David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. |
Steven Whitehouse | 3a8a9a1 | 2006-05-18 15:09:15 -0400 | [diff] [blame] | 3 | * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 4 | * |
| 5 | * This copyrighted material is made available to anyone wishing to use, |
| 6 | * modify, copy, or redistribute it subject to the terms and conditions |
Steven Whitehouse | e9fc2aa | 2006-09-01 11:05:15 -0400 | [diff] [blame] | 7 | * of the GNU General Public License version 2. |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 8 | */ |
| 9 | |
| 10 | #include <linux/sched.h> |
| 11 | #include <linux/slab.h> |
| 12 | #include <linux/spinlock.h> |
| 13 | #include <linux/completion.h> |
| 14 | #include <linux/buffer_head.h> |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 15 | #include <linux/gfs2_ondisk.h> |
Steven Whitehouse | c969f58 | 2009-04-07 14:13:01 +0100 | [diff] [blame] | 16 | #include <linux/bio.h> |
| 17 | #include <linux/fs.h> |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 18 | |
| 19 | #include "gfs2.h" |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 20 | #include "incore.h" |
Robert Peterson | 2332c44 | 2007-06-18 14:50:20 -0500 | [diff] [blame] | 21 | #include "inode.h" |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 22 | #include "glock.h" |
| 23 | #include "log.h" |
| 24 | #include "lops.h" |
| 25 | #include "meta_io.h" |
| 26 | #include "recovery.h" |
| 27 | #include "rgrp.h" |
| 28 | #include "trans.h" |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 29 | #include "util.h" |
Steven Whitehouse | 6399777 | 2009-06-12 08:49:20 +0100 | [diff] [blame] | 30 | #include "trace_gfs2.h" |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 31 | |
Steven Whitehouse | 9b9107a | 2007-08-27 13:54:05 +0100 | [diff] [blame] | 32 | /** |
| 33 | * gfs2_pin - Pin a buffer in memory |
| 34 | * @sdp: The superblock |
| 35 | * @bh: The buffer to be pinned |
| 36 | * |
| 37 | * The log lock must be held when calling this function |
| 38 | */ |
| 39 | static void gfs2_pin(struct gfs2_sbd *sdp, struct buffer_head *bh) |
| 40 | { |
| 41 | struct gfs2_bufdata *bd; |
| 42 | |
Steven Whitehouse | 29687a2 | 2011-03-30 16:33:25 +0100 | [diff] [blame] | 43 | BUG_ON(!current->journal_info); |
Steven Whitehouse | 9b9107a | 2007-08-27 13:54:05 +0100 | [diff] [blame] | 44 | |
| 45 | clear_buffer_dirty(bh); |
| 46 | if (test_set_buffer_pinned(bh)) |
| 47 | gfs2_assert_withdraw(sdp, 0); |
| 48 | if (!buffer_uptodate(bh)) |
| 49 | gfs2_io_error_bh(sdp, bh); |
| 50 | bd = bh->b_private; |
| 51 | /* If this buffer is in the AIL and it has already been written |
| 52 | * to in-place disk block, remove it from the AIL. |
| 53 | */ |
Steven Whitehouse | c618e87 | 2011-03-14 12:40:29 +0000 | [diff] [blame] | 54 | spin_lock(&sdp->sd_ail_lock); |
Steven Whitehouse | 9b9107a | 2007-08-27 13:54:05 +0100 | [diff] [blame] | 55 | if (bd->bd_ail) |
| 56 | list_move(&bd->bd_ail_st_list, &bd->bd_ail->ai_ail2_list); |
Steven Whitehouse | c618e87 | 2011-03-14 12:40:29 +0000 | [diff] [blame] | 57 | spin_unlock(&sdp->sd_ail_lock); |
Steven Whitehouse | 9b9107a | 2007-08-27 13:54:05 +0100 | [diff] [blame] | 58 | get_bh(bh); |
