert_warn(sdp, sz == bsize); 543f4686c26SAbhi Das if (bsize == PAGE_SIZE) 544f4686c26SAbhi Das page = NULL; 545f4686c26SAbhi Das 546f4686c26SAbhi Das page_added: 547f4686c26SAbhi Das if (blocks_submitted < blocks_read + readhead_blocks) { 548f4686c26SAbhi Das /* Keep at least one bio in flight */ 549f4686c26SAbhi Das continue; 550f4686c26SAbhi Das } 551f4686c26SAbhi Das 552f4686c26SAbhi Das gfs2_jhead_process_page(jd, blocks_read >> shift, head, &done); 553f4686c26SAbhi Das blocks_read += PAGE_SIZE >> bsize_shift; 554f4686c26SAbhi Das if (done) 555f4686c26SAbhi Das goto out; /* found */ 556f4686c26SAbhi Das } 557f4686c26SAbhi Das } 558f4686c26SAbhi Das 559f4686c26SAbhi Das out: 560f4686c26SAbhi Das if (bio) 561f4686c26SAbhi Das submit_bio(bio); 562f4686c26SAbhi Das while (blocks_read < block) { 563f4686c26SAbhi Das gfs2_jhead_process_page(jd, blocks_read >> shift, head, &done); 564f4686c26SAbhi Das blocks_read += PAGE_SIZE >> bsize_shift; 565f4686c26SAbhi Das } 566f4686c26SAbhi Das 567f4686c26SAbhi Das if (!ret) 568f4686c26SAbhi Das ret = filemap_check_wb_err(mapping, since); 569f4686c26SAbhi Das 570f4686c26SAbhi Das if (!keep_cache) 571f4686c26SAbhi Das truncate_inode_pages(mapping, 0); 572f4686c26SAbhi Das 573f4686c26SAbhi Das return ret; 574f4686c26SAbhi Das } 575f4686c26SAbhi Das 576dad30e90SSteven Whitehouse static struct page *gfs2_get_log_desc(struct gfs2_sbd *sdp, u32 ld_type, 577dad30e90SSteven Whitehouse u32 ld_length, u32 ld_data1) 578e8c92ed7SSteven Whitehouse { 579144a4c2fSSteven Whitehouse struct page *page = mempool_alloc(gfs2_page_pool, GFP_NOIO); 580e8c92ed7SSteven Whitehouse struct gfs2_log_descriptor *ld = page_address(page); 581e8c92ed7SSteven Whitehouse clear_page(ld); 58216615be1SSteven Whitehouse ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC); 58316615be1SSteven Whitehouse ld->ld_header.mh_type = cpu_to_be32(GFS2_METATYPE_LD); 58416615be1SSteven Whitehouse ld->ld_header.mh_format = cpu_to_be32(GFS2_FORMAT_LD); 58516615be1SSteven Whitehouse ld->ld_type = cpu_to_be32(ld_type); 586dad30e90SSteven Whitehouse ld->ld_length = cpu_to_be32(ld_length); 587dad30e90SSteven Whitehouse ld->ld_data1 = cpu_to_be32(ld_data1); 58816615be1SSteven Whitehouse ld->ld_data2 = 0; 589e8c92ed7SSteven Whitehouse return page; 59016615be1SSteven Whitehouse } 59116615be1SSteven Whitehouse 592dad30e90SSteven Whitehouse static void gfs2_check_magic(struct buffer_head *bh) 593dad30e90SSteven Whitehouse { 594dad30e90SSteven Whitehouse void *kaddr; 595dad30e90SSteven Whitehouse __be32 *ptr; 596dad30e90SSteven Whitehouse 597dad30e90SSteven Whitehouse clear_buffer_escaped(bh); 598dad30e90SSteven Whitehouse kaddr = kmap_atomic(bh->b_page); 599dad30e90SSteven Whitehouse ptr = kaddr + bh_offset(bh); 600dad30e90SSteven Whitehouse if (*ptr == cpu_to_be32(GFS2_MAGIC)) 601dad30e90SSteven Whitehouse set_buffer_escaped(bh); 602dad30e90SSteven Whitehouse kunmap_atomic(kaddr); 603dad30e90SSteven Whitehouse } 604dad30e90SSteven Whitehouse 6057f63257dSBenjamin Marzinski static int blocknr_cmp(void *priv, struct list_head *a, struct list_head *b) 6067f63257dSBenjamin Marzinski { 6077f63257dSBenjamin Marzinski struct gfs2_bufdata *bda, *bdb; 6087f63257dSBenjamin Marzinski 6097f63257dSBenjamin Marzinski bda = list_entry(a, struct gfs2_bufdata, bd_list); 6107f63257dSBenjamin Marzinski bdb = list_entry(b, struct gfs2_bufdata, bd_list); 6117f63257dSBenjamin Marzinski 6127f63257dSBenjamin Marzinski if (bda->bd_bh->b_blocknr < bdb->bd_bh->b_blocknr) 6137f63257dSBenjamin