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" 254a55752aSBob Peterson #include "glops.h" 26b3b94faaSDavid Teigland #include "log.h" 27b3b94faaSDavid Teigland #include "lops.h" 28b3b94faaSDavid Teigland #include "meta_io.h" 29b3b94faaSDavid Teigland #include "recovery.h" 30b3b94faaSDavid Teigland #include "rgrp.h" 31b3b94faaSDavid Teigland #include "trans.h" 325c676f6dSSteven Whitehouse #include "util.h" 3363997775SSteven Whitehouse #include "trace_gfs2.h" 34b3b94faaSDavid Teigland 359b9107a5SSteven Whitehouse /** 369b9107a5SSteven Whitehouse * gfs2_pin - Pin a buffer in memory 379b9107a5SSteven Whitehouse * @sdp: The superblock 389b9107a5SSteven Whitehouse * @bh: The buffer to be pinned 399b9107a5SSteven Whitehouse * 409b9107a5SSteven Whitehouse * The log lock must be held when calling this function 419b9107a5SSteven Whitehouse */ 42767f433fSSteven Whitehouse void gfs2_pin(struct gfs2_sbd *sdp, struct buffer_head *bh) 439b9107a5SSteven Whitehouse { 449b9107a5SSteven Whitehouse struct gfs2_bufdata *bd; 459b9107a5SSteven Whitehouse 4629687a2aSSteven Whitehouse BUG_ON(!current->journal_info); 479b9107a5SSteven Whitehouse 489b9107a5SSteven Whitehouse clear_buffer_dirty(bh); 499b9107a5SSteven Whitehouse if (test_set_buffer_pinned(bh)) 509b9107a5SSteven Whitehouse gfs2_assert_withdraw(sdp, 0); 519b9107a5SSteven Whitehouse if (!buffer_uptodate(bh)) 529e1a9ecdSAndreas Gruenbacher gfs2_io_error_bh_wd(sdp, bh); 539b9107a5SSteven Whitehouse bd = bh->b_private; 549b9107a5SSteven Whitehouse /* If this buffer is in the AIL and it has already been written 559b9107a5SSteven Whitehouse * to in-place disk block, remove it from the AIL. 569b9107a5SSteven Whitehouse */ 57c618e87aSSteven Whitehouse spin_lock(&sdp->sd_ail_lock); 5816ca9412SBenjamin Marzinski if (bd->bd_tr) 5916ca9412SBenjamin Marzinski list_move(&bd->bd_ail_st_list, &bd->bd_tr->tr_ail2_list); 60c618e87aSSteven Whitehouse spin_unlock(&sdp->sd_ail_lock); 619b9107a5SSteven Whitehouse get_bh(bh); 625e687eacSBenjamin Marzinski atomic_inc(&sdp->sd_log_pinned); 6363997775SSteven Whitehouse trace_gfs2_pin(bd, 1); 649b9107a5SSteven Whitehouse } 659b9107a5SSteven Whitehouse 667c9ca621SBob Peterson static bool buffer_is_rgrp(const struct gfs2_bufdata *bd) 677c9ca621SBob Peterson { 687c9ca621SBob Peterson return bd->bd_gl->gl_name.ln_type == LM_TYPE_RGRP; 697c9ca621SBob Peterson } 707c9ca621SBob Peterson 717c9ca621SBob Peterson static void maybe_release_space(struct gfs2_bufdata *bd) 727c9ca621SBob Peterson { 737c9ca621SBob Peterson struct gfs2_glock *gl = bd->bd_gl; 7415562c43SBob Peterson struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; 756f6597baSAndreas Gruenbacher struct gfs2_rgrpd *rgd = gfs2_glock2rgrp(gl); 767c9ca621SBob Peterson unsigned int index = bd->bd_bh->b_blocknr - gl->gl_name.ln_number; 777c9ca621SBob Peterson struct gfs2_bitmap *bi = rgd->rd_bits + index; 787c9ca621SBob Peterson 795a7c6690SFabian Frederick if (bi->bi_clone == NULL) 807c9ca621SBob Peterson return; 817c9ca621SBob Peterson if (sdp->sd_args.ar_discard) 8266fc061bSSteven Whitehouse gfs2_rgrp_send_discards(sdp, rgd->rd_data0, bd->bd_bh, bi, 1, NULL); 837c9ca621SBob Peterson memcpy(bi->bi_clone + bi->bi_offset, 84281b4952SAndreas Gruenbacher bd->bd_bh->b_data + bi->bi_offset, bi->bi_bytes); 857c9ca621SBob Peterson clear_bit(GBF_FULL, &bi->bi_flags); 867c9ca621SBob Peterson rgd->rd_free_clone = rgd->rd_free; 87*725d0e9dSAndreas Gruenbacher BUG_ON(rgd->rd_free_clone < rgd->rd_reserved); 885ea5050cSBob Peterson rgd->rd_extfail_pt = rgd->rd_free; 897c9ca621SBob Peterson } 907c9ca621SBob Peterson 919b9107a5SSteven Whitehouse /** 929b9107a5SSteven Whitehouse * gfs2_unpin - Unpin a buffer 939b9107a5SSteven Whitehouse * @sdp: the filesystem the buffer belongs to 949b9107a5SSteven Whitehouse * @bh: The buffer to unpin 959b9107a5SSteven Whitehouse * @ai: 9629687a2aSSteven Whitehouse * @flags: The inode dirty flags 979b9107a5SSteven Whitehouse * 989b9107a5SSteven Whitehouse */ 999b9107a5SSteven Whitehouse 1009b9107a5SSteven Whitehouse static void gfs2_unpin(struct gfs2_sbd *sdp, struct buffer_head *bh, 10116ca9412SBenjamin Marzinski struct gfs2_trans *tr) 1029b9107a5SSteven Whitehouse { 1039b9107a5SSteven Whitehouse struct gfs2_bufdata *bd = bh->b_private; 1049b9107a5SSteven Whitehouse 10529687a2aSSteven Whitehouse BUG_ON(!buffer_uptodate(bh)); 10629687a2aSSteven Whitehouse BUG_ON(!buffer_pinned(bh)); 1079b9107a5SSteven Whitehouse 1089b9107a5SSteven Whitehouse lock_buffer(bh); 1099b9107a5SSteven Whitehouse mark_buffer_dirty(bh); 1109b9107a5SSteven Whitehouse clear_buffer_pinned(bh); 1119b9107a5SSteven Whitehouse 1127c9ca621SBob Peterson if (buffer_is_rgrp(bd)) 1137c9ca621SBob Peterson maybe_release_space(bd); 1147c9ca621SBob Peterson 115d6a079e8SDave Chinner spin_lock(&sdp->sd_ail_lock); 11616ca9412SBenjamin Marzinski if (bd->bd_tr) { 1179b9107a5SSteven Whitehouse list_del(&bd->bd_ail_st_list); 1189b9107a5SSteven Whitehouse brelse(bh); 1199b9107a5SSteven Whitehouse } else { 1209b9107a5SSteven Whitehouse struct gfs2_glock *gl = bd->bd_gl; 1219b9107a5SSteven Whitehouse list_add(&bd->bd_ail_gl_list, &gl->gl_ail_list); 1229b9107a5SSteven Whitehouse atomic_inc(&gl->gl_ail_count); 1239b9107a5SSteven Whitehouse } 12416ca9412SBenjamin Marzinski bd->bd_tr = tr; 12516ca9412SBenjamin Marzinski list_add(&bd->bd_ail_st_list, &tr->tr_ail1_list); 126d6a079e8SDave Chinner spin_unlock(&sdp->sd_ail_lock); 127d6a079e8SDave Chinner 12829687a2aSSteven Whitehouse clear_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags); 12963997775SSteven Whitehouse trace_gfs2_pin(bd, 0); 1309b9107a5SSteven Whitehouse unlock_buffer(bh); 1315e687eacSBenjamin Marzinski atomic_dec(&sdp->sd_log_pinned); 1329b9107a5SSteven Whitehouse } 1339b9107a5SSteven Whitehouse 13419ebc050SAndreas Gruenbacher void gfs2_log_incr_head(struct gfs2_sbd *sdp) 13516615be1SSteven Whitehouse { 136e8c92ed7SSteven Whitehouse BUG_ON((sdp->sd_log_flush_head == sdp->sd_log_tail) && 137e8c92ed7SSteven Whitehouse (sdp->sd_log_flush_head != sdp->sd_log_head)); 138e8c92ed7SSteven Whitehouse 139722f6f62SBob Peterson if (++sdp->sd_log_flush_head == sdp->sd_jdesc->jd_blocks) 140e8c92ed7SSteven Whitehouse sdp->sd_log_flush_head = 0; 14116615be1SSteven Whitehouse } 14216615be1SSteven Whitehouse 14319ebc050SAndreas Gruenbacher u64 gfs2_log_bmap(struct gfs2_jdesc *jd, unsigned int lblock) 14416615be1SSteven Whitehouse { 145e8c92ed7SSteven Whitehouse struct gfs2_journal_extent *je; 14616615be1SSteven Whitehouse 14719ebc050SAndreas Gruenbacher list_for_each_entry(je, &jd->extent_list, list) { 14819ebc050SAndreas Gruenbacher if (lblock >= je->lblock && lblock < je->lblock + je->blocks) 14919ebc050SAndreas Gruenbacher return je->dblock + lblock - je->lblock; 150e8c92ed7SSteven Whitehouse } 15147ac5537SSteven Whitehouse 152e8c92ed7SSteven Whitehouse return -1; 15347ac5537SSteven Whitehouse } 15447ac5537SSteven Whitehouse 15547ac5537SSteven Whitehouse /** 156e8c92ed7SSteven Whitehouse * gfs2_end_log_write_bh - end log write of pagecache data with buffers 157e8c92ed7SSteven Whitehouse * @sdp: The superblock 158e8c92ed7SSteven Whitehouse * @bvec: The bio_vec 159e8c92ed7SSteven Whitehouse * @error: The i/o status 160e8c92ed7SSteven Whitehouse * 1614519eaadSBob Peterson * This finds the relevant buffers and unlocks them and sets the 162e8c92ed7SSteven Whitehouse * error flag according to the status of the i/o request. This is 163e8c92ed7SSteven Whitehouse * used when the log is writing data which has an in-place version 164e8c92ed7SSteven Whitehouse * that is pinned in the pagecache. 