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 799e514605SAndreas Gruenbacher rgrp_lock_local(rgd); 805a7c6690SFabian Frederick if (bi->bi_clone == NULL) 819e514605SAndreas Gruenbacher goto out; 827c9ca621SBob Peterson if (sdp->sd_args.ar_discard) 8366fc061bSSteven Whitehouse gfs2_rgrp_send_discards(sdp, rgd->rd_data0, bd->bd_bh, bi, 1, NULL); 847c9ca621SBob Peterson memcpy(bi->bi_clone + bi->bi_offset, 85281b4952SAndreas Gruenbacher bd->bd_bh->b_data + bi->bi_offset, bi->bi_bytes); 867c9ca621SBob Peterson clear_bit(GBF_FULL, &bi->bi_flags); 877c9ca621SBob Peterson rgd->rd_free_clone = rgd->rd_free; 88725d0e9dSAndreas Gruenbacher BUG_ON(rgd->rd_free_clone < rgd->rd_reserved); 895ea5050cSBob Peterson rgd->rd_extfail_pt = rgd->rd_free; 909e514605SAndreas Gruenbacher 919e514605SAndreas Gruenbacher out: 929e514605SAndreas Gruenbacher rgrp_unlock_local(rgd); 937c9ca621SBob Peterson } 947c9ca621SBob Peterson 959b9107a5SSteven Whitehouse /** 969b9107a5SSteven Whitehouse * gfs2_unpin - Unpin a buffer 979b9107a5SSteven Whitehouse * @sdp: the filesystem the buffer belongs to 989b9107a5SSteven Whitehouse * @bh: The buffer to unpin 99c551f66cSLee Jones * @tr: The system transaction being flushed 1009b9107a5SSteven Whitehouse */ 1019b9107a5SSteven Whitehouse 1029b9107a5SSteven Whitehouse static void gfs2_unpin(struct gfs2_sbd *sdp, struct buffer_head *bh, 10316ca9412SBenjamin Marzinski struct gfs2_trans *tr) 1049b9107a5SSteven Whitehouse { 1059b9107a5SSteven Whitehouse struct gfs2_bufdata *bd = bh->b_private; 1069b9107a5SSteven Whitehouse 10729687a2aSSteven Whitehouse BUG_ON(!buffer_uptodate(bh)); 10829687a2aSSteven Whitehouse BUG_ON(!buffer_pinned(bh)); 1099b9107a5SSteven Whitehouse 1109b9107a5SSteven Whitehouse lock_buffer(bh); 1119b9107a5SSteven Whitehouse mark_buffer_dirty(bh); 1129b9107a5SSteven Whitehouse clear_buffer_pinned(bh); 1139b9107a5SSteven Whitehouse 1147c9ca621SBob Peterson if (buffer_is_rgrp(bd)) 1157c9ca621SBob Peterson maybe_release_space(bd); 1167c9ca621SBob Peterson 117d6a079e8SDave Chinner spin_lock(&sdp->sd_ail_lock); 11816ca9412SBenjamin Marzinski if (bd->bd_tr) { 1199b9107a5SSteven Whitehouse list_del(&bd->bd_ail_st_list); 1209b9107a5SSteven Whitehouse brelse(bh); 1219b9107a5SSteven Whitehouse } else { 1229b9107a5SSteven Whitehouse struct gfs2_glock *gl = bd->bd_gl; 1239b9107a5SSteven Whitehouse list_add(&bd->bd_ail_gl_list, &gl->gl_ail_list); 1249b9107a5SSteven Whitehouse atomic_inc(&gl->gl_ail_count); 1259b9107a5SSteven Whitehouse } 12616ca9412SBenjamin Marzinski bd->bd_tr = tr; 12716ca9412SBenjamin Marzinski list_add(&bd->bd_ail_st_list, &tr->tr_ail1_list); 128d6a079e8SDave Chinner spin_unlock(&sdp->sd_ail_lock); 129d6a079e8SDave Chinner 13029687a2aSSteven Whitehouse clear_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags); 13163997775SSteven Whitehouse trace_gfs2_pin(bd, 0); 1329b9107a5SSteven Whitehouse unlock_buffer(bh); 1335e687eacSBenjamin Marzinski atomic_dec(&sdp->sd_log_pinned); 1349b9107a5SSteven Whitehouse } 1359b9107a5SSteven Whitehouse 13619ebc050SAndreas Gruenbacher void gfs2_log_incr_head(struct gfs2_sbd *sdp) 13716615be1SSteven Whitehouse { 138e8c92ed7SSteven Whitehouse BUG_ON((sdp->sd_log_flush_head == sdp->sd_log_tail) && 139e8c92ed7SSteven Whitehouse (sdp->sd_log_flush_head != sdp->sd_log_head)); 140e8c92ed7SSteven Whitehouse 141722f6f62SBob Peterson if (++sdp->sd_log_flush_head == sdp->sd_jdesc->jd_blocks) 142e8c92ed7SSteven Whitehouse sdp->sd_log_flush_head = 0; 14316615be1SSteven Whitehouse } 14416615be1SSteven Whitehouse 14519ebc050SAndreas Gruenbacher u64 gfs2_log_bmap(struct gfs2_jdesc *jd, unsigned int lblock) 14616615be1SSteven Whitehouse { 147e8c92ed7SSteven Whitehouse struct gfs2_journal_extent *je; 14816615be1SSteven Whitehouse 14919ebc050SAndreas Gruenbacher list_for_each_entry(je, &jd->extent_list, list) { 15019ebc050SAndreas Gruenbacher if (lblock >= je->lblock && lblock < je->lblock + je->blocks) 15119ebc050SAndreas Gruenbacher return je->dblock + lblock - je->lblock; 152e8c92ed7SSteven Whitehouse } 15347ac5537SSteven Whitehouse 154e8c92ed7SSteven Whitehouse return -1; 15547ac5537SSteven Whitehouse } 15647ac5537SSteven Whitehouse 15747ac5537SSteven Whitehouse /** 158e8c92ed7SSteven Whitehouse * gfs2_end_log_write_bh - end log write of pagecache data with buffers 159e8c92ed7SSteven Whitehouse * @sdp: The superblock 160e8c92ed7SSteven Whitehouse * @bvec: The bio_vec 161e8c92ed7SSteven Whitehouse * @error: The i/o status 162e8c92ed7SSteven Whitehouse * 1634519eaadSBob Peterson * This finds the relevant buffers and unlocks them and sets the 164e8c92ed7SSteven Whitehouse * error flag according to the status of the i/o request. This is 165e8c92ed7SSteven Whitehouse * used when the log is writing data which has an in-place version 166e8c92ed7SSteven Whitehouse * that is pinned in the pagecache. 167e8c92ed7SSteven Whitehouse */ 168e8c92ed7SSteven Whitehouse 1696dc4f100SMing Lei static void gfs2_end_log_write_bh(struct gfs2_sbd *sdp, 1706dc4f100SMing Lei struct bio_vec *bvec, 1714e4cbee9SChristoph Hellwig blk_status_t error) 172e8c92ed7SSteven Whitehouse { 173e8c92ed7SSteven Whitehouse struct buffer_head *bh, *next; 174e8c92ed7SSteven Whitehouse struct page *page = bvec->bv_page; 175e8c92ed7SSteven Whitehouse unsigned size; 176e8c92ed7SSteven Whitehouse 177e8c92ed7SSteven Whitehouse bh = page_buffers(page); 178e8c92ed7SSteven Whitehouse size = bvec->bv_len; 179e8c92ed7SSteven Whitehouse while (bh_offset(bh) < bvec->bv_offset) 180e8c92ed7SSteven Whitehouse bh = bh->b_this_page; 181e8c92ed7SSteven Whitehouse do { 182e8c92ed7SSteven Whitehouse if (error) 18387354e5dSJeff Layton mark_buffer_write_io_error(bh); 184e8c92ed7SSteven Whitehouse unlock_buffer(bh); 185e8c92ed7SSteven Whitehouse next = bh->b_this_page; 186e8c92ed7SSteven Whitehouse size -= bh->b_size; 187e8c92ed7SSteven Whitehouse brelse(bh); 188e8c92ed7SSteven Whitehouse bh = next; 189e8c92ed7SSteven Whitehouse } while(bh && size); 190e8c92ed7SSteven Whitehouse } 191e8c92ed7SSteven Whitehouse 192e8c92ed7SSteven Whitehouse /** 193e8c92ed7SSteven Whitehouse * gfs2_end_log_write - end of i/o to the log 194e8c92ed7SSteven Whitehouse * @bio: The bio 195e8c92ed7SSteven Whitehouse * 196e8c92ed7SSteven Whitehouse * Each bio_vec contains either data from the pagecache or data 197e8c92ed7SSteven Whitehouse * relating to the log itself. Here we iterate over the bio_vec 198e8c92ed7SSteven Whitehouse * array, processing both kinds of data. 19947ac5537SSteven Whitehouse * 20047ac5537SSteven Whitehouse */ 20147ac5537SSteven Whitehouse 2024246a0b6SChristoph Hellwig static void gfs2_end_log_write(struct bio *bio) 20347ac5537SSteven Whitehouse { 