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 999b9107a5SSteven Whitehouse * @ai: 10029687a2aSSteven Whitehouse * @flags: The inode dirty flags 1019b9107a5SSteven Whitehouse * 1029b9107a5SSteven Whitehouse */ 1039b9107a5SSteven Whitehouse 1049b9107a5SSteven Whitehouse static void gfs2_unpin(struct gfs2_sbd *sdp, struct buffer_head *bh, 10516ca9412SBenjamin Marzinski struct gfs2_trans *tr) 1069b9107a5SSteven Whitehouse { 1079b9107a5SSteven Whitehouse struct gfs2_bufdata *bd = bh->b_private; 1089b9107a5SSteven Whitehouse 10929687a2aSSteven Whitehouse BUG_ON(!buffer_uptodate(bh)); 11029687a2aSSteven Whitehouse BUG_ON(!buffer_pinned(bh)); 1119b9107a5SSteven Whitehouse 1129b9107a5SSteven Whitehouse lock_buffer(bh); 1139b9107a5SSteven Whitehouse mark_buffer_dirty(bh); 1149b9107a5SSteven Whitehouse clear_buffer_pinned(bh); 1159b9107a5SSteven Whitehouse 1167c9ca621SBob Peterson if (buffer_is_rgrp(bd)) 1177c9ca621SBob Peterson maybe_release_space(bd); 1187c9ca621SBob Peterson 119d6a079e8SDave Chinner spin_lock(&sdp->sd_ail_lock); 12016ca9412SBenjamin Marzinski if (bd->bd_tr) { 1219b9107a5SSteven Whitehouse list_del(&bd->bd_ail_st_list); 1229b9107a5SSteven Whitehouse brelse(bh); 1239b9107a5SSteven Whitehouse } else { 1249b9107a5SSteven Whitehouse struct gfs2_glock *gl = bd->bd_gl; 1259b9107a5SSteven Whitehouse list_add(&bd->bd_ail_gl_list, &gl->gl_ail_list); 1269b9107a5SSteven Whitehouse atomic_inc(&gl->gl_ail_count); 1279b9107a5SSteven Whitehouse } 12816ca9412SBenjamin Marzinski bd->bd_tr = tr; 12916ca9412SBenjamin Marzinski list_add(&bd->bd_ail_st_list, &tr->tr_ail1_list); 130d6a079e8SDave Chinner spin_unlock(&sdp->sd_ail_lock); 131d6a079e8SDave Chinner 13229687a2aSSteven Whitehouse clear_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags); 13363997775SSteven Whitehouse trace_gfs2_pin(bd, 0); 1349b9107a5SSteven Whitehouse unlock_buffer(bh); 1355e687eacSBenjamin Marzinski atomic_dec(&sdp->sd_log_pinned); 1369b9107a5SSteven Whitehouse } 1379b9107a5SSteven Whitehouse 13819ebc050SAndreas Gruenbacher void gfs2_log_incr_head(struct gfs2_sbd *sdp) 13916615be1SSteven Whitehouse { 140e8c92ed7SSteven Whitehouse BUG_ON((sdp->sd_log_flush_head == sdp->sd_log_tail) && 141e8c92ed7SSteven Whitehouse (sdp->sd_log_flush_head != sdp->sd_log_head)); 142e8c92ed7SSteven Whitehouse 143722f6f62SBob Peterson if (++sdp->sd_log_flush_head == sdp->sd_jdesc->jd_blocks) 144e8c92ed7SSteven Whitehouse sdp->sd_log_flush_head = 0; 14516615be1SSteven Whitehouse } 14616615be1SSteven Whitehouse 14719ebc050SAndreas Gruenbacher u64 gfs2_log_bmap(struct gfs2_jdesc *jd, unsigned int lblock) 14816615be1SSteven Whitehouse { 149e8c92ed7SSteven Whitehouse struct gfs2_journal_extent *je; 15016615be1SSteven Whitehouse 15119ebc050SAndreas Gruenbacher list_for_each_entry(je, &jd->extent_list, list) { 15219ebc050SAndreas Gruenbacher if (lblock >= je->lblock && lblock < je->lblock + je->blocks) 15319ebc050SAndreas Gruenbacher return je->dblock + lblock - je->lblock; 154e8c92ed7SSteven Whitehouse } 15547ac5537SSteven Whitehouse 156e8c92ed7SSteven Whitehouse return -1; 15747ac5537SSteven Whitehouse } 15847ac5537SSteven Whitehouse 15947ac5537SSteven Whitehouse /** 160e8c92ed7SSteven Whitehouse * gfs2_end_log_write_bh - end log write of pagecache data with buffers 161e8c92ed7SSteven Whitehouse * @sdp: The superblock 162e8c92ed7SSteven Whitehouse * @bvec: The bio_vec 163e8c92ed7SSteven Whitehouse * @error: The i/o status 164e8c92ed7SSteven Whitehouse * 1654519eaadSBob Peterson * This finds the relevant buffers and unlocks them and sets the 166e8c92ed7SSteven Whitehouse * error flag according to the status of the i/o request. This is 167e8c92ed7SSteven Whitehouse * used when the log is writing data which has an in-place version 168e8c92ed7SSteven Whitehouse * that is pinned in the pagecache. 169e8c92ed7SSteven Whitehouse */ 170e8c92ed7SSteven Whitehouse 1716dc4f100SMing Lei static void gfs2_end_log_write_bh(struct gfs2_sbd *sdp, 1726dc4f100SMing Lei struct bio_vec *bvec, 1734e4cbee9SChristoph Hellwig blk_status_t error) 174e8c92ed7SSteven Whitehouse { 175e8c92ed7SSteven Whitehouse struct buffer_head *bh, *next; 176e8c92ed7SSteven Whitehouse struct page *page = bvec->bv_page; 177e8c92ed7SSteven Whitehouse unsigned size; 178e8c92ed7SSteven Whitehouse 179e8c92ed7SSteven Whitehouse bh = page_buffers(page); 180e8c92ed7SSteven Whitehouse size = bvec->bv_len; 181e8c92ed7SSteven Whitehouse while (bh_offset(bh) < bvec->bv_offset) 182e8c92ed7SSteven Whitehouse bh = bh->b_this_page; 183e8c92ed7SSteven Whitehouse do { 184e8c92ed7SSteven Whitehouse if (error) 18587354e5dSJeff Layton mark_buffer_write_io_error(bh); 186e8c92ed7SSteven Whitehouse unlock_buffer(bh); 187e8c92ed7SSteven Whitehouse next = bh->b_this_page; 188e8c92ed7SSteven Whitehouse size -= bh->b_size; 189e8c92ed7SSteven Whitehouse brelse(bh); 190e8c92ed7SSteven Whitehouse bh = next; 191e8c92ed7SSteven Whitehouse } while(bh && size); 192e8c92ed7SSteven Whitehouse } 193e8c92ed7SSteven Whitehouse 194e8c92ed7SSteven Whitehouse /** 195e8c92ed7SSteven Whitehouse * gfs2_end_log_write - end of i/o to the log 196e8c92ed7SSteven Whitehouse * @bio: The bio 197e8c92ed7SSteven Whitehouse * 198e8c92ed7SSteven Whitehouse * Each bio_vec contains either data from the pagecache or data 199e8c92ed7SSteven Whitehouse * relating to the log itself. Here we iterate over the bio_vec 200e8c92ed7SSteven Whitehouse * array, processing both kinds of data. 20147ac5537SSteven Whitehouse * 20247ac5537SSteven Whitehouse */ 20347ac5537SSteven Whitehouse 2044246a0b6SChristoph Hellwig static void gfs2_end_log_write(struct bio *bio) 20547ac5537SSteven Whitehouse { 206e8c92ed7SSteven Whitehouse struct gfs2_sbd *sdp = bio->bi_private; 207e8c92ed7SSteven Whitehouse struct bio_vec *bvec; 208e8c92ed7SSteven Whitehouse struct page *page; 2096dc4f100SMing Lei struct bvec_iter_all iter_all; 21047ac5537SSteven Whitehouse 211942b0cddSBob Peterson if (bio->bi_status) { 212f34a6135SBob Peterson if (!cmpxchg(&sdp->sd_log_error, 0, (int)bio->bi_status)) 213942b0cddSBob Peterson fs_err(sdp, "Error %d writing to journal, jid=%u\n", 214942b0cddSBob Peterson bio->bi_status, sdp->sd_jdesc->jd_jid); 215f05b86dbSBob Peterson gfs2_withdraw_delayed(sdp); 216f05b86dbSBob Peterson /* prevent more writes to the journal */ 217f05b86dbSBob