165e8c92ed7SSteven Whitehouse */ 166e8c92ed7SSteven Whitehouse 1676dc4f100SMing Lei static void gfs2_end_log_write_bh(struct gfs2_sbd *sdp, 1686dc4f100SMing Lei struct bio_vec *bvec, 1694e4cbee9SChristoph Hellwig blk_status_t error) 170e8c92ed7SSteven Whitehouse { 171e8c92ed7SSteven Whitehouse struct buffer_head *bh, *next; 172e8c92ed7SSteven Whitehouse struct page *page = bvec->bv_page; 173e8c92ed7SSteven Whitehouse unsigned size; 174e8c92ed7SSteven Whitehouse 175e8c92ed7SSteven Whitehouse bh = page_buffers(page); 176e8c92ed7SSteven Whitehouse size = bvec->bv_len; 177e8c92ed7SSteven Whitehouse while (bh_offset(bh) < bvec->bv_offset) 178e8c92ed7SSteven Whitehouse bh = bh->b_this_page; 179e8c92ed7SSteven Whitehouse do { 180e8c92ed7SSteven Whitehouse if (error) 18187354e5dSJeff Layton mark_buffer_write_io_error(bh); 182e8c92ed7SSteven Whitehouse unlock_buffer(bh); 183e8c92ed7SSteven Whitehouse next = bh->b_this_page; 184e8c92ed7SSteven Whitehouse size -= bh->b_size; 185e8c92ed7SSteven Whitehouse brelse(bh); 186e8c92ed7SSteven Whitehouse bh = next; 187e8c92ed7SSteven Whitehouse } while(bh && size); 188e8c92ed7SSteven Whitehouse } 189e8c92ed7SSteven Whitehouse 190e8c92ed7SSteven Whitehouse /** 191e8c92ed7SSteven Whitehouse * gfs2_end_log_write - end of i/o to the log 192e8c92ed7SSteven Whitehouse * @bio: The bio 193e8c92ed7SSteven Whitehouse * 194e8c92ed7SSteven Whitehouse * Each bio_vec contains either data from the pagecache or data 195e8c92ed7SSteven Whitehouse * relating to the log itself. Here we iterate over the bio_vec 196e8c92ed7SSteven Whitehouse * array, processing both kinds of data. 19747ac5537SSteven Whitehouse * 19847ac5537SSteven Whitehouse */ 19947ac5537SSteven Whitehouse 2004246a0b6SChristoph Hellwig static void gfs2_end_log_write(struct bio *bio) 20147ac5537SSteven Whitehouse { 202e8c92ed7SSteven Whitehouse struct gfs2_sbd *sdp = bio->bi_private; 203e8c92ed7SSteven Whitehouse struct bio_vec *bvec; 204e8c92ed7SSteven Whitehouse struct page *page; 2056dc4f100SMing Lei struct bvec_iter_all iter_all; 20647ac5537SSteven Whitehouse 207942b0cddSBob Peterson if (bio->bi_status) { 208f34a6135SBob Peterson if (!cmpxchg(&sdp->sd_log_error, 0, (int)bio->bi_status)) 209942b0cddSBob Peterson fs_err(sdp, "Error %d writing to journal, jid=%u\n", 210942b0cddSBob Peterson bio->bi_status, sdp->sd_jdesc->jd_jid); 211f05b86dbSBob Peterson gfs2_withdraw_delayed(sdp); 212f05b86dbSBob Peterson /* prevent more writes to the journal */ 213f05b86dbSBob Peterson clear_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags); 214942b0cddSBob Peterson wake_up(&sdp->sd_logd_waitq); 215942b0cddSBob Peterson } 216e8c92ed7SSteven Whitehouse 2172b070cfeSChristoph Hellwig bio_for_each_segment_all(bvec, bio, iter_all) { 218e8c92ed7SSteven Whitehouse page = bvec->bv_page; 219e8c92ed7SSteven Whitehouse if (page_has_buffers(page)) 2204e4cbee9SChristoph Hellwig gfs2_end_log_write_bh(sdp, bvec, bio->bi_status); 221e8c92ed7SSteven Whitehouse else 222e8c92ed7SSteven Whitehouse mempool_free(page, gfs2_page_pool); 223e8c92ed7SSteven Whitehouse } 224e8c92ed7SSteven Whitehouse 225e8c92ed7SSteven Whitehouse bio_put(bio); 22647ac5537SSteven Whitehouse if (atomic_dec_and_test(&sdp->sd_log_in_flight)) 22747ac5537SSteven Whitehouse wake_up(&sdp->sd_log_flush_wait); 22847ac5537SSteven Whitehouse } 22947ac5537SSteven Whitehouse 23047ac5537SSteven Whitehouse /** 2315b846095SAbhi Das * gfs2_log_submit_bio - Submit any pending log bio 2325b846095SAbhi Das * @biop: Address of the bio pointer 233f4686c26SAbhi Das * @opf: REQ_OP | op_flags 234e8c92ed7SSteven Whitehouse * 235e8c92ed7SSteven Whitehouse * Submit any pending part-built or full bio to the block device. If 236e8c92ed7SSteven Whitehouse * there is no pending bio, then this is a no-op. 237e8c92ed7SSteven Whitehouse */ 238e8c92ed7SSteven Whitehouse 239f4686c26SAbhi Das void gfs2_log_submit_bio(struct bio **biop, int opf) 240e8c92ed7SSteven Whitehouse { 2415b846095SAbhi Das struct bio *bio = *biop; 2425b846095SAbhi Das if (bio) { 2435b846095SAbhi Das struct gfs2_sbd *sdp = bio->bi_private; 244e8c92ed7SSteven Whitehouse atomic_inc(&sdp->sd_log_in_flight); 245f4686c26SAbhi Das bio->bi_opf = opf; 2465b846095SAbhi Das submit_bio(bio); 2475b846095SAbhi Das *biop = NULL; 248e8c92ed7SSteven Whitehouse } 249e8c92ed7SSteven Whitehouse } 250e8c92ed7SSteven Whitehouse 251e8c92ed7SSteven Whitehouse /** 2525b846095SAbhi Das * gfs2_log_alloc_bio - Allocate a bio 253e8c92ed7SSteven Whitehouse * @sdp: The super block 2545b846095SAbhi Das * @blkno: The device block number we want to write to 2555b846095SAbhi Das * @end_io: The bi_end_io callback 256e8c92ed7SSteven Whitehouse * 2575b846095SAbhi Das * Allocate a new bio, initialize it with the given parameters and return it. 258e8c92ed7SSteven Whitehouse * 2595b846095SAbhi Das * Returns: The newly allocated bio 260e8c92ed7SSteven Whitehouse */ 261e8c92ed7SSteven Whitehouse 2625b846095SAbhi Das static struct bio *gfs2_log_alloc_bio(struct gfs2_sbd *sdp, u64 blkno, 2635b846095SAbhi Das bio_end_io_t *end_io) 264e8c92ed7SSteven Whitehouse { 265e8c92ed7SSteven Whitehouse struct super_block *sb = sdp->sd_vfs; 2665b846095SAbhi Das struct bio *bio = bio_alloc(GFP_NOIO, BIO_MAX_PAGES); 267e8c92ed7SSteven Whitehouse 268aa83da7fSAndreas Gruenbacher bio->bi_iter.bi_sector = blkno << sdp->sd_fsb2bb_shift; 26974d46992SChristoph Hellwig bio_set_dev(bio, sb->s_bdev); 2705b846095SAbhi Das bio->bi_end_io = end_io; 271e8c92ed7SSteven Whitehouse bio->bi_private = sdp; 272e8c92ed7SSteven Whitehouse 273e8c92ed7SSteven Whitehouse return bio; 274e8c92ed7SSteven Whitehouse } 275e8c92ed7SSteven Whitehouse 276e8c92ed7SSteven Whitehouse /** 277e8c92ed7SSteven Whitehouse * gfs2_log_get_bio - Get cached log bio, or allocate a new one 278e8c92ed7SSteven Whitehouse * @sdp: The super block 279e8c92ed7SSteven Whitehouse * @blkno: The device block number we want to write to 2805b846095SAbhi Das * @bio: The bio to get or allocate 2815b846095SAbhi Das * @op: REQ_OP 2825b846095SAbhi Das * @end_io: The bi_end_io callback 2835b846095SAbhi Das * @flush: Always flush the current bio and allocate a new one? 284e8c92ed7SSteven Whitehouse * 285e8c92ed7SSteven Whitehouse * If there is a cached bio, then if the next block number is sequential 286e8c92ed7SSteven