204e8c92ed7SSteven Whitehouse struct gfs2_sbd *sdp = bio->bi_private; 205e8c92ed7SSteven Whitehouse struct bio_vec *bvec; 206e8c92ed7SSteven Whitehouse struct page *page; 2076dc4f100SMing Lei struct bvec_iter_all iter_all; 20847ac5537SSteven Whitehouse 209942b0cddSBob Peterson if (bio->bi_status) { 210f34a6135SBob Peterson if (!cmpxchg(&sdp->sd_log_error, 0, (int)bio->bi_status)) 211942b0cddSBob Peterson fs_err(sdp, "Error %d writing to journal, jid=%u\n", 212942b0cddSBob Peterson bio->bi_status, sdp->sd_jdesc->jd_jid); 213f05b86dbSBob Peterson gfs2_withdraw_delayed(sdp); 214f05b86dbSBob Peterson /* prevent more writes to the journal */ 215f05b86dbSBob Peterson clear_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags); 216942b0cddSBob Peterson wake_up(&sdp->sd_logd_waitq); 217942b0cddSBob Peterson } 218e8c92ed7SSteven Whitehouse 2192b070cfeSChristoph Hellwig bio_for_each_segment_all(bvec, bio, iter_all) { 220e8c92ed7SSteven Whitehouse page = bvec->bv_page; 221e8c92ed7SSteven Whitehouse if (page_has_buffers(page)) 2224e4cbee9SChristoph Hellwig gfs2_end_log_write_bh(sdp, bvec, bio->bi_status); 223e8c92ed7SSteven Whitehouse else 224e8c92ed7SSteven Whitehouse mempool_free(page, gfs2_page_pool); 225e8c92ed7SSteven Whitehouse } 226e8c92ed7SSteven Whitehouse 227e8c92ed7SSteven Whitehouse bio_put(bio); 22847ac5537SSteven Whitehouse if (atomic_dec_and_test(&sdp->sd_log_in_flight)) 22947ac5537SSteven Whitehouse wake_up(&sdp->sd_log_flush_wait); 23047ac5537SSteven Whitehouse } 23147ac5537SSteven Whitehouse 23247ac5537SSteven Whitehouse /** 2335b846095SAbhi Das * gfs2_log_submit_bio - Submit any pending log bio 2345b846095SAbhi Das * @biop: Address of the bio pointer 235f4686c26SAbhi Das * @opf: REQ_OP | op_flags 236e8c92ed7SSteven Whitehouse * 237e8c92ed7SSteven Whitehouse * Submit any pending part-built or full bio to the block device. If 238e8c92ed7SSteven Whitehouse * there is no pending bio, then this is a no-op. 239e8c92ed7SSteven Whitehouse */ 240e8c92ed7SSteven Whitehouse 241f4686c26SAbhi Das void gfs2_log_submit_bio(struct bio **biop, int opf) 242e8c92ed7SSteven Whitehouse { 2435b846095SAbhi Das struct bio *bio = *biop; 2445b846095SAbhi Das if (bio) { 2455b846095SAbhi Das struct gfs2_sbd *sdp = bio->bi_private; 246e8c92ed7SSteven Whitehouse atomic_inc(&sdp->sd_log_in_flight); 247f4686c26SAbhi Das bio->bi_opf = opf; 2485b846095SAbhi Das submit_bio(bio); 2495b846095SAbhi Das *biop = NULL; 250e8c92ed7SSteven Whitehouse } 251e8c92ed7SSteven Whitehouse } 252e8c92ed7SSteven Whitehouse 253e8c92ed7SSteven Whitehouse /** 2545b846095SAbhi Das * gfs2_log_alloc_bio - Allocate a bio 255e8c92ed7SSteven Whitehouse * @sdp: The super block 2565b846095SAbhi Das * @blkno: The device block number we want to write to 2575b846095SAbhi Das * @end_io: The bi_end_io callback 258e8c92ed7SSteven Whitehouse * 2595b846095SAbhi Das * Allocate a new bio, initialize it with the given parameters and return it. 260e8c92ed7SSteven Whitehouse * 2615b846095SAbhi Das * Returns: The newly allocated bio 262e8c92ed7SSteven Whitehouse */ 263e8c92ed7SSteven Whitehouse 2645b846095SAbhi Das static struct bio *gfs2_log_alloc_bio(struct gfs2_sbd *sdp, u64 blkno, 2655b846095SAbhi Das bio_end_io_t *end_io) 266e8c92ed7SSteven Whitehouse { 267e8c92ed7SSteven Whitehouse struct super_block *sb = sdp->sd_vfs; 268a8affc03SChristoph Hellwig struct bio *bio = bio_alloc(GFP_NOIO, BIO_MAX_VECS); 269e8c92ed7SSteven Whitehouse 270aa83da7fSAndreas Gruenbacher bio->bi_iter.bi_sector = blkno << sdp->sd_fsb2bb_shift; 27174d46992SChristoph Hellwig bio_set_dev(bio, sb->s_bdev); 2725b846095SAbhi Das bio->bi_end_io = end_io; 273e8c92ed7SSteven Whitehouse bio->bi_private = sdp; 274e8c92ed7SSteven Whitehouse 275e8c92ed7SSteven Whitehouse return bio; 276e8c92ed7SSteven Whitehouse } 277e8c92ed7SSteven Whitehouse 278e8c92ed7SSteven Whitehouse /** 279e8c92ed7SSteven Whitehouse * gfs2_log_get_bio - Get cached log bio, or allocate a new one 280e8c92ed7SSteven Whitehouse * @sdp: The super block 281e8c92ed7SSteven Whitehouse * @blkno: The device block number we want to write to 282c551f66cSLee Jones * @biop: The bio to get or allocate 2835b846095SAbhi Das * @op: REQ_OP 2845b846095SAbhi Das * @end_io: The bi_end_io callback 2855b846095SAbhi Das * @flush: Always flush the current bio and allocate a new one? 286e8c92ed7SSteven Whitehouse * 287e8c92ed7SSteven Whitehouse * If there is a cached bio, then if the next block number is sequential 288e8c92ed7SSteven Whitehouse * with the previous one, return it, otherwise flush the bio to the 2895b846095SAbhi Das * device. If there is no cached bio, or we just flushed it, then 290e8c92ed7SSteven Whitehouse * allocate a new one. 291e8c92ed7SSteven Whitehouse * 292e8c92ed7SSteven Whitehouse * Returns: The bio to use for log writes 293e8c92ed7SSteven Whitehouse */ 294e8c92ed7SSteven Whitehouse 2955b846095SAbhi Das static struct bio *gfs2_log_get_bio(struct gfs2_sbd *sdp, u64 blkno, 2965b846095SAbhi Das struct bio **biop, int op, 2975b846095SAbhi Das bio_end_io_t *end_io, bool flush) 298e8c92ed7SSteven Whitehouse { 2995b846095SAbhi Das struct bio *bio = *biop; 300e8c92ed7SSteven Whitehouse 301e8c92ed7SSteven Whitehouse if (bio) { 3025b846095SAbhi Das u64 nblk; 3035b846095SAbhi Das 304f73a1c7dSKent Overstreet nblk = bio_end_sector(bio); 305e8c92ed7SSteven Whitehouse nblk >>= sdp->sd_fsb2bb_shift; 3065b846095SAbhi Das if (blkno == nblk && !flush) 307e8c92ed7SSteven Whitehouse return bio; 308f4686c26SAbhi Das gfs2_log_submit_bio(biop, op); 309e8c92ed7SSteven Whitehouse } 310e8c92ed7SSteven Whitehouse 3115b846095SAbhi Das *biop = gfs2_log_alloc_bio(sdp, blkno, end_io); 3125b846095SAbhi Das return *biop; 313e8c92ed7SSteven Whitehouse } 314e8c92ed7SSteven Whitehouse 315e8c92ed7SSteven Whitehouse /** 316e8c92ed7SSteven Whitehouse * gfs2_log_write - write to log 31747ac5537SSteven Whitehouse * @sdp: the filesystem 318c551f66cSLee Jones * @jd: The journal descriptor 319e8c92ed7SSteven Whitehouse * @page: the page to write 320e8c92ed7SSteven Whitehouse * @size: the size of the data to write 321e8c92ed7SSteven Whitehouse * @offset: the offset within the page 322c1696fb8SBob Peterson * @blkno: block number of the log entry 32347ac5537SSteven Whitehouse * 324e8c92ed7SSteven Whitehouse * Try and add the page segment to the current bio. If that fails, 325e8c92ed7SSteven Whitehouse * submit the current bio to the device and create a new one, and 326e8c92ed7SSteven Whitehouse * then add the page segment to that. 32747ac5537SSteven Whitehouse */ 32847ac5537SSteven Whitehouse 32982218943SBob Peterson void gfs2_log_write(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd, 33082218943SBob Peterson