1b3b94faaSDavid Teigland /* 2b3b94faaSDavid Teigland * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. 33a8a9a10SSteven Whitehouse * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. 4b3b94faaSDavid Teigland * 5b3b94faaSDavid Teigland * This copyrighted material is made available to anyone wishing to use, 6b3b94faaSDavid Teigland * modify, copy, or redistribute it subject to the terms and conditions 7e9fc2aa0SSteven Whitehouse * of the GNU General Public License version 2. 8b3b94faaSDavid Teigland */ 9b3b94faaSDavid Teigland 10b3b94faaSDavid Teigland #include <linux/sched.h> 11b3b94faaSDavid Teigland #include <linux/slab.h> 12b3b94faaSDavid Teigland #include <linux/spinlock.h> 13b3b94faaSDavid Teigland #include <linux/completion.h> 14b3b94faaSDavid Teigland #include <linux/buffer_head.h> 1575ca61c1SSteven Whitehouse #include <linux/mempool.h> 165c676f6dSSteven Whitehouse #include <linux/gfs2_ondisk.h> 17c969f58cSSteven Whitehouse #include <linux/bio.h> 18c969f58cSSteven Whitehouse #include <linux/fs.h> 197f63257dSBenjamin Marzinski #include <linux/list_sort.h> 202a5f14f2SAbhi Das #include <linux/blkdev.h> 21b3b94faaSDavid Teigland 222a5f14f2SAbhi Das #include "bmap.h" 23c1696fb8SBob Peterson #include "dir.h" 24b3b94faaSDavid Teigland #include "gfs2.h" 255c676f6dSSteven Whitehouse #include "incore.h" 262332c443SRobert Peterson #include "inode.h" 27b3b94faaSDavid Teigland #include "glock.h" 28b3b94faaSDavid Teigland #include "log.h" 29b3b94faaSDavid Teigland #include "lops.h" 30b3b94faaSDavid Teigland #include "meta_io.h" 31b3b94faaSDavid Teigland #include "recovery.h" 32b3b94faaSDavid Teigland #include "rgrp.h" 33b3b94faaSDavid Teigland #include "trans.h" 345c676f6dSSteven Whitehouse #include "util.h" 3563997775SSteven Whitehouse #include "trace_gfs2.h" 36b3b94faaSDavid Teigland 379b9107a5SSteven Whitehouse /** 389b9107a5SSteven Whitehouse * gfs2_pin - Pin a buffer in memory 399b9107a5SSteven Whitehouse * @sdp: The superblock 409b9107a5SSteven Whitehouse * @bh: The buffer to be pinned 419b9107a5SSteven Whitehouse * 429b9107a5SSteven Whitehouse * The log lock must be held when calling this function 439b9107a5SSteven Whitehouse */ 44767f433fSSteven Whitehouse void gfs2_pin(struct gfs2_sbd *sdp, struct buffer_head *bh) 459b9107a5SSteven Whitehouse { 469b9107a5SSteven Whitehouse struct gfs2_bufdata *bd; 479b9107a5SSteven Whitehouse 4829687a2aSSteven Whitehouse BUG_ON(!current->journal_info); 499b9107a5SSteven Whitehouse 509b9107a5SSteven Whitehouse clear_buffer_dirty(bh); 519b9107a5SSteven Whitehouse if (test_set_buffer_pinned(bh)) 529b9107a5SSteven Whitehouse gfs2_assert_withdraw(sdp, 0); 539b9107a5SSteven Whitehouse if (!buffer_uptodate(bh)) 549e1a9ecdSAndreas Gruenbacher gfs2_io_error_bh_wd(sdp, bh); 559b9107a5SSteven Whitehouse bd = bh->b_private; 569b9107a5SSteven Whitehouse /* If this buffer is in the AIL and it has already been written 579b9107a5SSteven Whitehouse * to in-place disk block, remove it from the AIL. 589b9107a5SSteven Whitehouse */ 59c618e87aSSteven Whitehouse spin_lock(&sdp->sd_ail_lock); 6016ca9412SBenjamin Marzinski if (bd->bd_tr) 6116ca9412SBenjamin Marzinski list_move(&bd->bd_ail_st_list, &bd->bd_tr->tr_ail2_list); 62c618e87aSSteven Whitehouse spin_unlock(&sdp->sd_ail_lock); 639b9107a5SSteven Whitehouse get_bh(bh); 645e687eacSBenjamin Marzinski atomic_inc(&sdp->sd_log_pinned); 6563997775SSteven Whitehouse trace_gfs2_pin(bd, 1); 669b9107a5SSteven Whitehouse } 679b9107a5SSteven Whitehouse 687c9ca621SBob Peterson static bool buffer_is_rgrp(const struct gfs2_bufdata *bd) 697c9ca621SBob Peterson { 707c9ca621SBob Peterson return bd->bd_gl->gl_name.ln_type == LM_TYPE_RGRP; 717c9ca621SBob Peterson } 727c9ca621SBob Peterson 737c9ca621SBob Peterson static void maybe_release_space(struct gfs2_bufdata *bd) 747c9ca621SBob Peterson { 757c9ca621SBob Peterson struct gfs2_glock *gl = bd->bd_gl; 7615562c43SBob Peterson struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; 776f6597baSAndreas Gruenbacher struct gfs2_rgrpd *rgd = gfs2_glock2rgrp(gl); 787c9ca621SBob Peterson unsigned int index = bd->bd_bh->b_blocknr - gl->gl_name.ln_number; 797c9ca621SBob Peterson struct gfs2_bitmap *bi = rgd->rd_bits + index; 807c9ca621SBob Peterson 815a7c6690SFabian Frederick if (bi->bi_clone == NULL) 827c9ca621SBob Peterson return; 837c9ca621SBob Peterson if (sdp->sd_args.ar_discard) 8466fc061bSSteven Whitehouse gfs2_rgrp_send_discards(sdp, rgd->rd_data0, bd->bd_bh, bi, 1, NULL); 857c9ca621SBob Peterson memcpy(bi->bi_clone + bi->bi_offset, 86281b4952SAndreas Gruenbacher bd->bd_bh->b_data + bi->bi_offset, bi->bi_bytes); 877c9ca621SBob Peterson clear_bit(GBF_FULL, &bi->bi_flags); 887c9ca621SBob Peterson rgd->rd_free_clone = rgd->rd_free; 895ea5050cSBob Peterson rgd->rd_extfail_pt = rgd->rd_free; 907c9ca621SBob Peterson } 917c9ca621SBob Peterson 929b9107a5SSteven Whitehouse /** 939b9107a5SSteven Whitehouse * gfs2_unpin - Unpin a buffer 949b9107a5SSteven Whitehouse * @sdp: the filesystem the buffer belongs to 959b9107a5SSteven Whitehouse * @bh: The buffer to unpin 969b9107a5SSteven Whitehouse * @ai: 9729687a2aSSteven Whitehouse * @flags: The inode dirty flags 989b9107a5SSteven Whitehouse * 999b9107a5SSteven Whitehouse */ 1009b9107a5SSteven Whitehouse 1019b9107a5SSteven Whitehouse static void gfs2_unpin(struct gfs2_sbd *sdp, struct buffer_head *bh, 10216ca9412SBenjamin Marzinski struct gfs2_trans *tr) 1039b9107a5SSteven Whitehouse { 1049b9107a5SSteven Whitehouse struct gfs2_bufdata *bd = bh->b_private; 1059b9107a5SSteven Whitehouse 10629687a2aSSteven Whitehouse BUG_ON(!buffer_uptodate(bh)); 10729687a2aSSteven Whitehouse BUG_ON(!buffer_pinned(bh)); 1089b9107a5SSteven Whitehouse 1099b9107a5SSteven Whitehouse lock_buffer(bh); 1109b9107a5SSteven Whitehouse mark_buffer_dirty(bh); 1119b9107a5SSteven Whitehouse clear_buffer_pinned(bh); 1129b9107a5SSteven Whitehouse 1137c9ca621SBob Peterson if (buffer_is_rgrp(bd)) 1147c9ca621SBob Peterson maybe_release_space(bd); 1157c9ca621SBob Peterson 116d6a079e8SDave Chinner spin_lock(&sdp->sd_ail_lock); 11716ca9412SBenjamin Marzinski if (bd->bd_tr) { 1189b9107a5SSteven Whitehouse list_del(&bd->bd_ail_st_list); 1199b9107a5SSteven Whitehouse brelse(bh); 1209b9107a5SSteven Whitehouse } else { 1219b9107a5SSteven Whitehouse struct gfs2_glock *gl = bd->bd_gl; 1229b9107a5SSteven Whitehouse list_add(&bd->bd_ail_gl_list, &gl->gl_ail_list); 1239b9107a5SSteven Whitehouse atomic_inc(&gl->gl_ail_count); 1249b9107a5SSteven Whitehouse } 12516ca9412SBenjamin Marzinski bd->bd_tr = tr; 12616ca9412SBenjamin Marzinski list_add(&bd->bd_ail_st_list, &tr->tr_ail1_list); 127d6a079e8SDave Chinner spin_unlock(&sdp->sd_ail_lock); 128d6a079e8SDave Chinner 12929687a2aSSteven