Whitehouse * with the previous one, return it, otherwise flush the bio to the 2875b846095SAbhi Das * device. If there is no cached bio, or we just flushed it, then 288e8c92ed7SSteven Whitehouse * allocate a new one. 289e8c92ed7SSteven Whitehouse * 290e8c92ed7SSteven Whitehouse * Returns: The bio to use for log writes 291e8c92ed7SSteven Whitehouse */ 292e8c92ed7SSteven Whitehouse 2935b846095SAbhi Das static struct bio *gfs2_log_get_bio(struct gfs2_sbd *sdp, u64 blkno, 2945b846095SAbhi Das struct bio **biop, int op, 2955b846095SAbhi Das bio_end_io_t *end_io, bool flush) 296e8c92ed7SSteven Whitehouse { 2975b846095SAbhi Das struct bio *bio = *biop; 298e8c92ed7SSteven Whitehouse 299e8c92ed7SSteven Whitehouse if (bio) { 3005b846095SAbhi Das u64 nblk; 3015b846095SAbhi Das 302f73a1c7dSKent Overstreet nblk = bio_end_sector(bio); 303e8c92ed7SSteven Whitehouse nblk >>= sdp->sd_fsb2bb_shift; 3045b846095SAbhi Das if (blkno == nblk && !flush) 305e8c92ed7SSteven Whitehouse return bio; 306f4686c26SAbhi Das gfs2_log_submit_bio(biop, op); 307e8c92ed7SSteven Whitehouse } 308e8c92ed7SSteven Whitehouse 3095b846095SAbhi Das *biop = gfs2_log_alloc_bio(sdp, blkno, end_io); 3105b846095SAbhi Das return *biop; 311e8c92ed7SSteven Whitehouse } 312e8c92ed7SSteven Whitehouse 313e8c92ed7SSteven Whitehouse /** 314e8c92ed7SSteven Whitehouse * gfs2_log_write - write to log 31547ac5537SSteven Whitehouse * @sdp: the filesystem 316e8c92ed7SSteven Whitehouse * @page: the page to write 317e8c92ed7SSteven Whitehouse * @size: the size of the data to write 318e8c92ed7SSteven Whitehouse * @offset: the offset within the page 319c1696fb8SBob Peterson * @blkno: block number of the log entry 32047ac5537SSteven Whitehouse * 321e8c92ed7SSteven Whitehouse * Try and add the page segment to the current bio. If that fails, 322e8c92ed7SSteven Whitehouse * submit the current bio to the device and create a new one, and 323e8c92ed7SSteven Whitehouse * then add the page segment to that. 32447ac5537SSteven Whitehouse */ 32547ac5537SSteven Whitehouse 326c1696fb8SBob Peterson void gfs2_log_write(struct gfs2_sbd *sdp, struct page *page, 327c1696fb8SBob Peterson unsigned size, unsigned offset, u64 blkno) 32847ac5537SSteven Whitehouse { 329e8c92ed7SSteven Whitehouse struct bio *bio; 330e8c92ed7SSteven Whitehouse int ret; 33147ac5537SSteven Whitehouse 3325b846095SAbhi Das bio = gfs2_log_get_bio(sdp, blkno, &sdp->sd_log_bio, REQ_OP_WRITE, 3335b846095SAbhi Das gfs2_end_log_write, false); 334e8c92ed7SSteven Whitehouse ret = bio_add_page(bio, page, size, offset); 335e8c92ed7SSteven Whitehouse if (ret == 0) { 3365b846095SAbhi Das bio = gfs2_log_get_bio(sdp, blkno, &sdp->sd_log_bio, 3375b846095SAbhi Das REQ_OP_WRITE, gfs2_end_log_write, true); 338e8c92ed7SSteven Whitehouse ret = bio_add_page(bio, page, size, offset); 339e8c92ed7SSteven Whitehouse WARN_ON(ret == 0); 340e8c92ed7SSteven Whitehouse } 34147ac5537SSteven Whitehouse } 34216615be1SSteven Whitehouse 343e8c92ed7SSteven Whitehouse /** 344e8c92ed7SSteven Whitehouse * gfs2_log_write_bh - write a buffer's content to the log 345e8c92ed7SSteven Whitehouse * @sdp: The super block 346e8c92ed7SSteven Whitehouse * @bh: The buffer pointing to the in-place location 347e8c92ed7SSteven Whitehouse * 348e8c92ed7SSteven Whitehouse * This writes the content of the buffer to the next available location 349e8c92ed7SSteven Whitehouse * in the log. The buffer will be unlocked once the i/o to the log has 350e8c92ed7SSteven Whitehouse * completed. 351e8c92ed7SSteven Whitehouse */ 352e8c92ed7SSteven Whitehouse 353e8c92ed7SSteven Whitehouse static void gfs2_log_write_bh(struct gfs2_sbd *sdp, struct buffer_head *bh) 35416615be1SSteven Whitehouse { 35519ebc050SAndreas Gruenbacher u64 dblock; 35619ebc050SAndreas Gruenbacher 35719ebc050SAndreas Gruenbacher dblock = gfs2_log_bmap(sdp->sd_jdesc, sdp->sd_log_flush_head); 35819ebc050SAndreas Gruenbacher gfs2_log_incr_head(sdp); 35919ebc050SAndreas Gruenbacher gfs2_log_write(sdp, bh->b_page, bh->b_size, bh_offset(bh), dblock); 360e8c92ed7SSteven Whitehouse } 361e8c92ed7SSteven Whitehouse 362e8c92ed7SSteven Whitehouse /** 363e8c92ed7SSteven Whitehouse * gfs2_log_write_page - write one block stored in a page, into the log 364e8c92ed7SSteven Whitehouse * @sdp: The superblock 365e8c92ed7SSteven Whitehouse * @page: The struct page 366e8c92ed7SSteven Whitehouse * 367e8c92ed7SSteven Whitehouse * This writes the first block-sized part of the page into the log. Note 368e8c92ed7SSteven Whitehouse * that the page must have been allocated from the gfs2_page_pool mempool 369e8c92ed7SSteven Whitehouse * and that after this has been called, ownership has been transferred and 370e8c92ed7SSteven Whitehouse * the page may be freed at any time. 371e8c92ed7SSteven Whitehouse */ 372e8c92ed7SSteven Whitehouse 373e8c92ed7SSteven Whitehouse void gfs2_log_write_page(struct gfs2_sbd *sdp, struct page *page) 374e8c92ed7SSteven Whitehouse { 375e8c92ed7SSteven Whitehouse struct super_block *sb = sdp->sd_vfs; 37619ebc050SAndreas Gruenbacher u64 dblock; 37719ebc050SAndreas Gruenbacher 37819ebc050SAndreas Gruenbacher dblock = gfs2_log_bmap(sdp->sd_jdesc, sdp->sd_log_flush_head); 37919ebc050SAndreas Gruenbacher gfs2_log_incr_head(sdp); 38019ebc050SAndreas Gruenbacher gfs2_log_write(sdp, page, sb->s_blocksize, 0, dblock); 381e8c92ed7SSteven Whitehouse } 382e8c92ed7SSteven Whitehouse 383f4686c26SAbhi Das /** 384f4686c26SAbhi Das * gfs2_end_log_read - end I/O callback for reads from the log 385f4686c26SAbhi Das * @bio: The bio 386f4686c26SAbhi Das * 387f4686c26SAbhi Das * Simply unlock the pages in the bio. The main thread will wait on them and 388f4686c26SAbhi Das * process them in order as necessary. 389f4686c26SAbhi Das */ 390f4686c26SAbhi Das 391f4686c26SAbhi Das static void gfs2_end_log_read(struct bio *bio) 392f4686c26SAbhi Das { 393f4686c26SAbhi Das struct page *page; 394f4686c26SAbhi Das struct bio_vec *bvec; 395f4686c26SAbhi Das struct bvec_iter_all iter_all; 396f4686c26SAbhi Das 397ef75bd71SLinus Torvalds bio_for_each_segment_all(bvec, bio, iter_all) { 398f4686c26SAbhi Das page = bvec->bv_page; 399f4686c26SAbhi Das if (bio->bi_status) { 400f4686c26SAbhi Das int err = blk_status_to_errno(bio->bi_status); 401f4686c26SAbhi Das 402f4686c26SAbhi Das SetPageError(page); 403f4686c26SAbhi Das mapping_set_error(page->mapping, err); 404f4686c26SAbhi Das } 405f4686c26SAbhi Das unlock_page(page); 406f4686c26SAbhi Das } 407f4686c26SAbhi Das 408f4686c26SAbhi Das bio_put(bio); 409f4686c26SAbhi Das } 410f4686c26SAbhi Das 411f4686c26SAbhi Das /** 412f4686c26SAbhi Das * gfs2_jhead_pg_srch - Look for the journal head in a given page. 413f4686c26SAbhi Das * @jd: The journal descriptor 414f4686c26SAbhi Das * @page: The page to look in 415f4686c26SAbhi Das * 416f4686c26SAbhi Das * Returns: 1 if found, 0 otherwise. 