struct page *page, unsigned size, unsigned offset, 33182218943SBob Peterson u64 blkno) 33247ac5537SSteven Whitehouse { 333e8c92ed7SSteven Whitehouse struct bio *bio; 334e8c92ed7SSteven Whitehouse int ret; 33547ac5537SSteven Whitehouse 33682218943SBob Peterson bio = gfs2_log_get_bio(sdp, blkno, &jd->jd_log_bio, REQ_OP_WRITE, 3375b846095SAbhi Das gfs2_end_log_write, false); 338e8c92ed7SSteven Whitehouse ret = bio_add_page(bio, page, size, offset); 339e8c92ed7SSteven Whitehouse if (ret == 0) { 34082218943SBob Peterson bio = gfs2_log_get_bio(sdp, blkno, &jd->jd_log_bio, 3415b846095SAbhi Das REQ_OP_WRITE, gfs2_end_log_write, true); 342e8c92ed7SSteven Whitehouse ret = bio_add_page(bio, page, size, offset); 343e8c92ed7SSteven Whitehouse WARN_ON(ret == 0); 344e8c92ed7SSteven Whitehouse } 34547ac5537SSteven Whitehouse } 34616615be1SSteven Whitehouse 347e8c92ed7SSteven Whitehouse /** 348e8c92ed7SSteven Whitehouse * gfs2_log_write_bh - write a buffer's content to the log 349e8c92ed7SSteven Whitehouse * @sdp: The super block 350e8c92ed7SSteven Whitehouse * @bh: The buffer pointing to the in-place location 351e8c92ed7SSteven Whitehouse * 352e8c92ed7SSteven Whitehouse * This writes the content of the buffer to the next available location 353e8c92ed7SSteven Whitehouse * in the log. The buffer will be unlocked once the i/o to the log has 354e8c92ed7SSteven Whitehouse * completed. 355e8c92ed7SSteven Whitehouse */ 356e8c92ed7SSteven Whitehouse 357e8c92ed7SSteven Whitehouse static void gfs2_log_write_bh(struct gfs2_sbd *sdp, struct buffer_head *bh) 35816615be1SSteven Whitehouse { 35919ebc050SAndreas Gruenbacher u64 dblock; 36019ebc050SAndreas Gruenbacher 36119ebc050SAndreas Gruenbacher dblock = gfs2_log_bmap(sdp->sd_jdesc, sdp->sd_log_flush_head); 36219ebc050SAndreas Gruenbacher gfs2_log_incr_head(sdp); 36382218943SBob Peterson gfs2_log_write(sdp, sdp->sd_jdesc, bh->b_page, bh->b_size, 36482218943SBob Peterson bh_offset(bh), dblock); 365e8c92ed7SSteven Whitehouse } 366e8c92ed7SSteven Whitehouse 367e8c92ed7SSteven Whitehouse /** 368e8c92ed7SSteven Whitehouse * gfs2_log_write_page - write one block stored in a page, into the log 369e8c92ed7SSteven Whitehouse * @sdp: The superblock 370e8c92ed7SSteven Whitehouse * @page: The struct page 371e8c92ed7SSteven Whitehouse * 372e8c92ed7SSteven Whitehouse * This writes the first block-sized part of the page into the log. Note 373e8c92ed7SSteven Whitehouse * that the page must have been allocated from the gfs2_page_pool mempool 374e8c92ed7SSteven Whitehouse * and that after this has been called, ownership has been transferred and 375e8c92ed7SSteven Whitehouse * the page may be freed at any time. 376e8c92ed7SSteven Whitehouse */ 377e8c92ed7SSteven Whitehouse 3782a6fe26cSBob Peterson static void gfs2_log_write_page(struct gfs2_sbd *sdp, struct page *page) 379e8c92ed7SSteven Whitehouse { 380e8c92ed7SSteven Whitehouse struct super_block *sb = sdp->sd_vfs; 38119ebc050SAndreas Gruenbacher u64 dblock; 38219ebc050SAndreas Gruenbacher 38319ebc050SAndreas Gruenbacher dblock = gfs2_log_bmap(sdp->sd_jdesc, sdp->sd_log_flush_head); 38419ebc050SAndreas Gruenbacher gfs2_log_incr_head(sdp); 38582218943SBob Peterson gfs2_log_write(sdp, sdp->sd_jdesc, page, sb->s_blocksize, 0, dblock); 386e8c92ed7SSteven Whitehouse } 387e8c92ed7SSteven Whitehouse 388f4686c26SAbhi Das /** 389f4686c26SAbhi Das * gfs2_end_log_read - end I/O callback for reads from the log 390f4686c26SAbhi Das * @bio: The bio 391f4686c26SAbhi Das * 392f4686c26SAbhi Das * Simply unlock the pages in the bio. The main thread will wait on them and 393f4686c26SAbhi Das * process them in order as necessary. 394f4686c26SAbhi Das */ 395f4686c26SAbhi Das 396f4686c26SAbhi Das static void gfs2_end_log_read(struct bio *bio) 397f4686c26SAbhi Das { 398f4686c26SAbhi Das struct page *page; 399f4686c26SAbhi Das struct bio_vec *bvec; 400f4686c26SAbhi Das struct bvec_iter_all iter_all; 401f4686c26SAbhi Das 402ef75bd71SLinus Torvalds bio_for_each_segment_all(bvec, bio, iter_all) { 403f4686c26SAbhi Das page = bvec->bv_page; 404f4686c26SAbhi Das if (bio->bi_status) { 405f4686c26SAbhi Das int err = blk_status_to_errno(bio->bi_status); 406f4686c26SAbhi Das 407f4686c26SAbhi Das SetPageError(page); 408f4686c26SAbhi Das mapping_set_error(page->mapping, err); 409f4686c26SAbhi Das } 410f4686c26SAbhi Das unlock_page(page); 411f4686c26SAbhi Das } 412f4686c26SAbhi Das 413f4686c26SAbhi Das bio_put(bio); 414f4686c26SAbhi Das } 415f4686c26SAbhi Das 416f4686c26SAbhi Das /** 417f4686c26SAbhi Das * gfs2_jhead_pg_srch - Look for the journal head in a given page. 418f4686c26SAbhi Das * @jd: The journal descriptor 419c551f66cSLee Jones * @head: The journal head to start from 420f4686c26SAbhi Das * @page: The page to look in 421f4686c26SAbhi Das * 422f4686c26SAbhi Das * Returns: 1 if found, 0 otherwise. 423f4686c26SAbhi Das */ 424f4686c26SAbhi Das 425f4686c26SAbhi Das static bool gfs2_jhead_pg_srch(struct gfs2_jdesc *jd, 426f4686c26SAbhi Das struct gfs2_log_header_host *head, 427f4686c26SAbhi Das struct page *page) 428f4686c26SAbhi Das { 429f4686c26SAbhi Das struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 4303f649ab7SKees Cook struct gfs2_log_header_host lh; 431f4686c26SAbhi Das void *kaddr = kmap_atomic(page); 432f4686c26SAbhi Das unsigned int offset; 433f4686c26SAbhi Das bool ret = false; 434f4686c26SAbhi Das 435f4686c26SAbhi Das for (offset = 0; offset < PAGE_SIZE; offset += sdp->sd_sb.sb_bsize) { 436f4686c26SAbhi Das if (!__get_log_header(sdp, kaddr + offset, 0, &lh)) { 4377582026fSAbhi Das if (lh.lh_sequence >= head->lh_sequence) 438f4686c26SAbhi Das *head = lh; 439f4686c26SAbhi Das else { 440f4686c26SAbhi Das ret = true; 441f4686c26SAbhi Das break; 442f4686c26SAbhi Das } 443f4686c26SAbhi Das } 444f4686c26SAbhi Das } 445f4686c26SAbhi Das kunmap_atomic(kaddr); 446f4686c26SAbhi Das return ret; 447f4686c26SAbhi Das } 448f4686c26SAbhi Das 449f4686c26SAbhi Das /** 450f4686c26SAbhi Das * gfs2_jhead_process_page - Search/cleanup a page 451f4686c26SAbhi Das * @jd: The journal descriptor 452f4686c26SAbhi Das * @index: Index of the page to look into 453c551f66cSLee Jones * @head: The journal head to start from 454f4686c26SAbhi Das * @done: If set, perform only cleanup, else search and set if found. 455f4686c26SAbhi Das * 456f4686c26SAbhi Das * Find the page with 'index' in the journal's mapping. Search the page for 457f4686c26SAbhi Das * the journal head if requested (cleanup == false). Release refs on the 458f4686c26SAbhi Das * page so the page cache can reclaim it (put_page() twice). We grabbed a 459f4686c26SAbhi Das * reference on this page two times, first when we did a find_or_create_page() 460f4686c26SAbhi Das * to obtain the page to add it to the bio and second when we do a 461f4686c26SAbhi Das * find_get_page() here to get the page to wait on while I/O on it is being 462f4686c26SAbhi Das * completed. 