Peterson clear_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags); 218942b0cddSBob Peterson wake_up(&sdp->sd_logd_waitq); 219942b0cddSBob Peterson } 220e8c92ed7SSteven Whitehouse 2212b070cfeSChristoph Hellwig bio_for_each_segment_all(bvec, bio, iter_all) { 222e8c92ed7SSteven Whitehouse page = bvec->bv_page; 223e8c92ed7SSteven Whitehouse if (page_has_buffers(page)) 2244e4cbee9SChristoph Hellwig gfs2_end_log_write_bh(sdp, bvec, bio->bi_status); 225e8c92ed7SSteven Whitehouse else 226e8c92ed7SSteven Whitehouse mempool_free(page, gfs2_page_pool); 227e8c92ed7SSteven Whitehouse } 228e8c92ed7SSteven Whitehouse 229e8c92ed7SSteven Whitehouse bio_put(bio); 23047ac5537SSteven Whitehouse if (atomic_dec_and_test(&sdp->sd_log_in_flight)) 23147ac5537SSteven Whitehouse wake_up(&sdp->sd_log_flush_wait); 23247ac5537SSteven Whitehouse } 23347ac5537SSteven Whitehouse 23447ac5537SSteven Whitehouse /** 2355b846095SAbhi Das * gfs2_log_submit_bio - Submit any pending log bio 2365b846095SAbhi Das * @biop: Address of the bio pointer 237f4686c26SAbhi Das * @opf: REQ_OP | op_flags 238e8c92ed7SSteven Whitehouse * 239e8c92ed7SSteven Whitehouse * Submit any pending part-built or full bio to the block device. If 240e8c92ed7SSteven Whitehouse * there is no pending bio, then this is a no-op. 241e8c92ed7SSteven Whitehouse */ 242e8c92ed7SSteven Whitehouse 243f4686c26SAbhi Das void gfs2_log_submit_bio(struct bio **biop, int opf) 244e8c92ed7SSteven Whitehouse { 2455b846095SAbhi Das struct bio *bio = *biop; 2465b846095SAbhi Das if (bio) { 2475b846095SAbhi Das struct gfs2_sbd *sdp = bio->bi_private; 248e8c92ed7SSteven Whitehouse atomic_inc(&sdp->sd_log_in_flight); 249f4686c26SAbhi Das bio->bi_opf = opf; 2505b846095SAbhi Das submit_bio(bio); 2515b846095SAbhi Das *biop = NULL; 252e8c92ed7SSteven Whitehouse } 253e8c92ed7SSteven Whitehouse } 254e8c92ed7SSteven Whitehouse 255e8c92ed7SSteven Whitehouse /** 2565b846095SAbhi Das * gfs2_log_alloc_bio - Allocate a bio 257e8c92ed7SSteven Whitehouse * @sdp: The super block 2585b846095SAbhi Das * @blkno: The device block number we want to write to 2595b846095SAbhi Das * @end_io: The bi_end_io callback 260e8c92ed7SSteven Whitehouse * 2615b846095SAbhi Das * Allocate a new bio, initialize it with the given parameters and return it. 262e8c92ed7SSteven Whitehouse * 2635b846095SAbhi Das * Returns: The newly allocated bio 264e8c92ed7SSteven Whitehouse */ 265e8c92ed7SSteven Whitehouse 2665b846095SAbhi Das static struct bio *gfs2_log_alloc_bio(struct gfs2_sbd *sdp, u64 blkno, 2675b846095SAbhi Das bio_end_io_t *end_io) 268e8c92ed7SSteven Whitehouse { 269e8c92ed7SSteven Whitehouse struct super_block *sb = sdp->sd_vfs; 270a8affc03SChristoph Hellwig struct bio *bio = bio_alloc(GFP_NOIO, BIO_MAX_VECS); 271e8c92ed7SSteven Whitehouse 272aa83da7fSAndreas Gruenbacher bio->bi_iter.bi_sector = blkno << sdp->sd_fsb2bb_shift; 27374d46992SChristoph Hellwig bio_set_dev(bio, sb->s_bdev); 2745b846095SAbhi Das bio->bi_end_io = end_io; 275e8c92ed7SSteven Whitehouse bio->bi_private = sdp; 276e8c92ed7SSteven Whitehouse 277e8c92ed7SSteven Whitehouse return bio; 278e8c92ed7SSteven Whitehouse } 279e8c92ed7SSteven Whitehouse 280e8c92ed7SSteven Whitehouse /** 281e8c92ed7SSteven Whitehouse * gfs2_log_get_bio - Get cached log bio, or allocate a new one 282e8c92ed7SSteven Whitehouse * @sdp: The super block 283e8c92ed7SSteven Whitehouse * @blkno: The device block number we want to write to 2845b846095SAbhi Das * @bio: The bio to get or allocate 2855b846095SAbhi Das * @op: REQ_OP 2865b846095SAbhi Das * @end_io: The bi_end_io callback 2875b846095SAbhi Das * @flush: Always flush the current bio and allocate a new one? 288e8c92ed7SSteven Whitehouse * 289e8c92ed7SSteven Whitehouse * If there is a cached bio, then if the next block number is sequential 290e8c92ed7SSteven Whitehouse * with the previous one, return it, otherwise flush the bio to the 2915b846095SAbhi Das * device. If there is no cached bio, or we just flushed it, then 292e8c92ed7SSteven Whitehouse * allocate a new one. 293e8c92ed7SSteven Whitehouse * 294e8c92ed7SSteven Whitehouse * Returns: The bio to use for log writes 295e8c92ed7SSteven Whitehouse */ 296e8c92ed7SSteven Whitehouse 2975b846095SAbhi Das static struct bio *gfs2_log_get_bio(struct gfs2_sbd *sdp, u64 blkno, 2985b846095SAbhi Das struct bio **biop, int op, 2995b846095SAbhi Das bio_end_io_t *end_io, bool flush) 300e8c92ed7SSteven Whitehouse { 3015b846095SAbhi Das struct bio *bio = *biop; 302e8c92ed7SSteven Whitehouse 303e8c92ed7SSteven Whitehouse if (bio) { 3045b846095SAbhi Das u64 nblk; 3055b846095SAbhi Das 306f73a1c7dSKent Overstreet nblk = bio_end_sector(bio); 307e8c92ed7SSteven Whitehouse nblk >>= sdp->sd_fsb2bb_shift; 3085b846095SAbhi Das if (blkno == nblk && !flush) 309e8c92ed7SSteven Whitehouse return bio; 310f4686c26SAbhi Das gfs2_log_submit_bio(biop, op); 311e8c92ed7SSteven Whitehouse } 312e8c92ed7SSteven Whitehouse 3135b846095SAbhi Das *biop = gfs2_log_alloc_bio(sdp, blkno, end_io); 3145b846095SAbhi Das return *biop; 315e8c92ed7SSteven Whitehouse } 316e8c92ed7SSteven Whitehouse 317e8c92ed7SSteven Whitehouse /** 318e8c92ed7SSteven Whitehouse * gfs2_log_write - write to log 31947ac5537SSteven Whitehouse * @sdp: the filesystem 320e8c92ed7SSteven Whitehouse * @page: the page to write 321e8c92ed7SSteven Whitehouse * @size: the size of the data to write 322e8c92ed7SSteven Whitehouse * @offset: the offset within the page 323c1696fb8SBob Peterson * @blkno: block number of the log entry 32447ac5537SSteven Whitehouse * 325e8c92ed7SSteven Whitehouse * Try and add the page segment to the current bio. If that fails, 326e8c92ed7SSteven Whitehouse * submit the current bio to the device and create a new one, and 327e8c92ed7SSteven Whitehouse * then add the page segment to that. 32847ac5537SSteven Whitehouse */ 32947ac5537SSteven Whitehouse 33082218943SBob Peterson void gfs2_log_write(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd, 33182218943SBob Peterson struct page *page, unsigned size, unsigned offset, 33282218943SBob Peterson u64 blkno) 33347ac5537SSteven Whitehouse { 334e8c92ed7SSteven Whitehouse struct bio *bio; 335e8c92ed7SSteven Whitehouse int ret; 33647ac5537SSteven Whitehouse 33782218943SBob Peterson bio = gfs2_log_get_bio(sdp, blkno, &jd->jd_log_bio, REQ_OP_WRITE, 3385b846095SAbhi Das