417f4686c26SAbhi Das */ 418f4686c26SAbhi Das 419f4686c26SAbhi Das static bool gfs2_jhead_pg_srch(struct gfs2_jdesc *jd, 420f4686c26SAbhi Das struct gfs2_log_header_host *head, 421f4686c26SAbhi Das struct page *page) 422f4686c26SAbhi Das { 423f4686c26SAbhi Das struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 4243f649ab7SKees Cook struct gfs2_log_header_host lh; 425f4686c26SAbhi Das void *kaddr = kmap_atomic(page); 426f4686c26SAbhi Das unsigned int offset; 427f4686c26SAbhi Das bool ret = false; 428f4686c26SAbhi Das 429f4686c26SAbhi Das for (offset = 0; offset < PAGE_SIZE; offset += sdp->sd_sb.sb_bsize) { 430f4686c26SAbhi Das if (!__get_log_header(sdp, kaddr + offset, 0, &lh)) { 4317582026fSAbhi Das if (lh.lh_sequence >= head->lh_sequence) 432f4686c26SAbhi Das *head = lh; 433f4686c26SAbhi Das else { 434f4686c26SAbhi Das ret = true; 435f4686c26SAbhi Das break; 436f4686c26SAbhi Das } 437f4686c26SAbhi Das } 438f4686c26SAbhi Das } 439f4686c26SAbhi Das kunmap_atomic(kaddr); 440f4686c26SAbhi Das return ret; 441f4686c26SAbhi Das } 442f4686c26SAbhi Das 443f4686c26SAbhi Das /** 444f4686c26SAbhi Das * gfs2_jhead_process_page - Search/cleanup a page 445f4686c26SAbhi Das * @jd: The journal descriptor 446f4686c26SAbhi Das * @index: Index of the page to look into 447f4686c26SAbhi Das * @done: If set, perform only cleanup, else search and set if found. 448f4686c26SAbhi Das * 449f4686c26SAbhi Das * Find the page with 'index' in the journal's mapping. Search the page for 450f4686c26SAbhi Das * the journal head if requested (cleanup == false). Release refs on the 451f4686c26SAbhi Das * page so the page cache can reclaim it (put_page() twice). We grabbed a 452f4686c26SAbhi Das * reference on this page two times, first when we did a find_or_create_page() 453f4686c26SAbhi Das * to obtain the page to add it to the bio and second when we do a 454f4686c26SAbhi Das * find_get_page() here to get the page to wait on while I/O on it is being 455f4686c26SAbhi Das * completed. 456f4686c26SAbhi Das * This function is also used to free up a page we might've grabbed but not 457f4686c26SAbhi Das * used. Maybe we added it to a bio, but not submitted it for I/O. Or we 458f4686c26SAbhi Das * submitted the I/O, but we already found the jhead so we only need to drop 459f4686c26SAbhi Das * our references to the page. 460f4686c26SAbhi Das */ 461f4686c26SAbhi Das 462f4686c26SAbhi Das static void gfs2_jhead_process_page(struct gfs2_jdesc *jd, unsigned long index, 463f4686c26SAbhi Das struct gfs2_log_header_host *head, 464f4686c26SAbhi Das bool *done) 465f4686c26SAbhi Das { 466f4686c26SAbhi Das struct page *page; 467f4686c26SAbhi Das 468f4686c26SAbhi Das page = find_get_page(jd->jd_inode->i_mapping, index); 469f4686c26SAbhi Das wait_on_page_locked(page); 470f4686c26SAbhi Das 471f4686c26SAbhi Das if (PageError(page)) 472f4686c26SAbhi Das *done = true; 473f4686c26SAbhi Das 474f4686c26SAbhi Das if (!*done) 475f4686c26SAbhi Das *done = gfs2_jhead_pg_srch(jd, head, page); 476f4686c26SAbhi Das 477f4686c26SAbhi Das put_page(page); /* Once for find_get_page */ 478f4686c26SAbhi Das put_page(page); /* Once more for find_or_create_page */ 479f4686c26SAbhi Das } 480f4686c26SAbhi Das 481eed0f953SAndreas Gruenbacher static struct bio *gfs2_chain_bio(struct bio *prev, unsigned int nr_iovecs) 482eed0f953SAndreas Gruenbacher { 483eed0f953SAndreas Gruenbacher struct bio *new; 484eed0f953SAndreas Gruenbacher 485eed0f953SAndreas Gruenbacher new = bio_alloc(GFP_NOIO, nr_iovecs); 486eed0f953SAndreas Gruenbacher bio_copy_dev(new, prev); 487eed0f953SAndreas Gruenbacher new->bi_iter.bi_sector = bio_end_sector(prev); 488eed0f953SAndreas Gruenbacher new->bi_opf = prev->bi_opf; 489eed0f953SAndreas Gruenbacher new->bi_write_hint = prev->bi_write_hint; 490eed0f953SAndreas Gruenbacher bio_chain(new, prev); 491eed0f953SAndreas Gruenbacher submit_bio(prev); 492eed0f953SAndreas Gruenbacher return new; 493eed0f953SAndreas Gruenbacher } 494eed0f953SAndreas Gruenbacher 495f4686c26SAbhi Das /** 496f4686c26SAbhi Das * gfs2_find_jhead - find the head of a log 497f4686c26SAbhi Das * @jd: The journal descriptor 498f4686c26SAbhi Das * @head: The log descriptor for the head of the log is returned here 499f4686c26SAbhi Das * 500f4686c26SAbhi Das * Do a search of a journal by reading it in large chunks using bios and find 501f4686c26SAbhi Das * the valid log entry with the highest sequence number. (i.e. the log head) 502f4686c26SAbhi Das * 503f4686c26SAbhi Das * Returns: 0 on success, errno otherwise 504f4686c26SAbhi Das */ 505f4686c26SAbhi Das int gfs2_find_jhead(struct gfs2_jdesc *jd, struct gfs2_log_header_host *head, 506f4686c26SAbhi Das bool keep_cache) 507f4686c26SAbhi Das { 508f4686c26SAbhi Das struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 509f4686c26SAbhi Das struct address_space *mapping = jd->jd_inode->i_mapping; 510f4686c26SAbhi Das unsigned int block = 0, blocks_submitted = 0, blocks_read = 0; 511eed0f953SAndreas Gruenbacher unsigned int bsize = sdp->sd_sb.sb_bsize, off; 512f4686c26SAbhi Das unsigned int bsize_shift = sdp->sd_sb.sb_bsize_shift; 513f4686c26SAbhi Das unsigned int shift = PAGE_SHIFT - bsize_shift; 51420be493bSAndreas Gruenbacher unsigned int max_blocks = 2 * 1024 * 1024 >> bsize_shift; 515f4686c26SAbhi Das struct gfs2_journal_extent *je; 516f4686c26SAbhi Das int sz, ret = 0; 517f4686c26SAbhi Das struct bio *bio = NULL; 518f4686c26SAbhi Das struct page *page = NULL; 51920be493bSAndreas Gruenbacher bool done = false; 520f4686c26SAbhi Das errseq_t since; 521f4686c26SAbhi Das 522f4686c26SAbhi Das memset(head, 0, sizeof(*head)); 523f4686c26SAbhi Das if (list_empty(&jd->extent_list)) 524f4686c26SAbhi Das gfs2_map_journal_extents(sdp, jd); 525f4686c26SAbhi Das 526f4686c26SAbhi Das since = filemap_sample_wb_err(mapping); 527f4686c26SAbhi Das list_for_each_entry(je, &jd->extent_list, list) { 528eed0f953SAndreas Gruenbacher u64 dblock = je->dblock; 529f4686c26SAbhi Das 530eed0f953SAndreas Gruenbacher for (; block < je->lblock + je->blocks; block++, dblock++) { 531f4686c26SAbhi Das if (!page) { 532f4686c26SAbhi Das page = find_or_create_page(mapping, 533f4686c26SAbhi Das block >> shift, GFP_NOFS); 534f4686c26SAbhi Das if (!page) { 535f4686c26SAbhi Das ret = -ENOMEM; 536f4686c26SAbhi Das done = true; 537f4686c26SAbhi Das goto out; 538f4686c26SAbhi Das } 539eed0f953SAndreas Gruenbacher off = 0; 540eed0f953SAndreas Gruenbacher } 541eed0f953SAndreas Gruenbacher 54220be493bSAndreas Gruenbacher if (bio && (off || block < blocks_submitted + max_blocks)) { 543aa83da7fSAndreas Gruenbacher sector_t sector = dblock << sdp->sd_fsb2bb_shift; 544aa83da7fSAndreas Gruenbacher 545aa83da7fSAndreas Gruenbacher if (bio_end_sector(bio) == sector) { 546eed0f953SAndreas Gruenbacher sz = bio_add_page(bio, page, bsize, off); 547eed0f953SAndreas Gruenbacher if (sz == bsize) 548eed0f953SAndreas Gruenbacher goto block_added; 549aa83da7fSAndreas Gruenbacher } 550eed0f953SAndreas Gruenbacher if (off) { 551eed0f953SAndreas Gruenbacher unsigned int blocks = 552eed0f953SAndreas Gruenbacher (PAGE_SIZE - off) >> bsize_shift; 553eed0f953SAndreas Gruenbacher 554eed0f953SAndreas Gruenbacher bio = gfs2_chain_bio(bio, blocks); 555eed0f953SAndreas Gruenbacher goto add_block_to_new_bio; 556eed0f953SAndreas Gruenbacher } 557f4686c26SAbhi Das } 558f4686c26SAbhi Das 559f4686c26SAbhi Das if (bio) { 56020be493bSAndreas Gruenbacher blocks_submitted = block; 561f4686c26SAbhi Das submit_bio(bio); 562f4686c26SAbhi Das } 563f4686c26SAbhi Das 564f4686c26SAbhi Das bio = gfs2_log_alloc_bio(sdp, dblock, gfs2_end_log_read); 565f4686c26SAbhi Das bio->bi_opf = REQ_OP_READ; 566eed0f953SAndreas Gruenbacher add_block_to_new_bio: 567eed0f953SAndreas Gruenbacher sz = bio_add_page(bio, page, bsize, off); 568eed0f953SAndreas Gruenbacher BUG_ON(sz != bsize); 569eed0f953SAndreas Gruenbacher block_added: 570eed0f953SAndreas Gruenbacher off += bsize; 571eed0f953SAndreas Gruenbacher if (off == PAGE_SIZE) 572f4686c26SAbhi Das page = NULL; 57320be493bSAndreas Gruenbacher if (blocks_submitted <= blocks_read + max_blocks) { 574f4686c26SAbhi Das /* Keep at least one bio in flight */ 575f4686c26SAbhi Das continue; 576f4686c26SAbhi Das } 577f4686c26SAbhi Das 578f4686c26SAbhi Das gfs2_jhead_process_page(jd, blocks_read >> shift, head, &done); 579f4686c26SAbhi Das blocks_read += PAGE_SIZE >> bsize_shift; 580f4686c26SAbhi Das if (done) 581f4686c26SAbhi Das goto out; /* found */ 582f4686c26SAbhi Das } 583f4686c26SAbhi Das } 584f4686c26SAbhi Das 585f4686c26SAbhi Das out: 586f4686c26SAbhi Das if (bio) 587f4686c26SAbhi Das submit_bio(bio); 588f4686c26SAbhi Das while (blocks_read < block) { 589f4686c26SAbhi Das gfs2_jhead_process_page(jd, blocks_read >> shift, head, &done); 590f4686c26SAbhi Das blocks_read += PAGE_SIZE >> bsize_shift; 591f4686c26SAbhi Das } 592f4686c26SAbhi Das 593f4686c26SAbhi Das if (!ret) 594f4686c26SAbhi Das ret = filemap_check_wb_err(mapping, since); 595f4686c26SAbhi Das 596f4686c26SAbhi Das if (!keep_cache) 597f4686c26SAbhi Das truncate_inode_pages(mapping, 0); 598f4686c26SAbhi Das 599f4686c26SAbhi Das return ret; 600f4686c26SAbhi Das } 601f4686c26SAbhi Das 602dad30e90SSteven Whitehouse static struct page *gfs2_get_log_desc(struct gfs2_sbd *sdp, u32 ld_type, 603dad30e90SSteven Whitehouse u32 ld_length, u32 ld_data1) 604e8c92ed7SSteven Whitehouse { 605144a4c2fSSteven Whitehouse struct page *page = mempool_alloc(gfs2_page_pool, GFP_NOIO); 606e8c92ed7SSteven Whitehouse struct gfs2_log_descriptor *ld = page_address(page); 607e8c92ed7SSteven Whitehouse clear_page(ld); 60816615be1SSteven Whitehouse ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC); 60916615be1SSteven Whitehouse ld->ld_header.mh_type = cpu_to_be32(GFS2_METATYPE_LD); 61016615be1SSteven Whitehouse ld->ld_header.mh_format = cpu_to_be32(GFS2_FORMAT_LD); 61116615be1SSteven Whitehouse ld->ld_type = cpu_to_be32(ld_type); 612dad30e90SSteven Whitehouse ld->ld_length = cpu_to_be32(ld_length); 613dad30e90SSteven Whitehouse ld->ld_data1 = cpu_to_be32(ld_data1); 61416615be1SSteven Whitehouse ld->ld_data2 = 0; 615e8c92ed7SSteven Whitehouse return page; 61616615be1SSteven Whitehouse } 61716615be1SSteven Whitehouse 618dad30e90SSteven Whitehouse static void gfs2_check_magic(struct buffer_head *bh) 619dad30e90SSteven Whitehouse { 620dad30e90SSteven Whitehouse void *kaddr; 621dad30e90SSteven Whitehouse __be32 *ptr; 622dad30e90SSteven Whitehouse 623dad30e90SSteven Whitehouse clear_buffer_escaped(bh); 624dad30e90SSteven Whitehouse kaddr = kmap_atomic(bh->b_page); 625dad30e90SSteven Whitehouse ptr = kaddr + bh_offset(bh); 626dad30e90SSteven Whitehouse if (*ptr == cpu_to_be32(GFS2_MAGIC)) 627dad30e90SSteven Whitehouse set_buffer_escaped(bh); 628dad30e90SSteven Whitehouse kunmap_atomic(kaddr); 629dad30e90SSteven Whitehouse } 630dad30e90SSteven Whitehouse 6317f63257dSBenjamin Marzinski static int blocknr_cmp(void *priv, struct list_head *a, struct list_head *b) 6327f63257dSBenjamin Marzinski { 6337f63257dSBenjamin Marzinski struct gfs2_bufdata *bda, *bdb; 6347f63257dSBenjamin Marzinski 6357f63257dSBenjamin Marzinski bda = list_entry(a, struct gfs2_bufdata, bd_list); 6367f63257dSBenjamin Marzinski bdb = list_entry(b, struct gfs2_bufdata, bd_list); 6377f63257dSBenjamin Marzinski 6387f63257dSBenjamin Marzinski if (bda->bd_bh->b_blocknr < bdb->bd_bh->b_blocknr) 6397f63257dSBenjamin Marzinski return -1; 6407f63257dSBenjamin Marzinski if (bda->bd_bh->b_blocknr > bdb->bd_bh->b_blocknr) 6417f63257dSBenjamin Marzinski return 1; 6427f63257dSBenjamin Marzinski return 0; 6437f63257dSBenjamin Marzinski } 6447f63257dSBenjamin Marzinski 645dad30e90SSteven Whitehouse static void gfs2_before_commit(struct gfs2_sbd *sdp, unsigned int limit, 646dad30e90SSteven Whitehouse unsigned int total, struct list_head *blist, 647dad30e90SSteven Whitehouse bool is_databuf) 648b3b94faaSDavid Teigland { 649b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld; 650b3b94faaSDavid Teigland struct gfs2_bufdata *bd1 = NULL, *bd2; 651e8c92ed7SSteven Whitehouse struct page *page; 652b3b94faaSDavid Teigland unsigned int num; 653b3b94faaSDavid Teigland unsigned n; 654b3b94faaSDavid Teigland __be64 *ptr; 655b3b94faaSDavid Teigland 656905d2aefSBob Peterson gfs2_log_lock(sdp); 6577f63257dSBenjamin Marzinski list_sort(NULL, blist, blocknr_cmp); 658c0752aa7SBob Peterson bd1 = bd2 = list_prepare_entry(bd1, blist, bd_list); 659b3b94faaSDavid Teigland while(total) { 660b3b94faaSDavid Teigland num = total; 661b3b94faaSDavid Teigland if (total > limit) 662b3b94faaSDavid Teigland num = limit; 663905d2aefSBob Peterson gfs2_log_unlock(sdp); 6644a586812SBob Peterson page = gfs2_get_log_desc(sdp, 6654a586812SBob Peterson is_databuf ? GFS2_LOG_DESC_JDATA : 6664a586812SBob Peterson GFS2_LOG_DESC_METADATA, num + 1, num); 667e8c92ed7SSteven Whitehouse ld = page_address(page); 668905d2aefSBob Peterson gfs2_log_lock(sdp); 669e8c92ed7SSteven Whitehouse ptr = (__be64 *)(ld + 1); 670b3b94faaSDavid Teigland 671b3b94faaSDavid Teigland n = 0; 672c0752aa7SBob Peterson list_for_each_entry_continue(bd1, blist, bd_list) { 673b3b94faaSDavid Teigland *ptr++ = cpu_to_be64(bd1->bd_bh->b_blocknr); 674dad30e90SSteven Whitehouse if (is_databuf) { 675dad30e90SSteven Whitehouse gfs2_check_magic(bd1->bd_bh); 676dad30e90SSteven Whitehouse *ptr++ = cpu_to_be64(buffer_escaped(bd1->bd_bh) ? 