Whitehouse clear_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags); 13063997775SSteven Whitehouse trace_gfs2_pin(bd, 0); 1319b9107a5SSteven Whitehouse unlock_buffer(bh); 1325e687eacSBenjamin Marzinski atomic_dec(&sdp->sd_log_pinned); 1339b9107a5SSteven Whitehouse } 1349b9107a5SSteven Whitehouse 135e8c92ed7SSteven Whitehouse static void gfs2_log_incr_head(struct gfs2_sbd *sdp) 13616615be1SSteven Whitehouse { 137e8c92ed7SSteven Whitehouse BUG_ON((sdp->sd_log_flush_head == sdp->sd_log_tail) && 138e8c92ed7SSteven Whitehouse (sdp->sd_log_flush_head != sdp->sd_log_head)); 139e8c92ed7SSteven Whitehouse 140722f6f62SBob Peterson if (++sdp->sd_log_flush_head == sdp->sd_jdesc->jd_blocks) 141e8c92ed7SSteven Whitehouse sdp->sd_log_flush_head = 0; 14216615be1SSteven Whitehouse } 14316615be1SSteven Whitehouse 144c1696fb8SBob Peterson u64 gfs2_log_bmap(struct gfs2_sbd *sdp) 14516615be1SSteven Whitehouse { 146e8c92ed7SSteven Whitehouse unsigned int lbn = sdp->sd_log_flush_head; 147e8c92ed7SSteven Whitehouse struct gfs2_journal_extent *je; 148e8c92ed7SSteven Whitehouse u64 block; 14916615be1SSteven Whitehouse 150b50f227bSSteven Whitehouse list_for_each_entry(je, &sdp->sd_jdesc->extent_list, list) { 151b50f227bSSteven Whitehouse if ((lbn >= je->lblock) && (lbn < (je->lblock + je->blocks))) { 152e8c92ed7SSteven Whitehouse block = je->dblock + lbn - je->lblock; 15347ac5537SSteven Whitehouse gfs2_log_incr_head(sdp); 154e8c92ed7SSteven Whitehouse return block; 155e8c92ed7SSteven Whitehouse } 156e8c92ed7SSteven Whitehouse } 15747ac5537SSteven Whitehouse 158e8c92ed7SSteven Whitehouse return -1; 15947ac5537SSteven Whitehouse } 16047ac5537SSteven Whitehouse 16147ac5537SSteven Whitehouse /** 162e8c92ed7SSteven Whitehouse * gfs2_end_log_write_bh - end log write of pagecache data with buffers 163e8c92ed7SSteven Whitehouse * @sdp: The superblock 164e8c92ed7SSteven Whitehouse * @bvec: The bio_vec 165e8c92ed7SSteven Whitehouse * @error: The i/o status 166e8c92ed7SSteven Whitehouse * 1674519eaadSBob Peterson * This finds the relevant buffers and unlocks them and sets the 168e8c92ed7SSteven Whitehouse * error flag according to the status of the i/o request. This is 169e8c92ed7SSteven Whitehouse * used when the log is writing data which has an in-place version 170e8c92ed7SSteven Whitehouse * that is pinned in the pagecache. 171e8c92ed7SSteven Whitehouse */ 172e8c92ed7SSteven Whitehouse 1736dc4f100SMing Lei static void gfs2_end_log_write_bh(struct gfs2_sbd *sdp, 1746dc4f100SMing Lei struct bio_vec *bvec, 1754e4cbee9SChristoph Hellwig blk_status_t error) 176e8c92ed7SSteven Whitehouse { 177e8c92ed7SSteven Whitehouse struct buffer_head *bh, *next; 178e8c92ed7SSteven Whitehouse struct page *page = bvec->bv_page; 179e8c92ed7SSteven Whitehouse unsigned size; 180e8c92ed7SSteven Whitehouse 181e8c92ed7SSteven Whitehouse bh = page_buffers(page); 182e8c92ed7SSteven Whitehouse size = bvec->bv_len; 183e8c92ed7SSteven Whitehouse while (bh_offset(bh) < bvec->bv_offset) 184e8c92ed7SSteven Whitehouse bh = bh->b_this_page; 185e8c92ed7SSteven Whitehouse do { 186e8c92ed7SSteven Whitehouse if (error) 18787354e5dSJeff Layton mark_buffer_write_io_error(bh); 188e8c92ed7SSteven Whitehouse unlock_buffer(bh); 189e8c92ed7SSteven Whitehouse next = bh->b_this_page; 190e8c92ed7SSteven Whitehouse size -= bh->b_size; 191e8c92ed7SSteven Whitehouse brelse(bh); 192e8c92ed7SSteven Whitehouse bh = next; 193e8c92ed7SSteven Whitehouse } while(bh && size); 194e8c92ed7SSteven Whitehouse } 195e8c92ed7SSteven Whitehouse 196e8c92ed7SSteven Whitehouse /** 197e8c92ed7SSteven Whitehouse * gfs2_end_log_write - end of i/o to the log 198e8c92ed7SSteven Whitehouse * @bio: The bio 199e8c92ed7SSteven Whitehouse * 200e8c92ed7SSteven Whitehouse * Each bio_vec contains either data from the pagecache or data 201e8c92ed7SSteven Whitehouse * relating to the log itself. Here we iterate over the bio_vec 202e8c92ed7SSteven Whitehouse * array, processing both kinds of data. 20347ac5537SSteven Whitehouse * 20447ac5537SSteven Whitehouse */ 20547ac5537SSteven Whitehouse 2064246a0b6SChristoph Hellwig static void gfs2_end_log_write(struct bio *bio) 20747ac5537SSteven Whitehouse { 208e8c92ed7SSteven Whitehouse struct gfs2_sbd *sdp = bio->bi_private; 209e8c92ed7SSteven Whitehouse struct bio_vec *bvec; 210e8c92ed7SSteven Whitehouse struct page *page; 211e8c92ed7SSteven Whitehouse int i; 2126dc4f100SMing Lei struct bvec_iter_all iter_all; 21347ac5537SSteven Whitehouse 214942b0cddSBob Peterson if (bio->bi_status) { 215942b0cddSBob Peterson fs_err(sdp, "Error %d writing to journal, jid=%u\n", 216942b0cddSBob Peterson bio->bi_status, sdp->sd_jdesc->jd_jid); 217942b0cddSBob Peterson wake_up(&sdp->sd_logd_waitq); 218942b0cddSBob Peterson } 219e8c92ed7SSteven Whitehouse 2206dc4f100SMing Lei bio_for_each_segment_all(bvec, bio, i, iter_all) { 221e8c92ed7SSteven Whitehouse page = bvec->bv_page; 222e8c92ed7SSteven Whitehouse if (page_has_buffers(page)) 2234e4cbee9SChristoph Hellwig gfs2_end_log_write_bh(sdp, bvec, bio->bi_status); 224e8c92ed7SSteven Whitehouse else 225e8c92ed7SSteven Whitehouse mempool_free(page, gfs2_page_pool); 226e8c92ed7SSteven Whitehouse } 227e8c92ed7SSteven Whitehouse 228e8c92ed7SSteven Whitehouse bio_put(bio); 22947ac5537SSteven Whitehouse if (atomic_dec_and_test(&sdp->sd_log_in_flight)) 23047ac5537SSteven Whitehouse wake_up(&sdp->sd_log_flush_wait); 23147ac5537SSteven Whitehouse } 23247ac5537SSteven Whitehouse 23347ac5537SSteven Whitehouse /** 2345b846095SAbhi Das * gfs2_log_submit_bio - Submit any pending log bio 2355b846095SAbhi Das * @biop: Address of the bio pointer 2362a5f14f2SAbhi Das * @opf: REQ_OP | op_flags 237e8c92ed7SSteven Whitehouse * 238e8c92ed7SSteven Whitehouse * Submit any pending part-built or full bio to the block device. If 239e8c92ed7SSteven Whitehouse * there is no pending bio, then this is a no-op. 240e8c92ed7SSteven Whitehouse */ 241e8c92ed7SSteven Whitehouse 2422a5f14f2SAbhi Das void gfs2_log_submit_bio(struct bio **biop, int opf) 243e8c92ed7SSteven Whitehouse { 2445b846095SAbhi Das struct bio *bio = *biop; 2455b846095SAbhi Das if (bio) { 2465b846095SAbhi Das struct gfs2_sbd *sdp = bio->bi_private; 247e8c92ed7SSteven Whitehouse atomic_inc(&sdp->sd_log_in_flight); 2482a5f14f2SAbhi Das bio->bi_opf = opf; 2495b846095SAbhi Das submit_bio(bio); 2505b846095SAbhi Das *biop = NULL; 251e8c92ed7SSteven Whitehouse } 252e8c92ed7SSteven Whitehouse } 253e8c92ed7SSteven Whitehouse 254e8c92ed7SSteven Whitehouse /** 2555b846095SAbhi Das * gfs2_log_alloc_bio - Allocate a bio 256e8c92ed7SSteven Whitehouse * @sdp: The super block 2575b846095SAbhi Das * @blkno: The device block number we want to write to 2585b846095SAbhi Das * @end_io: The bi_end_io callback 259e8c92ed7SSteven Whitehouse * 2605b846095SAbhi Das * Allocate a new bio, initialize it with the given parameters and return it. 261e8c92ed7SSteven Whitehouse * 2625b846095SAbhi Das * Returns: The newly allocated bio 263e8c92ed7SSteven Whitehouse */ 264e8c92ed7SSteven Whitehouse 2655b846095SAbhi Das static struct bio *gfs2_log_alloc_bio(struct gfs2_sbd *sdp, u64 blkno, 2665b846095SAbhi Das bio_end_io_t *end_io) 267e8c92ed7SSteven Whitehouse { 268e8c92ed7SSteven Whitehouse struct super_block *sb = sdp->sd_vfs; 2695b846095SAbhi Das struct bio *bio = bio_alloc(GFP_NOIO, BIO_MAX_PAGES); 270e8c92ed7SSteven Whitehouse 2714f024f37SKent Overstreet bio->bi_iter.bi_sector = blkno * (sb->s_blocksize >> 9); 27274d46992SChristoph Hellwig bio_set_dev(bio, sb->s_bdev); 2735b846095SAbhi Das bio->bi_end_io = end_io; 274e8c92ed7SSteven Whitehouse bio->bi_private = sdp; 275e8c92ed7SSteven Whitehouse 276e8c92ed7SSteven Whitehouse return bio; 277e8c92ed7SSteven Whitehouse } 278e8c92ed7SSteven Whitehouse 279e8c92ed7SSteven Whitehouse /** 280e8c92ed7SSteven Whitehouse * gfs2_log_get_bio - Get cached log bio, or allocate a new one 281e8c92ed7SSteven Whitehouse * @sdp: The super block 282e8c92ed7SSteven Whitehouse * @blkno: The device block number we want to write to 2835b846095SAbhi Das * @bio: The bio to get or allocate 2845b846095SAbhi Das * @op: REQ_OP 2855b846095SAbhi Das * @end_io: The bi_end_io callback 2865b846095SAbhi Das * @flush: Always flush the current bio and allocate a new one? 287e8c92ed7SSteven Whitehouse * 288e8c92ed7SSteven Whitehouse * If there is a cached bio, then if the next block number is sequential 289e8c92ed7SSteven Whitehouse * with the previous one, return it, otherwise flush the bio to the 2905b846095SAbhi Das * device. If there is no cached bio, or we just flushed it, then 291e8c92ed7SSteven Whitehouse * allocate a new one. 292e8c92ed7SSteven Whitehouse * 293e8c92ed7SSteven Whitehouse * Returns: The bio to use for log writes 294e8c92ed7SSteven Whitehouse */ 295e8c92ed7SSteven Whitehouse 2965b846095SAbhi Das static struct bio *gfs2_log_get_bio(struct gfs2_sbd *sdp, u64 blkno, 2975b846095SAbhi Das struct bio **biop, int op, 2985b846095SAbhi Das bio_end_io_t *end_io, bool flush) 299e8c92ed7SSteven Whitehouse { 3005b846095SAbhi Das struct bio *bio = *biop; 301e8c92ed7SSteven Whitehouse 302e8c92ed7SSteven Whitehouse if (bio) { 3035b846095SAbhi Das u64 nblk; 3045b846095SAbhi Das 305f73a1c7dSKent Overstreet nblk = bio_end_sector(bio); 306e8c92ed7SSteven Whitehouse nblk >>= sdp->sd_fsb2bb_shift; 3075b846095SAbhi Das if (blkno == nblk && !flush) 308e8c92ed7SSteven Whitehouse return bio; 3092a5f14f2SAbhi Das gfs2_log_submit_bio(biop, op); 310e8c92ed7SSteven Whitehouse } 311e8c92ed7SSteven Whitehouse 3125b846095SAbhi Das *biop = gfs2_log_alloc_bio(sdp, blkno, end_io); 3135b846095SAbhi Das return *biop; 314e8c92ed7SSteven Whitehouse } 315e8c92ed7SSteven Whitehouse 316e8c92ed7SSteven Whitehouse /** 317e8c92ed7SSteven Whitehouse * gfs2_log_write - write to log 31847ac5537SSteven Whitehouse * @sdp: the filesystem 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 329c1696fb8SBob Peterson void gfs2_log_write(struct gfs2_sbd *sdp, struct page *page, 330c1696fb8SBob Peterson unsigned size, unsigned offset, u64 blkno) 33147ac5537SSteven Whitehouse { 332e8c92ed7SSteven Whitehouse struct bio *bio; 333e8c92ed7SSteven Whitehouse int ret; 33447ac5537SSteven Whitehouse 3355b846095SAbhi Das bio = gfs2_log_get_bio(sdp, blkno, &sdp->sd_log_bio, REQ_OP_WRITE, 3365b846095SAbhi Das gfs2_end_log_write, false); 337e8c92ed7SSteven Whitehouse ret = bio_add_page(bio, page, size, offset); 338e8c92ed7SSteven Whitehouse if (ret == 0) { 3395b846095SAbhi Das bio = gfs2_log_get_bio(sdp, blkno, &sdp->sd_log_bio, 3405b846095SAbhi Das REQ_OP_WRITE, gfs2_end_log_write, true); 341e8c92ed7SSteven Whitehouse ret = bio_add_page(bio, page, size, offset); 342e8c92ed7SSteven Whitehouse WARN_ON(ret == 0); 343e8c92ed7SSteven Whitehouse } 34447ac5537SSteven Whitehouse } 34516615be1SSteven Whitehouse 346e8c92ed7SSteven Whitehouse /** 347e8c92ed7SSteven Whitehouse * gfs2_log_write_bh - write a buffer's content to the log 348e8c92ed7SSteven Whitehouse * @sdp: The super block 349e8c92ed7SSteven Whitehouse * @bh: The buffer pointing to the in-place location 350e8c92ed7SSteven Whitehouse * 351e8c92ed7SSteven Whitehouse * This writes the content of the buffer to the next available location 352e8c92ed7SSteven Whitehouse * in the log. The buffer will be unlocked once the i/o to the log has 353e8c92ed7SSteven Whitehouse * completed. 354e8c92ed7SSteven Whitehouse */ 355e8c92ed7SSteven Whitehouse 356e8c92ed7SSteven Whitehouse static void gfs2_log_write_bh(struct gfs2_sbd *sdp, struct buffer_head *bh) 35716615be1SSteven Whitehouse { 358c1696fb8SBob Peterson gfs2_log_write(sdp, bh->b_page, bh->b_size, bh_offset(bh), 359c1696fb8SBob Peterson gfs2_log_bmap(sdp)); 360e8c92ed7SSteven Whitehouse } 361e8c92ed7SSteven Whitehouse 362e8c92ed7SSteven Whitehouse /** 363e8c92ed7SSteven Whitehouse * gfs2_log_write_page - write one block stored in a page, into the log 364e8c92ed7SSteven Whitehouse * @sdp: The superblock 365e8c92ed7SSteven Whitehouse * @page: The struct page 366e8c92ed7SSteven Whitehouse * 367e8c92ed7SSteven Whitehouse * This writes the first block-sized part of the page into the log. Note 368e8c92ed7SSteven Whitehouse * that the page must have been allocated from the gfs2_page_pool mempool 369e8c92ed7SSteven Whitehouse * and that after this has been called, ownership has been transferred and 370e8c92ed7SSteven Whitehouse * the page may be freed at any time. 371e8c92ed7SSteven Whitehouse */ 372e8c92ed7SSteven Whitehouse 373e8c92ed7SSteven Whitehouse void gfs2_log_write_page(struct gfs2_sbd *sdp, struct page *page) 374e8c92ed7SSteven Whitehouse { 375e8c92ed7SSteven Whitehouse struct super_block *sb = sdp->sd_vfs; 376c1696fb8SBob Peterson gfs2_log_write(sdp, page, sb->s_blocksize, 0, 377c1696fb8SBob Peterson gfs2_log_bmap(sdp)); 378e8c92ed7SSteven Whitehouse } 379e8c92ed7SSteven Whitehouse 3802a5f14f2SAbhi Das /** 3812a5f14f2SAbhi Das * gfs2_end_log_read - end I/O callback for reads from the log 3822a5f14f2SAbhi Das * @bio: The bio 3832a5f14f2SAbhi Das * 3842a5f14f2SAbhi Das * Simply unlock the pages in the bio. The main thread will wait on them and 3852a5f14f2SAbhi Das * process them in order as necessary. 