Marzinski return -1; 6147f63257dSBenjamin Marzinski if (bda->bd_bh->b_blocknr > bdb->bd_bh->b_blocknr) 6157f63257dSBenjamin Marzinski return 1; 6167f63257dSBenjamin Marzinski return 0; 6177f63257dSBenjamin Marzinski } 6187f63257dSBenjamin Marzinski 619dad30e90SSteven Whitehouse static void gfs2_before_commit(struct gfs2_sbd *sdp, unsigned int limit, 620dad30e90SSteven Whitehouse unsigned int total, struct list_head *blist, 621dad30e90SSteven Whitehouse bool is_databuf) 622b3b94faaSDavid Teigland { 623b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld; 624b3b94faaSDavid Teigland struct gfs2_bufdata *bd1 = NULL, *bd2; 625e8c92ed7SSteven Whitehouse struct page *page; 626b3b94faaSDavid Teigland unsigned int num; 627b3b94faaSDavid Teigland unsigned n; 628b3b94faaSDavid Teigland __be64 *ptr; 629b3b94faaSDavid Teigland 630905d2aefSBob Peterson gfs2_log_lock(sdp); 6317f63257dSBenjamin Marzinski list_sort(NULL, blist, blocknr_cmp); 632c0752aa7SBob Peterson bd1 = bd2 = list_prepare_entry(bd1, blist, bd_list); 633b3b94faaSDavid Teigland while(total) { 634b3b94faaSDavid Teigland num = total; 635b3b94faaSDavid Teigland if (total > limit) 636b3b94faaSDavid Teigland num = limit; 637905d2aefSBob Peterson gfs2_log_unlock(sdp); 6384a586812SBob Peterson page = gfs2_get_log_desc(sdp, 6394a586812SBob Peterson is_databuf ? GFS2_LOG_DESC_JDATA : 6404a586812SBob Peterson GFS2_LOG_DESC_METADATA, num + 1, num); 641e8c92ed7SSteven Whitehouse ld = page_address(page); 642905d2aefSBob Peterson gfs2_log_lock(sdp); 643e8c92ed7SSteven Whitehouse ptr = (__be64 *)(ld + 1); 644b3b94faaSDavid Teigland 645b3b94faaSDavid Teigland n = 0; 646c0752aa7SBob Peterson list_for_each_entry_continue(bd1, blist, bd_list) { 647b3b94faaSDavid Teigland *ptr++ = cpu_to_be64(bd1->bd_bh->b_blocknr); 648dad30e90SSteven Whitehouse if (is_databuf) { 649dad30e90SSteven Whitehouse gfs2_check_magic(bd1->bd_bh); 650dad30e90SSteven Whitehouse *ptr++ = cpu_to_be64(buffer_escaped(bd1->bd_bh) ? 1 : 0); 651dad30e90SSteven Whitehouse } 652b3b94faaSDavid Teigland if (++n >= num) 653b3b94faaSDavid Teigland break; 654b3b94faaSDavid Teigland } 655b3b94faaSDavid Teigland 656905d2aefSBob Peterson gfs2_log_unlock(sdp); 657e8c92ed7SSteven Whitehouse gfs2_log_write_page(sdp, page); 658905d2aefSBob Peterson gfs2_log_lock(sdp); 659b3b94faaSDavid Teigland 660b3b94faaSDavid Teigland n = 0; 661c0752aa7SBob Peterson list_for_each_entry_continue(bd2, blist, bd_list) { 66216615be1SSteven Whitehouse get_bh(bd2->bd_bh); 663905d2aefSBob Peterson gfs2_log_unlock(sdp); 66416615be1SSteven Whitehouse lock_buffer(bd2->bd_bh); 665dad30e90SSteven Whitehouse 666dad30e90SSteven Whitehouse if (buffer_escaped(bd2->bd_bh)) { 667dad30e90SSteven Whitehouse void *kaddr; 668dad30e90SSteven Whitehouse page = mempool_alloc(gfs2_page_pool, GFP_NOIO); 669dad30e90SSteven Whitehouse ptr = page_address(page); 670dad30e90SSteven Whitehouse kaddr = kmap_atomic(bd2->bd_bh->b_page); 671dad30e90SSteven Whitehouse memcpy(ptr, kaddr + bh_offset(bd2->bd_bh), 672dad30e90SSteven Whitehouse bd2->bd_bh->b_size); 673dad30e90SSteven Whitehouse kunmap_atomic(kaddr); 674dad30e90SSteven Whitehouse *(__be32 *)ptr = 0; 675dad30e90SSteven Whitehouse clear_buffer_escaped(bd2->bd_bh); 676dad30e90SSteven Whitehouse unlock_buffer(bd2->bd_bh); 677dad30e90SSteven Whitehouse brelse(bd2->bd_bh); 678dad30e90SSteven Whitehouse gfs2_log_write_page(sdp, page); 679dad30e90SSteven Whitehouse } else { 680e8c92ed7SSteven Whitehouse gfs2_log_write_bh(sdp, bd2->bd_bh); 