1 : 0); 677dad30e90SSteven Whitehouse } 678b3b94faaSDavid Teigland if (++n >= num) 679b3b94faaSDavid Teigland break; 680b3b94faaSDavid Teigland } 681b3b94faaSDavid Teigland 682905d2aefSBob Peterson gfs2_log_unlock(sdp); 683e8c92ed7SSteven Whitehouse gfs2_log_write_page(sdp, page); 684905d2aefSBob Peterson gfs2_log_lock(sdp); 685b3b94faaSDavid Teigland 686b3b94faaSDavid Teigland n = 0; 687c0752aa7SBob Peterson list_for_each_entry_continue(bd2, blist, bd_list) { 68816615be1SSteven Whitehouse get_bh(bd2->bd_bh); 689905d2aefSBob Peterson gfs2_log_unlock(sdp); 69016615be1SSteven Whitehouse lock_buffer(bd2->bd_bh); 691dad30e90SSteven Whitehouse 692dad30e90SSteven Whitehouse if (buffer_escaped(bd2->bd_bh)) { 693dad30e90SSteven Whitehouse void *kaddr; 694dad30e90SSteven Whitehouse page = mempool_alloc(gfs2_page_pool, GFP_NOIO); 695dad30e90SSteven Whitehouse ptr = page_address(page); 696dad30e90SSteven Whitehouse kaddr = kmap_atomic(bd2->bd_bh->b_page); 697dad30e90SSteven Whitehouse memcpy(ptr, kaddr + bh_offset(bd2->bd_bh), 698dad30e90SSteven Whitehouse bd2->bd_bh->b_size); 699dad30e90SSteven Whitehouse kunmap_atomic(kaddr); 700dad30e90SSteven Whitehouse *(__be32 *)ptr = 0; 701dad30e90SSteven Whitehouse clear_buffer_escaped(bd2->bd_bh); 702dad30e90SSteven Whitehouse unlock_buffer(bd2->bd_bh); 703dad30e90SSteven Whitehouse brelse(bd2->bd_bh); 704dad30e90SSteven Whitehouse gfs2_log_write_page(sdp, page); 705dad30e90SSteven Whitehouse } else { 706e8c92ed7SSteven Whitehouse gfs2_log_write_bh(sdp, bd2->bd_bh); 707dad30e90SSteven Whitehouse } 708905d2aefSBob Peterson gfs2_log_lock(sdp); 709b3b94faaSDavid Teigland if (++n >= num) 710b3b94faaSDavid Teigland break; 711b3b94faaSDavid Teigland } 712b3b94faaSDavid Teigland 713905d2aefSBob Peterson BUG_ON(total < num); 714b3b94faaSDavid Teigland total -= num; 715b3b94faaSDavid Teigland } 716905d2aefSBob Peterson gfs2_log_unlock(sdp); 717b3b94faaSDavid Teigland } 718b3b94faaSDavid Teigland 719d69a3c65SSteven Whitehouse static void buf_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 720dad30e90SSteven Whitehouse { 721dad30e90SSteven Whitehouse unsigned int limit = buf_limit(sdp); /* 503 for 4k blocks */ 722022ef4feSSteven Whitehouse unsigned int nbuf; 723d69a3c65SSteven Whitehouse if (tr == NULL) 724d69a3c65SSteven Whitehouse return; 725022ef4feSSteven Whitehouse nbuf = tr->tr_num_buf_new - tr->tr_num_buf_rm; 726022ef4feSSteven Whitehouse gfs2_before_commit(sdp, limit, nbuf, &tr->tr_buf, 0); 727dad30e90SSteven Whitehouse } 728dad30e90SSteven Whitehouse 72916ca9412SBenjamin Marzinski static void buf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 730b3b94faaSDavid Teigland { 731d69a3c65SSteven Whitehouse struct list_head *head; 732b3b94faaSDavid Teigland struct gfs2_bufdata *bd; 733b3b94faaSDavid Teigland 734d69a3c65SSteven Whitehouse if (tr == NULL) 73516ca9412SBenjamin Marzinski return; 73616ca9412SBenjamin Marzinski 737d69a3c65SSteven Whitehouse head = &tr->tr_buf; 738b3b94faaSDavid Teigland while (!list_empty(head)) { 739969183bcSAndreas Gruenbacher bd = list_first_entry(head, struct gfs2_bufdata, bd_list); 740c0752aa7SBob Peterson list_del_init(&bd->bd_list); 74116ca9412SBenjamin Marzinski gfs2_unpin(sdp, bd->bd_bh, tr); 742b3b94faaSDavid Teigland } 743b3b94faaSDavid Teigland } 744b3b94faaSDavid Teigland 745b3b94faaSDavid Teigland static void buf_lo_before_scan(struct gfs2_jdesc *jd, 74655167622SAl Viro struct gfs2_log_header_host *head, int pass) 747b3b94faaSDavid Teigland { 748b3b94faaSDavid Teigland if (pass != 0) 749b3b94faaSDavid Teigland return; 750b3b94faaSDavid Teigland 751a17d758bSBob Peterson jd->jd_found_blocks = 0; 752a17d758bSBob Peterson jd->jd_replayed_blocks = 0; 753b3b94faaSDavid Teigland } 754b3b94faaSDavid Teigland 7557c70b896SBob Peterson static int buf_lo_scan_elements(struct gfs2_jdesc *jd, u32 start, 756b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld, __be64 *ptr, 757b3b94faaSDavid Teigland int pass) 758b3b94faaSDavid Teigland { 759feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 760feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 7615c676f6dSSteven Whitehouse struct gfs2_glock *gl = ip->i_gl; 762b3b94faaSDavid Teigland unsigned int blks = be32_to_cpu(ld->ld_data1); 763b3b94faaSDavid Teigland struct buffer_head *bh_log, *bh_ip; 764cd915493SSteven Whitehouse u64 blkno; 765b3b94faaSDavid Teigland int error = 0; 766b3b94faaSDavid Teigland 767b3b94faaSDavid Teigland if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_METADATA) 768b3b94faaSDavid Teigland return 0; 769b3b94faaSDavid Teigland 770e1cb6be9SBob Peterson gfs2_replay_incr_blk(jd, &start); 771b3b94faaSDavid Teigland 772e1cb6be9SBob Peterson for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { 773b3b94faaSDavid Teigland blkno = be64_to_cpu(*ptr++); 774b3b94faaSDavid Teigland 775a17d758bSBob Peterson jd->jd_found_blocks++; 776b3b94faaSDavid Teigland 777a17d758bSBob Peterson if (gfs2_revoke_check(jd, blkno, start)) 778b3b94faaSDavid Teigland continue; 779b3b94faaSDavid Teigland 780b3b94faaSDavid Teigland error = gfs2_replay_read_block(jd, start, &bh_log); 781b3b94faaSDavid Teigland if (error) 782b3b94faaSDavid Teigland return error; 783b3b94faaSDavid Teigland 784b3b94faaSDavid Teigland bh_ip = gfs2_meta_new(gl, blkno); 785b3b94faaSDavid Teigland memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); 786b3b94faaSDavid Teigland 787b3b94faaSDavid Teigland if (gfs2_meta_check(sdp, bh_ip)) 788b3b94faaSDavid Teigland error = -EIO; 789d14e1ca3SBob Peterson else { 790d14e1ca3SBob Peterson struct gfs2_meta_header *mh = 791d14e1ca3SBob Peterson (struct gfs2_meta_header *)bh_ip->b_data; 792b3b94faaSDavid Teigland 793d14e1ca3SBob Peterson if (mh->mh_type == cpu_to_be32(GFS2_METATYPE_RG)) { 794d14e1ca3SBob Peterson struct gfs2_rgrpd *rgd; 795d14e1ca3SBob Peterson 796d14e1ca3SBob Peterson rgd = gfs2_blk2rgrpd(sdp, blkno, false); 797d14e1ca3SBob Peterson if (rgd && rgd->rd_addr == blkno && 798d14e1ca3SBob Peterson rgd->rd_bits && rgd->rd_bits->bi_bh) { 799d14e1ca3SBob Peterson fs_info(sdp, "Replaying 0x%llx but we " 800d14e1ca3SBob Peterson "already have a bh!\n", 801d14e1ca3SBob Peterson (unsigned long long)blkno); 802d14e1ca3SBob Peterson fs_info(sdp, "busy:%d, pinned:%d\n", 803d14e1ca3SBob Peterson buffer_busy(rgd->rd_bits->bi_bh) ? 1 : 0, 804d14e1ca3SBob Peterson buffer_pinned(rgd->rd_bits->bi_bh)); 8053792ce97SBob Peterson gfs2_dump_glock(NULL, rgd->rd_gl, true); 806d14e1ca3SBob Peterson } 807d14e1ca3SBob Peterson } 808d14e1ca3SBob Peterson mark_buffer_dirty(bh_ip); 809d14e1ca3SBob Peterson } 810b3b94faaSDavid Teigland brelse(bh_log); 811b3b94faaSDavid Teigland brelse(bh_ip); 812b3b94faaSDavid Teigland 813b3b94faaSDavid Teigland if (error) 814b3b94faaSDavid Teigland break; 815b3b94faaSDavid Teigland 816a17d758bSBob Peterson jd->jd_replayed_blocks++; 817b3b94faaSDavid Teigland } 818b3b94faaSDavid Teigland 819b3b94faaSDavid Teigland return error; 820b3b94faaSDavid Teigland } 821b3b94faaSDavid Teigland 822b3b94faaSDavid Teigland static void buf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 823b3b94faaSDavid Teigland { 824feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 825feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 826b3b94faaSDavid Teigland 827b3b94faaSDavid Teigland if (error) { 8284a55752aSBob Peterson gfs2_inode_metasync(ip->i_gl); 829b3b94faaSDavid Teigland return; 830b3b94faaSDavid Teigland } 831b3b94faaSDavid Teigland if (pass != 1) 832b3b94faaSDavid Teigland return; 833b3b94faaSDavid Teigland 8344a55752aSBob Peterson gfs2_inode_metasync(ip->i_gl); 835b3b94faaSDavid Teigland 