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; 875ea5050cSBob Peterson rgd->rd_extfail_pt = rgd->rd_free; 887c9ca621SBob Peterson } 897c9ca621SBob Peterson 909b9107a5SSteven Whitehouse /** 919b9107a5SSteven Whitehouse * gfs2_unpin - Unpin a buffer 929b9107a5SSteven Whitehouse * @sdp: the filesystem the buffer belongs to 939b9107a5SSteven Whitehouse * @bh: The buffer to unpin 949b9107a5SSteven Whitehouse * @ai: 9529687a2aSSteven Whitehouse * @flags: The inode dirty flags 969b9107a5SSteven Whitehouse * 979b9107a5SSteven Whitehouse */ 989b9107a5SSteven Whitehouse 999b9107a5SSteven Whitehouse static void gfs2_unpin(struct gfs2_sbd *sdp, struct buffer_head *bh, 10016ca9412SBenjamin Marzinski struct gfs2_trans *tr) 1019b9107a5SSteven Whitehouse { 1029b9107a5SSteven Whitehouse struct gfs2_bufdata *bd = bh->b_private; 1039b9107a5SSteven Whitehouse 10429687a2aSSteven Whitehouse BUG_ON(!buffer_uptodate(bh)); 10529687a2aSSteven Whitehouse BUG_ON(!buffer_pinned(bh)); 1069b9107a5SSteven Whitehouse 1079b9107a5SSteven Whitehouse lock_buffer(bh); 1089b9107a5SSteven Whitehouse mark_buffer_dirty(bh); 1099b9107a5SSteven Whitehouse clear_buffer_pinned(bh); 1109b9107a5SSteven Whitehouse 1117c9ca621SBob Peterson if (buffer_is_rgrp(bd)) 1127c9ca621SBob Peterson maybe_release_space(bd); 1137c9ca621SBob Peterson 114d6a079e8SDave Chinner spin_lock(&sdp->sd_ail_lock); 11516ca9412SBenjamin Marzinski if (bd->bd_tr) { 1169b9107a5SSteven Whitehouse list_del(&bd->bd_ail_st_list); 1179b9107a5SSteven Whitehouse brelse(bh); 1189b9107a5SSteven Whitehouse } else { 1199b9107a5SSteven Whitehouse struct gfs2_glock *gl = bd->bd_gl; 1209b9107a5SSteven Whitehouse list_add(&bd->bd_ail_gl_list, &gl->gl_ail_list); 1219b9107a5SSteven Whitehouse atomic_inc(&gl->gl_ail_count); 1229b9107a5SSteven Whitehouse } 12316ca9412SBenjamin Marzinski bd->bd_tr = tr; 12416ca9412SBenjamin Marzinski list_add(&bd->bd_ail_st_list, &tr->tr_ail1_list); 125d6a079e8SDave Chinner spin_unlock(&sdp->sd_ail_lock); 126d6a079e8SDave Chinner 12729687a2aSSteven Whitehouse clear_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags); 12863997775SSteven Whitehouse trace_gfs2_pin(bd, 0); 1299b9107a5SSteven Whitehouse unlock_buffer(bh); 1305e687eacSBenjamin Marzinski atomic_dec(&sdp->sd_log_pinned); 1319b9107a5SSteven Whitehouse } 1329b9107a5SSteven Whitehouse 13319ebc050SAndreas Gruenbacher void gfs2_log_incr_head(struct gfs2_sbd *sdp) 13416615be1SSteven Whitehouse { 135e8c92ed7SSteven Whitehouse BUG_ON((sdp->sd_log_flush_head == sdp->sd_log_tail) && 136e8c92ed7SSteven Whitehouse (sdp->sd_log_flush_head != sdp->sd_log_head)); 137e8c92ed7SSteven Whitehouse 138722f6f62SBob Peterson if (++sdp->sd_log_flush_head == sdp->sd_jdesc->jd_blocks) 139e8c92ed7SSteven Whitehouse sdp->sd_log_flush_head = 0; 14016615be1SSteven Whitehouse } 14116615be1SSteven Whitehouse 14219ebc050SAndreas Gruenbacher u64 gfs2_log_bmap(struct gfs2_jdesc *jd, unsigned int lblock) 14316615be1SSteven Whitehouse { 144e8c92ed7SSteven Whitehouse struct gfs2_journal_extent *je; 14516615be1SSteven Whitehouse 14619ebc050SAndreas Gruenbacher list_for_each_entry(je, &jd->extent_list, list) { 14719ebc050SAndreas Gruenbacher if (lblock >= je->lblock && lblock < je->lblock + je->blocks) 14819ebc050SAndreas Gruenbacher return je->dblock + lblock - je->lblock; 149e8c92ed7SSteven Whitehouse } 15047ac5537SSteven Whitehouse 151e8c92ed7SSteven Whitehouse return -1; 15247ac5537SSteven Whitehouse } 15347ac5537SSteven Whitehouse 15447ac5537SSteven Whitehouse /** 155e8c92ed7SSteven Whitehouse * gfs2_end_log_write_bh - end log write of pagecache data with buffers 156e8c92ed7SSteven Whitehouse * @sdp: The superblock 157e8c92ed7SSteven Whitehouse * @bvec: The bio_vec 158e8c92ed7SSteven Whitehouse * @error: The i/o status 159e8c92ed7SSteven Whitehouse * 1604519eaadSBob Peterson * This finds the relevant buffers and unlocks them and sets the 161e8c92ed7SSteven Whitehouse * error flag according to the status of the i/o request. This is 162e8c92ed7SSteven Whitehouse * used when the log is writing data which has an in-place version 163e8c92ed7SSteven Whitehouse * that is pinned in the pagecache. 164e8c92ed7SSteven Whitehouse */ 165e8c92ed7SSteven Whitehouse 1666dc4f100SMing Lei static void gfs2_end_log_write_bh(struct gfs2_sbd *sdp, 1676dc4f100SMing Lei struct bio_vec *bvec, 1684e4cbee9SChristoph Hellwig blk_status_t error) 169e8c92ed7SSteven Whitehouse { 170e8c92ed7SSteven Whitehouse struct buffer_head *bh, *next; 171e8c92ed7SSteven Whitehouse struct page *page = bvec->bv_page; 172e8c92ed7SSteven Whitehouse unsigned size; 173e8c92ed7SSteven Whitehouse 174e8c92ed7SSteven Whitehouse bh = page_buffers(page); 175e8c92ed7SSteven Whitehouse size = bvec->bv_len; 176e8c92ed7SSteven Whitehouse while (bh_offset(bh) < bvec->bv_offset) 177e8c92ed7SSteven Whitehouse bh = bh->b_this_page; 178e8c92ed7SSteven Whitehouse do { 179e8c92ed7SSteven Whitehouse if (error) 18087354e5dSJeff Layton mark_buffer_write_io_error(bh); 181e8c92ed7SSteven Whitehouse unlock_buffer(bh); 182e8c92ed7SSteven Whitehouse next = bh->b_this_page; 183e8c92ed7SSteven Whitehouse size -= bh->b_size; 184e8c92ed7SSteven Whitehouse brelse(bh); 185e8c92ed7SSteven Whitehouse bh = next; 186e8c92ed7SSteven Whitehouse } while(bh && size); 187e8c92ed7SSteven Whitehouse } 188e8c92ed7SSteven Whitehouse 189e8c92ed7SSteven Whitehouse /** 190e8c92ed7SSteven Whitehouse * gfs2_end_log_write - end of i/o to the log 191e8c92ed7SSteven Whitehouse * @bio: The bio 192e8c92ed7SSteven Whitehouse * 193e8c92ed7SSteven Whitehouse * Each bio_vec contains either data from the pagecache or data 194e8c92ed7SSteven Whitehouse * relating to the log itself. Here we iterate over the bio_vec 195e8c92ed7SSteven Whitehouse * array, processing both kinds of data. 19647ac5537SSteven Whitehouse * 19747ac5537SSteven Whitehouse */ 19847ac5537SSteven Whitehouse 1994246a0b6SChristoph Hellwig static void gfs2_end_log_write(struct bio *bio) 20047ac5537SSteven Whitehouse { 201e8c92ed7SSteven Whitehouse struct gfs2_sbd *sdp = bio->bi_private; 202e8c92ed7SSteven Whitehouse struct bio_vec *bvec; 203e8c92ed7SSteven Whitehouse struct page *page; 2046dc4f100SMing Lei struct bvec_iter_all iter_all; 20547ac5537SSteven Whitehouse 206942b0cddSBob Peterson if (bio->bi_status) { 207f34a6135SBob Peterson if (!cmpxchg(&sdp->sd_log_error, 0, (int)bio->bi_status)) 