681dad30e90SSteven Whitehouse } 682905d2aefSBob Peterson gfs2_log_lock(sdp); 683b3b94faaSDavid Teigland if (++n >= num) 684b3b94faaSDavid Teigland break; 685b3b94faaSDavid Teigland } 686b3b94faaSDavid Teigland 687905d2aefSBob Peterson BUG_ON(total < num); 688b3b94faaSDavid Teigland total -= num; 689b3b94faaSDavid Teigland } 690905d2aefSBob Peterson gfs2_log_unlock(sdp); 691b3b94faaSDavid Teigland } 692b3b94faaSDavid Teigland 693d69a3c65SSteven Whitehouse static void buf_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 694dad30e90SSteven Whitehouse { 695dad30e90SSteven Whitehouse unsigned int limit = buf_limit(sdp); /* 503 for 4k blocks */ 696022ef4feSSteven Whitehouse unsigned int nbuf; 697d69a3c65SSteven Whitehouse if (tr == NULL) 698d69a3c65SSteven Whitehouse return; 699022ef4feSSteven Whitehouse nbuf = tr->tr_num_buf_new - tr->tr_num_buf_rm; 700022ef4feSSteven Whitehouse gfs2_before_commit(sdp, limit, nbuf, &tr->tr_buf, 0); 701dad30e90SSteven Whitehouse } 702dad30e90SSteven Whitehouse 70316ca9412SBenjamin Marzinski static void buf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 704b3b94faaSDavid Teigland { 705d69a3c65SSteven Whitehouse struct list_head *head; 706b3b94faaSDavid Teigland struct gfs2_bufdata *bd; 707b3b94faaSDavid Teigland 708d69a3c65SSteven Whitehouse if (tr == NULL) 70916ca9412SBenjamin Marzinski return; 71016ca9412SBenjamin Marzinski 711d69a3c65SSteven Whitehouse head = &tr->tr_buf; 712b3b94faaSDavid Teigland while (!list_empty(head)) { 713c0752aa7SBob Peterson bd = list_entry(head->next, struct gfs2_bufdata, bd_list); 714c0752aa7SBob Peterson list_del_init(&bd->bd_list); 71516ca9412SBenjamin Marzinski gfs2_unpin(sdp, bd->bd_bh, tr); 716b3b94faaSDavid Teigland } 717b3b94faaSDavid Teigland } 718b3b94faaSDavid Teigland 719b3b94faaSDavid Teigland static void buf_lo_before_scan(struct gfs2_jdesc *jd, 72055167622SAl Viro struct gfs2_log_header_host *head, int pass) 721b3b94faaSDavid Teigland { 722b3b94faaSDavid Teigland if (pass != 0) 723b3b94faaSDavid Teigland return; 724b3b94faaSDavid Teigland 725a17d758bSBob Peterson jd->jd_found_blocks = 0; 726a17d758bSBob Peterson jd->jd_replayed_blocks = 0; 727b3b94faaSDavid Teigland } 728b3b94faaSDavid Teigland 7297c70b896SBob Peterson static int buf_lo_scan_elements(struct gfs2_jdesc *jd, u32 start, 730b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld, __be64 *ptr, 731b3b94faaSDavid Teigland int pass) 732b3b94faaSDavid Teigland { 733feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 734feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 7355c676f6dSSteven Whitehouse struct gfs2_glock *gl = ip->i_gl; 736b3b94faaSDavid Teigland unsigned int blks = be32_to_cpu(ld->ld_data1); 737b3b94faaSDavid Teigland struct buffer_head *bh_log, *bh_ip; 738cd915493SSteven Whitehouse u64 blkno; 739b3b94faaSDavid Teigland int error = 0; 740b3b94faaSDavid Teigland 741b3b94faaSDavid Teigland if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_METADATA) 742b3b94faaSDavid Teigland return 0; 743b3b94faaSDavid Teigland 744e1cb6be9SBob Peterson gfs2_replay_incr_blk(jd, &start); 745b3b94faaSDavid Teigland 746e1cb6be9SBob Peterson for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { 747b3b94faaSDavid Teigland blkno = be64_to_cpu(*ptr++); 748b3b94faaSDavid Teigland 749a17d758bSBob Peterson jd->jd_found_blocks++; 750b3b94faaSDavid Teigland 751a17d758bSBob Peterson if (gfs2_revoke_check(jd, blkno, start)) 752b3b94faaSDavid Teigland continue; 753b3b94faaSDavid Teigland 754b3b94faaSDavid