3862a5f14f2SAbhi Das */ 3872a5f14f2SAbhi Das 3882a5f14f2SAbhi Das static void gfs2_end_log_read(struct bio *bio) 3892a5f14f2SAbhi Das { 3902a5f14f2SAbhi Das struct page *page; 3912a5f14f2SAbhi Das struct bio_vec *bvec; 3922a5f14f2SAbhi Das int i; 3936dc4f100SMing Lei struct bvec_iter_all iter_all; 3942a5f14f2SAbhi Das 3956dc4f100SMing Lei bio_for_each_segment_all(bvec, bio, i, iter_all) { 3962a5f14f2SAbhi Das page = bvec->bv_page; 3972a5f14f2SAbhi Das if (bio->bi_status) { 3982a5f14f2SAbhi Das int err = blk_status_to_errno(bio->bi_status); 3992a5f14f2SAbhi Das 4002a5f14f2SAbhi Das SetPageError(page); 4012a5f14f2SAbhi Das mapping_set_error(page->mapping, err); 4022a5f14f2SAbhi Das } 4032a5f14f2SAbhi Das unlock_page(page); 4042a5f14f2SAbhi Das } 4052a5f14f2SAbhi Das 4062a5f14f2SAbhi Das bio_put(bio); 4072a5f14f2SAbhi Das } 4082a5f14f2SAbhi Das 4092a5f14f2SAbhi Das /** 4102a5f14f2SAbhi Das * gfs2_jhead_pg_srch - Look for the journal head in a given page. 4112a5f14f2SAbhi Das * @jd: The journal descriptor 4122a5f14f2SAbhi Das * @page: The page to look in 4132a5f14f2SAbhi Das * 4142a5f14f2SAbhi Das * Returns: 1 if found, 0 otherwise. 4152a5f14f2SAbhi Das */ 4162a5f14f2SAbhi Das 4172a5f14f2SAbhi Das static bool gfs2_jhead_pg_srch(struct gfs2_jdesc *jd, 4182a5f14f2SAbhi Das struct gfs2_log_header_host *head, 4192a5f14f2SAbhi Das struct page *page) 4202a5f14f2SAbhi Das { 4212a5f14f2SAbhi Das struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 4222a5f14f2SAbhi Das struct gfs2_log_header_host uninitialized_var(lh); 4232a5f14f2SAbhi Das void *kaddr = kmap_atomic(page); 4242a5f14f2SAbhi Das unsigned int offset; 4252a5f14f2SAbhi Das bool ret = false; 4262a5f14f2SAbhi Das 4272a5f14f2SAbhi Das for (offset = 0; offset < PAGE_SIZE; offset += sdp->sd_sb.sb_bsize) { 4282a5f14f2SAbhi Das if (!__get_log_header(sdp, kaddr + offset, 0, &lh)) { 4292a5f14f2SAbhi Das if (lh.lh_sequence > head->lh_sequence) 4302a5f14f2SAbhi Das *head = lh; 4312a5f14f2SAbhi Das else { 4322a5f14f2SAbhi Das ret = true; 4332a5f14f2SAbhi Das break; 4342a5f14f2SAbhi Das } 4352a5f14f2SAbhi Das } 4362a5f14f2SAbhi Das } 4372a5f14f2SAbhi Das kunmap_atomic(kaddr); 4382a5f14f2SAbhi Das return ret; 4392a5f14f2SAbhi Das } 4402a5f14f2SAbhi Das 4412a5f14f2SAbhi Das /** 4422a5f14f2SAbhi Das * gfs2_jhead_process_page - Search/cleanup a page 4432a5f14f2SAbhi Das * @jd: The journal descriptor 4442a5f14f2SAbhi Das * @index: Index of the page to look into 4452a5f14f2SAbhi Das * @done: If set, perform only cleanup, else search and set if found. 4462a5f14f2SAbhi Das * 4472a5f14f2SAbhi Das * Find the page with 'index' in the journal's mapping. Search the page for 4482a5f14f2SAbhi Das * the journal head if requested (cleanup == false). Release refs on the 4492a5f14f2SAbhi Das * page so the page cache can reclaim it (put_page() twice). We grabbed a 4502a5f14f2SAbhi Das * reference on this page two times, first when we did a find_or_create_page() 4512a5f14f2SAbhi Das * to obtain the page to add it to the bio and second when we do a 4522a5f14f2SAbhi Das * find_get_page() here to get the page to wait on while I/O on it is being 4532a5f14f2SAbhi Das * completed. 4542a5f14f2SAbhi Das * This function is also used to free up a page we might've grabbed but not 4552a5f14f2SAbhi Das * used. Maybe we added it to a bio, but not submitted it for I/O. Or we 4562a5f14f2SAbhi Das * submitted the I/O, but we already found the jhead so we only need to drop 4572a5f14f2SAbhi Das * our references to the page. 4582a5f14f2SAbhi Das */ 4592a5f14f2SAbhi Das 4602a5f14f2SAbhi Das static void gfs2_jhead_process_page(struct gfs2_jdesc *jd, unsigned long index, 4612a5f14f2SAbhi Das struct gfs2_log_header_host *head, 4622a5f14f2SAbhi Das bool *done) 4632a5f14f2SAbhi Das { 4642a5f14f2SAbhi Das struct page *page; 4652a5f14f2SAbhi Das 4662a5f14f2SAbhi Das page = find_get_page(jd->jd_inode->i_mapping, index); 4672a5f14f2SAbhi Das wait_on_page_locked(page); 4682a5f14f2SAbhi Das 4692a5f14f2SAbhi Das if (PageError(page)) 4702a5f14f2SAbhi Das *done = true; 4712a5f14f2SAbhi Das 4722a5f14f2SAbhi Das if (!*done) 4732a5f14f2SAbhi Das *done = gfs2_jhead_pg_srch(jd, head, page); 4742a5f14f2SAbhi Das 4752a5f14f2SAbhi Das put_page(page); /* Once for find_get_page */ 4762a5f14f2SAbhi Das put_page(page); /* Once more for find_or_create_page */ 4772a5f14f2SAbhi Das } 4782a5f14f2SAbhi Das 4792a5f14f2SAbhi Das /** 4802a5f14f2SAbhi Das * gfs2_find_jhead - find the head of a log 4812a5f14f2SAbhi Das * @jd: The journal descriptor 4822a5f14f2SAbhi Das * @head: The log descriptor for the head of the log is returned here 4832a5f14f2SAbhi Das * 4842a5f14f2SAbhi Das * Do a search of a journal by reading it in large chunks using bios and find 4852a5f14f2SAbhi Das * the valid log entry with the highest sequence number. (i.e. the log head) 4862a5f14f2SAbhi Das * 4872a5f14f2SAbhi Das * Returns: 0 on success, errno otherwise 4882a5f14f2SAbhi Das */ 4892a5f14f2SAbhi Das 4902a5f14f2SAbhi Das int gfs2_find_jhead(struct gfs2_jdesc *jd, struct gfs2_log_header_host *head) 4912a5f14f2SAbhi Das { 4922a5f14f2SAbhi Das struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 4932a5f14f2SAbhi Das struct address_space *mapping = jd->jd_inode->i_mapping; 4942a5f14f2SAbhi Das struct gfs2_journal_extent *je; 4952a5f14f2SAbhi Das u32 block, read_idx = 0, submit_idx = 0, index = 0; 4962a5f14f2SAbhi Das int shift = PAGE_SHIFT - sdp->sd_sb.sb_bsize_shift; 4972a5f14f2SAbhi Das int blocks_per_page = 1 << shift, sz, ret = 0; 4982a5f14f2SAbhi Das struct bio *bio = NULL; 4992a5f14f2SAbhi Das struct page *page; 5002a5f14f2SAbhi Das bool done = false; 5012a5f14f2SAbhi Das errseq_t since; 5022a5f14f2SAbhi Das 5032a5f14f2SAbhi Das memset(head, 0, sizeof(*head)); 5042a5f14f2SAbhi Das if (list_empty(&jd->extent_list)) 5052a5f14f2SAbhi Das gfs2_map_journal_extents(sdp, jd); 5062a5f14f2SAbhi Das 5072a5f14f2SAbhi Das since = filemap_sample_wb_err(mapping); 5082a5f14f2SAbhi Das list_for_each_entry(je, &jd->extent_list, list) { 5092a5f14f2SAbhi Das for (block = 0; block < je->blocks; block += blocks_per_page) { 5102a5f14f2SAbhi Das index = (je->lblock + block) >> shift; 5112a5f14f2SAbhi Das 5122a5f14f2SAbhi Das page = find_or_create_page(mapping, index, GFP_NOFS); 5132a5f14f2SAbhi Das if (!page) { 5142a5f14f2SAbhi Das ret = -ENOMEM; 5152a5f14f2SAbhi Das done = true; 5162a5f14f2SAbhi Das goto out; 5172a5f14f2SAbhi Das } 5182a5f14f2SAbhi Das 5192a5f14f2SAbhi Das if (bio) { 5202a5f14f2SAbhi Das sz = bio_add_page(bio, page, PAGE_SIZE, 0); 5212a5f14f2SAbhi Das if (sz == PAGE_SIZE) 5222a5f14f2SAbhi Das goto page_added; 5232a5f14f2SAbhi Das submit_idx = index; 5242a5f14f2SAbhi Das submit_bio(bio); 5252a5f14f2SAbhi Das bio = NULL; 5262a5f14f2SAbhi Das } 5272a5f14f2SAbhi Das 5282a5f14f2SAbhi Das bio = gfs2_log_alloc_bio(sdp, 5292a5f14f2SAbhi Das je->dblock + (index << shift), 5302a5f14f2SAbhi Das gfs2_end_log_read); 5312a5f14f2SAbhi Das bio->bi_opf = REQ_OP_READ; 5322a5f14f2SAbhi Das sz = bio_add_page(bio, page, PAGE_SIZE, 