208942b0cddSBob Peterson fs_err(sdp, "Error %d writing to journal, jid=%u\n", 209942b0cddSBob Peterson bio->bi_status, sdp->sd_jdesc->jd_jid); 210f05b86dbSBob Peterson gfs2_withdraw_delayed(sdp); 211f05b86dbSBob Peterson /* prevent more writes to the journal */ 212f05b86dbSBob Peterson clear_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags); 213942b0cddSBob Peterson wake_up(&sdp->sd_logd_waitq); 214942b0cddSBob Peterson } 215e8c92ed7SSteven Whitehouse 2162b070cfeSChristoph Hellwig bio_for_each_segment_all(bvec, bio, iter_all) { 217e8c92ed7SSteven Whitehouse page = bvec->bv_page; 218e8c92ed7SSteven Whitehouse if (page_has_buffers(page)) 2194e4cbee9SChristoph Hellwig gfs2_end_log_write_bh(sdp, bvec, bio->bi_status); 220e8c92ed7SSteven Whitehouse else 221e8c92ed7SSteven Whitehouse mempool_free(page, gfs2_page_pool); 222e8c92ed7SSteven Whitehouse } 223e8c92ed7SSteven Whitehouse 224e8c92ed7SSteven Whitehouse bio_put(bio); 22547ac5537SSteven Whitehouse if (atomic_dec_and_test(&sdp->sd_log_in_flight)) 22647ac5537SSteven Whitehouse wake_up(&sdp->sd_log_flush_wait); 22747ac5537SSteven Whitehouse } 22847ac5537SSteven Whitehouse 22947ac5537SSteven Whitehouse /** 2305b846095SAbhi Das * gfs2_log_submit_bio - Submit any pending log bio 2315b846095SAbhi Das * @biop: Address of the bio pointer 232f4686c26SAbhi Das * @opf: REQ_OP | op_flags 233e8c92ed7SSteven Whitehouse * 234e8c92ed7SSteven Whitehouse * Submit any pending part-built or full bio to the block device. If 235e8c92ed7SSteven Whitehouse * there is no pending bio, then this is a no-op. 236e8c92ed7SSteven Whitehouse */ 237e8c92ed7SSteven Whitehouse 238f4686c26SAbhi Das void gfs2_log_submit_bio(struct bio **biop, int opf) 239e8c92ed7SSteven Whitehouse { 2405b846095SAbhi Das struct bio *bio = *biop; 2415b846095SAbhi Das if (bio) { 2425b846095SAbhi Das struct gfs2_sbd *sdp = bio->bi_private; 243e8c92ed7SSteven Whitehouse atomic_inc(&sdp->sd_log_in_flight); 244f4686c26SAbhi Das bio->bi_opf = opf; 2455b846095SAbhi Das submit_bio(bio); 2465b846095SAbhi Das *biop = NULL; 247e8c92ed7SSteven Whitehouse } 248e8c92ed7SSteven Whitehouse } 249e8c92ed7SSteven Whitehouse 250e8c92ed7SSteven Whitehouse /** 2515b846095SAbhi Das * gfs2_log_alloc_bio - Allocate a bio 252e8c92ed7SSteven Whitehouse * @sdp: The super block 2535b846095SAbhi Das * @blkno: The device block number we want to write to 2545b846095SAbhi Das * @end_io: The bi_end_io callback 255e8c92ed7SSteven Whitehouse * 2565b846095SAbhi Das * Allocate a new bio, initialize it with the given parameters and return it. 257e8c92ed7SSteven Whitehouse * 2585b846095SAbhi Das * Returns: The newly allocated bio 259e8c92ed7SSteven Whitehouse */ 260e8c92ed7SSteven Whitehouse 2615b846095SAbhi Das static struct bio *gfs2_log_alloc_bio(struct gfs2_sbd *sdp, u64 blkno, 2625b846095SAbhi Das bio_end_io_t *end_io) 263e8c92ed7SSteven Whitehouse { 264e8c92ed7SSteven Whitehouse struct super_block *sb = sdp->sd_vfs; 2655b846095SAbhi Das struct bio *bio = bio_alloc(GFP_NOIO, BIO_MAX_PAGES); 266e8c92ed7SSteven Whitehouse 267aa83da7fSAndreas Gruenbacher bio->bi_iter.bi_sector = blkno << sdp->sd_fsb2bb_shift; 26874d46992SChristoph Hellwig bio_set_dev(bio, sb->s_bdev); 2695b846095SAbhi Das bio->bi_end_io = end_io; 270e8c92ed7SSteven Whitehouse bio->bi_private = sdp; 271e8c92ed7SSteven Whitehouse 272e8c92ed7SSteven Whitehouse return bio; 273e8c92ed7SSteven Whitehouse } 274e8c92ed7SSteven Whitehouse 275e8c92ed7SSteven Whitehouse /** 276e8c92ed7SSteven Whitehouse * gfs2_log_get_bio - Get cached log bio, or allocate a new one 277e8c92ed7SSteven Whitehouse * @sdp: The super block 278e8c92ed7SSteven Whitehouse * @blkno: The device block number we want to write to 2795b846095SAbhi Das * @bio: The bio to get or allocate 2805b846095SAbhi Das * @op: REQ_OP 2815b846095SAbhi Das * @end_io: The bi_end_io callback 2825b846095SAbhi Das * @flush: Always flush the current bio and allocate a new one? 283e8c92ed7SSteven Whitehouse * 284e8c92ed7SSteven Whitehouse * If there is a cached bio, then if the next block number is sequential 285e8c92ed7SSteven Whitehouse * with the previous one, return it, otherwise flush the bio to the 2865b846095SAbhi Das * device. If there is no cached bio, or we just flushed it, then 287e8c92ed7SSteven Whitehouse * allocate a new one. 288e8c92ed7SSteven Whitehouse * 289e8c92ed7SSteven Whitehouse * Returns: The bio to use for log writes 290e8c92ed7SSteven Whitehouse */ 291e8c92ed7SSteven Whitehouse 2925b846095SAbhi Das static struct bio *gfs2_log_get_bio(struct gfs2_sbd *sdp, u64 blkno, 2935b846095SAbhi Das struct bio **biop, int op, 2945b846095SAbhi Das bio_end_io_t *end_io, bool flush) 295e8c92ed7SSteven Whitehouse { 2965b846095SAbhi Das struct bio *bio = *biop; 297e8c92ed7SSteven Whitehouse 298e8c92ed7SSteven Whitehouse if (bio) { 2995b846095SAbhi Das u64 nblk; 3005b846095SAbhi Das 301f73a1c7dSKent Overstreet nblk = bio_end_sector(bio); 302e8c92ed7SSteven Whitehouse nblk >>= sdp->sd_fsb2bb_shift; 3035b846095SAbhi Das if (blkno == nblk && !flush) 304e8c92ed7SSteven Whitehouse return bio; 305f4686c26SAbhi Das gfs2_log_submit_bio(biop, op); 306e8c92ed7SSteven Whitehouse } 307e8c92ed7SSteven Whitehouse 3085b846095SAbhi Das *biop = gfs2_log_alloc_bio(sdp, blkno, end_io); 3095b846095SAbhi Das return *biop; 310e8c92ed7SSteven Whitehouse } 311e8c92ed7SSteven Whitehouse 312e8c92ed7SSteven Whitehouse /** 313e8c92ed7SSteven Whitehouse * gfs2_log_write - write to log 31447ac5537SSteven Whitehouse * @sdp: the filesystem 315e8c92ed7SSteven Whitehouse * @page: the page to write 316e8c92ed7SSteven Whitehouse * @size: the size of the data to write 317e8c92ed7SSteven Whitehouse * @offset: the offset within the page 318c1696fb8SBob Peterson * @blkno: block number of the log entry 31947ac5537SSteven Whitehouse * 320e8c92ed7SSteven Whitehouse * Try and add the page segment to the current bio. If that fails, 321e8c92ed7SSteven Whitehouse * submit the current bio to the device and create a new one, and 322e8c92ed7SSteven Whitehouse * then add the page segment to that. 32347ac5537SSteven Whitehouse */ 32447ac5537SSteven Whitehouse 325*82218943SBob Peterson void gfs2_log_write(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd, 326*82218943SBob Peterson struct page *page, unsigned size, unsigned offset, 327*82218943SBob Peterson u64 blkno) 32847ac5537SSteven