gfs2_end_log_write, false); 339e8c92ed7SSteven Whitehouse ret = bio_add_page(bio, page, size, offset); 340e8c92ed7SSteven Whitehouse if (ret == 0) { 34182218943SBob Peterson bio = gfs2_log_get_bio(sdp, blkno, &jd->jd_log_bio, 3425b846095SAbhi Das REQ_OP_WRITE, gfs2_end_log_write, true); 343e8c92ed7SSteven Whitehouse ret = bio_add_page(bio, page, size, offset); 344e8c92ed7SSteven Whitehouse WARN_ON(ret == 0); 345e8c92ed7SSteven Whitehouse } 34647ac5537SSteven Whitehouse } 34716615be1SSteven Whitehouse 348e8c92ed7SSteven Whitehouse /** 349e8c92ed7SSteven Whitehouse * gfs2_log_write_bh - write a buffer's content to the log 350e8c92ed7SSteven Whitehouse * @sdp: The super block 351e8c92ed7SSteven Whitehouse * @bh: The buffer pointing to the in-place location 352e8c92ed7SSteven Whitehouse * 353e8c92ed7SSteven Whitehouse * This writes the content of the buffer to the next available location 354e8c92ed7SSteven Whitehouse * in the log. The buffer will be unlocked once the i/o to the log has 355e8c92ed7SSteven Whitehouse * completed. 356e8c92ed7SSteven Whitehouse */ 357e8c92ed7SSteven Whitehouse 358e8c92ed7SSteven Whitehouse static void gfs2_log_write_bh(struct gfs2_sbd *sdp, struct buffer_head *bh) 35916615be1SSteven Whitehouse { 36019ebc050SAndreas Gruenbacher u64 dblock; 36119ebc050SAndreas Gruenbacher 36219ebc050SAndreas Gruenbacher dblock = gfs2_log_bmap(sdp->sd_jdesc, sdp->sd_log_flush_head); 36319ebc050SAndreas Gruenbacher gfs2_log_incr_head(sdp); 36482218943SBob Peterson gfs2_log_write(sdp, sdp->sd_jdesc, bh->b_page, bh->b_size, 36582218943SBob Peterson bh_offset(bh), dblock); 366e8c92ed7SSteven Whitehouse } 367e8c92ed7SSteven Whitehouse 368e8c92ed7SSteven Whitehouse /** 369e8c92ed7SSteven Whitehouse * gfs2_log_write_page - write one block stored in a page, into the log 370e8c92ed7SSteven Whitehouse * @sdp: The superblock 371e8c92ed7SSteven Whitehouse * @page: The struct page 372e8c92ed7SSteven Whitehouse * 373e8c92ed7SSteven Whitehouse * This writes the first block-sized part of the page into the log. Note 374e8c92ed7SSteven Whitehouse * that the page must have been allocated from the gfs2_page_pool mempool 375e8c92ed7SSteven Whitehouse * and that after this has been called, ownership has been transferred and 376e8c92ed7SSteven Whitehouse * the page may be freed at any time. 377e8c92ed7SSteven Whitehouse */ 378e8c92ed7SSteven Whitehouse 3792a6fe26cSBob Peterson static void gfs2_log_write_page(struct gfs2_sbd *sdp, struct page *page) 380e8c92ed7SSteven Whitehouse { 381e8c92ed7SSteven Whitehouse struct super_block *sb = sdp->sd_vfs; 38219ebc050SAndreas Gruenbacher u64 dblock; 38319ebc050SAndreas Gruenbacher 38419ebc050SAndreas Gruenbacher dblock = gfs2_log_bmap(sdp->sd_jdesc, sdp->sd_log_flush_head); 38519ebc050SAndreas Gruenbacher gfs2_log_incr_head(sdp); 38682218943SBob Peterson gfs2_log_write(sdp, sdp->sd_jdesc, page, sb->s_blocksize, 0, dblock); 387e8c92ed7SSteven Whitehouse } 388e8c92ed7SSteven Whitehouse 389f4686c26SAbhi Das /** 390f4686c26SAbhi Das * gfs2_end_log_read - end I/O callback for reads from the log 391f4686c26SAbhi Das * @bio: The bio 392f4686c26SAbhi Das * 393f4686c26SAbhi Das * Simply unlock the pages in the bio. The main thread will wait on them and 394f4686c26SAbhi Das * process them in order as necessary. 395f4686c26SAbhi Das */ 396f4686c26SAbhi Das 397f4686c26SAbhi Das static void gfs2_end_log_read(struct bio *bio) 398f4686c26SAbhi Das { 399f4686c26SAbhi Das struct page *page; 400f4686c26SAbhi Das struct bio_vec *bvec; 401f4686c26SAbhi Das struct bvec_iter_all iter_all; 402f4686c26SAbhi Das 403ef75bd71SLinus Torvalds bio_for_each_segment_all(bvec, bio, iter_all) { 404f4686c26SAbhi Das page = bvec->bv_page; 405f4686c26SAbhi Das if (bio->bi_status) { 406f4686c26SAbhi Das int err = blk_status_to_errno(bio->bi_status); 407f4686c26SAbhi Das 408f4686c26SAbhi Das SetPageError(page); 409f4686c26SAbhi Das mapping_set_error(page->mapping, err); 410f4686c26SAbhi Das } 411f4686c26SAbhi Das unlock_page(page); 412f4686c26SAbhi Das } 413f4686c26SAbhi Das 414f4686c26SAbhi Das bio_put(bio); 415f4686c26SAbhi Das } 416f4686c26SAbhi Das 417f4686c26SAbhi Das /** 418f4686c26SAbhi Das * gfs2_jhead_pg_srch - Look for the journal head in a given page. 419f4686c26SAbhi Das * @jd: The journal descriptor 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 453f4686c26SAbhi Das * @done: If set, perform only cleanup, else search and set if found. 454f4686c26SAbhi Das * 455f4686c26SAbhi Das * Find the page with 'index' in the journal's mapping. Search the page for 456f4686c26SAbhi Das * the journal head if requested (cleanup == false). Release refs on the 457f4686c26SAbhi Das * page so the page cache can reclaim it (put_page() twice). We grabbed a 458f4686c26SAbhi Das * reference on this page two times, first when we did a find_or_create_page() 459f4686c26SAbhi Das * to obtain the page to add it to the bio and second when we do a 460f4686c26SAbhi Das * find_get_page() here to get the page to wait on while I/O on it is being 461f4686c26SAbhi Das * completed. 462f4686c26SAbhi Das * This function is also used to free up a page we might've grabbed but not 463f4686c26SAbhi Das * used. Maybe we added it to a bio, but not submitted it for I/O. Or we 464f4686c26SAbhi Das * submitted the I/O, but we already found the jhead so we only need to drop 465f4686c26SAbhi Das * our references to the page. 466f4686c26SAbhi Das */ 467f4686c26SAbhi Das 468f4686c26SAbhi Das static void gfs2_jhead_process_page(struct gfs2_jdesc *jd, unsigned long index, 469f4686c26SAbhi Das struct gfs2_log_header_host *head, 470f4686c26SAbhi Das bool *done) 471f4686c26SAbhi Das { 472f4686c26SAbhi Das struct page *page; 473f4686c26SAbhi Das 474f4686c26SAbhi Das page = find_get_page(jd->jd_inode->i_mapping, index); 475f4686c26SAbhi Das wait_on_page_locked(page); 476f4686c26SAbhi Das 477f4686c26SAbhi Das if (PageError(page)) 478f4686c26SAbhi Das *done = true; 479f4686c26SAbhi Das 480f4686c26SAbhi Das if (!