463f4686c26SAbhi Das * This function is also used to free up a page we might've grabbed but not 464f4686c26SAbhi Das * used. Maybe we added it to a bio, but not submitted it for I/O. Or we 465f4686c26SAbhi Das * submitted the I/O, but we already found the jhead so we only need to drop 466f4686c26SAbhi Das * our references to the page. 467f4686c26SAbhi Das */ 468f4686c26SAbhi Das 469f4686c26SAbhi Das static void gfs2_jhead_process_page(struct gfs2_jdesc *jd, unsigned long index, 470f4686c26SAbhi Das struct gfs2_log_header_host *head, 471f4686c26SAbhi Das bool *done) 472f4686c26SAbhi Das { 473f4686c26SAbhi Das struct page *page; 474f4686c26SAbhi Das 475f4686c26SAbhi Das page = find_get_page(jd->jd_inode->i_mapping, index); 476f4686c26SAbhi Das wait_on_page_locked(page); 477f4686c26SAbhi Das 478f4686c26SAbhi Das if (PageError(page)) 479f4686c26SAbhi Das *done = true; 480f4686c26SAbhi Das 481f4686c26SAbhi Das if (!*done) 482f4686c26SAbhi Das *done = gfs2_jhead_pg_srch(jd, head, page); 483f4686c26SAbhi Das 484f4686c26SAbhi Das put_page(page); /* Once for find_get_page */ 485f4686c26SAbhi Das put_page(page); /* Once more for find_or_create_page */ 486f4686c26SAbhi Das } 487f4686c26SAbhi Das 488eed0f953SAndreas Gruenbacher static struct bio *gfs2_chain_bio(struct bio *prev, unsigned int nr_iovecs) 489eed0f953SAndreas Gruenbacher { 490eed0f953SAndreas Gruenbacher struct bio *new; 491eed0f953SAndreas Gruenbacher 492eed0f953SAndreas Gruenbacher new = bio_alloc(GFP_NOIO, nr_iovecs); 493eed0f953SAndreas Gruenbacher bio_copy_dev(new, prev); 494eed0f953SAndreas Gruenbacher new->bi_iter.bi_sector = bio_end_sector(prev); 495eed0f953SAndreas Gruenbacher new->bi_opf = prev->bi_opf; 496eed0f953SAndreas Gruenbacher new->bi_write_hint = prev->bi_write_hint; 497eed0f953SAndreas Gruenbacher bio_chain(new, prev); 498eed0f953SAndreas Gruenbacher submit_bio(prev); 499eed0f953SAndreas Gruenbacher return new; 500eed0f953SAndreas Gruenbacher } 501eed0f953SAndreas Gruenbacher 502f4686c26SAbhi Das /** 503f4686c26SAbhi Das * gfs2_find_jhead - find the head of a log 504f4686c26SAbhi Das * @jd: The journal descriptor 505f4686c26SAbhi Das * @head: The log descriptor for the head of the log is returned here 506c551f66cSLee Jones * @keep_cache: If set inode pages will not be truncated 507f4686c26SAbhi Das * 508f4686c26SAbhi Das * Do a search of a journal by reading it in large chunks using bios and find 509f4686c26SAbhi Das * the valid log entry with the highest sequence number. (i.e. the log head) 510f4686c26SAbhi Das * 511f4686c26SAbhi Das * Returns: 0 on success, errno otherwise 512f4686c26SAbhi Das */ 513f4686c26SAbhi Das int gfs2_find_jhead(struct gfs2_jdesc *jd, struct gfs2_log_header_host *head, 514f4686c26SAbhi Das bool keep_cache) 515f4686c26SAbhi Das { 516f4686c26SAbhi Das struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 517f4686c26SAbhi Das struct address_space *mapping = jd->jd_inode->i_mapping; 518f4686c26SAbhi Das unsigned int block = 0, blocks_submitted = 0, blocks_read = 0; 519eed0f953SAndreas Gruenbacher unsigned int bsize = sdp->sd_sb.sb_bsize, off; 520f4686c26SAbhi Das unsigned int bsize_shift = sdp->sd_sb.sb_bsize_shift; 521f4686c26SAbhi Das unsigned int shift = PAGE_SHIFT - bsize_shift; 52220be493bSAndreas Gruenbacher unsigned int max_blocks = 2 * 1024 * 1024 >> bsize_shift; 523f4686c26SAbhi Das struct gfs2_journal_extent *je; 524f4686c26SAbhi Das int sz, ret = 0; 525f4686c26SAbhi Das struct bio *bio = NULL; 526f4686c26SAbhi Das struct page *page = NULL; 52720be493bSAndreas Gruenbacher bool done = false; 528f4686c26SAbhi Das errseq_t since; 529f4686c26SAbhi Das 530f4686c26SAbhi Das memset(head, 0, sizeof(*head)); 531f4686c26SAbhi Das if (list_empty(&jd->extent_list)) 532f4686c26SAbhi Das gfs2_map_journal_extents(sdp, jd); 533f4686c26SAbhi Das 534f4686c26SAbhi Das since = filemap_sample_wb_err(mapping); 535f4686c26SAbhi Das list_for_each_entry(je, &jd->extent_list, list) { 536eed0f953SAndreas Gruenbacher u64 dblock = je->dblock; 537f4686c26SAbhi Das 538eed0f953SAndreas Gruenbacher for (; block < je->lblock + je->blocks; block++, dblock++) { 539f4686c26SAbhi Das if (!page) { 540f4686c26SAbhi Das page = find_or_create_page(mapping, 541f4686c26SAbhi Das block >> shift, GFP_NOFS); 542f4686c26SAbhi Das if (!page) { 543f4686c26SAbhi Das ret = -ENOMEM; 544f4686c26SAbhi Das done = true; 545f4686c26SAbhi Das goto out; 546f4686c26SAbhi Das } 547eed0f953SAndreas Gruenbacher off = 0; 548eed0f953SAndreas Gruenbacher } 549eed0f953SAndreas Gruenbacher 55020be493bSAndreas Gruenbacher if (bio && (off || block < blocks_submitted + max_blocks)) { 551aa83da7fSAndreas Gruenbacher sector_t sector = dblock << sdp->sd_fsb2bb_shift; 552aa83da7fSAndreas Gruenbacher 553aa83da7fSAndreas Gruenbacher if (bio_end_sector(bio) == sector) { 554eed0f953SAndreas Gruenbacher sz = bio_add_page(bio, page, bsize, off); 555eed0f953SAndreas Gruenbacher if (sz == bsize) 556eed0f953SAndreas Gruenbacher goto block_added; 557aa83da7fSAndreas Gruenbacher } 558eed0f953SAndreas Gruenbacher if (off) { 559eed0f953SAndreas Gruenbacher unsigned int blocks = 560eed0f953SAndreas Gruenbacher (PAGE_SIZE - off) >> bsize_shift; 561eed0f953SAndreas Gruenbacher 562eed0f953SAndreas Gruenbacher bio = gfs2_chain_bio(bio, blocks); 563eed0f953SAndreas Gruenbacher goto add_block_to_new_bio; 564eed0f953SAndreas Gruenbacher } 565f4686c26SAbhi Das } 566f4686c26SAbhi Das 567f4686c26SAbhi Das if (bio) { 56820be493bSAndreas Gruenbacher blocks_submitted = block; 569f4686c26SAbhi Das submit_bio(bio); 570f4686c26SAbhi Das } 571f4686c26SAbhi Das 572f4686c26SAbhi Das bio = gfs2_log_alloc_bio(sdp, dblock, gfs2_end_log_read); 573f4686c26SAbhi Das bio->bi_opf = REQ_OP_READ; 574eed0f953SAndreas Gruenbacher add_block_to_new_bio: 575eed0f953SAndreas Gruenbacher sz = bio_add_page(bio, page, bsize, off); 576eed0f953SAndreas Gruenbacher BUG_ON(sz != bsize); 577eed0f953SAndreas Gruenbacher block_added: 578eed0f953SAndreas Gruenbacher off += bsize; 579eed0f953SAndreas Gruenbacher if (off == PAGE_SIZE) 580f4686c26SAbhi Das page = NULL; 58120be493bSAndreas Gruenbacher if (blocks_submitted <= blocks_read + max_blocks) { 582f4686c26SAbhi Das /* Keep at least one bio in flight */ 583f4686c26SAbhi Das continue; 584f4686c26SAbhi Das } 585f4686c26SAbhi Das 586f4686c26SAbhi Das gfs2_jhead_process_page(jd, blocks_read >> shift, head, &done); 587f4686c26SAbhi Das blocks_read += PAGE_SIZE >> bsize_shift; 588f4686c26SAbhi Das if (done) 589f4686c26SAbhi