Whitehouse { 329e8c92ed7SSteven Whitehouse struct bio *bio; 330e8c92ed7SSteven Whitehouse int ret; 33147ac5537SSteven Whitehouse 332*82218943SBob Peterson bio = gfs2_log_get_bio(sdp, blkno, &jd->jd_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) { 336*82218943SBob Peterson bio = gfs2_log_get_bio(sdp, blkno, &jd->jd_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); 359*82218943SBob Peterson gfs2_log_write(sdp, sdp->sd_jdesc, bh->b_page, bh->b_size, 360*82218943SBob Peterson bh_offset(bh), dblock); 361e8c92ed7SSteven Whitehouse } 362e8c92ed7SSteven Whitehouse 363e8c92ed7SSteven Whitehouse /** 364e8c92ed7SSteven Whitehouse * gfs2_log_write_page - write one block stored in a page, into the log 365e8c92ed7SSteven Whitehouse * @sdp: The superblock 366e8c92ed7SSteven Whitehouse * @page: The struct page 367e8c92ed7SSteven Whitehouse * 368e8c92ed7SSteven Whitehouse * This writes the first block-sized part of the page into the log. Note 369e8c92ed7SSteven Whitehouse * that the page must have been allocated from the gfs2_page_pool mempool 370e8c92ed7SSteven Whitehouse * and that after this has been called, ownership has been transferred and 371e8c92ed7SSteven Whitehouse * the page may be freed at any time. 372e8c92ed7SSteven Whitehouse */ 373e8c92ed7SSteven Whitehouse 3742a6fe26cSBob Peterson static void gfs2_log_write_page(struct gfs2_sbd *sdp, struct page *page) 375e8c92ed7SSteven Whitehouse { 376e8c92ed7SSteven Whitehouse struct super_block *sb = sdp->sd_vfs; 37719ebc050SAndreas Gruenbacher u64 dblock; 37819ebc050SAndreas Gruenbacher 37919ebc050SAndreas Gruenbacher dblock = gfs2_log_bmap(sdp->sd_jdesc, sdp->sd_log_flush_head); 38019ebc050SAndreas Gruenbacher gfs2_log_incr_head(sdp); 381*82218943SBob Peterson gfs2_log_write(sdp, sdp->sd_jdesc, page, sb->s_blocksize, 0, dblock); 382e8c92ed7SSteven Whitehouse } 383e8c92ed7SSteven Whitehouse 384f4686c26SAbhi Das /** 385f4686c26SAbhi Das * gfs2_end_log_read - end I/O callback for reads from the log 386f4686c26SAbhi Das * @bio: The bio 387f4686c26SAbhi Das * 388f4686c26SAbhi Das * Simply unlock the pages in the bio. The main thread will wait on them and 389f4686c26SAbhi Das * process them in order as necessary. 390f4686c26SAbhi Das */ 391f4686c26SAbhi Das 392f4686c26SAbhi Das static void gfs2_end_log_read(struct bio *bio) 393f4686c26SAbhi Das { 394f4686c26SAbhi Das struct page *page; 395f4686c26SAbhi Das struct bio_vec *bvec; 396f4686c26SAbhi Das struct bvec_iter_all iter_all; 397f4686c26SAbhi Das 398ef75bd71SLinus Torvalds bio_for_each_segment_all(bvec, bio, iter_all) { 399f4686c26SAbhi Das page = bvec->bv_page; 400f4686c26SAbhi Das if (bio->bi_status) { 401f4686c26SAbhi Das int err = blk_status_to_errno(bio->bi_status); 402f4686c26SAbhi Das 403f4686c26SAbhi Das SetPageError(page); 404f4686c26SAbhi Das mapping_set_error(page->mapping, err); 405f4686c26SAbhi Das } 406f4686c26SAbhi Das unlock_page(page); 407f4686c26SAbhi Das } 408f4686c26SAbhi Das 409f4686c26SAbhi Das bio_put(bio); 410f4686c26SAbhi Das } 411f4686c26SAbhi Das 412f4686c26SAbhi Das /** 413f4686c26SAbhi Das * gfs2_jhead_pg_srch - Look for the journal head in a given page. 414f4686c26SAbhi Das * @jd: The journal descriptor 415f4686c26SAbhi Das * @page: The page to look in 416f4686c26SAbhi Das * 417f4686c26SAbhi Das * Returns: 1 if found, 0 otherwise. 418f4686c26SAbhi Das */ 419f4686c26SAbhi Das 420f4686c26SAbhi Das static bool gfs2_jhead_pg_srch(struct gfs2_jdesc *jd, 421f4686c26SAbhi Das struct gfs2_log_header_host *head, 422f4686c26SAbhi Das struct page *page) 423f4686c26SAbhi Das { 424f4686c26SAbhi Das struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 4253f649ab7SKees Cook struct gfs2_log_header_host lh; 426f4686c26SAbhi Das void *kaddr = kmap_atomic(page); 427f4686c26SAbhi Das unsigned int offset; 428f4686c26SAbhi Das bool ret = false; 429f4686c26SAbhi Das 430f4686c26SAbhi Das for (offset = 0; offset < PAGE_SIZE; offset += sdp->sd_sb.sb_bsize) { 431f4686c26SAbhi Das if (!__get_log_header(sdp, kaddr + offset, 0, &lh)) { 4327582026fSAbhi Das if (lh.lh_sequence >= head->lh_sequence) 433f4686c26SAbhi Das *head = lh; 434f4686c26SAbhi Das else { 435f4686c26SAbhi Das ret = true; 436f4686c26SAbhi Das break; 437f4686c26SAbhi Das } 438f4686c26SAbhi Das } 439f4686c26SAbhi Das } 440f4686c26SAbhi Das kunmap_atomic(kaddr); 441f4686c26SAbhi Das return ret; 442f4686c26SAbhi Das } 443f4686c26SAbhi Das 444f4686c26SAbhi Das /** 445f4686c26SAbhi Das * gfs2_jhead_process_page - Search/cleanup a page 446f4686c26SAbhi Das * @jd: The journal descriptor 447f4686c26SAbhi Das * @index: Index of the page to look into 448f4686c26SAbhi Das * @done: If set, perform only cleanup, else search and set if found. 449f4686c26SAbhi Das * 450f4686c26SAbhi Das * Find the page with 'index' in the journal's mapping. Search the page for 451f4686c26SAbhi Das * the journal head if requested (cleanup == false). Release refs on the 452f4686c26SAbhi Das * page so the page cache can reclaim it (put_page() twice). We grabbed a 453f4686c26SAbhi Das * reference on this page two times, first when we did a find_or_create_page() 454f4686c26SAbhi Das * to obtain the page to add it to the bio and second when we do a 455f4686c26SAbhi Das * find_get_page() here to get the page to wait on while I/O on it is being 456f4686c26SAbhi Das * completed. 457f4686c26SAbhi Das * This function is also used to free up a page we might've grabbed but not 458f4686c26SAbhi Das * used. Maybe we added it to a bio, but not submitted it for I/O. Or we 459f4686c26SAbhi Das * submitted the I/O, but we already found the jhead so we only need to drop 460f4686c26SAbhi Das * our references to the page. 461f4686c26SAbhi Das */ 462f4686c26SAbhi Das 463f4686c26SAbhi Das static void gfs2_jhead_process_page(struct gfs2_jdesc *jd, unsigned long index, 464f4686c26SAbhi Das struct gfs2_log_header_host *head, 465f4686c26SAbhi Das bool *done) 466f4686c26SAbhi Das { 467f4686c26SAbhi Das struct page *page; 468f4686c26SAbhi Das 469f4686c26SAbhi Das page = find_get_page(jd->jd_inode->i_mapping, index); 470f4686c26SAbhi Das wait_on_page_locked(page); 471f4686c26SAbhi Das 472f4686c26SAbhi Das if (PageError(page)) 473f4686c26SAbhi Das *done = true; 474f4686c26SAbhi Das 475f4686c26SAbhi Das if (!