*done) 481f4686c26SAbhi Das *done = gfs2_jhead_pg_srch(jd, head, page); 482f4686c26SAbhi Das 483f4686c26SAbhi Das put_page(page); /* Once for find_get_page */ 484f4686c26SAbhi Das put_page(page); /* Once more for find_or_create_page */ 485f4686c26SAbhi Das } 486f4686c26SAbhi Das 487eed0f953SAndreas Gruenbacher static struct bio *gfs2_chain_bio(struct bio *prev, unsigned int nr_iovecs) 488eed0f953SAndreas Gruenbacher { 489eed0f953SAndreas Gruenbacher struct bio *new; 490eed0f953SAndreas Gruenbacher 491eed0f953SAndreas Gruenbacher new = bio_alloc(GFP_NOIO, nr_iovecs); 492eed0f953SAndreas Gruenbacher bio_copy_dev(new, prev); 493eed0f953SAndreas Gruenbacher new->bi_iter.bi_sector = bio_end_sector(prev); 494eed0f953SAndreas Gruenbacher new->bi_opf = prev->bi_opf; 495eed0f953SAndreas Gruenbacher new->bi_write_hint = prev->bi_write_hint; 496eed0f953SAndreas Gruenbacher bio_chain(new, prev); 497eed0f953SAndreas Gruenbacher submit_bio(prev); 498eed0f953SAndreas Gruenbacher return new; 499eed0f953SAndreas Gruenbacher } 500eed0f953SAndreas Gruenbacher 501f4686c26SAbhi Das /** 502f4686c26SAbhi Das * gfs2_find_jhead - find the head of a log 503f4686c26SAbhi Das * @jd: The journal descriptor 504f4686c26SAbhi Das * @head: The log descriptor for the head of the log is returned here 505f4686c26SAbhi Das * 506f4686c26SAbhi Das * Do a search of a journal by reading it in large chunks using bios and find 507f4686c26SAbhi Das * the valid log entry with the highest sequence number. (i.e. the log head) 508f4686c26SAbhi Das * 509f4686c26SAbhi Das * Returns: 0 on success, errno otherwise 510f4686c26SAbhi Das */ 511f4686c26SAbhi Das int gfs2_find_jhead(struct gfs2_jdesc *jd, struct gfs2_log_header_host *head, 512f4686c26SAbhi Das bool keep_cache) 513f4686c26SAbhi Das { 514f4686c26SAbhi Das struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 515f4686c26SAbhi Das struct address_space *mapping = jd->jd_inode->i_mapping; 516f4686c26SAbhi Das unsigned int block = 0, blocks_submitted = 0, blocks_read = 0; 517eed0f953SAndreas Gruenbacher unsigned int bsize = sdp->sd_sb.sb_bsize, off; 518f4686c26SAbhi Das unsigned int bsize_shift = sdp->sd_sb.sb_bsize_shift; 519f4686c26SAbhi Das unsigned int shift = PAGE_SHIFT - bsize_shift; 52020be493bSAndreas Gruenbacher unsigned int max_blocks = 2 * 1024 * 1024 >> bsize_shift; 521f4686c26SAbhi Das struct gfs2_journal_extent *je; 522f4686c26SAbhi Das int sz, ret = 0; 523f4686c26SAbhi Das struct bio *bio = NULL; 524f4686c26SAbhi Das struct page *page = NULL; 52520be493bSAndreas Gruenbacher bool done = false; 526f4686c26SAbhi Das errseq_t since; 527f4686c26SAbhi Das 528f4686c26SAbhi Das memset(head, 0, sizeof(*head)); 529f4686c26SAbhi Das if (list_empty(&jd->extent_list)) 530f4686c26SAbhi Das gfs2_map_journal_extents(sdp, jd); 531f4686c26SAbhi Das 532f4686c26SAbhi Das since = filemap_sample_wb_err(mapping); 533f4686c26SAbhi Das list_for_each_entry(je, &jd->extent_list, list) { 534eed0f953SAndreas Gruenbacher u64 dblock = je->dblock; 535f4686c26SAbhi Das 536eed0f953SAndreas Gruenbacher for (; block < je->lblock + je->blocks; block++, dblock++) { 537f4686c26SAbhi Das if (!page) { 538f4686c26SAbhi Das page = find_or_create_page(mapping, 539f4686c26SAbhi Das block >> shift, GFP_NOFS); 540f4686c26SAbhi Das if (!page) { 541f4686c26SAbhi Das ret = -ENOMEM; 542f4686c26SAbhi Das done = true; 543f4686c26SAbhi Das goto out; 544f4686c26SAbhi Das } 545eed0f953SAndreas Gruenbacher off = 0; 546eed0f953SAndreas Gruenbacher } 547eed0f953SAndreas Gruenbacher 54820be493bSAndreas Gruenbacher if (bio && (off || block < blocks_submitted + max_blocks)) { 549aa83da7fSAndreas Gruenbacher sector_t sector = dblock << sdp->sd_fsb2bb_shift; 550aa83da7fSAndreas Gruenbacher 551aa83da7fSAndreas Gruenbacher if (bio_end_sector(bio) == sector) { 552eed0f953SAndreas Gruenbacher sz = bio_add_page(bio, page, bsize, off); 553eed0f953SAndreas Gruenbacher if (sz == bsize) 554eed0f953SAndreas Gruenbacher goto block_added; 555aa83da7fSAndreas Gruenbacher } 556eed0f953SAndreas Gruenbacher if (off) { 557eed0f953SAndreas Gruenbacher unsigned int blocks = 558eed0f953SAndreas Gruenbacher (PAGE_SIZE - off) >> bsize_shift; 559eed0f953SAndreas Gruenbacher 560eed0f953SAndreas Gruenbacher bio = gfs2_chain_bio(bio, blocks); 561eed0f953SAndreas Gruenbacher goto add_block_to_new_bio; 562eed0f953SAndreas Gruenbacher } 563f4686c26SAbhi Das } 564f4686c26SAbhi Das 565f4686c26SAbhi Das if (bio) { 56620be493bSAndreas Gruenbacher blocks_submitted = block; 567f4686c26SAbhi Das submit_bio(bio); 568f4686c26SAbhi Das } 569f4686c26SAbhi Das 570f4686c26SAbhi Das bio = gfs2_log_alloc_bio(sdp, dblock, gfs2_end_log_read); 571f4686c26SAbhi Das bio->bi_opf = REQ_OP_READ; 572eed0f953SAndreas Gruenbacher add_block_to_new_bio: 573eed0f953SAndreas Gruenbacher sz = bio_add_page(bio, page, bsize, off); 574eed0f953SAndreas Gruenbacher BUG_ON(sz != bsize); 575eed0f953SAndreas Gruenbacher block_added: 576eed0f953SAndreas Gruenbacher off += bsize; 577eed0f953SAndreas Gruenbacher if (off == PAGE_SIZE) 578f4686c26SAbhi Das page = NULL; 57920be493bSAndreas Gruenbacher if (blocks_submitted <= blocks_read + max_blocks) { 580f4686c26SAbhi Das /* Keep at least one bio in flight */ 581f4686c26SAbhi Das continue; 582f4686c26SAbhi Das } 583f4686c26SAbhi Das 584f4686c26SAbhi Das gfs2_jhead_process_page(jd, blocks_read >> shift, head, &done); 585f4686c26SAbhi Das blocks_read += PAGE_SIZE >> bsize_shift; 586f4686c26SAbhi Das if (done) 587f4686c26SAbhi Das goto out; /* found */ 588f4686c26SAbhi Das } 589f4686c26SAbhi Das } 590f4686c26SAbhi Das 591f4686c26SAbhi Das out: 592f4686c26SAbhi Das if (bio) 593f4686c26SAbhi Das submit_bio(bio); 594f4686c26SAbhi Das while (blocks_read < block) { 595f4686c26SAbhi Das gfs2_jhead_process_page(jd, blocks_read >> shift, head, &done); 596f4686c26SAbhi Das blocks_read += PAGE_SIZE >> bsize_shift; 597f4686c26SAbhi Das } 598f4686c26SAbhi Das 599f4686c26SAbhi Das if (!ret) 600f4686c26SAbhi Das ret = filemap_check_wb_err(mapping, since); 601f4686c26SAbhi Das 602f4686c26SAbhi Das if (!keep_cache) 603f4686c26SAbhi Das truncate_inode_pages(mapping, 0); 604f4686c26SAbhi Das 605f4686c26SAbhi Das return ret; 606f4686c26SAbhi Das } 607f4686c26SAbhi Das 608dad30e90SSteven Whitehouse static struct page *gfs2_get_log_desc(struct gfs2_sbd *sdp, u32 ld_type, 609dad30e90SSteven Whitehouse u32 ld_length, u32 ld_data1) 610e8c92ed7SSteven Whitehouse { 611144a4c2fSSteven Whitehouse struct page *page = mempool_alloc(gfs2_page_pool, GFP_NOIO); 612e8c92ed7SSteven Whitehouse struct gfs2_log_descriptor *ld = page_address(page); 613e8c92ed7SSteven Whitehouse clear_page(ld); 61416615be1SSteven