0); 5332a5f14f2SAbhi Das gfs2_assert_warn(sdp, sz == PAGE_SIZE); 5342a5f14f2SAbhi Das 5352a5f14f2SAbhi Das page_added: 5362a5f14f2SAbhi Das if (submit_idx <= read_idx + BIO_MAX_PAGES) { 5372a5f14f2SAbhi Das /* Keep at least one bio in flight */ 5382a5f14f2SAbhi Das continue; 5392a5f14f2SAbhi Das } 5402a5f14f2SAbhi Das 5412a5f14f2SAbhi Das gfs2_jhead_process_page(jd, read_idx++, head, &done); 5422a5f14f2SAbhi Das if (done) 5432a5f14f2SAbhi Das goto out; /* found */ 5442a5f14f2SAbhi Das } 5452a5f14f2SAbhi Das } 5462a5f14f2SAbhi Das 5472a5f14f2SAbhi Das out: 5482a5f14f2SAbhi Das if (bio) 5492a5f14f2SAbhi Das submit_bio(bio); 5502a5f14f2SAbhi Das while (read_idx <= index) 5512a5f14f2SAbhi Das gfs2_jhead_process_page(jd, read_idx++, head, &done); 5522a5f14f2SAbhi Das 5532a5f14f2SAbhi Das if (!ret) 5542a5f14f2SAbhi Das ret = filemap_check_wb_err(mapping, since); 5552a5f14f2SAbhi Das 5562a5f14f2SAbhi Das return ret; 5572a5f14f2SAbhi Das } 5582a5f14f2SAbhi Das 559dad30e90SSteven Whitehouse static struct page *gfs2_get_log_desc(struct gfs2_sbd *sdp, u32 ld_type, 560dad30e90SSteven Whitehouse u32 ld_length, u32 ld_data1) 561e8c92ed7SSteven Whitehouse { 562144a4c2fSSteven Whitehouse struct page *page = mempool_alloc(gfs2_page_pool, GFP_NOIO); 563e8c92ed7SSteven Whitehouse struct gfs2_log_descriptor *ld = page_address(page); 564e8c92ed7SSteven Whitehouse clear_page(ld); 56516615be1SSteven Whitehouse ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC); 56616615be1SSteven Whitehouse ld->ld_header.mh_type = cpu_to_be32(GFS2_METATYPE_LD); 56716615be1SSteven Whitehouse ld->ld_header.mh_format = cpu_to_be32(GFS2_FORMAT_LD); 56816615be1SSteven Whitehouse ld->ld_type = cpu_to_be32(ld_type); 569dad30e90SSteven Whitehouse ld->ld_length = cpu_to_be32(ld_length); 570dad30e90SSteven Whitehouse ld->ld_data1 = cpu_to_be32(ld_data1); 57116615be1SSteven Whitehouse ld->ld_data2 = 0; 572e8c92ed7SSteven Whitehouse return page; 57316615be1SSteven Whitehouse } 57416615be1SSteven Whitehouse 575dad30e90SSteven Whitehouse static void gfs2_check_magic(struct buffer_head *bh) 576dad30e90SSteven Whitehouse { 577dad30e90SSteven Whitehouse void *kaddr; 578dad30e90SSteven Whitehouse __be32 *ptr; 579dad30e90SSteven Whitehouse 580dad30e90SSteven Whitehouse clear_buffer_escaped(bh); 581dad30e90SSteven Whitehouse kaddr = kmap_atomic(bh->b_page); 582dad30e90SSteven Whitehouse ptr = kaddr + bh_offset(bh); 583dad30e90SSteven Whitehouse if (*ptr == cpu_to_be32(GFS2_MAGIC)) 584dad30e90SSteven Whitehouse set_buffer_escaped(bh); 585dad30e90SSteven Whitehouse kunmap_atomic(kaddr); 586dad30e90SSteven Whitehouse } 587dad30e90SSteven Whitehouse 5887f63257dSBenjamin Marzinski static int blocknr_cmp(void *priv, struct list_head *a, struct list_head *b) 5897f63257dSBenjamin Marzinski { 5907f63257dSBenjamin Marzinski struct gfs2_bufdata *bda, *bdb; 5917f63257dSBenjamin Marzinski 5927f63257dSBenjamin Marzinski bda = list_entry(a, struct gfs2_bufdata, bd_list); 5937f63257dSBenjamin Marzinski bdb = list_entry(b, struct gfs2_bufdata, bd_list); 5947f63257dSBenjamin Marzinski 5957f63257dSBenjamin Marzinski if (bda->bd_bh->b_blocknr < bdb->bd_bh->b_blocknr) 5967f63257dSBenjamin Marzinski return -1; 5977f63257dSBenjamin Marzinski if (bda->bd_bh->b_blocknr > bdb->bd_bh->b_blocknr) 5987f63257dSBenjamin Marzinski return 1; 5997f63257dSBenjamin Marzinski return 0; 6007f63257dSBenjamin Marzinski } 6017f63257dSBenjamin Marzinski 602dad30e90SSteven Whitehouse static void gfs2_before_commit(struct gfs2_sbd *sdp, unsigned int limit, 603dad30e90SSteven Whitehouse unsigned int total, struct list_head *blist, 604dad30e90SSteven Whitehouse bool is_databuf) 605b3b94faaSDavid Teigland { 606b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld; 607b3b94faaSDavid Teigland struct gfs2_bufdata *bd1 = NULL, *bd2; 608e8c92ed7SSteven Whitehouse struct page *page; 609b3b94faaSDavid Teigland unsigned int num; 610b3b94faaSDavid Teigland unsigned n; 611b3b94faaSDavid Teigland __be64 *ptr; 612b3b94faaSDavid Teigland 613905d2aefSBob Peterson gfs2_log_lock(sdp); 6147f63257dSBenjamin Marzinski list_sort(NULL, blist, blocknr_cmp); 615c0752aa7SBob Peterson bd1 = bd2 = list_prepare_entry(bd1, blist, bd_list); 616b3b94faaSDavid Teigland while(total) { 617b3b94faaSDavid Teigland num = total; 618b3b94faaSDavid Teigland if (total > limit) 619b3b94faaSDavid Teigland num = limit; 620905d2aefSBob Peterson gfs2_log_unlock(sdp); 6214a586812SBob Peterson page = gfs2_get_log_desc(sdp, 6224a586812SBob Peterson is_databuf ? GFS2_LOG_DESC_JDATA : 6234a586812SBob Peterson GFS2_LOG_DESC_METADATA, num + 1, num); 624e8c92ed7SSteven Whitehouse ld = page_address(page); 625905d2aefSBob Peterson gfs2_log_lock(sdp); 626e8c92ed7SSteven Whitehouse ptr = (__be64 *)(ld + 1); 627b3b94faaSDavid Teigland 628b3b94faaSDavid Teigland n = 0; 629c0752aa7SBob Peterson list_for_each_entry_continue(bd1, blist, bd_list) { 630b3b94faaSDavid Teigland *ptr++ = cpu_to_be64(bd1->bd_bh->b_blocknr); 631dad30e90SSteven Whitehouse if (is_databuf) { 632dad30e90SSteven Whitehouse gfs2_check_magic(bd1->bd_bh); 633dad30e90SSteven Whitehouse *ptr++ = cpu_to_be64(buffer_escaped(bd1->bd_bh) ? 1 : 0); 634dad30e90SSteven Whitehouse } 635b3b94faaSDavid Teigland if (++n >= num) 636b3b94faaSDavid Teigland break; 637b3b94faaSDavid Teigland } 638b3b94faaSDavid Teigland 639905d2aefSBob Peterson gfs2_log_unlock(sdp); 640e8c92ed7SSteven Whitehouse gfs2_log_write_page(sdp, page); 641905d2aefSBob Peterson gfs2_log_lock(sdp); 642b3b94faaSDavid Teigland 643b3b94faaSDavid Teigland n = 0; 644c0752aa7SBob Peterson list_for_each_entry_continue(bd2, blist, bd_list) { 64516615be1SSteven Whitehouse get_bh(bd2->bd_bh); 646905d2aefSBob Peterson gfs2_log_unlock(sdp); 64716615be1SSteven Whitehouse lock_buffer(bd2->bd_bh); 648dad30e90SSteven Whitehouse 649dad30e90SSteven Whitehouse if (buffer_escaped(bd2->bd_bh)) { 650dad30e90SSteven Whitehouse void *kaddr; 651dad30e90SSteven Whitehouse page = mempool_alloc(gfs2_page_pool, GFP_NOIO); 652dad30e90SSteven Whitehouse ptr = page_address(page); 653dad30e90SSteven Whitehouse kaddr = kmap_atomic(bd2->bd_bh->b_page); 654dad30e90SSteven Whitehouse memcpy(ptr, kaddr + bh_offset(bd2->bd_bh), 655dad30e90SSteven Whitehouse bd2->bd_bh->b_size); 656dad30e90SSteven Whitehouse kunmap_atomic(kaddr); 657dad30e90SSteven Whitehouse *(__be32 *)ptr = 0; 658dad30e90SSteven Whitehouse clear_buffer_escaped(bd2->bd_bh); 659dad30e90SSteven Whitehouse unlock_buffer(bd2->bd_bh); 660dad30e90SSteven Whitehouse brelse(bd2->bd_bh); 661dad30e90SSteven Whitehouse gfs2_log_write_page(sdp, page); 662dad30e90SSteven Whitehouse } else { 663e8c92ed7SSteven Whitehouse gfs2_log_write_bh(sdp, bd2->bd_bh); 664dad30e90SSteven Whitehouse } 665905d2aefSBob Peterson gfs2_log_lock(sdp); 666b3b94faaSDavid Teigland if (++n >= num) 667b3b94faaSDavid Teigland break; 668b3b94faaSDavid Teigland } 669b3b94faaSDavid Teigland 670905d2aefSBob Peterson BUG_ON(total < num); 671b3b94faaSDavid Teigland total -= num; 672b3b94faaSDavid Teigland } 673905d2aefSBob Peterson gfs2_log_unlock(sdp); 674b3b94faaSDavid Teigland } 675b3b94faaSDavid Teigland 676d69a3c65SSteven Whitehouse static void buf_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 677dad30e90SSteven Whitehouse { 678dad30e90SSteven Whitehouse unsigned int limit = buf_limit(sdp); /* 503 for 4k blocks */ 679022ef4feSSteven Whitehouse unsigned int nbuf; 680d69a3c65SSteven Whitehouse if (tr == NULL) 681d69a3c65SSteven Whitehouse return; 682022ef4feSSteven Whitehouse nbuf = tr->tr_num_buf_new - tr->tr_num_buf_rm; 683022ef4feSSteven Whitehouse gfs2_before_commit(sdp, limit, nbuf, &tr->tr_buf, 0); 684dad30e90SSteven Whitehouse } 685dad30e90SSteven Whitehouse 68616ca9412SBenjamin Marzinski static void buf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 687b3b94faaSDavid Teigland { 688d69a3c65SSteven Whitehouse struct list_head *head; 689b3b94faaSDavid Teigland struct gfs2_bufdata *bd; 690b3b94faaSDavid Teigland 691d69a3c65SSteven Whitehouse if (tr == NULL) 69216ca9412SBenjamin Marzinski return; 69316ca9412SBenjamin Marzinski 694d69a3c65SSteven Whitehouse head = &tr->tr_buf; 695b3b94faaSDavid Teigland while (!list_empty(head)) { 696c0752aa7SBob Peterson bd = list_entry(head->next, struct gfs2_bufdata, bd_list); 697c0752aa7SBob Peterson list_del_init(&bd->bd_list); 69816ca9412SBenjamin Marzinski gfs2_unpin(sdp, bd->bd_bh, tr); 699b3b94faaSDavid Teigland } 700b3b94faaSDavid Teigland } 701b3b94faaSDavid Teigland 702b3b94faaSDavid Teigland static void buf_lo_before_scan(struct gfs2_jdesc *jd, 70355167622SAl Viro struct gfs2_log_header_host *head, int pass) 704b3b94faaSDavid Teigland { 705b3b94faaSDavid Teigland if (pass != 0) 706b3b94faaSDavid Teigland return; 707b3b94faaSDavid Teigland 708a17d758bSBob Peterson jd->jd_found_blocks = 0; 709a17d758bSBob Peterson jd->jd_replayed_blocks = 0; 710b3b94faaSDavid Teigland } 711b3b94faaSDavid Teigland 712b3b94faaSDavid Teigland static int buf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, 713b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld, __be64 *ptr, 714b3b94faaSDavid Teigland int pass) 715b3b94faaSDavid Teigland { 716feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 717feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 7185c676f6dSSteven Whitehouse struct gfs2_glock *gl = ip->i_gl; 719b3b94faaSDavid Teigland unsigned int blks = be32_to_cpu(ld->ld_data1); 720b3b94faaSDavid Teigland struct buffer_head *bh_log, *bh_ip; 721cd915493SSteven Whitehouse u64 blkno; 722b3b94faaSDavid Teigland int error = 0; 723b3b94faaSDavid Teigland 724b3b94faaSDavid Teigland if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_METADATA) 725b3b94faaSDavid Teigland return 0; 726b3b94faaSDavid Teigland 727e1cb6be9SBob Peterson gfs2_replay_incr_blk(jd, &start); 728b3b94faaSDavid Teigland 729e1cb6be9SBob Peterson for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { 730b3b94faaSDavid Teigland blkno = be64_to_cpu(*ptr++); 731b3b94faaSDavid Teigland 732a17d758bSBob Peterson jd->jd_found_blocks++; 733b3b94faaSDavid Teigland 734a17d758bSBob Peterson if (gfs2_revoke_check(jd, blkno, start)) 735b3b94faaSDavid Teigland continue; 736b3b94faaSDavid Teigland 737b3b94faaSDavid Teigland error = gfs2_replay_read_block(jd, start, &bh_log); 738b3b94faaSDavid Teigland if (error) 739b3b94faaSDavid Teigland return error; 740b3b94faaSDavid Teigland 741b3b94faaSDavid Teigland bh_ip = gfs2_meta_new(gl, blkno); 742b3b94faaSDavid Teigland memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); 743b3b94faaSDavid Teigland 744b3b94faaSDavid Teigland if (gfs2_meta_check(sdp, bh_ip)) 745b3b94faaSDavid Teigland error = -EIO; 746b3b94faaSDavid Teigland else 747b3b94faaSDavid Teigland mark_buffer_dirty(bh_ip); 748b3b94faaSDavid Teigland 749b3b94faaSDavid Teigland brelse(bh_log); 750b3b94faaSDavid Teigland brelse(bh_ip); 751b3b94faaSDavid Teigland 752b3b94faaSDavid Teigland if (error) 753b3b94faaSDavid Teigland break; 754b3b94faaSDavid Teigland 755a17d758bSBob Peterson jd->jd_replayed_blocks++; 756b3b94faaSDavid Teigland } 757b3b94faaSDavid Teigland 758b3b94faaSDavid Teigland return error; 759b3b94faaSDavid Teigland } 760b3b94faaSDavid Teigland 7617c0ef28aSSteven Whitehouse /** 7627c0ef28aSSteven Whitehouse * gfs2_meta_sync - Sync all buffers associated with a glock 7637c0ef28aSSteven Whitehouse * @gl: The glock 7647c0ef28aSSteven Whitehouse * 7657c0ef28aSSteven Whitehouse */ 7667c0ef28aSSteven Whitehouse 7677c0ef28aSSteven Whitehouse static void gfs2_meta_sync(struct gfs2_glock *gl) 7687c0ef28aSSteven Whitehouse { 7697c0ef28aSSteven Whitehouse struct address_space *mapping = gfs2_glock2aspace(gl); 77015562c43SBob Peterson struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; 7717c0ef28aSSteven Whitehouse int error; 7727c0ef28aSSteven Whitehouse 77370d4ee94SSteven Whitehouse if (mapping == NULL) 77470d4ee94SSteven Whitehouse mapping = &sdp->sd_aspace; 77570d4ee94SSteven Whitehouse 7767c0ef28aSSteven Whitehouse filemap_fdatawrite(mapping); 7777c0ef28aSSteven Whitehouse error = filemap_fdatawait(mapping); 7787c0ef28aSSteven Whitehouse 7797c0ef28aSSteven Whitehouse if (error) 78015562c43SBob Peterson gfs2_io_error(gl->gl_name.ln_sbd); 7817c0ef28aSSteven Whitehouse } 7827c0ef28aSSteven Whitehouse 783b3b94faaSDavid Teigland static void buf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 784b3b94faaSDavid Teigland { 785feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 786feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 787b3b94faaSDavid Teigland 788b3b94faaSDavid Teigland if (error) { 7897276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 790b3b94faaSDavid Teigland return; 791b3b94faaSDavid Teigland } 792b3b94faaSDavid Teigland if (pass != 1) 793b3b94faaSDavid Teigland return; 794b3b94faaSDavid Teigland 7957276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 796b3b94faaSDavid Teigland 797b3b94faaSDavid Teigland fs_info(sdp, "jid=%u: Replayed %u of %u blocks\n", 798a17d758bSBob Peterson jd->jd_jid, jd->jd_replayed_blocks, jd->jd_found_blocks); 799b3b94faaSDavid Teigland } 800b3b94faaSDavid Teigland 801d69a3c65SSteven Whitehouse static void revoke_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 802b3b94faaSDavid Teigland { 803b3b94faaSDavid Teigland struct gfs2_meta_header *mh; 804b3b94faaSDavid Teigland unsigned int offset; 805b3b94faaSDavid Teigland struct list_head *head = &sdp->sd_log_le_revoke; 