*done) 476f4686c26SAbhi Das *done = gfs2_jhead_pg_srch(jd, head, page); 477f4686c26SAbhi Das 478f4686c26SAbhi Das put_page(page); /* Once for find_get_page */ 479f4686c26SAbhi Das put_page(page); /* Once more for find_or_create_page */ 480f4686c26SAbhi Das } 481f4686c26SAbhi Das 482eed0f953SAndreas Gruenbacher static struct bio *gfs2_chain_bio(struct bio *prev, unsigned int nr_iovecs) 483eed0f953SAndreas Gruenbacher { 484eed0f953SAndreas Gruenbacher struct bio *new; 485eed0f953SAndreas Gruenbacher 486eed0f953SAndreas Gruenbacher new = bio_alloc(GFP_NOIO, nr_iovecs); 487eed0f953SAndreas Gruenbacher bio_copy_dev(new, prev); 488eed0f953SAndreas Gruenbacher new->bi_iter.bi_sector = bio_end_sector(prev); 489eed0f953SAndreas Gruenbacher new->bi_opf = prev->bi_opf; 490eed0f953SAndreas Gruenbacher new->bi_write_hint = prev->bi_write_hint; 491eed0f953SAndreas Gruenbacher bio_chain(new, prev); 492eed0f953SAndreas Gruenbacher submit_bio(prev); 493eed0f953SAndreas Gruenbacher return new; 494eed0f953SAndreas Gruenbacher } 495eed0f953SAndreas Gruenbacher 496f4686c26SAbhi Das /** 497f4686c26SAbhi Das * gfs2_find_jhead - find the head of a log 498f4686c26SAbhi Das * @jd: The journal descriptor 499f4686c26SAbhi Das * @head: The log descriptor for the head of the log is returned here 500f4686c26SAbhi Das * 501f4686c26SAbhi Das * Do a search of a journal by reading it in large chunks using bios and find 502f4686c26SAbhi Das * the valid log entry with the highest sequence number. (i.e. the log head) 503f4686c26SAbhi Das * 504f4686c26SAbhi Das * Returns: 0 on success, errno otherwise 505f4686c26SAbhi Das */ 506f4686c26SAbhi Das int gfs2_find_jhead(struct gfs2_jdesc *jd, struct gfs2_log_header_host *head, 507f4686c26SAbhi Das bool keep_cache) 508f4686c26SAbhi Das { 509f4686c26SAbhi Das struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 510f4686c26SAbhi Das struct address_space *mapping = jd->jd_inode->i_mapping; 511f4686c26SAbhi Das unsigned int block = 0, blocks_submitted = 0, blocks_read = 0; 512eed0f953SAndreas Gruenbacher unsigned int bsize = sdp->sd_sb.sb_bsize, off; 513f4686c26SAbhi Das unsigned int bsize_shift = sdp->sd_sb.sb_bsize_shift; 514f4686c26SAbhi Das unsigned int shift = PAGE_SHIFT - bsize_shift; 51520be493bSAndreas Gruenbacher unsigned int max_blocks = 2 * 1024 * 1024 >> bsize_shift; 516f4686c26SAbhi Das struct gfs2_journal_extent *je; 517f4686c26SAbhi Das int sz, ret = 0; 518f4686c26SAbhi Das struct bio *bio = NULL; 519f4686c26SAbhi Das struct page *page = NULL; 52020be493bSAndreas Gruenbacher bool done = false; 521f4686c26SAbhi Das errseq_t since; 522f4686c26SAbhi Das 523f4686c26SAbhi Das memset(head, 0, sizeof(*head)); 524f4686c26SAbhi Das if (list_empty(&jd->extent_list)) 525f4686c26SAbhi Das gfs2_map_journal_extents(sdp, jd); 526f4686c26SAbhi Das 527f4686c26SAbhi Das since = filemap_sample_wb_err(mapping); 528f4686c26SAbhi Das list_for_each_entry(je, &jd->extent_list, list) { 529eed0f953SAndreas Gruenbacher u64 dblock = je->dblock; 530f4686c26SAbhi Das 531eed0f953SAndreas Gruenbacher for (; block < je->lblock + je->blocks; block++, dblock++) { 532f4686c26SAbhi Das if (!page) { 533f4686c26SAbhi Das page = find_or_create_page(mapping, 534f4686c26SAbhi Das block >> shift, GFP_NOFS); 535f4686c26SAbhi Das if (!page) { 536f4686c26SAbhi Das ret = -ENOMEM; 537f4686c26SAbhi Das done = true; 538f4686c26SAbhi Das goto out; 539f4686c26SAbhi Das } 540eed0f953SAndreas Gruenbacher off = 0; 541eed0f953SAndreas Gruenbacher } 542eed0f953SAndreas Gruenbacher 54320be493bSAndreas Gruenbacher if (bio && (off || block < blocks_submitted + max_blocks)) { 544aa83da7fSAndreas Gruenbacher sector_t sector = dblock << sdp->sd_fsb2bb_shift; 545aa83da7fSAndreas Gruenbacher 546aa83da7fSAndreas Gruenbacher if (bio_end_sector(bio) == sector) { 547eed0f953SAndreas Gruenbacher sz = bio_add_page(bio, page, bsize, off); 548eed0f953SAndreas Gruenbacher if (sz == bsize) 549eed0f953SAndreas Gruenbacher goto block_added; 550aa83da7fSAndreas Gruenbacher } 551eed0f953SAndreas Gruenbacher if (off) { 552eed0f953SAndreas Gruenbacher unsigned int blocks = 553eed0f953SAndreas Gruenbacher (PAGE_SIZE - off) >> bsize_shift; 554eed0f953SAndreas Gruenbacher 555eed0f953SAndreas Gruenbacher bio = gfs2_chain_bio(bio, blocks); 556eed0f953SAndreas Gruenbacher goto add_block_to_new_bio; 557eed0f953SAndreas Gruenbacher } 558f4686c26SAbhi Das } 559f4686c26SAbhi Das 560f4686c26SAbhi Das if (bio) { 56120be493bSAndreas Gruenbacher blocks_submitted = block; 562f4686c26SAbhi Das submit_bio(bio); 563f4686c26SAbhi Das } 564f4686c26SAbhi Das 565f4686c26SAbhi Das bio = gfs2_log_alloc_bio(sdp, dblock, gfs2_end_log_read); 566f4686c26SAbhi Das bio->bi_opf = REQ_OP_READ; 567eed0f953SAndreas Gruenbacher add_block_to_new_bio: 568eed0f953SAndreas Gruenbacher sz = bio_add_page(bio, page, bsize, off); 569eed0f953SAndreas Gruenbacher BUG_ON(sz != bsize); 570eed0f953SAndreas Gruenbacher block_added: 571eed0f953SAndreas Gruenbacher off += bsize; 572eed0f953SAndreas Gruenbacher if (off == PAGE_SIZE) 573f4686c26SAbhi Das page = NULL; 57420be493bSAndreas Gruenbacher if (blocks_submitted <= blocks_read + max_blocks) { 575f4686c26SAbhi Das /* Keep at least one bio in flight */ 576f4686c26SAbhi Das continue; 577f4686c26SAbhi Das } 578f4686c26SAbhi Das 579f4686c26SAbhi Das gfs2_jhead_process_page(jd, blocks_read >> shift, head, &done); 580f4686c26SAbhi Das blocks_read += PAGE_SIZE >> bsize_shift; 581f4686c26SAbhi Das if (done) 582f4686c26SAbhi Das goto out; /* found */ 583f4686c26SAbhi Das } 584f4686c26SAbhi Das } 585f4686c26SAbhi Das 586f4686c26SAbhi Das out: 587f4686c26SAbhi Das if (bio) 588f4686c26SAbhi Das submit_bio(bio); 589f4686c26SAbhi Das while (blocks_read < block) { 590f4686c26SAbhi Das gfs2_jhead_process_page(jd, blocks_read >> shift, head, &done); 591f4686c26SAbhi Das blocks_read += PAGE_SIZE >> bsize_shift; 592f4686c26SAbhi Das } 593f4686c26SAbhi Das 594f4686c26SAbhi Das if (!ret) 595f4686c26SAbhi Das ret = filemap_check_wb_err(mapping, since); 596f4686c26SAbhi Das 597f4686c26SAbhi Das if (!keep_cache) 598f4686c26SAbhi Das truncate_inode_pages(mapping, 0); 599f4686c26SAbhi Das 600f4686c26SAbhi Das return ret; 601f4686c26SAbhi Das } 602f4686c26SAbhi Das 603dad30e90SSteven Whitehouse static struct page *gfs2_get_log_desc(struct gfs2_sbd *sdp, u32 ld_type, 604dad30e90SSteven Whitehouse u32 ld_length, u32 ld_data1) 605e8c92ed7SSteven Whitehouse { 606144a4c2fSSteven Whitehouse struct page *page = mempool_alloc(gfs2_page_pool, GFP_NOIO); 607e8c92ed7SSteven Whitehouse struct gfs2_log_descriptor *ld = page_address(page); 608e8c92ed7SSteven Whitehouse clear_page(ld); 60916615be1SSteven Whitehouse ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC); 61016615be1SSteven Whitehouse ld->ld_header.mh_type = cpu_to_be32(GFS2_METATYPE_LD); 61116615be1SSteven Whitehouse ld->ld_header.mh_format = cpu_to_be32(GFS2_FORMAT_LD); 61216615be1SSteven Whitehouse ld->ld_type = cpu_to_be32(ld_type); 613dad30e90SSteven Whitehouse ld->ld_length = cpu_to_be32(ld_length); 614dad30e90SSteven Whitehouse ld->ld_data1 = cpu_to_be32(ld_data1); 61516615be1SSteven Whitehouse ld->ld_data2 = 0; 616e8c92ed7SSteven Whitehouse return page; 61716615be1SSteven Whitehouse } 61816615be1SSteven Whitehouse 619dad30e90SSteven Whitehouse static void gfs2_check_magic(struct buffer_head *bh) 620dad30e90SSteven Whitehouse { 621dad30e90SSteven Whitehouse void *kaddr; 622dad30e90SSteven Whitehouse __be32 *ptr; 623dad30e90SSteven Whitehouse 624dad30e90SSteven Whitehouse clear_buffer_escaped(bh); 625dad30e90SSteven Whitehouse kaddr = kmap_atomic(bh->b_page); 626dad30e90SSteven Whitehouse ptr = kaddr + bh_offset(bh); 627dad30e90SSteven Whitehouse if (*ptr == cpu_to_be32(GFS2_MAGIC)) 628dad30e90SSteven Whitehouse set_buffer_escaped(bh); 629dad30e90SSteven Whitehouse kunmap_atomic(kaddr); 630dad30e90SSteven Whitehouse } 631dad30e90SSteven Whitehouse 6327f63257dSBenjamin Marzinski static int blocknr_cmp(void *priv, struct list_head *a, struct list_head *b) 6337f63257dSBenjamin Marzinski { 6347f63257dSBenjamin Marzinski struct gfs2_bufdata *bda, *bdb; 6357f63257dSBenjamin Marzinski 6367f63257dSBenjamin Marzinski bda = list_entry(a, struct gfs2_bufdata, bd_list); 6377f63257dSBenjamin Marzinski bdb = list_entry(b, struct gfs2_bufdata, bd_list); 6387f63257dSBenjamin Marzinski 6397f63257dSBenjamin Marzinski if (bda->bd_bh->b_blocknr < bdb->bd_bh->b_blocknr) 6407f63257dSBenjamin Marzinski return -1; 6417f63257dSBenjamin Marzinski if (bda->bd_bh->b_blocknr > bdb->bd_bh->b_blocknr) 6427f63257dSBenjamin Marzinski return 1; 6437f63257dSBenjamin Marzinski return 0; 6447f63257dSBenjamin Marzinski } 6457f63257dSBenjamin Marzinski 646dad30e90SSteven Whitehouse static void gfs2_before_commit(struct gfs2_sbd *sdp, unsigned int limit, 647dad30e90SSteven Whitehouse unsigned int total, struct list_head *blist, 648dad30e90SSteven Whitehouse bool is_databuf) 649b3b94faaSDavid Teigland { 650b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld; 651b3b94faaSDavid Teigland struct gfs2_bufdata *bd1 = NULL, *bd2; 652e8c92ed7SSteven Whitehouse struct page *page; 653b3b94faaSDavid Teigland unsigned int num; 654b3b94faaSDavid Teigland unsigned n; 655b3b94faaSDavid Teigland __be64 *ptr; 656b3b94faaSDavid Teigland 657905d2aefSBob Peterson gfs2_log_lock(sdp); 6587f63257dSBenjamin Marzinski list_sort(NULL, blist, blocknr_cmp); 659c0752aa7SBob Peterson bd1 = bd2 = list_prepare_entry(bd1, blist, bd_list); 660b3b94faaSDavid Teigland while(total) { 661b3b94faaSDavid Teigland num = total; 662b3b94faaSDavid Teigland if (total > limit) 663b3b94faaSDavid Teigland num = limit; 664905d2aefSBob Peterson gfs2_log_unlock(sdp); 6654a586812SBob Peterson page = gfs2_get_log_desc(sdp, 6664a586812SBob Peterson is_databuf ? GFS2_LOG_DESC_JDATA : 6674a586812SBob Peterson GFS2_LOG_DESC_METADATA, num + 1, num); 668e8c92ed7SSteven Whitehouse ld = page_address(page); 669905d2aefSBob Peterson gfs2_log_lock(sdp); 670e8c92ed7SSteven Whitehouse ptr = (__be64 *)(ld + 1); 671b3b94faaSDavid Teigland 672b3b94faaSDavid Teigland n = 0; 673c0752aa7SBob Peterson list_for_each_entry_continue(bd1, blist, bd_list) { 674b3b94faaSDavid Teigland *ptr++ = cpu_to_be64(bd1->bd_bh->b_blocknr); 675dad30e90SSteven Whitehouse if (is_databuf) { 676dad30e90SSteven Whitehouse gfs2_check_magic(bd1->bd_bh); 677dad30e90SSteven Whitehouse *ptr++ = cpu_to_be64(buffer_escaped(bd1->bd_bh) ? 1 : 0); 678dad30e90SSteven Whitehouse } 679b3b94faaSDavid Teigland if (++n >= num) 680b3b94faaSDavid Teigland break; 681b3b94faaSDavid Teigland } 682b3b94faaSDavid Teigland 683905d2aefSBob Peterson gfs2_log_unlock(sdp); 684e8c92ed7SSteven Whitehouse gfs2_log_write_page(sdp, page); 685905d2aefSBob Peterson gfs2_log_lock(sdp); 686b3b94faaSDavid Teigland 687b3b94faaSDavid Teigland n = 0; 688c0752aa7SBob Peterson list_for_each_entry_continue(bd2, blist, bd_list) { 68916615be1SSteven Whitehouse get_bh(bd2->bd_bh); 690905d2aefSBob Peterson gfs2_log_unlock(sdp); 69116615be1SSteven Whitehouse lock_buffer(bd2->bd_bh); 692dad30e90SSteven Whitehouse 693dad30e90SSteven Whitehouse if (buffer_escaped(bd2->bd_bh)) { 694dad30e90SSteven Whitehouse void *kaddr; 695dad30e90SSteven Whitehouse page = mempool_alloc(gfs2_page_pool, GFP_NOIO); 696dad30e90SSteven Whitehouse ptr = page_address(page); 697dad30e90SSteven Whitehouse kaddr = kmap_atomic(bd2->bd_bh->b_page); 698dad30e90SSteven Whitehouse memcpy(ptr, kaddr + bh_offset(bd2->bd_bh), 699dad30e90SSteven Whitehouse bd2->bd_bh->b_size); 700dad30e90SSteven Whitehouse kunmap_atomic(kaddr); 701dad30e90SSteven Whitehouse *(__be32 *)ptr = 0; 702dad30e90SSteven Whitehouse clear_buffer_escaped(bd2->bd_bh); 703dad30e90SSteven Whitehouse unlock_buffer(bd2->bd_bh); 704dad30e90SSteven Whitehouse brelse(bd2->bd_bh); 705dad30e90SSteven Whitehouse gfs2_log_write_page(sdp, page); 706dad30e90SSteven Whitehouse } else { 707e8c92ed7SSteven Whitehouse gfs2_log_write_bh(sdp, bd2->bd_bh); 708dad30e90SSteven Whitehouse } 709905d2aefSBob Peterson gfs2_log_lock(sdp); 710b3b94faaSDavid Teigland if (++n >= num) 711b3b94faaSDavid Teigland break; 712b3b94faaSDavid Teigland } 713b3b94faaSDavid Teigland 714905d2aefSBob Peterson BUG_ON(total < num); 715b3b94faaSDavid Teigland total -= num; 716b3b94faaSDavid Teigland } 717905d2aefSBob Peterson gfs2_log_unlock(sdp); 718b3b94faaSDavid Teigland } 719b3b94faaSDavid Teigland 720d69a3c65SSteven Whitehouse static void buf_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 721dad30e90SSteven Whitehouse { 722dad30e90SSteven Whitehouse unsigned int limit = buf_limit(sdp); /* 503 for 4k blocks */ 723022ef4feSSteven Whitehouse unsigned int nbuf; 724d69a3c65SSteven Whitehouse if (tr == NULL) 725d69a3c65SSteven Whitehouse return; 726022ef4feSSteven Whitehouse nbuf = tr->tr_num_buf_new - tr->tr_num_buf_rm; 727022ef4feSSteven Whitehouse