Whitehouse ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC); 61516615be1SSteven Whitehouse ld->ld_header.mh_type = cpu_to_be32(GFS2_METATYPE_LD); 61616615be1SSteven Whitehouse ld->ld_header.mh_format = cpu_to_be32(GFS2_FORMAT_LD); 61716615be1SSteven Whitehouse ld->ld_type = cpu_to_be32(ld_type); 618dad30e90SSteven Whitehouse ld->ld_length = cpu_to_be32(ld_length); 619dad30e90SSteven Whitehouse ld->ld_data1 = cpu_to_be32(ld_data1); 62016615be1SSteven Whitehouse ld->ld_data2 = 0; 621e8c92ed7SSteven Whitehouse return page; 62216615be1SSteven Whitehouse } 62316615be1SSteven Whitehouse 624dad30e90SSteven Whitehouse static void gfs2_check_magic(struct buffer_head *bh) 625dad30e90SSteven Whitehouse { 626dad30e90SSteven Whitehouse void *kaddr; 627dad30e90SSteven Whitehouse __be32 *ptr; 628dad30e90SSteven Whitehouse 629dad30e90SSteven Whitehouse clear_buffer_escaped(bh); 630dad30e90SSteven Whitehouse kaddr = kmap_atomic(bh->b_page); 631dad30e90SSteven Whitehouse ptr = kaddr + bh_offset(bh); 632dad30e90SSteven Whitehouse if (*ptr == cpu_to_be32(GFS2_MAGIC)) 633dad30e90SSteven Whitehouse set_buffer_escaped(bh); 634dad30e90SSteven Whitehouse kunmap_atomic(kaddr); 635dad30e90SSteven Whitehouse } 636dad30e90SSteven Whitehouse 637*4f0f586bSSami Tolvanen static int blocknr_cmp(void *priv, const struct list_head *a, 638*4f0f586bSSami Tolvanen const struct list_head *b) 6397f63257dSBenjamin Marzinski { 6407f63257dSBenjamin Marzinski struct gfs2_bufdata *bda, *bdb; 6417f63257dSBenjamin Marzinski 6427f63257dSBenjamin Marzinski bda = list_entry(a, struct gfs2_bufdata, bd_list); 6437f63257dSBenjamin Marzinski bdb = list_entry(b, struct gfs2_bufdata, bd_list); 6447f63257dSBenjamin Marzinski 6457f63257dSBenjamin Marzinski if (bda->bd_bh->b_blocknr < bdb->bd_bh->b_blocknr) 6467f63257dSBenjamin Marzinski return -1; 6477f63257dSBenjamin Marzinski if (bda->bd_bh->b_blocknr > bdb->bd_bh->b_blocknr) 6487f63257dSBenjamin Marzinski return 1; 6497f63257dSBenjamin Marzinski return 0; 6507f63257dSBenjamin Marzinski } 6517f63257dSBenjamin Marzinski 652dad30e90SSteven Whitehouse static void gfs2_before_commit(struct gfs2_sbd *sdp, unsigned int limit, 653dad30e90SSteven Whitehouse unsigned int total, struct list_head *blist, 654dad30e90SSteven Whitehouse bool is_databuf) 655b3b94faaSDavid Teigland { 656b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld; 657b3b94faaSDavid Teigland struct gfs2_bufdata *bd1 = NULL, *bd2; 658e8c92ed7SSteven Whitehouse struct page *page; 659b3b94faaSDavid Teigland unsigned int num; 660b3b94faaSDavid Teigland unsigned n; 661b3b94faaSDavid Teigland __be64 *ptr; 662b3b94faaSDavid Teigland 663905d2aefSBob Peterson gfs2_log_lock(sdp); 6647f63257dSBenjamin Marzinski list_sort(NULL, blist, blocknr_cmp); 665c0752aa7SBob Peterson bd1 = bd2 = list_prepare_entry(bd1, blist, bd_list); 666b3b94faaSDavid Teigland while(total) { 667b3b94faaSDavid Teigland num = total; 668b3b94faaSDavid Teigland if (total > limit) 669b3b94faaSDavid Teigland num = limit; 670905d2aefSBob Peterson gfs2_log_unlock(sdp); 6714a586812SBob Peterson page = gfs2_get_log_desc(sdp, 6724a586812SBob Peterson is_databuf ? GFS2_LOG_DESC_JDATA : 6734a586812SBob Peterson GFS2_LOG_DESC_METADATA, num + 1, num); 674e8c92ed7SSteven Whitehouse ld = page_address(page); 675905d2aefSBob Peterson gfs2_log_lock(sdp); 676e8c92ed7SSteven Whitehouse ptr = (__be64 *)(ld + 1); 677b3b94faaSDavid Teigland 678b3b94faaSDavid Teigland n = 0; 679c0752aa7SBob Peterson list_for_each_entry_continue(bd1, blist, bd_list) { 680b3b94faaSDavid Teigland *ptr++ = cpu_to_be64(bd1->bd_bh->b_blocknr); 681dad30e90SSteven Whitehouse if (is_databuf) { 682dad30e90SSteven Whitehouse gfs2_check_magic(bd1->bd_bh); 683dad30e90SSteven Whitehouse *ptr++ = cpu_to_be64(buffer_escaped(bd1->bd_bh) ? 1 : 0); 684dad30e90SSteven Whitehouse } 685b3b94faaSDavid Teigland if (++n >= num) 686b3b94faaSDavid Teigland break; 687b3b94faaSDavid Teigland } 688b3b94faaSDavid Teigland 689905d2aefSBob Peterson gfs2_log_unlock(sdp); 690e8c92ed7SSteven Whitehouse gfs2_log_write_page(sdp, page); 691905d2aefSBob Peterson gfs2_log_lock(sdp); 692b3b94faaSDavid Teigland 693b3b94faaSDavid Teigland n = 0; 694c0752aa7SBob Peterson list_for_each_entry_continue(bd2, blist, bd_list) { 69516615be1SSteven Whitehouse get_bh(bd2->bd_bh); 696905d2aefSBob Peterson gfs2_log_unlock(sdp); 69716615be1SSteven Whitehouse lock_buffer(bd2->bd_bh); 698dad30e90SSteven Whitehouse 699dad30e90SSteven Whitehouse if (buffer_escaped(bd2->bd_bh)) { 700dad30e90SSteven Whitehouse void *kaddr; 701dad30e90SSteven Whitehouse page = mempool_alloc(gfs2_page_pool, GFP_NOIO); 702dad30e90SSteven Whitehouse ptr = page_address(page); 703dad30e90SSteven Whitehouse kaddr = kmap_atomic(bd2->bd_bh->b_page); 704dad30e90SSteven Whitehouse memcpy(ptr, kaddr + bh_offset(bd2->bd_bh), 705dad30e90SSteven Whitehouse bd2->bd_bh->b_size); 706dad30e90SSteven Whitehouse kunmap_atomic(kaddr); 707dad30e90SSteven Whitehouse *(__be32 *)ptr = 0; 708dad30e90SSteven Whitehouse clear_buffer_escaped(bd2->bd_bh); 709dad30e90SSteven Whitehouse unlock_buffer(bd2->bd_bh); 710dad30e90SSteven Whitehouse brelse(bd2->bd_bh); 711dad30e90SSteven Whitehouse gfs2_log_write_page(sdp, page); 712dad30e90SSteven Whitehouse } else { 713e8c92ed7SSteven Whitehouse gfs2_log_write_bh(sdp, bd2->bd_bh); 714dad30e90SSteven Whitehouse } 715905d2aefSBob Peterson gfs2_log_lock(sdp); 716b3b94faaSDavid Teigland if (++n >= num) 717b3b94faaSDavid Teigland break; 718b3b94faaSDavid Teigland } 719b3b94faaSDavid Teigland 720905d2aefSBob Peterson BUG_ON(total < num); 721b3b94faaSDavid Teigland total -= num; 722b3b94faaSDavid Teigland } 723905d2aefSBob Peterson gfs2_log_unlock(sdp); 724b3b94faaSDavid Teigland } 725b3b94faaSDavid Teigland 726d69a3c65SSteven Whitehouse static void buf_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 727dad30e90SSteven Whitehouse { 728dad30e90SSteven Whitehouse unsigned int limit = buf_limit(sdp); /* 503 for 4k blocks */ 729022ef4feSSteven Whitehouse unsigned int nbuf; 730d69a3c65SSteven Whitehouse if (tr == NULL) 731d69a3c65SSteven Whitehouse return; 732022ef4feSSteven Whitehouse nbuf = tr->tr_num_buf_new - tr->tr_num_buf_rm; 733022ef4feSSteven Whitehouse gfs2_before_commit(sdp, limit, nbuf, &tr->tr_buf, 0); 734dad30e90SSteven Whitehouse } 735dad30e90SSteven