836b3b94faaSDavid Teigland fs_info(sdp, "jid=%u: Replayed %u of %u blocks\n", 837a17d758bSBob Peterson jd->jd_jid, jd->jd_replayed_blocks, jd->jd_found_blocks); 838b3b94faaSDavid Teigland } 839b3b94faaSDavid Teigland 840d69a3c65SSteven Whitehouse static void revoke_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 841b3b94faaSDavid Teigland { 842b3b94faaSDavid Teigland struct gfs2_meta_header *mh; 843b3b94faaSDavid Teigland unsigned int offset; 844a5b1d3fcSAndreas Gruenbacher struct list_head *head = &sdp->sd_log_revokes; 84582e86087SSteven Whitehouse struct gfs2_bufdata *bd; 846e8c92ed7SSteven Whitehouse struct page *page; 847dad30e90SSteven Whitehouse unsigned int length; 848b3b94faaSDavid Teigland 8495d054964SBenjamin Marzinski gfs2_write_revokes(sdp); 850b3b94faaSDavid Teigland if (!sdp->sd_log_num_revoke) 851b3b94faaSDavid Teigland return; 852b3b94faaSDavid Teigland 8532e9eeaa1SBob Peterson length = gfs2_struct2blk(sdp, sdp->sd_log_num_revoke); 854dad30e90SSteven Whitehouse page = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_REVOKE, length, sdp->sd_log_num_revoke); 855b3b94faaSDavid Teigland offset = sizeof(struct gfs2_log_descriptor); 856b3b94faaSDavid Teigland 857c0752aa7SBob Peterson list_for_each_entry(bd, head, bd_list) { 858b3b94faaSDavid Teigland sdp->sd_log_num_revoke--; 859b3b94faaSDavid Teigland 860cd915493SSteven Whitehouse if (offset + sizeof(u64) > sdp->sd_sb.sb_bsize) { 861b3b94faaSDavid Teigland 862e8c92ed7SSteven Whitehouse gfs2_log_write_page(sdp, page); 863e8c92ed7SSteven Whitehouse page = mempool_alloc(gfs2_page_pool, GFP_NOIO); 864e8c92ed7SSteven Whitehouse mh = page_address(page); 865e8c92ed7SSteven Whitehouse clear_page(mh); 866b3b94faaSDavid Teigland mh->mh_magic = cpu_to_be32(GFS2_MAGIC); 867e3167dedSSteven Whitehouse mh->mh_type = cpu_to_be32(GFS2_METATYPE_LB); 868e3167dedSSteven Whitehouse mh->mh_format = cpu_to_be32(GFS2_FORMAT_LB); 869b3b94faaSDavid Teigland offset = sizeof(struct gfs2_meta_header); 870b3b94faaSDavid Teigland } 871b3b94faaSDavid Teigland 872e8c92ed7SSteven Whitehouse *(__be64 *)(page_address(page) + offset) = cpu_to_be64(bd->bd_blkno); 873cd915493SSteven Whitehouse offset += sizeof(u64); 874b3b94faaSDavid Teigland } 875b3b94faaSDavid Teigland gfs2_assert_withdraw(sdp, !sdp->sd_log_num_revoke); 876b3b94faaSDavid Teigland 877e8c92ed7SSteven Whitehouse gfs2_log_write_page(sdp, page); 878b3b94faaSDavid Teigland } 879b3b94faaSDavid Teigland 88016ca9412SBenjamin Marzinski static void revoke_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 881f42ab085SSteven Whitehouse { 882a5b1d3fcSAndreas Gruenbacher struct list_head *head = &sdp->sd_log_revokes; 883638803d4SBob Peterson struct gfs2_bufdata *bd; 884638803d4SBob Peterson struct gfs2_glock *gl; 885f42ab085SSteven Whitehouse 886638803d4SBob Peterson while (!list_empty(head)) { 887969183bcSAndreas Gruenbacher bd = list_first_entry(head, struct gfs2_bufdata, bd_list); 888638803d4SBob Peterson list_del_init(&bd->bd_list); 889638803d4SBob Peterson gl = bd->bd_gl; 890fe5e7ba1SBob Peterson gfs2_glock_remove_revoke(gl); 891638803d4SBob Peterson kmem_cache_free(gfs2_bufdata_cachep, bd); 892638803d4SBob Peterson } 893f42ab085SSteven Whitehouse } 894f42ab085SSteven Whitehouse 895b3b94faaSDavid Teigland static void revoke_lo_before_scan(struct gfs2_jdesc *jd, 89655167622SAl Viro struct gfs2_log_header_host *head, int pass) 897b3b94faaSDavid Teigland { 898b3b94faaSDavid Teigland if (pass != 0) 899b3b94faaSDavid Teigland return; 900b3b94faaSDavid Teigland 901a17d758bSBob Peterson jd->jd_found_revokes = 0; 902a17d758bSBob Peterson jd->jd_replay_tail = head->lh_tail; 903b3b94faaSDavid Teigland } 904b3b94faaSDavid Teigland 9057c70b896SBob Peterson static int revoke_lo_scan_elements(struct gfs2_jdesc *jd, u32 start, 906b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld, __be64 *ptr, 907b3b94faaSDavid Teigland int pass) 908b3b94faaSDavid Teigland { 909feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 910b3b94faaSDavid Teigland unsigned int blks = be32_to_cpu(ld->ld_length); 911b3b94faaSDavid Teigland unsigned int revokes = be32_to_cpu(ld->ld_data1); 912b3b94faaSDavid Teigland struct buffer_head *bh; 913b3b94faaSDavid Teigland unsigned int offset; 914cd915493SSteven Whitehouse u64 blkno; 915b3b94faaSDavid Teigland int first = 1; 916b3b94faaSDavid Teigland int error; 917b3b94faaSDavid Teigland 918b3b94faaSDavid Teigland if (pass != 0 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_REVOKE) 919b3b94faaSDavid Teigland return 0; 920b3b94faaSDavid Teigland 921b3b94faaSDavid Teigland offset = sizeof(struct gfs2_log_descriptor); 922b3b94faaSDavid Teigland 923e1cb6be9SBob Peterson for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { 924b3b94faaSDavid Teigland error = gfs2_replay_read_block(jd, start, &bh); 925b3b94faaSDavid Teigland if (error) 926b3b94faaSDavid Teigland return error; 927b3b94faaSDavid Teigland 928b3b94faaSDavid Teigland if (!first) 929b3b94faaSDavid Teigland gfs2_metatype_check(sdp, bh, GFS2_METATYPE_LB); 930b3b94faaSDavid Teigland 931cd915493SSteven Whitehouse while (offset + sizeof(u64) <= sdp->sd_sb.sb_bsize) { 932b3b94faaSDavid Teigland blkno = be64_to_cpu(*(__be64 *)(bh->b_data + offset)); 933b3b94faaSDavid Teigland 934a17d758bSBob Peterson error = gfs2_revoke_add(jd, blkno, start); 9353ad62e87SBob Peterson if (error < 0) { 9363ad62e87SBob Peterson brelse(bh); 937b3b94faaSDavid Teigland return error; 9383ad62e87SBob Peterson } 939b3b94faaSDavid Teigland else if (error) 940a17d758bSBob Peterson jd->jd_found_revokes++; 941b3b94faaSDavid Teigland 942b3b94faaSDavid Teigland if (!--revokes) 943b3b94faaSDavid Teigland break; 944cd915493SSteven Whitehouse offset += sizeof(u64); 945b3b94faaSDavid Teigland } 946b3b94faaSDavid Teigland 947b3b94faaSDavid Teigland brelse(bh); 948b3b94faaSDavid Teigland offset = sizeof(struct gfs2_meta_header); 949b3b94faaSDavid Teigland first = 0; 950b3b94faaSDavid Teigland } 951b3b94faaSDavid Teigland 952b3b94faaSDavid Teigland return 0; 953b3b94faaSDavid Teigland } 954b3b94faaSDavid Teigland 955b3b94faaSDavid Teigland static void revoke_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 956b3b94faaSDavid Teigland { 957feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 958b3b94faaSDavid Teigland 959b3b94faaSDavid Teigland if (error) { 960a17d758bSBob Peterson gfs2_revoke_clean(jd); 961b3b94faaSDavid Teigland return; 962b3b94faaSDavid Teigland } 963b3b94faaSDavid Teigland if (pass != 1) 964b3b94faaSDavid Teigland return; 965b3b94faaSDavid Teigland 966b3b94faaSDavid Teigland fs_info(sdp, "jid=%u: Found %u revoke tags\n", 967a17d758bSBob Peterson jd->jd_jid, jd->jd_found_revokes); 968b3b94faaSDavid Teigland 969a17d758bSBob Peterson gfs2_revoke_clean(jd); 970b3b94faaSDavid Teigland } 971b3b94faaSDavid Teigland 97218ec7d5cSSteven Whitehouse /** 97318ec7d5cSSteven Whitehouse * databuf_lo_before_commit - Scan the data buffers, writing as we go 