gfs2_before_commit(sdp, limit, nbuf, &tr->tr_buf, 0); 728dad30e90SSteven Whitehouse } 729dad30e90SSteven Whitehouse 73016ca9412SBenjamin Marzinski static void buf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 731b3b94faaSDavid Teigland { 732d69a3c65SSteven Whitehouse struct list_head *head; 733b3b94faaSDavid Teigland struct gfs2_bufdata *bd; 734b3b94faaSDavid Teigland 735d69a3c65SSteven Whitehouse if (tr == NULL) 73616ca9412SBenjamin Marzinski return; 73716ca9412SBenjamin Marzinski 738d69a3c65SSteven Whitehouse head = &tr->tr_buf; 739b3b94faaSDavid Teigland while (!list_empty(head)) { 740969183bcSAndreas Gruenbacher bd = list_first_entry(head, struct gfs2_bufdata, bd_list); 741c0752aa7SBob Peterson list_del_init(&bd->bd_list); 74216ca9412SBenjamin Marzinski gfs2_unpin(sdp, bd->bd_bh, tr); 743b3b94faaSDavid Teigland } 744b3b94faaSDavid Teigland } 745b3b94faaSDavid Teigland 746b3b94faaSDavid Teigland static void buf_lo_before_scan(struct gfs2_jdesc *jd, 74755167622SAl Viro struct gfs2_log_header_host *head, int pass) 748b3b94faaSDavid Teigland { 749b3b94faaSDavid Teigland if (pass != 0) 750b3b94faaSDavid Teigland return; 751b3b94faaSDavid Teigland 752a17d758bSBob Peterson jd->jd_found_blocks = 0; 753a17d758bSBob Peterson jd->jd_replayed_blocks = 0; 754b3b94faaSDavid Teigland } 755b3b94faaSDavid Teigland 7567c70b896SBob Peterson static int buf_lo_scan_elements(struct gfs2_jdesc *jd, u32 start, 757b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld, __be64 *ptr, 758b3b94faaSDavid Teigland int pass) 759b3b94faaSDavid Teigland { 760feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 761feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 7625c676f6dSSteven Whitehouse struct gfs2_glock *gl = ip->i_gl; 763b3b94faaSDavid Teigland unsigned int blks = be32_to_cpu(ld->ld_data1); 764b3b94faaSDavid Teigland struct buffer_head *bh_log, *bh_ip; 765cd915493SSteven Whitehouse u64 blkno; 766b3b94faaSDavid Teigland int error = 0; 767b3b94faaSDavid Teigland 768b3b94faaSDavid Teigland if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_METADATA) 769b3b94faaSDavid Teigland return 0; 770b3b94faaSDavid Teigland 771e1cb6be9SBob Peterson gfs2_replay_incr_blk(jd, &start); 772b3b94faaSDavid Teigland 773e1cb6be9SBob Peterson for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { 774b3b94faaSDavid Teigland blkno = be64_to_cpu(*ptr++); 775b3b94faaSDavid Teigland 776a17d758bSBob Peterson jd->jd_found_blocks++; 777b3b94faaSDavid Teigland 778a17d758bSBob Peterson if (gfs2_revoke_check(jd, blkno, start)) 779b3b94faaSDavid Teigland continue; 780b3b94faaSDavid Teigland 781b3b94faaSDavid Teigland error = gfs2_replay_read_block(jd, start, &bh_log); 782b3b94faaSDavid Teigland if (error) 783b3b94faaSDavid Teigland return error; 784b3b94faaSDavid Teigland 785b3b94faaSDavid Teigland bh_ip = gfs2_meta_new(gl, blkno); 786b3b94faaSDavid Teigland memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); 787b3b94faaSDavid Teigland 788b3b94faaSDavid Teigland if (gfs2_meta_check(sdp, bh_ip)) 789b3b94faaSDavid Teigland error = -EIO; 790d14e1ca3SBob Peterson else { 791d14e1ca3SBob Peterson struct gfs2_meta_header *mh = 792d14e1ca3SBob Peterson (struct gfs2_meta_header *)bh_ip->b_data; 793b3b94faaSDavid Teigland 794d14e1ca3SBob Peterson if (mh->mh_type == cpu_to_be32(GFS2_METATYPE_RG)) { 795d14e1ca3SBob Peterson struct gfs2_rgrpd *rgd; 796d14e1ca3SBob Peterson 797d14e1ca3SBob Peterson rgd = gfs2_blk2rgrpd(sdp, blkno, false); 798d14e1ca3SBob Peterson if (rgd && rgd->rd_addr == blkno && 799d14e1ca3SBob Peterson rgd->rd_bits && rgd->rd_bits->bi_bh) { 800d14e1ca3SBob Peterson fs_info(sdp, "Replaying 0x%llx but we " 801d14e1ca3SBob Peterson "already have a bh!\n", 802d14e1ca3SBob Peterson (unsigned long long)blkno); 803d14e1ca3SBob Peterson fs_info(sdp, "busy:%d, pinned:%d\n", 804d14e1ca3SBob Peterson buffer_busy(rgd->rd_bits->bi_bh) ? 1 : 0, 805d14e1ca3SBob Peterson buffer_pinned(rgd->rd_bits->bi_bh)); 8063792ce97SBob Peterson gfs2_dump_glock(NULL, rgd->rd_gl, true); 807d14e1ca3SBob Peterson } 808d14e1ca3SBob Peterson } 809d14e1ca3SBob Peterson mark_buffer_dirty(bh_ip); 810d14e1ca3SBob Peterson } 811b3b94faaSDavid Teigland brelse(bh_log); 812b3b94faaSDavid Teigland brelse(bh_ip); 813b3b94faaSDavid Teigland 814b3b94faaSDavid Teigland if (error) 815b3b94faaSDavid Teigland break; 816b3b94faaSDavid Teigland 817a17d758bSBob Peterson jd->jd_replayed_blocks++; 818b3b94faaSDavid Teigland } 819b3b94faaSDavid Teigland 820b3b94faaSDavid Teigland return error; 821b3b94faaSDavid Teigland } 822b3b94faaSDavid Teigland 823b3b94faaSDavid Teigland static void buf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 824b3b94faaSDavid Teigland { 825feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 826feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 827b3b94faaSDavid Teigland 828b3b94faaSDavid Teigland if (error) { 8294a55752aSBob Peterson gfs2_inode_metasync(ip->i_gl); 830b3b94faaSDavid Teigland return; 831b3b94faaSDavid Teigland } 832b3b94faaSDavid Teigland if (pass != 1) 833b3b94faaSDavid Teigland return; 834b3b94faaSDavid Teigland 8354a55752aSBob Peterson gfs2_inode_metasync(ip->i_gl); 836b3b94faaSDavid Teigland 837b3b94faaSDavid Teigland fs_info(sdp, "jid=%u: Replayed %u of %u blocks\n", 838a17d758bSBob Peterson jd->jd_jid, jd->jd_replayed_blocks, jd->jd_found_blocks); 839b3b94faaSDavid Teigland } 840b3b94faaSDavid Teigland 841d69a3c65SSteven Whitehouse static void revoke_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 842b3b94faaSDavid Teigland { 843b3b94faaSDavid Teigland struct gfs2_meta_header *mh; 844b3b94faaSDavid Teigland unsigned int offset; 845a5b1d3fcSAndreas Gruenbacher struct list_head *head = &sdp->sd_log_revokes; 84682e86087SSteven Whitehouse struct gfs2_bufdata *bd; 847e8c92ed7SSteven Whitehouse struct page *page; 848dad30e90SSteven Whitehouse unsigned int length; 849b3b94faaSDavid Teigland 8505d054964SBenjamin Marzinski gfs2_write_revokes(sdp); 851b3b94faaSDavid Teigland if (!sdp->sd_log_num_revoke) 852b3b94faaSDavid Teigland return; 853b3b94faaSDavid Teigland 8542e9eeaa1SBob Peterson length = gfs2_struct2blk(sdp, sdp->sd_log_num_revoke); 855dad30e90SSteven Whitehouse page = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_REVOKE, length, sdp->sd_log_num_revoke); 856b3b94faaSDavid Teigland offset = sizeof(struct gfs2_log_descriptor); 