Whitehouse 73616ca9412SBenjamin Marzinski static void buf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 737b3b94faaSDavid Teigland { 738d69a3c65SSteven Whitehouse struct list_head *head; 739b3b94faaSDavid Teigland struct gfs2_bufdata *bd; 740b3b94faaSDavid Teigland 741d69a3c65SSteven Whitehouse if (tr == NULL) 74216ca9412SBenjamin Marzinski return; 74316ca9412SBenjamin Marzinski 744d69a3c65SSteven Whitehouse head = &tr->tr_buf; 745b3b94faaSDavid Teigland while (!list_empty(head)) { 746969183bcSAndreas Gruenbacher bd = list_first_entry(head, struct gfs2_bufdata, bd_list); 747c0752aa7SBob Peterson list_del_init(&bd->bd_list); 74816ca9412SBenjamin Marzinski gfs2_unpin(sdp, bd->bd_bh, tr); 749b3b94faaSDavid Teigland } 750b3b94faaSDavid Teigland } 751b3b94faaSDavid Teigland 752b3b94faaSDavid Teigland static void buf_lo_before_scan(struct gfs2_jdesc *jd, 75355167622SAl Viro struct gfs2_log_header_host *head, int pass) 754b3b94faaSDavid Teigland { 755b3b94faaSDavid Teigland if (pass != 0) 756b3b94faaSDavid Teigland return; 757b3b94faaSDavid Teigland 758a17d758bSBob Peterson jd->jd_found_blocks = 0; 759a17d758bSBob Peterson jd->jd_replayed_blocks = 0; 760b3b94faaSDavid Teigland } 761b3b94faaSDavid Teigland 7627c70b896SBob Peterson static int buf_lo_scan_elements(struct gfs2_jdesc *jd, u32 start, 763b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld, __be64 *ptr, 764b3b94faaSDavid Teigland int pass) 765b3b94faaSDavid Teigland { 766feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 767feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 7685c676f6dSSteven Whitehouse struct gfs2_glock *gl = ip->i_gl; 769b3b94faaSDavid Teigland unsigned int blks = be32_to_cpu(ld->ld_data1); 770b3b94faaSDavid Teigland struct buffer_head *bh_log, *bh_ip; 771cd915493SSteven Whitehouse u64 blkno; 772b3b94faaSDavid Teigland int error = 0; 773b3b94faaSDavid Teigland 774b3b94faaSDavid Teigland if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_METADATA) 775b3b94faaSDavid Teigland return 0; 776b3b94faaSDavid Teigland 777e1cb6be9SBob Peterson gfs2_replay_incr_blk(jd, &start); 778b3b94faaSDavid Teigland 779e1cb6be9SBob Peterson for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { 780b3b94faaSDavid Teigland blkno = be64_to_cpu(*ptr++); 781b3b94faaSDavid Teigland 782a17d758bSBob Peterson jd->jd_found_blocks++; 783b3b94faaSDavid Teigland 784a17d758bSBob Peterson if (gfs2_revoke_check(jd, blkno, start)) 785b3b94faaSDavid Teigland continue; 786b3b94faaSDavid Teigland 787b3b94faaSDavid Teigland error = gfs2_replay_read_block(jd, start, &bh_log); 788b3b94faaSDavid Teigland if (error) 789b3b94faaSDavid Teigland return error; 790b3b94faaSDavid Teigland 791b3b94faaSDavid Teigland bh_ip = gfs2_meta_new(gl, blkno); 792b3b94faaSDavid Teigland memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); 793b3b94faaSDavid Teigland 794b3b94faaSDavid Teigland if (gfs2_meta_check(sdp, bh_ip)) 795b3b94faaSDavid Teigland error = -EIO; 796d14e1ca3SBob Peterson else { 797d14e1ca3SBob Peterson struct gfs2_meta_header *mh = 798d14e1ca3SBob Peterson (struct gfs2_meta_header *)bh_ip->b_data; 799b3b94faaSDavid Teigland 800d14e1ca3SBob Peterson if (mh->mh_type == cpu_to_be32(GFS2_METATYPE_RG)) { 801d14e1ca3SBob Peterson struct gfs2_rgrpd *rgd; 802d14e1ca3SBob Peterson 803d14e1ca3SBob Peterson rgd = gfs2_blk2rgrpd(sdp, blkno, false); 804d14e1ca3SBob Peterson if (rgd && rgd->rd_addr == blkno && 805d14e1ca3SBob Peterson rgd->rd_bits && rgd->rd_bits->bi_bh) { 806d14e1ca3SBob Peterson fs_info(sdp, "Replaying 0x%llx but we " 807d14e1ca3SBob Peterson "already have a bh!\n", 808d14e1ca3SBob Peterson (unsigned long long)blkno); 809d14e1ca3SBob Peterson fs_info(sdp, "busy:%d, pinned:%d\n", 810d14e1ca3SBob Peterson buffer_busy(rgd->rd_bits->bi_bh) ? 1 : 0, 811d14e1ca3SBob Peterson buffer_pinned(rgd->rd_bits->bi_bh)); 8123792ce97SBob Peterson gfs2_dump_glock(NULL, rgd->rd_gl, true); 813d14e1ca3SBob Peterson } 814d14e1ca3SBob Peterson } 815d14e1ca3SBob Peterson mark_buffer_dirty(bh_ip); 816d14e1ca3SBob Peterson } 817b3b94faaSDavid Teigland brelse(bh_log); 818b3b94faaSDavid Teigland brelse(bh_ip); 819b3b94faaSDavid Teigland 820b3b94faaSDavid Teigland if (error) 821b3b94faaSDavid Teigland break; 822b3b94faaSDavid Teigland 823a17d758bSBob Peterson jd->jd_replayed_blocks++; 824b3b94faaSDavid Teigland } 825b3b94faaSDavid Teigland 826b3b94faaSDavid Teigland return error; 827b3b94faaSDavid Teigland } 828b3b94faaSDavid Teigland 829b3b94faaSDavid Teigland static void buf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 830b3b94faaSDavid Teigland { 831feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 832feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 833b3b94faaSDavid Teigland 834b3b94faaSDavid Teigland if (error) { 8354a55752aSBob Peterson gfs2_inode_metasync(ip->i_gl); 836b3b94faaSDavid Teigland return; 837b3b94faaSDavid Teigland } 838b3b94faaSDavid Teigland if (pass != 1) 839b3b94faaSDavid Teigland return; 840b3b94faaSDavid Teigland 8414a55752aSBob Peterson gfs2_inode_metasync(ip->i_gl); 842b3b94faaSDavid Teigland 843b3b94faaSDavid Teigland fs_info(sdp, "jid=%u: Replayed %u of %u blocks\n", 844a17d758bSBob Peterson jd->jd_jid, jd->jd_replayed_blocks, jd->jd_found_blocks); 845b3b94faaSDavid Teigland } 846b3b94faaSDavid Teigland 847d69a3c65SSteven Whitehouse static void revoke_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 848b3b94faaSDavid Teigland { 849b3b94faaSDavid Teigland struct gfs2_meta_header *mh; 850b3b94faaSDavid Teigland unsigned int offset; 851a5b1d3fcSAndreas Gruenbacher struct list_head *head = &sdp->sd_log_revokes; 85282e86087SSteven Whitehouse struct gfs2_bufdata *bd; 853e8c92ed7SSteven Whitehouse struct page *page; 854dad30e90SSteven Whitehouse unsigned int length; 855b3b94faaSDavid Teigland 856e7501bf8SAndreas Gruenbacher gfs2_flush_revokes(sdp); 857b3b94faaSDavid Teigland if (!sdp->sd_log_num_revoke) 858b3b94faaSDavid Teigland return; 859b3b94faaSDavid Teigland 8602e9eeaa1SBob Peterson length = gfs2_struct2blk(sdp, sdp->sd_log_num_revoke); 861dad30e90SSteven Whitehouse page = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_REVOKE, length, sdp->sd_log_num_revoke); 862b3b94faaSDavid Teigland offset = sizeof(struct gfs2_log_descriptor); 863b3b94faaSDavid Teigland 864c0752aa7SBob Peterson