Das goto out; /* found */ 590f4686c26SAbhi Das } 591f4686c26SAbhi Das } 592f4686c26SAbhi Das 593f4686c26SAbhi Das out: 594f4686c26SAbhi Das if (bio) 595f4686c26SAbhi Das submit_bio(bio); 596f4686c26SAbhi Das while (blocks_read < block) { 597f4686c26SAbhi Das gfs2_jhead_process_page(jd, blocks_read >> shift, head, &done); 598f4686c26SAbhi Das blocks_read += PAGE_SIZE >> bsize_shift; 599f4686c26SAbhi Das } 600f4686c26SAbhi Das 601f4686c26SAbhi Das if (!ret) 602f4686c26SAbhi Das ret = filemap_check_wb_err(mapping, since); 603f4686c26SAbhi Das 604f4686c26SAbhi Das if (!keep_cache) 605f4686c26SAbhi Das truncate_inode_pages(mapping, 0); 606f4686c26SAbhi Das 607f4686c26SAbhi Das return ret; 608f4686c26SAbhi Das } 609f4686c26SAbhi Das 610dad30e90SSteven Whitehouse static struct page *gfs2_get_log_desc(struct gfs2_sbd *sdp, u32 ld_type, 611dad30e90SSteven Whitehouse u32 ld_length, u32 ld_data1) 612e8c92ed7SSteven Whitehouse { 613144a4c2fSSteven Whitehouse struct page *page = mempool_alloc(gfs2_page_pool, GFP_NOIO); 614e8c92ed7SSteven Whitehouse struct gfs2_log_descriptor *ld = page_address(page); 615e8c92ed7SSteven Whitehouse clear_page(ld); 61616615be1SSteven Whitehouse ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC); 61716615be1SSteven Whitehouse ld->ld_header.mh_type = cpu_to_be32(GFS2_METATYPE_LD); 61816615be1SSteven Whitehouse ld->ld_header.mh_format = cpu_to_be32(GFS2_FORMAT_LD); 61916615be1SSteven Whitehouse ld->ld_type = cpu_to_be32(ld_type); 620dad30e90SSteven Whitehouse ld->ld_length = cpu_to_be32(ld_length); 621dad30e90SSteven Whitehouse ld->ld_data1 = cpu_to_be32(ld_data1); 62216615be1SSteven Whitehouse ld->ld_data2 = 0; 623e8c92ed7SSteven Whitehouse return page; 62416615be1SSteven Whitehouse } 62516615be1SSteven Whitehouse 626dad30e90SSteven Whitehouse static void gfs2_check_magic(struct buffer_head *bh) 627dad30e90SSteven Whitehouse { 628dad30e90SSteven Whitehouse void *kaddr; 629dad30e90SSteven Whitehouse __be32 *ptr; 630dad30e90SSteven Whitehouse 631dad30e90SSteven Whitehouse clear_buffer_escaped(bh); 632dad30e90SSteven Whitehouse kaddr = kmap_atomic(bh->b_page); 633dad30e90SSteven Whitehouse ptr = kaddr + bh_offset(bh); 634dad30e90SSteven Whitehouse if (*ptr == cpu_to_be32(GFS2_MAGIC)) 635dad30e90SSteven Whitehouse set_buffer_escaped(bh); 636dad30e90SSteven Whitehouse kunmap_atomic(kaddr); 637dad30e90SSteven Whitehouse } 638dad30e90SSteven Whitehouse 6394f0f586bSSami Tolvanen static int blocknr_cmp(void *priv, const struct list_head *a, 6404f0f586bSSami Tolvanen const struct list_head *b) 6417f63257dSBenjamin Marzinski { 6427f63257dSBenjamin Marzinski struct gfs2_bufdata *bda, *bdb; 6437f63257dSBenjamin Marzinski 6447f63257dSBenjamin Marzinski bda = list_entry(a, struct gfs2_bufdata, bd_list); 6457f63257dSBenjamin Marzinski bdb = list_entry(b, struct gfs2_bufdata, bd_list); 6467f63257dSBenjamin Marzinski 6477f63257dSBenjamin Marzinski if (bda->bd_bh->b_blocknr < bdb->bd_bh->b_blocknr) 6487f63257dSBenjamin Marzinski return -1; 6497f63257dSBenjamin Marzinski if (bda->bd_bh->b_blocknr > bdb->bd_bh->b_blocknr) 6507f63257dSBenjamin Marzinski return 1; 6517f63257dSBenjamin Marzinski return 0; 6527f63257dSBenjamin Marzinski } 6537f63257dSBenjamin Marzinski 654dad30e90SSteven Whitehouse static void gfs2_before_commit(struct gfs2_sbd *sdp, unsigned int limit, 655dad30e90SSteven Whitehouse unsigned int total, struct list_head *blist, 656dad30e90SSteven Whitehouse bool is_databuf) 657b3b94faaSDavid Teigland { 658b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld; 659b3b94faaSDavid Teigland struct gfs2_bufdata *bd1 = NULL, *bd2; 660e8c92ed7SSteven Whitehouse struct page *page; 661b3b94faaSDavid Teigland unsigned int num; 662b3b94faaSDavid Teigland unsigned n; 663b3b94faaSDavid Teigland __be64 *ptr; 664b3b94faaSDavid Teigland 665905d2aefSBob Peterson gfs2_log_lock(sdp); 6667f63257dSBenjamin Marzinski list_sort(NULL, blist, blocknr_cmp); 667c0752aa7SBob Peterson bd1 = bd2 = list_prepare_entry(bd1, blist, bd_list); 668b3b94faaSDavid Teigland while(total) { 669b3b94faaSDavid Teigland num = total; 670b3b94faaSDavid Teigland if (total > limit) 671b3b94faaSDavid Teigland num = limit; 672905d2aefSBob Peterson gfs2_log_unlock(sdp); 6734a586812SBob Peterson page = gfs2_get_log_desc(sdp, 6744a586812SBob Peterson is_databuf ? GFS2_LOG_DESC_JDATA : 6754a586812SBob Peterson GFS2_LOG_DESC_METADATA, num + 1, num); 676e8c92ed7SSteven Whitehouse ld = page_address(page); 677905d2aefSBob Peterson gfs2_log_lock(sdp); 678e8c92ed7SSteven Whitehouse ptr = (__be64 *)(ld + 1); 679b3b94faaSDavid Teigland 680b3b94faaSDavid Teigland n = 0; 681c0752aa7SBob Peterson list_for_each_entry_continue(bd1, blist, bd_list) { 682b3b94faaSDavid Teigland *ptr++ = cpu_to_be64(bd1->bd_bh->b_blocknr); 683dad30e90SSteven Whitehouse if (is_databuf) { 684dad30e90SSteven Whitehouse gfs2_check_magic(bd1->bd_bh); 685dad30e90SSteven Whitehouse *ptr++ = cpu_to_be64(buffer_escaped(bd1->bd_bh) ? 1 : 0); 686dad30e90SSteven Whitehouse } 687b3b94faaSDavid Teigland if (++n >= num) 688b3b94faaSDavid Teigland break; 689b3b94faaSDavid Teigland } 690b3b94faaSDavid Teigland 691905d2aefSBob Peterson gfs2_log_unlock(sdp); 692e8c92ed7SSteven Whitehouse gfs2_log_write_page(sdp, page); 693905d2aefSBob Peterson gfs2_log_lock(sdp); 694b3b94faaSDavid Teigland 695b3b94faaSDavid Teigland n = 0; 696c0752aa7SBob Peterson list_for_each_entry_continue(bd2, blist, bd_list) { 69716615be1SSteven Whitehouse get_bh(bd2->bd_bh); 698905d2aefSBob Peterson gfs2_log_unlock(sdp); 69916615be1SSteven Whitehouse lock_buffer(bd2->bd_bh); 700dad30e90SSteven Whitehouse 701dad30e90SSteven Whitehouse if (buffer_escaped(bd2->bd_bh)) { 702dad30e90SSteven Whitehouse void *kaddr; 703dad30e90SSteven Whitehouse page = mempool_alloc(gfs2_page_pool, GFP_NOIO); 704dad30e90SSteven Whitehouse ptr = page_address(page); 705dad30e90SSteven Whitehouse kaddr = kmap_atomic(bd2->bd_bh->b_page); 706dad30e90SSteven Whitehouse memcpy(ptr, kaddr + bh_offset(bd2->bd_bh), 707dad30e90SSteven Whitehouse bd2->bd_bh->b_size); 708dad30e90SSteven Whitehouse kunmap_atomic(kaddr); 709dad30e90SSteven Whitehouse *(__be32 *)ptr = 0; 710dad30e90SSteven Whitehouse clear_buffer_escaped(bd2->bd_bh); 711dad30e90SSteven Whitehouse unlock_buffer(bd2->bd_bh); 712dad30e90SSteven Whitehouse brelse(bd2->bd_bh); 713dad30e90SSteven Whitehouse gfs2_log_write_page(sdp, page); 714dad30e90SSteven Whitehouse } else { 715e8c92ed7SSteven Whitehouse gfs2_log_write_bh(sdp, bd2->bd_bh); 716dad30e90SSteven Whitehouse } 717905d2aefSBob Peterson gfs2_log_lock(sdp); 718b3b94faaSDavid Teigland if (++n >= num) 719b3b94faaSDavid Teigland break; 720b3b94faaSDavid Teigland } 