857b3b94faaSDavid Teigland 858c0752aa7SBob Peterson list_for_each_entry(bd, head, bd_list) { 859b3b94faaSDavid Teigland sdp->sd_log_num_revoke--; 860b3b94faaSDavid Teigland 861cd915493SSteven Whitehouse if (offset + sizeof(u64) > sdp->sd_sb.sb_bsize) { 862b3b94faaSDavid Teigland 863e8c92ed7SSteven Whitehouse gfs2_log_write_page(sdp, page); 864e8c92ed7SSteven Whitehouse page = mempool_alloc(gfs2_page_pool, GFP_NOIO); 865e8c92ed7SSteven Whitehouse mh = page_address(page); 866e8c92ed7SSteven Whitehouse clear_page(mh); 867b3b94faaSDavid Teigland mh->mh_magic = cpu_to_be32(GFS2_MAGIC); 868e3167dedSSteven Whitehouse mh->mh_type = cpu_to_be32(GFS2_METATYPE_LB); 869e3167dedSSteven Whitehouse mh->mh_format = cpu_to_be32(GFS2_FORMAT_LB); 870b3b94faaSDavid Teigland offset = sizeof(struct gfs2_meta_header); 871b3b94faaSDavid Teigland } 872b3b94faaSDavid Teigland 873e8c92ed7SSteven Whitehouse *(__be64 *)(page_address(page) + offset) = cpu_to_be64(bd->bd_blkno); 874cd915493SSteven Whitehouse offset += sizeof(u64); 875b3b94faaSDavid Teigland } 876b3b94faaSDavid Teigland gfs2_assert_withdraw(sdp, !sdp->sd_log_num_revoke); 877b3b94faaSDavid Teigland 878e8c92ed7SSteven Whitehouse gfs2_log_write_page(sdp, page); 879b3b94faaSDavid Teigland } 880b3b94faaSDavid Teigland 88116ca9412SBenjamin Marzinski static void revoke_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 882f42ab085SSteven Whitehouse { 883a5b1d3fcSAndreas Gruenbacher struct list_head *head = &sdp->sd_log_revokes; 884638803d4SBob Peterson struct gfs2_bufdata *bd; 885638803d4SBob Peterson struct gfs2_glock *gl; 886f42ab085SSteven Whitehouse 887638803d4SBob Peterson while (!list_empty(head)) { 888969183bcSAndreas Gruenbacher bd = list_first_entry(head, struct gfs2_bufdata, bd_list); 889638803d4SBob Peterson list_del_init(&bd->bd_list); 890638803d4SBob Peterson gl = bd->bd_gl; 891fe5e7ba1SBob Peterson gfs2_glock_remove_revoke(gl); 892638803d4SBob Peterson kmem_cache_free(gfs2_bufdata_cachep, bd); 893638803d4SBob Peterson } 894f42ab085SSteven Whitehouse } 895f42ab085SSteven Whitehouse 896b3b94faaSDavid Teigland static void revoke_lo_before_scan(struct gfs2_jdesc *jd, 89755167622SAl Viro struct gfs2_log_header_host *head, int pass) 898b3b94faaSDavid Teigland { 899b3b94faaSDavid Teigland if (pass != 0) 900b3b94faaSDavid Teigland return; 901b3b94faaSDavid Teigland 902a17d758bSBob Peterson jd->jd_found_revokes = 0; 903a17d758bSBob Peterson jd->jd_replay_tail = head->lh_tail; 904b3b94faaSDavid Teigland } 905b3b94faaSDavid Teigland 9067c70b896SBob Peterson static int revoke_lo_scan_elements(struct gfs2_jdesc *jd, u32 start, 907b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld, __be64 *ptr, 908b3b94faaSDavid Teigland int pass) 909b3b94faaSDavid Teigland { 910feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 911b3b94faaSDavid Teigland unsigned int blks = be32_to_cpu(ld->ld_length); 912b3b94faaSDavid Teigland unsigned int revokes = be32_to_cpu(ld->ld_data1); 913b3b94faaSDavid Teigland struct buffer_head *bh; 914b3b94faaSDavid Teigland unsigned int offset; 915cd915493SSteven Whitehouse u64 blkno; 916b3b94faaSDavid Teigland int first = 1; 917b3b94faaSDavid Teigland int error; 918b3b94faaSDavid Teigland 919b3b94faaSDavid Teigland if (pass != 0 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_REVOKE) 920b3b94faaSDavid Teigland return 0; 921b3b94faaSDavid Teigland 922b3b94faaSDavid Teigland offset = sizeof(struct gfs2_log_descriptor); 923b3b94faaSDavid Teigland 924e1cb6be9SBob Peterson for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { 925b3b94faaSDavid Teigland error = gfs2_replay_read_block(jd, start, &bh); 926b3b94faaSDavid Teigland if (error) 927b3b94faaSDavid Teigland return error; 928b3b94faaSDavid Teigland 929b3b94faaSDavid Teigland if (!first) 930b3b94faaSDavid Teigland gfs2_metatype_check(sdp, bh, GFS2_METATYPE_LB); 931b3b94faaSDavid Teigland 932cd915493SSteven Whitehouse while (offset + sizeof(u64) <= sdp->sd_sb.sb_bsize) { 933b3b94faaSDavid Teigland blkno = be64_to_cpu(*(__be64 *)(bh->b_data + offset)); 934b3b94faaSDavid Teigland 935a17d758bSBob Peterson error = gfs2_revoke_add(jd, blkno, start); 9363ad62e87SBob Peterson if (error < 0) { 9373ad62e87SBob Peterson brelse(bh); 938b3b94faaSDavid Teigland return error; 9393ad62e87SBob Peterson } 940b3b94faaSDavid Teigland else if (error) 941a17d758bSBob Peterson jd->jd_found_revokes++; 942b3b94faaSDavid Teigland 943b3b94faaSDavid Teigland if (!--revokes) 944b3b94faaSDavid Teigland break; 945cd915493SSteven Whitehouse offset += sizeof(u64); 946b3b94faaSDavid Teigland } 947b3b94faaSDavid Teigland 948b3b94faaSDavid Teigland brelse(bh); 949b3b94faaSDavid Teigland offset = sizeof(struct gfs2_meta_header); 950b3b94faaSDavid Teigland first = 0; 951b3b94faaSDavid Teigland } 952b3b94faaSDavid Teigland 953b3b94faaSDavid Teigland return 0; 954b3b94faaSDavid Teigland } 955b3b94faaSDavid Teigland 956b3b94faaSDavid Teigland static void revoke_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 957b3b94faaSDavid Teigland { 958feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 959b3b94faaSDavid Teigland 960b3b94faaSDavid Teigland if (error) { 961a17d758bSBob Peterson gfs2_revoke_clean(jd); 962b3b94faaSDavid Teigland return; 963b3b94faaSDavid Teigland } 964b3b94faaSDavid Teigland if (pass != 1) 965b3b94faaSDavid Teigland return; 966b3b94faaSDavid Teigland 967b3b94faaSDavid Teigland fs_info(sdp, "jid=%u: Found %u revoke tags\n", 968a17d758bSBob Peterson jd->jd_jid, jd->jd_found_revokes); 969b3b94faaSDavid Teigland 970a17d758bSBob Peterson gfs2_revoke_clean(jd); 971b3b94faaSDavid Teigland } 972b3b94faaSDavid Teigland 97318ec7d5cSSteven Whitehouse /** 97418ec7d5cSSteven Whitehouse * databuf_lo_before_commit - Scan the data buffers, writing as we go 97518ec7d5cSSteven Whitehouse * 97618ec7d5cSSteven Whitehouse */ 977d7b616e2SSteven Whitehouse 978d69a3c65SSteven Whitehouse static void databuf_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 979b3b94faaSDavid Teigland { 980022ef4feSSteven Whitehouse unsigned int limit = databuf_limit(sdp); 981022ef4feSSteven Whitehouse unsigned int nbuf; 982d69a3c65SSteven Whitehouse if (tr == NULL) 983d69a3c65SSteven Whitehouse return; 984022ef4feSSteven Whitehouse nbuf = tr->tr_num_databuf_new - tr->tr_num_databuf_rm; 985022ef4feSSteven Whitehouse gfs2_before_commit(sdp, limit, nbuf, &tr->tr_databuf, 