list_for_each_entry(bd, head, bd_list) { 865b3b94faaSDavid Teigland sdp->sd_log_num_revoke--; 866b3b94faaSDavid Teigland 867cd915493SSteven Whitehouse if (offset + sizeof(u64) > sdp->sd_sb.sb_bsize) { 868e8c92ed7SSteven Whitehouse gfs2_log_write_page(sdp, page); 869e8c92ed7SSteven Whitehouse page = mempool_alloc(gfs2_page_pool, GFP_NOIO); 870e8c92ed7SSteven Whitehouse mh = page_address(page); 871e8c92ed7SSteven Whitehouse clear_page(mh); 872b3b94faaSDavid Teigland mh->mh_magic = cpu_to_be32(GFS2_MAGIC); 873e3167dedSSteven Whitehouse mh->mh_type = cpu_to_be32(GFS2_METATYPE_LB); 874e3167dedSSteven Whitehouse mh->mh_format = cpu_to_be32(GFS2_FORMAT_LB); 875b3b94faaSDavid Teigland offset = sizeof(struct gfs2_meta_header); 876b3b94faaSDavid Teigland } 877b3b94faaSDavid Teigland 878e8c92ed7SSteven Whitehouse *(__be64 *)(page_address(page) + offset) = cpu_to_be64(bd->bd_blkno); 879cd915493SSteven Whitehouse offset += sizeof(u64); 880b3b94faaSDavid Teigland } 881b3b94faaSDavid Teigland gfs2_assert_withdraw(sdp, !sdp->sd_log_num_revoke); 882b3b94faaSDavid Teigland 883e8c92ed7SSteven Whitehouse gfs2_log_write_page(sdp, page); 884b3b94faaSDavid Teigland } 885b3b94faaSDavid Teigland 88616ca9412SBenjamin Marzinski static void revoke_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 887f42ab085SSteven Whitehouse { 888a5b1d3fcSAndreas Gruenbacher struct list_head *head = &sdp->sd_log_revokes; 889638803d4SBob Peterson struct gfs2_bufdata *bd; 890638803d4SBob Peterson struct gfs2_glock *gl; 891f42ab085SSteven Whitehouse 892638803d4SBob Peterson while (!list_empty(head)) { 893969183bcSAndreas Gruenbacher bd = list_first_entry(head, struct gfs2_bufdata, bd_list); 894638803d4SBob Peterson list_del_init(&bd->bd_list); 895638803d4SBob Peterson gl = bd->bd_gl; 896fe5e7ba1SBob Peterson gfs2_glock_remove_revoke(gl); 897638803d4SBob Peterson kmem_cache_free(gfs2_bufdata_cachep, bd); 898638803d4SBob Peterson } 899f42ab085SSteven Whitehouse } 900f42ab085SSteven Whitehouse 901b3b94faaSDavid Teigland static void revoke_lo_before_scan(struct gfs2_jdesc *jd, 90255167622SAl Viro struct gfs2_log_header_host *head, int pass) 903b3b94faaSDavid Teigland { 904b3b94faaSDavid Teigland if (pass != 0) 905b3b94faaSDavid Teigland return; 906b3b94faaSDavid Teigland 907a17d758bSBob Peterson jd->jd_found_revokes = 0; 908a17d758bSBob Peterson jd->jd_replay_tail = head->lh_tail; 909b3b94faaSDavid Teigland } 910b3b94faaSDavid Teigland 9117c70b896SBob Peterson static int revoke_lo_scan_elements(struct gfs2_jdesc *jd, u32 start, 912b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld, __be64 *ptr, 913b3b94faaSDavid Teigland int pass) 914b3b94faaSDavid Teigland { 915feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 916b3b94faaSDavid Teigland unsigned int blks = be32_to_cpu(ld->ld_length); 917b3b94faaSDavid Teigland unsigned int revokes = be32_to_cpu(ld->ld_data1); 918b3b94faaSDavid Teigland struct buffer_head *bh; 919b3b94faaSDavid Teigland unsigned int offset; 920cd915493SSteven Whitehouse u64 blkno; 921b3b94faaSDavid Teigland int first = 1; 922b3b94faaSDavid Teigland int error; 923b3b94faaSDavid Teigland 924b3b94faaSDavid Teigland if (pass != 0 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_REVOKE) 925b3b94faaSDavid Teigland return 0; 926b3b94faaSDavid Teigland 927b3b94faaSDavid Teigland offset = sizeof(struct gfs2_log_descriptor); 928b3b94faaSDavid Teigland 929e1cb6be9SBob Peterson for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { 930b3b94faaSDavid Teigland error = gfs2_replay_read_block(jd, start, &bh); 931b3b94faaSDavid Teigland if (error) 932b3b94faaSDavid Teigland return error; 933b3b94faaSDavid Teigland 934b3b94faaSDavid Teigland if (!first) 935b3b94faaSDavid Teigland gfs2_metatype_check(sdp, bh, GFS2_METATYPE_LB); 936b3b94faaSDavid Teigland 937cd915493SSteven Whitehouse while (offset + sizeof(u64) <= sdp->sd_sb.sb_bsize) { 938b3b94faaSDavid Teigland blkno = be64_to_cpu(*(__be64 *)(bh->b_data + offset)); 939b3b94faaSDavid Teigland 940a17d758bSBob Peterson error = gfs2_revoke_add(jd, blkno, start); 9413ad62e87SBob Peterson if (error < 0) { 9423ad62e87SBob Peterson brelse(bh); 943b3b94faaSDavid Teigland return error; 9443ad62e87SBob Peterson } 945b3b94faaSDavid Teigland else if (error) 946a17d758bSBob Peterson jd->jd_found_revokes++; 947b3b94faaSDavid Teigland 948b3b94faaSDavid Teigland if (!--revokes) 949b3b94faaSDavid Teigland break; 950cd915493SSteven Whitehouse offset += sizeof(u64); 951b3b94faaSDavid Teigland } 952b3b94faaSDavid Teigland 953b3b94faaSDavid Teigland brelse(bh); 954b3b94faaSDavid Teigland offset = sizeof(struct gfs2_meta_header); 955b3b94faaSDavid Teigland first = 0; 956b3b94faaSDavid Teigland } 957b3b94faaSDavid Teigland 958b3b94faaSDavid Teigland return 0; 959b3b94faaSDavid Teigland } 960b3b94faaSDavid Teigland 961b3b94faaSDavid Teigland static void revoke_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 962b3b94faaSDavid Teigland { 963feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 964b3b94faaSDavid Teigland 965b3b94faaSDavid Teigland if (error) { 966a17d758bSBob Peterson gfs2_revoke_clean(jd); 967b3b94faaSDavid Teigland return; 968b3b94faaSDavid Teigland } 969b3b94faaSDavid Teigland if (pass != 1) 970b3b94faaSDavid Teigland return; 971b3b94faaSDavid Teigland 972b3b94faaSDavid Teigland fs_info(sdp, "jid=%u: Found %u revoke tags\n", 973a17d758bSBob Peterson jd->jd_jid, jd->jd_found_revokes); 974b3b94faaSDavid Teigland 975a17d758bSBob Peterson gfs2_revoke_clean(jd); 976b3b94faaSDavid Teigland } 977b3b94faaSDavid Teigland 97818ec7d5cSSteven Whitehouse /** 97918ec7d5cSSteven Whitehouse * databuf_lo_before_commit - Scan the data buffers, writing as we go 98018ec7d5cSSteven Whitehouse * 98118ec7d5cSSteven Whitehouse */ 982d7b616e2SSteven Whitehouse 983d69a3c65SSteven Whitehouse static void databuf_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 984b3b94faaSDavid Teigland { 985022ef4feSSteven Whitehouse unsigned int limit = databuf_limit(sdp); 986022ef4feSSteven Whitehouse unsigned int nbuf; 987d69a3c65SSteven Whitehouse if (tr == NULL) 988d69a3c65SSteven Whitehouse return; 989022ef4feSSteven Whitehouse nbuf = tr->tr_num_databuf_new - tr->tr_num_databuf_rm; 990022ef4feSSteven Whitehouse gfs2_before_commit(sdp, limit, nbuf, &tr->tr_databuf, 1); 991b3b94faaSDavid Teigland } 