80682e86087SSteven Whitehouse struct gfs2_bufdata *bd; 807e8c92ed7SSteven Whitehouse struct page *page; 808dad30e90SSteven Whitehouse unsigned int length; 809b3b94faaSDavid Teigland 8105d054964SBenjamin Marzinski gfs2_write_revokes(sdp); 811b3b94faaSDavid Teigland if (!sdp->sd_log_num_revoke) 812b3b94faaSDavid Teigland return; 813b3b94faaSDavid Teigland 814dad30e90SSteven Whitehouse length = gfs2_struct2blk(sdp, sdp->sd_log_num_revoke, sizeof(u64)); 815dad30e90SSteven Whitehouse page = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_REVOKE, length, sdp->sd_log_num_revoke); 816b3b94faaSDavid Teigland offset = sizeof(struct gfs2_log_descriptor); 817b3b94faaSDavid Teigland 818c0752aa7SBob Peterson list_for_each_entry(bd, head, bd_list) { 819b3b94faaSDavid Teigland sdp->sd_log_num_revoke--; 820b3b94faaSDavid Teigland 821cd915493SSteven Whitehouse if (offset + sizeof(u64) > sdp->sd_sb.sb_bsize) { 822b3b94faaSDavid Teigland 823e8c92ed7SSteven Whitehouse gfs2_log_write_page(sdp, page); 824e8c92ed7SSteven Whitehouse page = mempool_alloc(gfs2_page_pool, GFP_NOIO); 825e8c92ed7SSteven Whitehouse mh = page_address(page); 826e8c92ed7SSteven Whitehouse clear_page(mh); 827b3b94faaSDavid Teigland mh->mh_magic = cpu_to_be32(GFS2_MAGIC); 828e3167dedSSteven Whitehouse mh->mh_type = cpu_to_be32(GFS2_METATYPE_LB); 829e3167dedSSteven Whitehouse mh->mh_format = cpu_to_be32(GFS2_FORMAT_LB); 830b3b94faaSDavid Teigland offset = sizeof(struct gfs2_meta_header); 831b3b94faaSDavid Teigland } 832b3b94faaSDavid Teigland 833e8c92ed7SSteven Whitehouse *(__be64 *)(page_address(page) + offset) = cpu_to_be64(bd->bd_blkno); 834cd915493SSteven Whitehouse offset += sizeof(u64); 835b3b94faaSDavid Teigland } 836b3b94faaSDavid Teigland gfs2_assert_withdraw(sdp, !sdp->sd_log_num_revoke); 837b3b94faaSDavid Teigland 838e8c92ed7SSteven Whitehouse gfs2_log_write_page(sdp, page); 839b3b94faaSDavid Teigland } 840b3b94faaSDavid Teigland 84116ca9412SBenjamin Marzinski static void revoke_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 842f42ab085SSteven Whitehouse { 843f42ab085SSteven Whitehouse struct list_head *head = &sdp->sd_log_le_revoke; 844f42ab085SSteven Whitehouse struct gfs2_bufdata *bd; 845f42ab085SSteven Whitehouse struct gfs2_glock *gl; 846f42ab085SSteven Whitehouse 847f42ab085SSteven Whitehouse while (!list_empty(head)) { 848c0752aa7SBob Peterson bd = list_entry(head->next, struct gfs2_bufdata, bd_list); 849c0752aa7SBob Peterson list_del_init(&bd->bd_list); 850f42ab085SSteven Whitehouse gl = bd->bd_gl; 851f42ab085SSteven Whitehouse atomic_dec(&gl->gl_revokes); 852f42ab085SSteven Whitehouse clear_bit(GLF_LFLUSH, &gl->gl_flags); 853f42ab085SSteven Whitehouse kmem_cache_free(gfs2_bufdata_cachep, bd); 854f42ab085SSteven Whitehouse } 855f42ab085SSteven Whitehouse } 856f42ab085SSteven Whitehouse 857b3b94faaSDavid Teigland static void revoke_lo_before_scan(struct gfs2_jdesc *jd, 85855167622SAl Viro struct gfs2_log_header_host *head, int pass) 859b3b94faaSDavid Teigland { 860b3b94faaSDavid Teigland if (pass != 0) 861b3b94faaSDavid Teigland return; 862b3b94faaSDavid Teigland 863a17d758bSBob Peterson jd->jd_found_revokes = 0; 864a17d758bSBob Peterson jd->jd_replay_tail = head->lh_tail; 865b3b94faaSDavid Teigland } 866b3b94faaSDavid Teigland 867b3b94faaSDavid Teigland static int revoke_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, 868b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld, __be64 *ptr, 869b3b94faaSDavid Teigland int pass) 870b3b94faaSDavid Teigland { 871feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 872b3b94faaSDavid Teigland unsigned int blks = be32_to_cpu(ld->ld_length); 873b3b94faaSDavid Teigland unsigned int revokes = be32_to_cpu(ld->ld_data1); 874b3b94faaSDavid Teigland struct buffer_head *bh; 875b3b94faaSDavid Teigland unsigned int offset; 876cd915493SSteven Whitehouse u64 blkno; 877b3b94faaSDavid Teigland int first = 1; 878b3b94faaSDavid Teigland int error; 879b3b94faaSDavid Teigland 880b3b94faaSDavid Teigland if (pass != 0 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_REVOKE) 881b3b94faaSDavid Teigland return 0; 882b3b94faaSDavid Teigland 883b3b94faaSDavid Teigland offset = sizeof(struct gfs2_log_descriptor); 884b3b94faaSDavid Teigland 885e1cb6be9SBob Peterson for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { 886b3b94faaSDavid Teigland error = gfs2_replay_read_block(jd, start, &bh); 887b3b94faaSDavid Teigland if (error) 888b3b94faaSDavid Teigland return error; 889b3b94faaSDavid Teigland 890b3b94faaSDavid Teigland if (!first) 891b3b94faaSDavid Teigland gfs2_metatype_check(sdp, bh, GFS2_METATYPE_LB); 892b3b94faaSDavid Teigland 893cd915493SSteven Whitehouse while (offset + sizeof(u64) <= sdp->sd_sb.sb_bsize) { 894b3b94faaSDavid Teigland blkno = be64_to_cpu(*(__be64 *)(bh->b_data + offset)); 895b3b94faaSDavid Teigland 896a17d758bSBob Peterson error = gfs2_revoke_add(jd, blkno, start); 8973ad62e87SBob Peterson if (error < 0) { 8983ad62e87SBob Peterson brelse(bh); 899b3b94faaSDavid Teigland return error; 9003ad62e87SBob Peterson } 901b3b94faaSDavid Teigland else if (error) 902a17d758bSBob Peterson jd->jd_found_revokes++; 903b3b94faaSDavid Teigland 904b3b94faaSDavid Teigland if (!--revokes) 905b3b94faaSDavid Teigland break; 906cd915493SSteven Whitehouse offset += sizeof(u64); 907b3b94faaSDavid Teigland } 908b3b94faaSDavid Teigland 909b3b94faaSDavid Teigland brelse(bh); 910b3b94faaSDavid Teigland offset = sizeof(struct gfs2_meta_header); 911b3b94faaSDavid Teigland first = 0; 912b3b94faaSDavid Teigland } 913b3b94faaSDavid Teigland 914b3b94faaSDavid Teigland return 0; 915b3b94faaSDavid Teigland } 916b3b94faaSDavid Teigland 917b3b94faaSDavid Teigland static void revoke_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 918b3b94faaSDavid Teigland { 919feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 920b3b94faaSDavid Teigland 921b3b94faaSDavid Teigland if (error) { 922a17d758bSBob Peterson gfs2_revoke_clean(jd); 923b3b94faaSDavid Teigland return; 924b3b94faaSDavid Teigland } 925b3b94faaSDavid Teigland if (pass != 1) 926b3b94faaSDavid Teigland return; 927b3b94faaSDavid Teigland 928b3b94faaSDavid Teigland fs_info(sdp, "jid=%u: Found %u revoke tags\n", 929a17d758bSBob Peterson jd->jd_jid, jd->jd_found_revokes); 930b3b94faaSDavid Teigland 931a17d758bSBob Peterson gfs2_revoke_clean(jd); 932b3b94faaSDavid Teigland } 933b3b94faaSDavid Teigland 93418ec7d5cSSteven Whitehouse /** 93518ec7d5cSSteven Whitehouse * databuf_lo_before_commit - Scan the data buffers, writing as we go 93618ec7d5cSSteven Whitehouse * 93718ec7d5cSSteven Whitehouse */ 938d7b616e2SSteven Whitehouse 939d69a3c65SSteven Whitehouse static void databuf_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 