1); 986b3b94faaSDavid Teigland } 987b3b94faaSDavid Teigland 9887c70b896SBob Peterson static int databuf_lo_scan_elements(struct gfs2_jdesc *jd, u32 start, 98918ec7d5cSSteven Whitehouse struct gfs2_log_descriptor *ld, 99018ec7d5cSSteven Whitehouse __be64 *ptr, int pass) 99118ec7d5cSSteven Whitehouse { 992feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 9935c676f6dSSteven Whitehouse struct gfs2_glock *gl = ip->i_gl; 99418ec7d5cSSteven Whitehouse unsigned int blks = be32_to_cpu(ld->ld_data1); 99518ec7d5cSSteven Whitehouse struct buffer_head *bh_log, *bh_ip; 996cd915493SSteven Whitehouse u64 blkno; 997cd915493SSteven Whitehouse u64 esc; 99818ec7d5cSSteven Whitehouse int error = 0; 99918ec7d5cSSteven Whitehouse 100018ec7d5cSSteven Whitehouse if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_JDATA) 100118ec7d5cSSteven Whitehouse return 0; 100218ec7d5cSSteven Whitehouse 1003e1cb6be9SBob Peterson gfs2_replay_incr_blk(jd, &start); 1004e1cb6be9SBob Peterson for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { 100518ec7d5cSSteven Whitehouse blkno = be64_to_cpu(*ptr++); 100618ec7d5cSSteven Whitehouse esc = be64_to_cpu(*ptr++); 100718ec7d5cSSteven Whitehouse 1008a17d758bSBob Peterson jd->jd_found_blocks++; 100918ec7d5cSSteven Whitehouse 1010a17d758bSBob Peterson if (gfs2_revoke_check(jd, blkno, start)) 101118ec7d5cSSteven Whitehouse continue; 101218ec7d5cSSteven Whitehouse 101318ec7d5cSSteven Whitehouse error = gfs2_replay_read_block(jd, start, &bh_log); 101418ec7d5cSSteven Whitehouse if (error) 101518ec7d5cSSteven Whitehouse return error; 101618ec7d5cSSteven Whitehouse 101718ec7d5cSSteven Whitehouse bh_ip = gfs2_meta_new(gl, blkno); 101818ec7d5cSSteven Whitehouse memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); 101918ec7d5cSSteven Whitehouse 102018ec7d5cSSteven Whitehouse /* Unescape */ 102118ec7d5cSSteven Whitehouse if (esc) { 102218ec7d5cSSteven Whitehouse __be32 *eptr = (__be32 *)bh_ip->b_data; 102318ec7d5cSSteven Whitehouse *eptr = cpu_to_be32(GFS2_MAGIC); 102418ec7d5cSSteven Whitehouse } 102518ec7d5cSSteven Whitehouse mark_buffer_dirty(bh_ip); 102618ec7d5cSSteven Whitehouse 102718ec7d5cSSteven Whitehouse brelse(bh_log); 102818ec7d5cSSteven Whitehouse brelse(bh_ip); 102918ec7d5cSSteven Whitehouse 1030a17d758bSBob Peterson jd->jd_replayed_blocks++; 103118ec7d5cSSteven Whitehouse } 103218ec7d5cSSteven Whitehouse 103318ec7d5cSSteven Whitehouse return error; 103418ec7d5cSSteven Whitehouse } 103518ec7d5cSSteven Whitehouse 103618ec7d5cSSteven Whitehouse /* FIXME: sort out accounting for log blocks etc. */ 103718ec7d5cSSteven Whitehouse 103818ec7d5cSSteven Whitehouse static void databuf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 103918ec7d5cSSteven Whitehouse { 1040feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 1041feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 104218ec7d5cSSteven Whitehouse 104318ec7d5cSSteven Whitehouse if (error) { 10444a55752aSBob Peterson gfs2_inode_metasync(ip->i_gl); 104518ec7d5cSSteven Whitehouse return; 104618ec7d5cSSteven Whitehouse } 104718ec7d5cSSteven Whitehouse if (pass != 1) 104818ec7d5cSSteven Whitehouse return; 104918ec7d5cSSteven Whitehouse 105018ec7d5cSSteven Whitehouse /* data sync? */ 10514a55752aSBob Peterson gfs2_inode_metasync(ip->i_gl); 105218ec7d5cSSteven Whitehouse 105318ec7d5cSSteven Whitehouse fs_info(sdp, "jid=%u: Replayed %u of %u data blocks\n", 1054a17d758bSBob Peterson jd->jd_jid, jd->jd_replayed_blocks, jd->jd_found_blocks); 105518ec7d5cSSteven Whitehouse } 105618ec7d5cSSteven Whitehouse 105716ca9412SBenjamin Marzinski static void databuf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 105818ec7d5cSSteven Whitehouse { 1059d69a3c65SSteven Whitehouse struct list_head *head; 106018ec7d5cSSteven Whitehouse struct gfs2_bufdata *bd; 106118ec7d5cSSteven Whitehouse 1062d69a3c65SSteven Whitehouse if (tr == NULL) 106316ca9412SBenjamin Marzinski return; 106416ca9412SBenjamin Marzinski 1065d69a3c65SSteven Whitehouse head = &tr->tr_databuf; 106618ec7d5cSSteven Whitehouse while (!list_empty(head)) { 1067969183bcSAndreas Gruenbacher bd = list_first_entry(head, struct gfs2_bufdata, bd_list); 1068c0752aa7SBob Peterson list_del_init(&bd->bd_list); 106916ca9412SBenjamin Marzinski gfs2_unpin(sdp, bd->bd_bh, tr); 107018ec7d5cSSteven Whitehouse } 107118ec7d5cSSteven Whitehouse } 107218ec7d5cSSteven Whitehouse 107318ec7d5cSSteven Whitehouse 107432ac43f6SAndreas Gruenbacher static const struct gfs2_log_operations gfs2_buf_lops = { 1075b3b94faaSDavid Teigland .lo_before_commit = buf_lo_before_commit, 1076b3b94faaSDavid Teigland .lo_after_commit = buf_lo_after_commit, 1077b3b94faaSDavid Teigland .lo_before_scan = buf_lo_before_scan, 1078b3b94faaSDavid Teigland .lo_scan_elements = buf_lo_scan_elements, 1079b3b94faaSDavid Teigland .lo_after_scan = buf_lo_after_scan, 1080ea67eedbSSteven Whitehouse .lo_name = "buf", 1081b3b94faaSDavid Teigland }; 1082b3b94faaSDavid Teigland 108332ac43f6SAndreas Gruenbacher static const struct gfs2_log_operations gfs2_revoke_lops = { 1084b3b94faaSDavid Teigland .lo_before_commit = revoke_lo_before_commit, 1085f42ab085SSteven Whitehouse .lo_after_commit = revoke_lo_after_commit, 1086b3b94faaSDavid Teigland .lo_before_scan = revoke_lo_before_scan, 1087b3b94faaSDavid Teigland .lo_scan_elements = revoke_lo_scan_elements, 1088b3b94faaSDavid Teigland .lo_after_scan = revoke_lo_after_scan, 1089ea67eedbSSteven Whitehouse .lo_name = "revoke", 1090b3b94faaSDavid Teigland }; 1091b3b94faaSDavid Teigland 109232ac43f6SAndreas Gruenbacher static const struct gfs2_log_operations gfs2_databuf_lops = { 1093b3b94faaSDavid Teigland .lo_before_commit = databuf_lo_before_commit, 109418ec7d5cSSteven Whitehouse .lo_after_commit = databuf_lo_after_commit, 109518ec7d5cSSteven Whitehouse .lo_scan_elements = databuf_lo_scan_elements, 109618ec7d5cSSteven Whitehouse .lo_after_scan = databuf_lo_after_scan, 1097ea67eedbSSteven Whitehouse .lo_name = "databuf", 1098b3b94faaSDavid Teigland }; 1099b3b94faaSDavid Teigland 1100b09e593dSSteven Whitehouse const struct gfs2_log_operations *gfs2_log_ops[] = { 1101b3b94faaSDavid Teigland &gfs2_databuf_lops, 110216615be1SSteven Whitehouse &gfs2_buf_lops, 110316615be1SSteven Whitehouse &gfs2_revoke_lops, 1104ea67eedbSSteven Whitehouse NULL, 1105b3b94faaSDavid Teigland }; 1106b3b94faaSDavid Teigland 1107