721b3b94faaSDavid Teigland 722905d2aefSBob Peterson BUG_ON(total < num); 723b3b94faaSDavid Teigland total -= num; 724b3b94faaSDavid Teigland } 725905d2aefSBob Peterson gfs2_log_unlock(sdp); 726b3b94faaSDavid Teigland } 727b3b94faaSDavid Teigland 728d69a3c65SSteven Whitehouse static void buf_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 729dad30e90SSteven Whitehouse { 730dad30e90SSteven Whitehouse unsigned int limit = buf_limit(sdp); /* 503 for 4k blocks */ 731022ef4feSSteven Whitehouse unsigned int nbuf; 732d69a3c65SSteven Whitehouse if (tr == NULL) 733d69a3c65SSteven Whitehouse return; 734022ef4feSSteven Whitehouse nbuf = tr->tr_num_buf_new - tr->tr_num_buf_rm; 735022ef4feSSteven Whitehouse gfs2_before_commit(sdp, limit, nbuf, &tr->tr_buf, 0); 736dad30e90SSteven Whitehouse } 737dad30e90SSteven Whitehouse 73816ca9412SBenjamin Marzinski static void buf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 739b3b94faaSDavid Teigland { 740d69a3c65SSteven Whitehouse struct list_head *head; 741b3b94faaSDavid Teigland struct gfs2_bufdata *bd; 742b3b94faaSDavid Teigland 743d69a3c65SSteven Whitehouse if (tr == NULL) 74416ca9412SBenjamin Marzinski return; 74516ca9412SBenjamin Marzinski 746d69a3c65SSteven Whitehouse head = &tr->tr_buf; 747b3b94faaSDavid Teigland while (!list_empty(head)) { 748969183bcSAndreas Gruenbacher bd = list_first_entry(head, struct gfs2_bufdata, bd_list); 749c0752aa7SBob Peterson list_del_init(&bd->bd_list); 75016ca9412SBenjamin Marzinski gfs2_unpin(sdp, bd->bd_bh, tr); 751b3b94faaSDavid Teigland } 752b3b94faaSDavid Teigland } 753b3b94faaSDavid Teigland 754b3b94faaSDavid Teigland static void buf_lo_before_scan(struct gfs2_jdesc *jd, 75555167622SAl Viro struct gfs2_log_header_host *head, int pass) 756b3b94faaSDavid Teigland { 757b3b94faaSDavid Teigland if (pass != 0) 758b3b94faaSDavid Teigland return; 759b3b94faaSDavid Teigland 760a17d758bSBob Peterson jd->jd_found_blocks = 0; 761a17d758bSBob Peterson jd->jd_replayed_blocks = 0; 762b3b94faaSDavid Teigland } 763b3b94faaSDavid Teigland 7647c70b896SBob Peterson static int buf_lo_scan_elements(struct gfs2_jdesc *jd, u32 start, 765b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld, __be64 *ptr, 766b3b94faaSDavid Teigland int pass) 767b3b94faaSDavid Teigland { 768feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 769feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 7705c676f6dSSteven Whitehouse struct gfs2_glock *gl = ip->i_gl; 771b3b94faaSDavid Teigland unsigned int blks = be32_to_cpu(ld->ld_data1); 772b3b94faaSDavid Teigland struct buffer_head *bh_log, *bh_ip; 773cd915493SSteven Whitehouse u64 blkno; 774b3b94faaSDavid Teigland int error = 0; 775b3b94faaSDavid Teigland 776b3b94faaSDavid Teigland if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_METADATA) 777b3b94faaSDavid Teigland return 0; 778b3b94faaSDavid Teigland 779e1cb6be9SBob Peterson gfs2_replay_incr_blk(jd, &start); 780b3b94faaSDavid Teigland 781e1cb6be9SBob Peterson for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { 782b3b94faaSDavid Teigland blkno = be64_to_cpu(*ptr++); 783b3b94faaSDavid Teigland 784a17d758bSBob Peterson jd->jd_found_blocks++; 785b3b94faaSDavid Teigland 786a17d758bSBob Peterson if (gfs2_revoke_check(jd, blkno, start)) 787b3b94faaSDavid Teigland continue; 788b3b94faaSDavid Teigland 789b3b94faaSDavid Teigland error = gfs2_replay_read_block(jd, start, &bh_log); 790b3b94faaSDavid Teigland if (error) 791b3b94faaSDavid Teigland return error; 792b3b94faaSDavid Teigland 793b3b94faaSDavid Teigland bh_ip = gfs2_meta_new(gl, blkno); 794b3b94faaSDavid Teigland memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); 795b3b94faaSDavid Teigland 796b3b94faaSDavid Teigland if (gfs2_meta_check(sdp, bh_ip)) 797b3b94faaSDavid Teigland error = -EIO; 798d14e1ca3SBob Peterson else { 799d14e1ca3SBob Peterson struct gfs2_meta_header *mh = 800d14e1ca3SBob Peterson (struct gfs2_meta_header *)bh_ip->b_data; 801b3b94faaSDavid Teigland 802d14e1ca3SBob Peterson if (mh->mh_type == cpu_to_be32(GFS2_METATYPE_RG)) { 803d14e1ca3SBob Peterson struct gfs2_rgrpd *rgd; 804d14e1ca3SBob Peterson 805d14e1ca3SBob Peterson rgd = gfs2_blk2rgrpd(sdp, blkno, false); 806d14e1ca3SBob Peterson if (rgd && rgd->rd_addr == blkno && 807d14e1ca3SBob Peterson rgd->rd_bits && rgd->rd_bits->bi_bh) { 808d14e1ca3SBob Peterson fs_info(sdp, "Replaying 0x%llx but we " 809d14e1ca3SBob Peterson "already have a bh!\n", 810d14e1ca3SBob Peterson (unsigned long long)blkno); 811d14e1ca3SBob Peterson fs_info(sdp, "busy:%d, pinned:%d\n", 812d14e1ca3SBob Peterson buffer_busy(rgd->rd_bits->bi_bh) ? 1 : 0, 813d14e1ca3SBob Peterson buffer_pinned(rgd->rd_bits->bi_bh)); 8143792ce97SBob Peterson gfs2_dump_glock(NULL, rgd->rd_gl, true); 815d14e1ca3SBob Peterson } 816d14e1ca3SBob Peterson } 817d14e1ca3SBob Peterson mark_buffer_dirty(bh_ip); 818d14e1ca3SBob Peterson } 819b3b94faaSDavid Teigland brelse(bh_log); 820b3b94faaSDavid Teigland brelse(bh_ip); 821b3b94faaSDavid Teigland 822b3b94faaSDavid Teigland if (error) 823b3b94faaSDavid Teigland break; 824b3b94faaSDavid Teigland 825a17d758bSBob Peterson jd->jd_replayed_blocks++; 826b3b94faaSDavid Teigland } 827b3b94faaSDavid Teigland 828b3b94faaSDavid Teigland return error; 829b3b94faaSDavid Teigland } 830b3b94faaSDavid Teigland 831b3b94faaSDavid Teigland static void buf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 832b3b94faaSDavid Teigland { 833feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 834feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 835b3b94faaSDavid Teigland 836b3b94faaSDavid Teigland if (error) { 8374a55752aSBob Peterson gfs2_inode_metasync(ip->i_gl); 838b3b94faaSDavid Teigland return; 839b3b94faaSDavid Teigland } 840b3b94faaSDavid Teigland if (pass != 1) 841b3b94faaSDavid Teigland return; 842b3b94faaSDavid Teigland 8434a55752aSBob Peterson gfs2_inode_metasync(ip->i_gl); 844b3b94faaSDavid Teigland 845b3b94faaSDavid Teigland fs_info(sdp, "jid=%u: Replayed %u of %u blocks\n", 846a17d758bSBob Peterson jd->jd_jid, jd->jd_replayed_blocks, jd->jd_found_blocks); 847b3b94faaSDavid Teigland } 848b3b94faaSDavid Teigland 849d69a3c65SSteven Whitehouse static void revoke_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 850b3b94faaSDavid Teigland { 851b3b94faaSDavid Teigland struct gfs2_meta_header *mh; 852b3b94faaSDavid Teigland unsigned int offset; 853a5b1d3fcSAndreas Gruenbacher struct list_head *head = &sdp->sd_log_revokes; 85482e86087SSteven Whitehouse struct gfs2_bufdata *bd; 855e8c92ed7SSteven Whitehouse struct page *page; 856dad30e90SSteven Whitehouse unsigned int length; 857b3b94faaSDavid Teigland 858e7501bf8SAndreas Gruenbacher gfs2_flush_revokes(sdp); 859b3b94faaSDavid