Benjamin Marzinski | 5e687ea | 2010-05-04 14:29:16 -0500 | [diff] [blame] | 59 | atomic_inc(&sdp->sd_log_pinned); |
Steven Whitehouse | 6399777 | 2009-06-12 08:49:20 +0100 | [diff] [blame] | 60 | trace_gfs2_pin(bd, 1); |
Steven Whitehouse | 9b9107a | 2007-08-27 13:54:05 +0100 | [diff] [blame] | 61 | } |
| 62 | |
Bob Peterson | 7c9ca62 | 2011-08-31 09:53:19 +0100 | [diff] [blame] | 63 | static bool buffer_is_rgrp(const struct gfs2_bufdata *bd) |
| 64 | { |
| 65 | return bd->bd_gl->gl_name.ln_type == LM_TYPE_RGRP; |
| 66 | } |
| 67 | |
| 68 | static void maybe_release_space(struct gfs2_bufdata *bd) |
| 69 | { |
| 70 | struct gfs2_glock *gl = bd->bd_gl; |
| 71 | struct gfs2_sbd *sdp = gl->gl_sbd; |
| 72 | struct gfs2_rgrpd *rgd = gl->gl_object; |
| 73 | unsigned int index = bd->bd_bh->b_blocknr - gl->gl_name.ln_number; |
| 74 | struct gfs2_bitmap *bi = rgd->rd_bits + index; |
| 75 | |
| 76 | if (bi->bi_clone == 0) |
| 77 | return; |
| 78 | if (sdp->sd_args.ar_discard) |
Steven Whitehouse | 66fc061 | 2012-02-08 12:58:32 +0000 | [diff] [blame^] | 79 | gfs2_rgrp_send_discards(sdp, rgd->rd_data0, bd->bd_bh, bi, 1, NULL); |
Bob Peterson | 7c9ca62 | 2011-08-31 09:53:19 +0100 | [diff] [blame] | 80 | memcpy(bi->bi_clone + bi->bi_offset, |
| 81 | bd->bd_bh->b_data + bi->bi_offset, bi->bi_len); |
| 82 | clear_bit(GBF_FULL, &bi->bi_flags); |
| 83 | rgd->rd_free_clone = rgd->rd_free; |
| 84 | } |
| 85 | |
Steven Whitehouse | 9b9107a | 2007-08-27 13:54:05 +0100 | [diff] [blame] | 86 | /** |
| 87 | * gfs2_unpin - Unpin a buffer |
| 88 | * @sdp: the filesystem the buffer belongs to |
| 89 | * @bh: The buffer to unpin |
| 90 | * @ai: |
Steven Whitehouse | 29687a2 | 2011-03-30 16:33:25 +0100 | [diff] [blame] | 91 | * @flags: The inode dirty flags |
Steven Whitehouse | 9b9107a | 2007-08-27 13:54:05 +0100 | [diff] [blame] | 92 | * |
| 93 | */ |
| 94 | |
| 95 | static void gfs2_unpin(struct gfs2_sbd *sdp, struct buffer_head *bh, |
| 96 | struct gfs2_ail *ai) |
| 97 | { |
| 98 | struct gfs2_bufdata *bd = bh->b_private; |
| 99 | |
Steven Whitehouse | 29687a2 | 2011-03-30 16:33:25 +0100 | [diff] [blame] | 100 | BUG_ON(!buffer_uptodate(bh)); |
| 101 | BUG_ON(!buffer_pinned(bh)); |
Steven Whitehouse | 9b9107a | 2007-08-27 13:54:05 +0100 | [diff] [blame] | 102 | |
| 103 | lock_buffer(bh); |
| 104 | mark_buffer_dirty(bh); |
| 105 | clear_buffer_pinned(bh); |
| 106 | |
Bob Peterson | 7c9ca62 | 2011-08-31 09:53:19 +0100 | [diff] [blame] | 107 | if (buffer_is_rgrp(bd)) |
| 108 | maybe_release_space(bd); |
| 109 | |
Dave Chinner | d6a079e | 2011-03-11 11:52:25 +0000 | [diff] [blame] | 110 | spin_lock(&sdp->sd_ail_lock); |
Steven Whitehouse | 9b9107a | 2007-08-27 13:54:05 +0100 | [diff] [blame] | 111 | if (bd->bd_ail) { |
| 112 | list_del(&bd->bd_ail_st_list); |
| 113 | brelse(bh); |
| 114 | } else { |
| 115 | struct gfs2_glock *gl = bd->bd_gl; |
| 116 | list_add(&bd->bd_ail_gl_list, &gl->gl_ail_list); |
| 117 | atomic_inc(&gl->gl_ail_count); |
| 118 | } |
| 119 | bd->bd_ail = ai; |
| 120 | list_add(&bd->bd_ail_st_list, &ai->ai_ail1_list); |