Teigland error = gfs2_replay_read_block(jd, start, &bh_log); 755b3b94faaSDavid Teigland if (error) 756b3b94faaSDavid Teigland return error; 757b3b94faaSDavid Teigland 758b3b94faaSDavid Teigland bh_ip = gfs2_meta_new(gl, blkno); 759b3b94faaSDavid Teigland memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); 760b3b94faaSDavid Teigland 761b3b94faaSDavid Teigland if (gfs2_meta_check(sdp, bh_ip)) 762b3b94faaSDavid Teigland error = -EIO; 763d14e1ca3SBob Peterson else { 764d14e1ca3SBob Peterson struct gfs2_meta_header *mh = 765d14e1ca3SBob Peterson (struct gfs2_meta_header *)bh_ip->b_data; 766b3b94faaSDavid Teigland 767d14e1ca3SBob Peterson if (mh->mh_type == cpu_to_be32(GFS2_METATYPE_RG)) { 768d14e1ca3SBob Peterson struct gfs2_rgrpd *rgd; 769d14e1ca3SBob Peterson 770d14e1ca3SBob Peterson rgd = gfs2_blk2rgrpd(sdp, blkno, false); 771d14e1ca3SBob Peterson if (rgd && rgd->rd_addr == blkno && 772d14e1ca3SBob Peterson rgd->rd_bits && rgd->rd_bits->bi_bh) { 773d14e1ca3SBob Peterson fs_info(sdp, "Replaying 0x%llx but we " 774d14e1ca3SBob Peterson "already have a bh!\n", 775d14e1ca3SBob Peterson (unsigned long long)blkno); 776d14e1ca3SBob Peterson fs_info(sdp, "busy:%d, pinned:%d\n", 777d14e1ca3SBob Peterson buffer_busy(rgd->rd_bits->bi_bh) ? 1 : 0, 778d14e1ca3SBob Peterson buffer_pinned(rgd->rd_bits->bi_bh)); 7793792ce97SBob Peterson gfs2_dump_glock(NULL, rgd->rd_gl, true); 780d14e1ca3SBob Peterson } 781d14e1ca3SBob Peterson } 782d14e1ca3SBob Peterson mark_buffer_dirty(bh_ip); 783d14e1ca3SBob Peterson } 784b3b94faaSDavid Teigland brelse(bh_log); 785b3b94faaSDavid Teigland brelse(bh_ip); 786b3b94faaSDavid Teigland 787b3b94faaSDavid Teigland if (error) 788b3b94faaSDavid Teigland break; 789b3b94faaSDavid Teigland 790a17d758bSBob Peterson jd->jd_replayed_blocks++; 791b3b94faaSDavid Teigland } 792b3b94faaSDavid Teigland 793b3b94faaSDavid Teigland return error; 794b3b94faaSDavid Teigland } 795b3b94faaSDavid Teigland 7967c0ef28aSSteven Whitehouse /** 7977c0ef28aSSteven Whitehouse * gfs2_meta_sync - Sync all buffers associated with a glock 7987c0ef28aSSteven Whitehouse * @gl: The glock 7997c0ef28aSSteven Whitehouse * 8007c0ef28aSSteven Whitehouse */ 8017c0ef28aSSteven Whitehouse 8027c0ef28aSSteven Whitehouse static void gfs2_meta_sync(struct gfs2_glock *gl) 8037c0ef28aSSteven Whitehouse { 8047c0ef28aSSteven Whitehouse struct address_space *mapping = gfs2_glock2aspace(gl); 80515562c43SBob Peterson struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; 8067c0ef28aSSteven Whitehouse int error; 8077c0ef28aSSteven Whitehouse 80870d4ee94SSteven Whitehouse if (mapping == NULL) 80970d4ee94SSteven Whitehouse mapping = &sdp->sd_aspace; 81070d4ee94SSteven Whitehouse 8117c0ef28aSSteven Whitehouse filemap_fdatawrite(mapping); 8127c0ef28aSSteven Whitehouse error = filemap_fdatawait(mapping); 8137c0ef28aSSteven Whitehouse 8147c0ef28aSSteven Whitehouse if (error) 81515562c43SBob Peterson gfs2_io_error(gl->gl_name.ln_sbd); 8167c0ef28aSSteven Whitehouse } 8177c0ef28aSSteven Whitehouse 818b3b94faaSDavid Teigland static void buf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 819b3b94faaSDavid Teigland { 820feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 821feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 822b3b94faaSDavid Teigland 823b3b94faaSDavid Teigland if (error) { 8247276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 825b3b94faaSDavid Teigland return; 826b3b94faaSDavid Teigland } 827b3b94faaSDavid Teigland if (pass != 1) 