Teigland if (!sdp->sd_log_num_revoke) 860b3b94faaSDavid Teigland return; 861b3b94faaSDavid Teigland 8622e9eeaa1SBob Peterson length = gfs2_struct2blk(sdp, sdp->sd_log_num_revoke); 863dad30e90SSteven Whitehouse page = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_REVOKE, length, sdp->sd_log_num_revoke); 864b3b94faaSDavid Teigland offset = sizeof(struct gfs2_log_descriptor); 865b3b94faaSDavid Teigland 866c0752aa7SBob Peterson list_for_each_entry(bd, head, bd_list) { 867b3b94faaSDavid Teigland sdp->sd_log_num_revoke--; 868b3b94faaSDavid Teigland 869cd915493SSteven Whitehouse if (offset + sizeof(u64) > sdp->sd_sb.sb_bsize) { 870e8c92ed7SSteven Whitehouse gfs2_log_write_page(sdp, page); 871e8c92ed7SSteven Whitehouse page = mempool_alloc(gfs2_page_pool, GFP_NOIO); 872e8c92ed7SSteven Whitehouse mh = page_address(page); 873e8c92ed7SSteven Whitehouse clear_page(mh); 874b3b94faaSDavid Teigland mh->mh_magic = cpu_to_be32(GFS2_MAGIC); 875e3167dedSSteven Whitehouse mh->mh_type = cpu_to_be32(GFS2_METATYPE_LB); 876e3167dedSSteven Whitehouse mh->mh_format = cpu_to_be32(GFS2_FORMAT_LB); 877b3b94faaSDavid Teigland offset = sizeof(struct gfs2_meta_header); 878b3b94faaSDavid Teigland } 879b3b94faaSDavid Teigland 880e8c92ed7SSteven Whitehouse *(__be64 *)(page_address(page) + offset) = cpu_to_be64(bd->bd_blkno); 881cd915493SSteven Whitehouse offset += sizeof(u64); 882b3b94faaSDavid Teigland } 883b3b94faaSDavid Teigland gfs2_assert_withdraw(sdp, !sdp->sd_log_num_revoke); 884b3b94faaSDavid Teigland 885e8c92ed7SSteven Whitehouse gfs2_log_write_page(sdp, page); 886b3b94faaSDavid Teigland } 887b3b94faaSDavid Teigland 888*f5456b5dSBob Peterson void gfs2_drain_revokes(struct gfs2_sbd *sdp) 889f42ab085SSteven Whitehouse { 890a5b1d3fcSAndreas Gruenbacher struct list_head *head = &sdp->sd_log_revokes; 891638803d4SBob Peterson struct gfs2_bufdata *bd; 892638803d4SBob Peterson struct gfs2_glock *gl; 893f42ab085SSteven Whitehouse 894638803d4SBob Peterson while (!list_empty(head)) { 895969183bcSAndreas Gruenbacher bd = list_first_entry(head, struct gfs2_bufdata, bd_list); 896638803d4SBob Peterson list_del_init(&bd->bd_list); 897638803d4SBob Peterson gl = bd->bd_gl; 898fe5e7ba1SBob Peterson gfs2_glock_remove_revoke(gl); 899638803d4SBob Peterson kmem_cache_free(gfs2_bufdata_cachep, bd); 900638803d4SBob Peterson } 901f42ab085SSteven Whitehouse } 902f42ab085SSteven Whitehouse 903*f5456b5dSBob Peterson static void revoke_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 904*f5456b5dSBob Peterson { 905*f5456b5dSBob Peterson gfs2_drain_revokes(sdp); 906*f5456b5dSBob Peterson } 907*f5456b5dSBob Peterson 908b3b94faaSDavid Teigland static void revoke_lo_before_scan(struct gfs2_jdesc *jd, 90955167622SAl Viro struct gfs2_log_header_host *head, int pass) 910b3b94faaSDavid Teigland { 911b3b94faaSDavid Teigland if (pass != 0) 912b3b94faaSDavid Teigland return; 913b3b94faaSDavid Teigland 914a17d758bSBob Peterson jd->jd_found_revokes = 0; 915a17d758bSBob Peterson jd->jd_replay_tail = head->lh_tail; 916b3b94faaSDavid Teigland } 917b3b94faaSDavid Teigland 9187c70b896SBob Peterson static int revoke_lo_scan_elements(struct gfs2_jdesc *jd, u32 start, 919b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld, __be64 *ptr, 920b3b94faaSDavid Teigland int pass) 921b3b94faaSDavid Teigland { 922feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 923b3b94faaSDavid Teigland unsigned int blks = be32_to_cpu(ld->ld_length); 924b3b94faaSDavid Teigland unsigned int revokes = be32_to_cpu(ld->ld_data1); 925b3b94faaSDavid Teigland struct buffer_head *bh; 926b3b94faaSDavid Teigland unsigned int offset; 927cd915493SSteven Whitehouse u64 blkno; 928b3b94faaSDavid Teigland int first = 1; 929b3b94faaSDavid Teigland int error; 930b3b94faaSDavid Teigland 931b3b94faaSDavid Teigland if (pass != 0 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_REVOKE) 932b3b94faaSDavid Teigland return 0; 933b3b94faaSDavid Teigland 934b3b94faaSDavid Teigland offset = sizeof(struct gfs2_log_descriptor); 935b3b94faaSDavid Teigland 936e1cb6be9SBob Peterson for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { 937b3b94faaSDavid Teigland error = gfs2_replay_read_block(jd, start, &bh); 938b3b94faaSDavid Teigland if (error) 939b3b94faaSDavid Teigland return error; 940b3b94faaSDavid Teigland 941b3b94faaSDavid Teigland if (!first) 942b3b94faaSDavid Teigland gfs2_metatype_check(sdp, bh, GFS2_METATYPE_LB); 943b3b94faaSDavid Teigland 944cd915493SSteven Whitehouse while (offset + sizeof(u64) <= sdp->sd_sb.sb_bsize) { 945b3b94faaSDavid Teigland blkno = be64_to_cpu(*(__be64 *)(bh->b_data + offset)); 946b3b94faaSDavid Teigland 947a17d758bSBob Peterson error = gfs2_revoke_add(jd, blkno, start); 9483ad62e87SBob Peterson if (error < 0) { 9493ad62e87SBob Peterson brelse(bh); 950b3b94faaSDavid Teigland return error; 9513ad62e87SBob Peterson } 952b3b94faaSDavid Teigland else if (error) 953a17d758bSBob Peterson jd->jd_found_revokes++; 954b3b94faaSDavid Teigland 955b3b94faaSDavid Teigland if (!--revokes) 956b3b94faaSDavid Teigland break; 957cd915493SSteven Whitehouse offset += sizeof(u64); 958b3b94faaSDavid Teigland } 959b3b94faaSDavid Teigland 960b3b94faaSDavid Teigland brelse(bh); 961b3b94faaSDavid Teigland offset = sizeof(struct gfs2_meta_header); 962b3b94faaSDavid Teigland first = 0; 963b3b94faaSDavid Teigland } 964b3b94faaSDavid Teigland 965b3b94faaSDavid Teigland return 0; 966b3b94faaSDavid Teigland } 967b3b94faaSDavid Teigland 968b3b94faaSDavid Teigland static void revoke_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 969b3b94faaSDavid Teigland { 970feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 971b3b94faaSDavid Teigland 972b3b94faaSDavid Teigland if (error) { 973a17d758bSBob Peterson gfs2_revoke_clean(jd); 974b3b94faaSDavid Teigland return; 975b3b94faaSDavid Teigland } 976b3b94faaSDavid Teigland if (pass != 1) 977b3b94faaSDavid Teigland return; 978b3b94faaSDavid Teigland 979b3b94faaSDavid Teigland fs_info(sdp, "jid=%u: Found %u revoke tags\n", 980a17d758bSBob Peterson jd->jd_jid, jd->jd_found_revokes); 981b3b94faaSDavid Teigland 982a17d758bSBob Peterson gfs2_revoke_clean(jd); 983b3b94faaSDavid Teigland } 984b3b94faaSDavid Teigland 98518ec7d5cSSteven Whitehouse /** 98618ec7d5cSSteven Whitehouse * databuf_lo_before_commit - Scan the data buffers, writing as we go 987c551f66cSLee Jones * @sdp: The filesystem 988c551f66cSLee Jones * @tr: The system transaction being flushed 98918ec7d5cSSteven Whitehouse */ 990d7b616e2SSteven Whitehouse 991d69a3c65SSteven Whitehouse static void databuf_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 992b3b94faaSDavid Teigland { 993022ef4feSSteven Whitehouse unsigned int limit = databuf_limit(sdp); 994022ef4feSSteven Whitehouse unsigned int nbuf; 995d69a3c65SSteven Whitehouse if (tr == NULL) 996d69a3c65SSteven Whitehouse return; 997022ef4feSSteven Whitehouse nbuf = tr->tr_num_databuf_new - tr->tr_num_databuf_rm; 998022ef4feSSteven Whitehouse gfs2_before_commit(sdp, limit, nbuf, &tr->tr_databuf, 1); 999b3b94faaSDavid Teigland } 1000b3b94faaSDavid Teigland 10017c70b896SBob Peterson static int databuf_lo_scan_elements(struct gfs2_jdesc *jd, u32 start, 100218ec7d5cSSteven Whitehouse struct gfs2_log_descriptor *ld, 100318ec7d5cSSteven Whitehouse __be64 *ptr, int pass) 100418ec7d5cSSteven Whitehouse { 1005feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 10065c676f6dSSteven Whitehouse struct gfs2_glock *gl = ip->i_gl; 100718ec7d5cSSteven Whitehouse unsigned int blks = be32_to_cpu(ld->ld_data1); 100818ec7d5cSSteven Whitehouse struct buffer_head *bh_log, *bh_ip; 1009cd915493SSteven Whitehouse u64 blkno; 1010cd915493SSteven Whitehouse u64 esc; 101118ec7d5cSSteven Whitehouse int error = 0; 101218ec7d5cSSteven Whitehouse 101318ec7d5cSSteven Whitehouse if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_JDATA) 101418ec7d5cSSteven Whitehouse return 0; 101518ec7d5cSSteven Whitehouse 1016e1cb6be9SBob Peterson gfs2_replay_incr_blk(jd, &start); 1017e1cb6be9SBob Peterson for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { 101818ec7d5cSSteven Whitehouse blkno = be64_to_cpu(*ptr++); 101918ec7d5cSSteven Whitehouse esc = be64_to_cpu(*ptr++); 102018ec7d5cSSteven Whitehouse 1021a17d758bSBob Peterson jd->jd_found_blocks++; 102218ec7d5cSSteven Whitehouse 1023a17d758bSBob Peterson if (gfs2_revoke_check(jd, blkno, start)) 102418ec7d5cSSteven Whitehouse continue; 102518ec7d5cSSteven Whitehouse 102618ec7d5cSSteven Whitehouse error = gfs2_replay_read_block(jd, start, &bh_log); 102718ec7d5cSSteven Whitehouse if (error) 102818ec7d5cSSteven Whitehouse return error; 102918ec7d5cSSteven Whitehouse 103018ec7d5cSSteven Whitehouse bh_ip = gfs2_meta_new(gl, blkno); 103118ec7d5cSSteven Whitehouse memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); 103218ec7d5cSSteven Whitehouse 103318ec7d5cSSteven Whitehouse /* Unescape */ 103418ec7d5cSSteven Whitehouse if (esc) { 103518ec7d5cSSteven Whitehouse __be32 *eptr = (__be32 *)bh_ip->b_data; 103618ec7d5cSSteven Whitehouse *eptr = cpu_to_be32(GFS2_MAGIC); 103718ec7d5cSSteven Whitehouse } 103818ec7d5cSSteven Whitehouse mark_buffer_dirty(bh_ip); 103918ec7d5cSSteven Whitehouse 104018ec7d5cSSteven Whitehouse brelse(bh_log); 104118ec7d5cSSteven Whitehouse brelse(bh_ip); 104218ec7d5cSSteven Whitehouse 1043a17d758bSBob Peterson jd->jd_replayed_blocks++; 104418ec7d5cSSteven Whitehouse } 104518ec7d5cSSteven Whitehouse 104618ec7d5cSSteven Whitehouse return error; 104718ec7d5cSSteven Whitehouse } 104818ec7d5cSSteven Whitehouse 104918ec7d5cSSteven Whitehouse /* FIXME: sort out accounting for log blocks etc. */ 105018ec7d5cSSteven Whitehouse 105118ec7d5cSSteven Whitehouse static void databuf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 105218ec7d5cSSteven Whitehouse { 1053feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 1054feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 105518ec7d5cSSteven Whitehouse 105618ec7d5cSSteven Whitehouse if (error) { 10574a55752aSBob Peterson gfs2_inode_metasync(ip->i_gl); 105818ec7d5cSSteven Whitehouse return; 105918ec7d5cSSteven Whitehouse } 106018ec7d5cSSteven Whitehouse if (pass != 1) 106118ec7d5cSSteven Whitehouse return; 106218ec7d5cSSteven Whitehouse 106318ec7d5cSSteven Whitehouse /* data sync? */ 10644a55752aSBob Peterson gfs2_inode_metasync(ip->i_gl); 106518ec7d5cSSteven Whitehouse 106618ec7d5cSSteven Whitehouse fs_info(sdp, "jid=%u: Replayed %u of %u data blocks\n", 1067a17d758bSBob Peterson jd->jd_jid, jd->jd_replayed_blocks, jd->jd_found_blocks); 106818ec7d5cSSteven Whitehouse } 106918ec7d5cSSteven Whitehouse 107016ca9412SBenjamin Marzinski static void databuf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 107118ec7d5cSSteven Whitehouse { 1072d69a3c65SSteven Whitehouse struct list_head *head; 107318ec7d5cSSteven Whitehouse struct gfs2_bufdata *bd; 107418ec7d5cSSteven Whitehouse 1075d69a3c65SSteven Whitehouse if (tr == NULL) 107616ca9412SBenjamin Marzinski return; 107716ca9412SBenjamin Marzinski 1078d69a3c65SSteven Whitehouse head = &tr->tr_databuf; 107918ec7d5cSSteven Whitehouse while (!list_empty(head)) { 1080969183bcSAndreas Gruenbacher bd = list_first_entry(head, struct gfs2_bufdata, bd_list); 1081c0752aa7SBob Peterson list_del_init(&bd->bd_list); 108216ca9412SBenjamin Marzinski gfs2_unpin(sdp, bd->bd_bh, tr); 108318ec7d5cSSteven Whitehouse } 108418ec7d5cSSteven Whitehouse } 108518ec7d5cSSteven Whitehouse 108618ec7d5cSSteven Whitehouse 108732ac43f6SAndreas Gruenbacher static const struct gfs2_log_operations gfs2_buf_lops = { 1088b3b94faaSDavid Teigland .lo_before_commit = buf_lo_before_commit, 1089b3b94faaSDavid Teigland .lo_after_commit = buf_lo_after_commit, 1090b3b94faaSDavid Teigland .lo_before_scan = buf_lo_before_scan, 1091b3b94faaSDavid Teigland .lo_scan_elements = buf_lo_scan_elements, 1092b3b94faaSDavid Teigland .lo_after_scan = buf_lo_after_scan, 1093ea67eedbSSteven Whitehouse .lo_name = "buf", 1094b3b94faaSDavid Teigland }; 1095b3b94faaSDavid Teigland 109632ac43f6SAndreas Gruenbacher static const struct gfs2_log_operations gfs2_revoke_lops = { 1097b3b94faaSDavid Teigland .lo_before_commit = revoke_lo_before_commit, 1098f42ab085SSteven Whitehouse .lo_after_commit = revoke_lo_after_commit, 1099b3b94faaSDavid Teigland .lo_before_scan = revoke_lo_before_scan, 1100b3b94faaSDavid Teigland .lo_scan_elements = revoke_lo_scan_elements, 1101b3b94faaSDavid Teigland .lo_after_scan = revoke_lo_after_scan, 1102ea67eedbSSteven Whitehouse .lo_name = "revoke", 1103b3b94faaSDavid Teigland }; 1104b3b94faaSDavid Teigland 110532ac43f6SAndreas Gruenbacher static const struct gfs2_log_operations gfs2_databuf_lops = { 1106b3b94faaSDavid Teigland .lo_before_commit = databuf_lo_before_commit, 110718ec7d5cSSteven Whitehouse .lo_after_commit = databuf_lo_after_commit, 110818ec7d5cSSteven Whitehouse .lo_scan_elements = databuf_lo_scan_elements, 110918ec7d5cSSteven Whitehouse .lo_after_scan = databuf_lo_after_scan, 1110ea67eedbSSteven Whitehouse .lo_name = "databuf", 1111b3b94faaSDavid Teigland }; 1112b3b94faaSDavid Teigland 1113b09e593dSSteven Whitehouse const struct gfs2_log_operations *gfs2_log_ops[] = { 1114b3b94faaSDavid Teigland &gfs2_databuf_lops, 111516615be1SSteven Whitehouse &gfs2_buf_lops, 111616615be1SSteven Whitehouse &gfs2_revoke_lops, 1117ea67eedbSSteven Whitehouse NULL, 1118b3b94faaSDavid Teigland }; 1119b3b94faaSDavid Teigland 1120