940b3b94faaSDavid Teigland { 941022ef4feSSteven Whitehouse unsigned int limit = databuf_limit(sdp); 942022ef4feSSteven Whitehouse unsigned int nbuf; 943d69a3c65SSteven Whitehouse if (tr == NULL) 944d69a3c65SSteven Whitehouse return; 945022ef4feSSteven Whitehouse nbuf = tr->tr_num_databuf_new - tr->tr_num_databuf_rm; 946022ef4feSSteven Whitehouse gfs2_before_commit(sdp, limit, nbuf, &tr->tr_databuf, 1); 947b3b94faaSDavid Teigland } 948b3b94faaSDavid Teigland 94918ec7d5cSSteven Whitehouse static int databuf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, 95018ec7d5cSSteven Whitehouse struct gfs2_log_descriptor *ld, 95118ec7d5cSSteven Whitehouse __be64 *ptr, int pass) 95218ec7d5cSSteven Whitehouse { 953feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 9545c676f6dSSteven Whitehouse struct gfs2_glock *gl = ip->i_gl; 95518ec7d5cSSteven Whitehouse unsigned int blks = be32_to_cpu(ld->ld_data1); 95618ec7d5cSSteven Whitehouse struct buffer_head *bh_log, *bh_ip; 957cd915493SSteven Whitehouse u64 blkno; 958cd915493SSteven Whitehouse u64 esc; 95918ec7d5cSSteven Whitehouse int error = 0; 96018ec7d5cSSteven Whitehouse 96118ec7d5cSSteven Whitehouse if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_JDATA) 96218ec7d5cSSteven Whitehouse return 0; 96318ec7d5cSSteven Whitehouse 964e1cb6be9SBob Peterson gfs2_replay_incr_blk(jd, &start); 965e1cb6be9SBob Peterson for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { 96618ec7d5cSSteven Whitehouse blkno = be64_to_cpu(*ptr++); 96718ec7d5cSSteven Whitehouse esc = be64_to_cpu(*ptr++); 96818ec7d5cSSteven Whitehouse 969a17d758bSBob Peterson jd->jd_found_blocks++; 97018ec7d5cSSteven Whitehouse 971a17d758bSBob Peterson if (gfs2_revoke_check(jd, blkno, start)) 97218ec7d5cSSteven Whitehouse continue; 97318ec7d5cSSteven Whitehouse 97418ec7d5cSSteven Whitehouse error = gfs2_replay_read_block(jd, start, &bh_log); 97518ec7d5cSSteven Whitehouse if (error) 97618ec7d5cSSteven Whitehouse return error; 97718ec7d5cSSteven Whitehouse 97818ec7d5cSSteven Whitehouse bh_ip = gfs2_meta_new(gl, blkno); 97918ec7d5cSSteven Whitehouse memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); 98018ec7d5cSSteven Whitehouse 98118ec7d5cSSteven Whitehouse /* Unescape */ 98218ec7d5cSSteven Whitehouse if (esc) { 98318ec7d5cSSteven Whitehouse __be32 *eptr = (__be32 *)bh_ip->b_data; 98418ec7d5cSSteven Whitehouse *eptr = cpu_to_be32(GFS2_MAGIC); 98518ec7d5cSSteven Whitehouse } 98618ec7d5cSSteven Whitehouse mark_buffer_dirty(bh_ip); 98718ec7d5cSSteven Whitehouse 98818ec7d5cSSteven Whitehouse brelse(bh_log); 98918ec7d5cSSteven Whitehouse brelse(bh_ip); 99018ec7d5cSSteven Whitehouse 991a17d758bSBob Peterson jd->jd_replayed_blocks++; 99218ec7d5cSSteven Whitehouse } 99318ec7d5cSSteven Whitehouse 99418ec7d5cSSteven Whitehouse return error; 99518ec7d5cSSteven Whitehouse } 99618ec7d5cSSteven Whitehouse 99718ec7d5cSSteven Whitehouse /* FIXME: sort out accounting for log blocks etc. */ 99818ec7d5cSSteven Whitehouse 99918ec7d5cSSteven Whitehouse static void databuf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 100018ec7d5cSSteven Whitehouse { 1001feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 1002feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 100318ec7d5cSSteven Whitehouse 100418ec7d5cSSteven Whitehouse if (error) { 10057276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 100618ec7d5cSSteven Whitehouse return; 100718ec7d5cSSteven Whitehouse } 100818ec7d5cSSteven Whitehouse if (pass != 1) 100918ec7d5cSSteven Whitehouse return; 101018ec7d5cSSteven Whitehouse 101118ec7d5cSSteven Whitehouse /* data sync? */ 10127276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 101318ec7d5cSSteven Whitehouse 101418ec7d5cSSteven Whitehouse fs_info(sdp, "jid=%u: Replayed %u of %u data blocks\n", 1015a17d758bSBob Peterson jd->jd_jid, jd->jd_replayed_blocks, jd->jd_found_blocks); 101618ec7d5cSSteven Whitehouse } 101718ec7d5cSSteven Whitehouse 101816ca9412SBenjamin Marzinski static void databuf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 101918ec7d5cSSteven Whitehouse { 1020d69a3c65SSteven Whitehouse struct list_head *head; 102118ec7d5cSSteven Whitehouse struct gfs2_bufdata *bd; 102218ec7d5cSSteven Whitehouse 1023d69a3c65SSteven Whitehouse if (tr == NULL) 102416ca9412SBenjamin Marzinski return; 102516ca9412SBenjamin Marzinski 1026d69a3c65SSteven Whitehouse head = &tr->tr_databuf; 102718ec7d5cSSteven Whitehouse while (!list_empty(head)) { 1028c0752aa7SBob Peterson bd = list_entry(head->next, struct gfs2_bufdata, bd_list); 1029c0752aa7SBob Peterson list_del_init(&bd->bd_list); 103016ca9412SBenjamin Marzinski gfs2_unpin(sdp, bd->bd_bh, tr); 103118ec7d5cSSteven Whitehouse } 103218ec7d5cSSteven Whitehouse } 103318ec7d5cSSteven Whitehouse 103418ec7d5cSSteven Whitehouse 1035b09e593dSSteven Whitehouse const struct gfs2_log_operations gfs2_buf_lops = { 1036b3b94faaSDavid Teigland .lo_before_commit = buf_lo_before_commit, 1037b3b94faaSDavid Teigland .lo_after_commit = buf_lo_after_commit, 1038b3b94faaSDavid Teigland .lo_before_scan = buf_lo_before_scan, 1039b3b94faaSDavid Teigland .lo_scan_elements = buf_lo_scan_elements, 1040b3b94faaSDavid Teigland .lo_after_scan = buf_lo_after_scan, 1041ea67eedbSSteven Whitehouse .lo_name = "buf", 1042b3b94faaSDavid Teigland }; 1043b3b94faaSDavid Teigland 1044b09e593dSSteven Whitehouse const struct gfs2_log_operations gfs2_revoke_lops = { 1045b3b94faaSDavid Teigland .lo_before_commit = revoke_lo_before_commit, 1046f42ab085SSteven Whitehouse .lo_after_commit = revoke_lo_after_commit, 1047b3b94faaSDavid Teigland .lo_before_scan = revoke_lo_before_scan, 1048b3b94faaSDavid Teigland .lo_scan_elements = revoke_lo_scan_elements, 1049b3b94faaSDavid Teigland .lo_after_scan = revoke_lo_after_scan, 1050ea67eedbSSteven Whitehouse .lo_name = "revoke", 1051b3b94faaSDavid Teigland }; 1052b3b94faaSDavid Teigland 1053b09e593dSSteven Whitehouse const struct gfs2_log_operations gfs2_databuf_lops = { 1054b3b94faaSDavid Teigland .lo_before_commit = databuf_lo_before_commit, 105518ec7d5cSSteven Whitehouse .lo_after_commit = databuf_lo_after_commit, 105618ec7d5cSSteven Whitehouse .lo_scan_elements = databuf_lo_scan_elements, 105718ec7d5cSSteven Whitehouse .lo_after_scan = databuf_lo_after_scan, 1058ea67eedbSSteven Whitehouse .lo_name = "databuf", 1059b3b94faaSDavid Teigland }; 1060b3b94faaSDavid Teigland 1061b09e593dSSteven Whitehouse const struct gfs2_log_operations *gfs2_log_ops[] = { 1062b3b94faaSDavid Teigland &gfs2_databuf_lops, 106316615be1SSteven Whitehouse &gfs2_buf_lops, 106416615be1SSteven Whitehouse &gfs2_revoke_lops, 1065ea67eedbSSteven Whitehouse NULL, 1066b3b94faaSDavid Teigland }; 1067b3b94faaSDavid Teigland 1068