828b3b94faaSDavid Teigland return; 829b3b94faaSDavid Teigland 8307276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 831b3b94faaSDavid Teigland 832b3b94faaSDavid Teigland fs_info(sdp, "jid=%u: Replayed %u of %u blocks\n", 833a17d758bSBob Peterson jd->jd_jid, jd->jd_replayed_blocks, jd->jd_found_blocks); 834b3b94faaSDavid Teigland } 835b3b94faaSDavid Teigland 836d69a3c65SSteven Whitehouse static void revoke_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 837b3b94faaSDavid Teigland { 838b3b94faaSDavid Teigland struct gfs2_meta_header *mh; 839b3b94faaSDavid Teigland unsigned int offset; 840a5b1d3fcSAndreas Gruenbacher struct list_head *head = &sdp->sd_log_revokes; 84182e86087SSteven Whitehouse struct gfs2_bufdata *bd; 842e8c92ed7SSteven Whitehouse struct page *page; 843dad30e90SSteven Whitehouse unsigned int length; 844b3b94faaSDavid Teigland 8455d054964SBenjamin Marzinski gfs2_write_revokes(sdp); 846b3b94faaSDavid Teigland if (!sdp->sd_log_num_revoke) 847b3b94faaSDavid Teigland return; 848b3b94faaSDavid Teigland 849dad30e90SSteven Whitehouse length = gfs2_struct2blk(sdp, sdp->sd_log_num_revoke, sizeof(u64)); 850dad30e90SSteven Whitehouse page = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_REVOKE, length, sdp->sd_log_num_revoke); 851b3b94faaSDavid Teigland offset = sizeof(struct gfs2_log_descriptor); 852b3b94faaSDavid Teigland 853c0752aa7SBob Peterson list_for_each_entry(bd, head, bd_list) { 854b3b94faaSDavid Teigland sdp->sd_log_num_revoke--; 855b3b94faaSDavid Teigland 856cd915493SSteven Whitehouse if (offset + sizeof(u64) > sdp->sd_sb.sb_bsize) { 857b3b94faaSDavid Teigland 858e8c92ed7SSteven Whitehouse gfs2_log_write_page(sdp, page); 859e8c92ed7SSteven Whitehouse page = mempool_alloc(gfs2_page_pool, GFP_NOIO); 860e8c92ed7SSteven Whitehouse mh = page_address(page); 861e8c92ed7SSteven Whitehouse clear_page(mh); 862b3b94faaSDavid Teigland mh->mh_magic = cpu_to_be32(GFS2_MAGIC); 863e3167dedSSteven Whitehouse mh->mh_type = cpu_to_be32(GFS2_METATYPE_LB); 864e3167dedSSteven Whitehouse mh->mh_format = cpu_to_be32(GFS2_FORMAT_LB); 865b3b94faaSDavid Teigland offset = sizeof(struct gfs2_meta_header); 866b3b94faaSDavid Teigland } 867b3b94faaSDavid Teigland 868e8c92ed7SSteven Whitehouse *(__be64 *)(page_address(page) + offset) = cpu_to_be64(bd->bd_blkno); 869cd915493SSteven Whitehouse offset += sizeof(u64); 870b3b94faaSDavid Teigland } 871b3b94faaSDavid Teigland gfs2_assert_withdraw(sdp, !sdp->sd_log_num_revoke); 872b3b94faaSDavid Teigland 873e8c92ed7SSteven Whitehouse gfs2_log_write_page(sdp, page); 874b3b94faaSDavid Teigland } 875b3b94faaSDavid Teigland 87616ca9412SBenjamin Marzinski static void revoke_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 877f42ab085SSteven Whitehouse { 878a5b1d3fcSAndreas Gruenbacher struct list_head *head = &sdp->sd_log_revokes; 879638803d4SBob Peterson struct gfs2_bufdata *bd; 880638803d4SBob Peterson struct gfs2_glock *gl; 881f42ab085SSteven Whitehouse 882638803d4SBob Peterson while (!list_empty(head)) { 883638803d4SBob Peterson bd = list_entry(head->next, struct gfs2_bufdata, bd_list); 884638803d4SBob Peterson list_del_init(&bd->bd_list); 885638803d4SBob Peterson gl = bd->bd_gl; 886fe5e7ba1SBob Peterson gfs2_glock_remove_revoke(gl); 887638803d4SBob Peterson kmem_cache_free(gfs2_bufdata_cachep, bd); 888638803d4SBob Peterson } 889f42ab085SSteven Whitehouse } 890f42ab085SSteven Whitehouse 891b3b94faaSDavid Teigland static void revoke_lo_before_scan(struct gfs2_jdesc *jd, 89255167622SAl Viro struct