97418ec7d5cSSteven Whitehouse * 97518ec7d5cSSteven Whitehouse */ 976d7b616e2SSteven Whitehouse 977d69a3c65SSteven Whitehouse static void databuf_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 978b3b94faaSDavid Teigland { 979022ef4feSSteven Whitehouse unsigned int limit = databuf_limit(sdp); 980022ef4feSSteven Whitehouse unsigned int nbuf; 981d69a3c65SSteven Whitehouse if (tr == NULL) 982d69a3c65SSteven Whitehouse return; 983022ef4feSSteven Whitehouse nbuf = tr->tr_num_databuf_new - tr->tr_num_databuf_rm; 984022ef4feSSteven Whitehouse gfs2_before_commit(sdp, limit, nbuf, &tr->tr_databuf, 1); 985b3b94faaSDavid Teigland } 986b3b94faaSDavid Teigland 9877c70b896SBob Peterson static int databuf_lo_scan_elements(struct gfs2_jdesc *jd, u32 start, 98818ec7d5cSSteven Whitehouse struct gfs2_log_descriptor *ld, 98918ec7d5cSSteven Whitehouse __be64 *ptr, int pass) 99018ec7d5cSSteven Whitehouse { 991feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 9925c676f6dSSteven Whitehouse struct gfs2_glock *gl = ip->i_gl; 99318ec7d5cSSteven Whitehouse unsigned int blks = be32_to_cpu(ld->ld_data1); 99418ec7d5cSSteven Whitehouse struct buffer_head *bh_log, *bh_ip; 995cd915493SSteven Whitehouse u64 blkno; 996cd915493SSteven Whitehouse u64 esc; 99718ec7d5cSSteven Whitehouse int error = 0; 99818ec7d5cSSteven Whitehouse 99918ec7d5cSSteven Whitehouse if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_JDATA) 100018ec7d5cSSteven Whitehouse return 0; 100118ec7d5cSSteven Whitehouse 1002e1cb6be9SBob Peterson gfs2_replay_incr_blk(jd, &start); 1003e1cb6be9SBob Peterson for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { 100418ec7d5cSSteven Whitehouse blkno = be64_to_cpu(*ptr++); 100518ec7d5cSSteven Whitehouse esc = be64_to_cpu(*ptr++); 100618ec7d5cSSteven Whitehouse 1007a17d758bSBob Peterson jd->jd_found_blocks++; 100818ec7d5cSSteven Whitehouse 1009a17d758bSBob Peterson if (gfs2_revoke_check(jd, blkno, start)) 101018ec7d5cSSteven Whitehouse continue; 101118ec7d5cSSteven Whitehouse 101218ec7d5cSSteven Whitehouse error = gfs2_replay_read_block(jd, start, &bh_log); 101318ec7d5cSSteven Whitehouse if (error) 101418ec7d5cSSteven Whitehouse return error; 101518ec7d5cSSteven Whitehouse 101618ec7d5cSSteven Whitehouse bh_ip = gfs2_meta_new(gl, blkno); 101718ec7d5cSSteven Whitehouse memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); 101818ec7d5cSSteven Whitehouse 101918ec7d5cSSteven Whitehouse /* Unescape */ 102018ec7d5cSSteven Whitehouse if (esc) { 102118ec7d5cSSteven Whitehouse __be32 *eptr = (__be32 *)bh_ip->b_data; 102218ec7d5cSSteven Whitehouse *eptr = cpu_to_be32(GFS2_MAGIC); 102318ec7d5cSSteven Whitehouse } 102418ec7d5cSSteven Whitehouse mark_buffer_dirty(bh_ip); 102518ec7d5cSSteven Whitehouse 102618ec7d5cSSteven Whitehouse brelse(bh_log); 102718ec7d5cSSteven Whitehouse brelse(bh_ip); 102818ec7d5cSSteven Whitehouse 1029a17d758bSBob Peterson jd->jd_replayed_blocks++; 103018ec7d5cSSteven Whitehouse } 103118ec7d5cSSteven Whitehouse 103218ec7d5cSSteven Whitehouse return error; 103318ec7d5cSSteven Whitehouse } 103418ec7d5cSSteven Whitehouse 103518ec7d5cSSteven Whitehouse /* FIXME: sort out accounting for log blocks etc. */ 103618ec7d5cSSteven Whitehouse 103718ec7d5cSSteven Whitehouse static void databuf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 103818ec7d5cSSteven Whitehouse { 1039feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 1040feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 104118ec7d5cSSteven Whitehouse 104218ec7d5cSSteven Whitehouse if (error) { 10434a55752aSBob Peterson gfs2_inode_metasync(ip->i_gl); 104418ec7d5cSSteven Whitehouse return; 104518ec7d5cSSteven Whitehouse } 104618ec7d5cSSteven Whitehouse if (pass != 1) 104718ec7d5cSSteven Whitehouse return; 104818ec7d5cSSteven Whitehouse 104918ec7d5cSSteven Whitehouse /* data sync? */ 10504a55752aSBob Peterson gfs2_inode_metasync(ip->i_gl); 105118ec7d5cSSteven Whitehouse 105218ec7d5cSSteven Whitehouse fs_info(sdp, "jid=%u: Replayed %u of %u data blocks\n", 1053a17d758bSBob Peterson jd->jd_jid, jd->jd_replayed_blocks, jd->jd_found_blocks); 105418ec7d5cSSteven Whitehouse } 105518ec7d5cSSteven Whitehouse 105616ca9412SBenjamin Marzinski static void databuf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 105718ec7d5cSSteven Whitehouse { 1058d69a3c65SSteven Whitehouse struct list_head *head; 105918ec7d5cSSteven Whitehouse struct gfs2_bufdata *bd; 106018ec7d5cSSteven Whitehouse 1061d69a3c65SSteven Whitehouse if (tr == NULL) 106216ca9412SBenjamin Marzinski return; 106316ca9412SBenjamin Marzinski 1064d69a3c65SSteven Whitehouse head = &tr->tr_databuf; 106518ec7d5cSSteven Whitehouse while (!list_empty(head)) { 1066969183bcSAndreas Gruenbacher bd = list_first_entry(head, struct gfs2_bufdata, bd_list); 1067c0752aa7SBob Peterson list_del_init(&bd->bd_list); 106816ca9412SBenjamin Marzinski gfs2_unpin(sdp, bd->bd_bh, tr); 106918ec7d5cSSteven Whitehouse } 107018ec7d5cSSteven Whitehouse } 107118ec7d5cSSteven Whitehouse 107218ec7d5cSSteven Whitehouse 107332ac43f6SAndreas Gruenbacher static const struct gfs2_log_operations gfs2_buf_lops = { 1074b3b94faaSDavid Teigland .lo_before_commit = buf_lo_before_commit, 1075b3b94faaSDavid Teigland .lo_after_commit = buf_lo_after_commit, 1076b3b94faaSDavid Teigland .lo_before_scan = buf_lo_before_scan, 1077b3b94faaSDavid Teigland .lo_scan_elements = buf_lo_scan_elements, 1078b3b94faaSDavid Teigland .lo_after_scan = buf_lo_after_scan, 1079ea67eedbSSteven Whitehouse .lo_name = "buf", 1080b3b94faaSDavid Teigland }; 1081b3b94faaSDavid Teigland 108232ac43f6SAndreas Gruenbacher static const struct gfs2_log_operations gfs2_revoke_lops = { 1083b3b94faaSDavid Teigland .lo_before_commit = revoke_lo_before_commit, 1084f42ab085SSteven Whitehouse .lo_after_commit = revoke_lo_after_commit, 1085b3b94faaSDavid Teigland .lo_before_scan = revoke_lo_before_scan, 1086b3b94faaSDavid Teigland .lo_scan_elements = revoke_lo_scan_elements, 1087b3b94faaSDavid Teigland .lo_after_scan = revoke_lo_after_scan, 1088ea67eedbSSteven Whitehouse .lo_name = "revoke", 1089b3b94faaSDavid Teigland }; 1090b3b94faaSDavid Teigland 109132ac43f6SAndreas Gruenbacher static const struct gfs2_log_operations gfs2_databuf_lops = { 1092b3b94faaSDavid Teigland .lo_before_commit = databuf_lo_before_commit, 109318ec7d5cSSteven Whitehouse .lo_after_commit = databuf_lo_after_commit, 109418ec7d5cSSteven Whitehouse .lo_scan_elements = databuf_lo_scan_elements, 109518ec7d5cSSteven Whitehouse .lo_after_scan = databuf_lo_after_scan, 1096ea67eedbSSteven Whitehouse .lo_name = "databuf", 1097b3b94faaSDavid Teigland }; 1098b3b94faaSDavid Teigland 1099b09e593dSSteven Whitehouse const struct gfs2_log_operations *gfs2_log_ops[] = { 1100b3b94faaSDavid Teigland &gfs2_databuf_lops, 110116615be1SSteven Whitehouse &gfs2_buf_lops, 110216615be1SSteven Whitehouse &gfs2_revoke_lops, 1103ea67eedbSSteven Whitehouse NULL, 1104b3b94faaSDavid Teigland }; 1105b3b94faaSDavid Teigland 1106