Dave Chinner | d6a079e | 2011-03-11 11:52:25 +0000 | [diff] [blame] | 121 | spin_unlock(&sdp->sd_ail_lock); |
| 122 | |
Steven Whitehouse | 29687a2 | 2011-03-30 16:33:25 +0100 | [diff] [blame] | 123 | clear_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags); |
Steven Whitehouse | 6399777 | 2009-06-12 08:49:20 +0100 | [diff] [blame] | 124 | trace_gfs2_pin(bd, 0); |
Steven Whitehouse | 9b9107a | 2007-08-27 13:54:05 +0100 | [diff] [blame] | 125 | unlock_buffer(bh); |
Benjamin Marzinski | 5e687ea | 2010-05-04 14:29:16 -0500 | [diff] [blame] | 126 | atomic_dec(&sdp->sd_log_pinned); |
Steven Whitehouse | 9b9107a | 2007-08-27 13:54:05 +0100 | [diff] [blame] | 127 | } |
| 128 | |
Steven Whitehouse | 16615be | 2007-09-17 10:59:52 +0100 | [diff] [blame] | 129 | |
| 130 | static inline struct gfs2_log_descriptor *bh_log_desc(struct buffer_head *bh) |
| 131 | { |
| 132 | return (struct gfs2_log_descriptor *)bh->b_data; |
| 133 | } |
| 134 | |
| 135 | static inline __be64 *bh_log_ptr(struct buffer_head *bh) |
| 136 | { |
| 137 | struct gfs2_log_descriptor *ld = bh_log_desc(bh); |
| 138 | return (__force __be64 *)(ld + 1); |
| 139 | } |
| 140 | |
| 141 | static inline __be64 *bh_ptr_end(struct buffer_head *bh) |
| 142 | { |
| 143 | return (__force __be64 *)(bh->b_data + bh->b_size); |
| 144 | } |
| 145 | |
Steven Whitehouse | 47ac553 | 2012-02-03 15:21:59 +0000 | [diff] [blame] | 146 | /** |
| 147 | * gfs2_log_write_endio - End of I/O for a log buffer |
| 148 | * @bh: The buffer head |
| 149 | * @uptodate: I/O Status |
| 150 | * |
| 151 | */ |
| 152 | |
| 153 | static void gfs2_log_write_endio(struct buffer_head *bh, int uptodate) |
| 154 | { |
| 155 | struct gfs2_sbd *sdp = bh->b_private; |
| 156 | bh->b_private = NULL; |
| 157 | |
| 158 | end_buffer_write_sync(bh, uptodate); |
| 159 | if (atomic_dec_and_test(&sdp->sd_log_in_flight)) |
| 160 | wake_up(&sdp->sd_log_flush_wait); |
| 161 | } |
| 162 | |
| 163 | /** |
| 164 | * gfs2_log_get_buf - Get and initialize a buffer to use for log control data |
| 165 | * @sdp: The GFS2 superblock |
| 166 | * |
| 167 | * tReturns: the buffer_head |
| 168 | */ |
| 169 | |
| 170 | static struct buffer_head *gfs2_log_get_buf(struct gfs2_sbd *sdp) |
| 171 | { |
| 172 | u64 blkno = gfs2_log_bmap(sdp, sdp->sd_log_flush_head); |
| 173 | struct buffer_head *bh; |
| 174 | |
| 175 | bh = sb_getblk(sdp->sd_vfs, blkno); |
| 176 | lock_buffer(bh); |
| 177 | memset(bh->b_data, 0, bh->b_size); |
| 178 | set_buffer_uptodate(bh); |
| 179 | clear_buffer_dirty(bh); |
| 180 | gfs2_log_incr_head(sdp); |
| 181 | atomic_inc(&sdp->sd_log_in_flight); |
| 182 | bh->b_private = sdp; |
| 183 | bh->b_end_io = gfs2_log_write_endio; |
| 184 | |
| 185 | return bh; |
| 186 | } |
| 187 | |
| 188 | /** |
| 189 | * gfs2_fake_write_endio - |
| 190 | * @bh: The buffer head |
| 191 | * @uptodate: The I/O Status |
| 192 | * |
| 193 | */ |
| 194 | |
| 195 | static void gfs2_fake_write_endio(struct buffer_head *bh, int uptodate) |
| 196 | { |
| 197 | struct buffer_head *real_bh = bh->b_private; |
| 198 | struct gfs2_bufdata *bd = real_bh->b_private; |
| 199 | struct gfs2_sbd *sdp = bd->bd_gl->gl_sbd; |
| 200 | |
| 201 | end_buffer_write_sync(bh, uptodate); |