992b3b94faaSDavid Teigland 9937c70b896SBob Peterson static int databuf_lo_scan_elements(struct gfs2_jdesc *jd, u32 start, 99418ec7d5cSSteven Whitehouse struct gfs2_log_descriptor *ld, 99518ec7d5cSSteven Whitehouse __be64 *ptr, int pass) 99618ec7d5cSSteven Whitehouse { 997feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 9985c676f6dSSteven Whitehouse struct gfs2_glock *gl = ip->i_gl; 99918ec7d5cSSteven Whitehouse unsigned int blks = be32_to_cpu(ld->ld_data1); 100018ec7d5cSSteven Whitehouse struct buffer_head *bh_log, *bh_ip; 1001cd915493SSteven Whitehouse u64 blkno; 1002cd915493SSteven Whitehouse u64 esc; 100318ec7d5cSSteven Whitehouse int error = 0; 100418ec7d5cSSteven Whitehouse 100518ec7d5cSSteven Whitehouse if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_JDATA) 100618ec7d5cSSteven Whitehouse return 0; 100718ec7d5cSSteven Whitehouse 1008e1cb6be9SBob Peterson gfs2_replay_incr_blk(jd, &start); 1009e1cb6be9SBob Peterson for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { 101018ec7d5cSSteven Whitehouse blkno = be64_to_cpu(*ptr++); 101118ec7d5cSSteven Whitehouse esc = be64_to_cpu(*ptr++); 101218ec7d5cSSteven Whitehouse 1013a17d758bSBob Peterson jd->jd_found_blocks++; 101418ec7d5cSSteven Whitehouse 1015a17d758bSBob Peterson if (gfs2_revoke_check(jd, blkno, start)) 101618ec7d5cSSteven Whitehouse continue; 101718ec7d5cSSteven Whitehouse 101818ec7d5cSSteven Whitehouse error = gfs2_replay_read_block(jd, start, &bh_log); 101918ec7d5cSSteven Whitehouse if (error) 102018ec7d5cSSteven Whitehouse return error; 102118ec7d5cSSteven Whitehouse 102218ec7d5cSSteven Whitehouse bh_ip = gfs2_meta_new(gl, blkno); 102318ec7d5cSSteven Whitehouse memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); 102418ec7d5cSSteven Whitehouse 102518ec7d5cSSteven Whitehouse /* Unescape */ 102618ec7d5cSSteven Whitehouse if (esc) { 102718ec7d5cSSteven Whitehouse __be32 *eptr = (__be32 *)bh_ip->b_data; 102818ec7d5cSSteven Whitehouse *eptr = cpu_to_be32(GFS2_MAGIC); 102918ec7d5cSSteven Whitehouse } 103018ec7d5cSSteven Whitehouse mark_buffer_dirty(bh_ip); 103118ec7d5cSSteven Whitehouse 103218ec7d5cSSteven Whitehouse brelse(bh_log); 103318ec7d5cSSteven Whitehouse brelse(bh_ip); 103418ec7d5cSSteven Whitehouse 1035a17d758bSBob Peterson jd->jd_replayed_blocks++; 103618ec7d5cSSteven Whitehouse } 103718ec7d5cSSteven Whitehouse 103818ec7d5cSSteven Whitehouse return error; 103918ec7d5cSSteven Whitehouse } 104018ec7d5cSSteven Whitehouse 104118ec7d5cSSteven Whitehouse /* FIXME: sort out accounting for log blocks etc. */ 104218ec7d5cSSteven Whitehouse 104318ec7d5cSSteven Whitehouse static void databuf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 104418ec7d5cSSteven Whitehouse { 1045feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 1046feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 104718ec7d5cSSteven Whitehouse 104818ec7d5cSSteven Whitehouse if (error) { 10494a55752aSBob Peterson gfs2_inode_metasync(ip->i_gl); 105018ec7d5cSSteven Whitehouse return; 105118ec7d5cSSteven Whitehouse } 105218ec7d5cSSteven Whitehouse if (pass != 1) 105318ec7d5cSSteven Whitehouse return; 105418ec7d5cSSteven Whitehouse 105518ec7d5cSSteven Whitehouse /* data sync? */ 10564a55752aSBob Peterson gfs2_inode_metasync(ip->i_gl); 105718ec7d5cSSteven Whitehouse 105818ec7d5cSSteven Whitehouse fs_info(sdp, "jid=%u: Replayed %u of %u data blocks\n", 1059a17d758bSBob Peterson jd->jd_jid, jd->jd_replayed_blocks, jd->jd_found_blocks); 106018ec7d5cSSteven Whitehouse } 106118ec7d5cSSteven Whitehouse 106216ca9412SBenjamin Marzinski static void databuf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 106318ec7d5cSSteven Whitehouse { 1064d69a3c65SSteven Whitehouse struct list_head *head; 106518ec7d5cSSteven Whitehouse struct gfs2_bufdata *bd; 106618ec7d5cSSteven Whitehouse 1067d69a3c65SSteven Whitehouse if (tr == NULL) 106816ca9412SBenjamin Marzinski return; 106916ca9412SBenjamin Marzinski 1070d69a3c65SSteven Whitehouse head = &tr->tr_databuf; 107118ec7d5cSSteven Whitehouse while (!list_empty(head)) { 1072969183bcSAndreas Gruenbacher bd = list_first_entry(head, struct gfs2_bufdata, bd_list); 1073c0752aa7SBob Peterson list_del_init(&bd->bd_list); 107416ca9412SBenjamin Marzinski gfs2_unpin(sdp, bd->bd_bh, tr); 107518ec7d5cSSteven Whitehouse } 107618ec7d5cSSteven Whitehouse } 107718ec7d5cSSteven Whitehouse 107818ec7d5cSSteven Whitehouse 107932ac43f6SAndreas Gruenbacher static const struct gfs2_log_operations gfs2_buf_lops = { 1080b3b94faaSDavid Teigland .lo_before_commit = buf_lo_before_commit, 1081b3b94faaSDavid Teigland .lo_after_commit = buf_lo_after_commit, 1082b3b94faaSDavid Teigland .lo_before_scan = buf_lo_before_scan, 1083b3b94faaSDavid Teigland .lo_scan_elements = buf_lo_scan_elements, 1084b3b94faaSDavid Teigland .lo_after_scan = buf_lo_after_scan, 1085ea67eedbSSteven Whitehouse .lo_name = "buf", 1086b3b94faaSDavid Teigland }; 1087b3b94faaSDavid Teigland 108832ac43f6SAndreas Gruenbacher static const struct gfs2_log_operations gfs2_revoke_lops = { 1089b3b94faaSDavid Teigland .lo_before_commit = revoke_lo_before_commit, 1090f42ab085SSteven Whitehouse .lo_after_commit = revoke_lo_after_commit, 1091b3b94faaSDavid Teigland .lo_before_scan = revoke_lo_before_scan, 1092b3b94faaSDavid Teigland .lo_scan_elements = revoke_lo_scan_elements, 1093b3b94faaSDavid Teigland .lo_after_scan = revoke_lo_after_scan, 1094ea67eedbSSteven Whitehouse .lo_name = "revoke", 1095b3b94faaSDavid Teigland }; 1096b3b94faaSDavid Teigland 109732ac43f6SAndreas Gruenbacher static const struct gfs2_log_operations gfs2_databuf_lops = { 1098b3b94faaSDavid Teigland .lo_before_commit = databuf_lo_before_commit, 109918ec7d5cSSteven Whitehouse .lo_after_commit = databuf_lo_after_commit, 110018ec7d5cSSteven Whitehouse .lo_scan_elements = databuf_lo_scan_elements, 110118ec7d5cSSteven Whitehouse .lo_after_scan = databuf_lo_after_scan, 1102ea67eedbSSteven Whitehouse .lo_name = "databuf", 1103b3b94faaSDavid Teigland }; 1104b3b94faaSDavid Teigland 1105b09e593dSSteven Whitehouse const struct gfs2_log_operations *gfs2_log_ops[] = { 1106b3b94faaSDavid Teigland &gfs2_databuf_lops, 110716615be1SSteven Whitehouse &gfs2_buf_lops, 110816615be1SSteven Whitehouse &gfs2_revoke_lops, 1109ea67eedbSSteven Whitehouse NULL, 1110b3b94faaSDavid Teigland }; 1111b3b94faaSDavid Teigland 1112