gfs2_log_header_host *head, int pass) 893b3b94faaSDavid Teigland { 894b3b94faaSDavid Teigland if (pass != 0) 895b3b94faaSDavid Teigland return; 896b3b94faaSDavid Teigland 897a17d758bSBob Peterson jd->jd_found_revokes = 0; 898a17d758bSBob Peterson jd->jd_replay_tail = head->lh_tail; 899b3b94faaSDavid Teigland } 900b3b94faaSDavid Teigland 9017c70b896SBob Peterson static int revoke_lo_scan_elements(struct gfs2_jdesc *jd, u32 start, 902b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld, __be64 *ptr, 903b3b94faaSDavid Teigland int pass) 904b3b94faaSDavid Teigland { 905feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 906b3b94faaSDavid Teigland unsigned int blks = be32_to_cpu(ld->ld_length); 907b3b94faaSDavid Teigland unsigned int revokes = be32_to_cpu(ld->ld_data1); 908b3b94faaSDavid Teigland struct buffer_head *bh; 909b3b94faaSDavid Teigland unsigned int offset; 910cd915493SSteven Whitehouse u64 blkno; 911b3b94faaSDavid Teigland int first = 1; 912b3b94faaSDavid Teigland int error; 913b3b94faaSDavid Teigland 914b3b94faaSDavid Teigland if (pass != 0 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_REVOKE) 915b3b94faaSDavid Teigland return 0; 916b3b94faaSDavid Teigland 917b3b94faaSDavid Teigland offset = sizeof(struct gfs2_log_descriptor); 918b3b94faaSDavid Teigland 919e1cb6be9SBob Peterson for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { 920b3b94faaSDavid Teigland error = gfs2_replay_read_block(jd, start, &bh); 921b3b94faaSDavid Teigland if (error) 922b3b94faaSDavid Teigland return error; 923b3b94faaSDavid Teigland 924b3b94faaSDavid Teigland if (!first) 925b3b94faaSDavid Teigland gfs2_metatype_check(sdp, bh, GFS2_METATYPE_LB); 926b3b94faaSDavid Teigland 927cd915493SSteven Whitehouse while (offset + sizeof(u64) <= sdp->sd_sb.sb_bsize) { 928b3b94faaSDavid Teigland blkno = be64_to_cpu(*(__be64 *)(bh->b_data + offset)); 929b3b94faaSDavid Teigland 930a17d758bSBob Peterson error = gfs2_revoke_add(jd, blkno, start); 9313ad62e87SBob Peterson if (error < 0) { 9323ad62e87SBob Peterson brelse(bh); 933b3b94faaSDavid Teigland return error; 9343ad62e87SBob Peterson } 935b3b94faaSDavid Teigland else if (error) 936a17d758bSBob Peterson jd->jd_found_revokes++; 937b3b94faaSDavid Teigland 938b3b94faaSDavid Teigland if (!--revokes) 939b3b94faaSDavid Teigland break; 940cd915493SSteven Whitehouse offset += sizeof(u64); 941b3b94faaSDavid Teigland } 942b3b94faaSDavid Teigland 943b3b94faaSDavid Teigland brelse(bh); 944b3b94faaSDavid Teigland offset = sizeof(struct gfs2_meta_header); 945b3b94faaSDavid Teigland first = 0; 946b3b94faaSDavid Teigland } 947b3b94faaSDavid Teigland 948b3b94faaSDavid Teigland return 0; 949b3b94faaSDavid Teigland } 950b3b94faaSDavid Teigland 951b3b94faaSDavid Teigland static void revoke_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 952b3b94faaSDavid Teigland { 953feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 954b3b94faaSDavid Teigland 955b3b94faaSDavid Teigland if (error) { 956a17d758bSBob Peterson gfs2_revoke_clean(jd); 957b3b94faaSDavid Teigland return; 958b3b94faaSDavid Teigland } 959b3b94faaSDavid Teigland if (pass != 1) 960b3b94faaSDavid Teigland return; 961b3b94faaSDavid Teigland 962b3b94faaSDavid Teigland fs_info(sdp, "jid=%u: Found %u revoke tags\n", 963a17d758bSBob Peterson jd->jd_jid, jd->jd_found_revokes); 964b3b94faaSDavid Teigland 965a17d758bSBob Peterson gfs2_revoke_clean(jd); 966b3b94faaSDavid Teigland } 967b3b94faaSDavid Teigland 96818ec7d5cSSteven Whitehouse /** 96918ec7d5cSSteven Whitehouse * databuf_lo_before_commit - Scan the data buffers, writing as we go 97018ec7d5cSSteven Whitehouse * 97118ec7d5cSSteven Whitehouse */ 972d7b616e2SSteven Whitehouse 973d69a3c65SSteven Whitehouse static void databuf_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 974b3b94faaSDavid Teigland { 975022ef4feSSteven Whitehouse unsigned int limit = databuf_limit(sdp); 976022ef4feSSteven Whitehouse unsigned int nbuf; 977d69a3c65SSteven Whitehouse if (tr == NULL) 978d69a3c65SSteven Whitehouse return; 979022ef4feSSteven Whitehouse nbuf = tr->tr_num_databuf_new - tr->tr_num_databuf_rm; 980022ef4feSSteven Whitehouse gfs2_before_commit(sdp, limit, nbuf, &tr->tr_databuf, 1); 981b3b94faaSDavid Teigland } 982b3b94faaSDavid Teigland 9837c70b896SBob Peterson static int databuf_lo_scan_elements(struct gfs2_jdesc *jd, u32 start, 98418ec7d5cSSteven Whitehouse struct gfs2_log_descriptor *ld, 98518ec7d5cSSteven Whitehouse __be64 *ptr, int pass) 98618ec7d5cSSteven Whitehouse { 987feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 9885c676f6dSSteven Whitehouse struct gfs2_glock *gl = ip->i_gl; 98918ec7d5cSSteven Whitehouse unsigned int blks = be32_to_cpu(ld->ld_data1); 99018ec7d5cSSteven Whitehouse struct buffer_head *bh_log, *bh_ip; 991cd915493SSteven Whitehouse u64 blkno; 992cd915493SSteven Whitehouse u64 esc; 99318ec7d5cSSteven Whitehouse int error = 0; 99418ec7d5cSSteven Whitehouse 99518ec7d5cSSteven Whitehouse if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_JDATA) 99618ec7d5cSSteven Whitehouse return 0; 99718ec7d5cSSteven Whitehouse 998e1cb6be9SBob Peterson gfs2_replay_incr_blk(jd, &start); 999e1cb6be9SBob Peterson for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { 100018ec7d5cSSteven Whitehouse blkno = be64_to_cpu(*ptr++); 100118ec7d5cSSteven Whitehouse esc = be64_to_cpu(*ptr++); 100218ec7d5cSSteven Whitehouse 1003a17d758bSBob Peterson jd->jd_found_blocks++; 100418ec7d5cSSteven Whitehouse 1005a17d758bSBob Peterson if (gfs2_revoke_check(jd, blkno, start)) 100618ec7d5cSSteven Whitehouse continue; 100718ec7d5cSSteven Whitehouse 100818ec7d5cSSteven Whitehouse error = gfs2_replay_read_block(jd, start, &bh_log); 100918ec7d5cSSteven Whitehouse if (error) 101018ec7d5cSSteven Whitehouse return error; 101118ec7d5cSSteven Whitehouse 101218ec7d5cSSteven Whitehouse bh_ip = gfs2_meta_new(gl, blkno); 101318ec7d5cSSteven Whitehouse memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); 101418ec7d5cSSteven Whitehouse 101518ec7d5cSSteven Whitehouse /* Unescape */ 101618ec7d5cSSteven Whitehouse if (esc) { 101718ec7d5cSSteven Whitehouse __be32 *eptr = (__be32 *)bh_ip->b_data; 101818ec7d5cSSteven Whitehouse *eptr = cpu_to_be32(GFS2_MAGIC); 101918ec7d5cSSteven Whitehouse } 102018ec7d5cSSteven Whitehouse mark_buffer_dirty(bh_ip); 102118ec7d5cSSteven Whitehouse 102218ec7d5cSSteven Whitehouse brelse(bh_log); 102318ec7d5cSSteven Whitehouse brelse(bh_ip); 102418ec7d5cSSteven Whitehouse 1025a17d758bSBob Peterson jd->jd_replayed_blocks++; 102618ec7d5cSSteven Whitehouse } 102718ec7d5cSSteven Whitehouse 102818ec7d5cSSteven Whitehouse return error; 102918ec7d5cSSteven Whitehouse } 103018ec7d5cSSteven Whitehouse 103118ec7d5cSSteven Whitehouse /* FIXME: sort out accounting for log blocks etc. */ 103218ec7d5cSSteven Whitehouse 103318ec7d5cSSteven Whitehouse static void databuf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 103418ec7d5cSSteven Whitehouse { 1035feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 1036feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 103718ec7d5cSSteven Whitehouse 103818ec7d5cSSteven Whitehouse if (error) { 10397276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 104018ec7d5cSSteven Whitehouse return; 104118ec7d5cSSteven Whitehouse } 104218ec7d5cSSteven Whitehouse if (pass != 1) 104318ec7d5cSSteven Whitehouse return; 104418ec7d5cSSteven Whitehouse 104518ec7d5cSSteven Whitehouse /* data sync? */ 10467276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 104718ec7d5cSSteven Whitehouse 104818ec7d5cSSteven Whitehouse fs_info(sdp, "jid=%u: Replayed %u of %u data blocks\n", 1049a17d758bSBob Peterson jd->jd_jid, jd->jd_replayed_blocks, jd->jd_found_blocks); 105018ec7d5cSSteven Whitehouse } 105118ec7d5cSSteven Whitehouse 105216ca9412SBenjamin Marzinski static void databuf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 105318ec7d5cSSteven Whitehouse { 1054d69a3c65SSteven Whitehouse struct list_head *head; 105518ec7d5cSSteven Whitehouse struct gfs2_bufdata *bd; 105618ec7d5cSSteven Whitehouse 1057d69a3c65SSteven Whitehouse if (tr == NULL) 105816ca9412SBenjamin Marzinski return; 105916ca9412SBenjamin Marzinski 1060d69a3c65SSteven Whitehouse head = &tr->tr_databuf; 106118ec7d5cSSteven Whitehouse while (!list_empty(head)) { 1062c0752aa7SBob Peterson bd = list_entry(head->next, struct gfs2_bufdata, bd_list); 1063c0752aa7SBob Peterson list_del_init(&bd->bd_list); 106416ca9412SBenjamin Marzinski gfs2_unpin(sdp, bd->bd_bh, tr); 106518ec7d5cSSteven Whitehouse } 106618ec7d5cSSteven Whitehouse } 106718ec7d5cSSteven Whitehouse 106818ec7d5cSSteven Whitehouse 106932ac43f6SAndreas Gruenbacher static const struct gfs2_log_operations gfs2_buf_lops = { 1070b3b94faaSDavid Teigland .lo_before_commit = buf_lo_before_commit, 1071b3b94faaSDavid Teigland .lo_after_commit = buf_lo_after_commit, 1072b3b94faaSDavid Teigland .lo_before_scan = buf_lo_before_scan, 1073b3b94faaSDavid Teigland .lo_scan_elements = buf_lo_scan_elements, 1074b3b94faaSDavid Teigland .lo_after_scan = buf_lo_after_scan, 1075ea67eedbSSteven Whitehouse .lo_name = "buf", 1076b3b94faaSDavid Teigland }; 1077b3b94faaSDavid Teigland 107832ac43f6SAndreas Gruenbacher static const struct gfs2_log_operations gfs2_revoke_lops = { 1079b3b94faaSDavid Teigland .lo_before_commit = revoke_lo_before_commit, 1080f42ab085SSteven Whitehouse .lo_after_commit = revoke_lo_after_commit, 1081b3b94faaSDavid Teigland .lo_before_scan = revoke_lo_before_scan, 1082b3b94faaSDavid Teigland .lo_scan_elements = revoke_lo_scan_elements, 1083b3b94faaSDavid Teigland .lo_after_scan = revoke_lo_after_scan, 1084ea67eedbSSteven Whitehouse .lo_name = "revoke", 1085b3b94faaSDavid Teigland }; 1086b3b94faaSDavid Teigland 108732ac43f6SAndreas Gruenbacher static const struct gfs2_log_operations gfs2_databuf_lops = { 1088b3b94faaSDavid Teigland .lo_before_commit = databuf_lo_before_commit, 108918ec7d5cSSteven Whitehouse .lo_after_commit = databuf_lo_after_commit, 109018ec7d5cSSteven Whitehouse .lo_scan_elements = databuf_lo_scan_elements, 109118ec7d5cSSteven Whitehouse .lo_after_scan = databuf_lo_after_scan, 1092ea67eedbSSteven Whitehouse .lo_name = "databuf", 1093b3b94faaSDavid Teigland }; 1094b3b94faaSDavid Teigland 1095b09e593dSSteven Whitehouse const struct gfs2_log_operations *gfs2_log_ops[] = { 1096b3b94faaSDavid Teigland &gfs2_databuf_lops, 109716615be1SSteven Whitehouse &gfs2_buf_lops, 109816615be1SSteven Whitehouse &gfs2_revoke_lops, 1099ea67eedbSSteven Whitehouse NULL, 1100b3b94faaSDavid Teigland }; 1101b3b94faaSDavid Teigland 1102