| 202 | free_buffer_head(bh); |
| 203 | unlock_buffer(real_bh); |
| 204 | brelse(real_bh); |
| 205 | if (atomic_dec_and_test(&sdp->sd_log_in_flight)) |
| 206 | wake_up(&sdp->sd_log_flush_wait); |
| 207 | } |
| 208 | |
| 209 | /** |
| 210 | * gfs2_log_fake_buf - Build a fake buffer head to write metadata buffer to log |
| 211 | * @sdp: the filesystem |
| 212 | * @data: the data the buffer_head should point to |
| 213 | * |
| 214 | * Returns: the log buffer descriptor |
| 215 | */ |
| 216 | |
| 217 | static struct buffer_head *gfs2_log_fake_buf(struct gfs2_sbd *sdp, |
| 218 | struct buffer_head *real) |
| 219 | { |
| 220 | u64 blkno = gfs2_log_bmap(sdp, sdp->sd_log_flush_head); |
| 221 | struct buffer_head *bh; |
| 222 | |
| 223 | bh = alloc_buffer_head(GFP_NOFS | __GFP_NOFAIL); |
| 224 | atomic_set(&bh->b_count, 1); |
| 225 | bh->b_state = (1 << BH_Mapped) | (1 << BH_Uptodate) | (1 << BH_Lock); |
| 226 | set_bh_page(bh, real->b_page, bh_offset(real)); |
| 227 | bh->b_blocknr = blkno; |
| 228 | bh->b_size = sdp->sd_sb.sb_bsize; |
| 229 | bh->b_bdev = sdp->sd_vfs->s_bdev; |
| 230 | bh->b_private = real; |
| 231 | bh->b_end_io = gfs2_fake_write_endio; |
| 232 | |
| 233 | gfs2_log_incr_head(sdp); |
| 234 | atomic_inc(&sdp->sd_log_in_flight); |
| 235 | |
| 236 | return bh; |
| 237 | } |
Steven Whitehouse | 16615be | 2007-09-17 10:59:52 +0100 | [diff] [blame] | 238 | |
| 239 | static struct buffer_head *gfs2_get_log_desc(struct gfs2_sbd *sdp, u32 ld_type) |
| 240 | { |
| 241 | struct buffer_head *bh = gfs2_log_get_buf(sdp); |
| 242 | struct gfs2_log_descriptor *ld = bh_log_desc(bh); |
| 243 | ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC); |
| 244 | ld->ld_header.mh_type = cpu_to_be32(GFS2_METATYPE_LD); |
| 245 | ld->ld_header.mh_format = cpu_to_be32(GFS2_FORMAT_LD); |
| 246 | ld->ld_type = cpu_to_be32(ld_type); |
| 247 | ld->ld_length = 0; |
| 248 | ld->ld_data1 = 0; |
| 249 | ld->ld_data2 = 0; |
| 250 | memset(ld->ld_reserved, 0, sizeof(ld->ld_reserved)); |
| 251 | return bh; |
| 252 | } |
| 253 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 254 | static void buf_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le) |
| 255 | { |
| 256 | struct gfs2_bufdata *bd = container_of(le, struct gfs2_bufdata, bd_le); |
Steven Whitehouse | 0ab7d13 | 2009-11-06 16:20:51 +0000 | [diff] [blame] | 257 | struct gfs2_meta_header *mh; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 258 | struct gfs2_trans *tr; |
| 259 | |
Steven Whitehouse | 9b9107a | 2007-08-27 13:54:05 +0100 | [diff] [blame] | 260 | lock_buffer(bd->bd_bh); |
Steven Whitehouse | 8bd9572 | 2007-01-25 10:04:20 +0000 | [diff] [blame] | 261 | gfs2_log_lock(sdp); |
Steven Whitehouse | 9b9107a | 2007-08-27 13:54:05 +0100 | [diff] [blame] | 262 | if (!list_empty(&bd->bd_list_tr)) |
| 263 | goto out; |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 264 | tr = current->journal_info; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 265 | tr->tr_touched = 1; |
| 266 | tr->tr_num_buf++; |
| 267 | list_add(&bd->bd_list_tr, &tr->tr_list_buf); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 268 | if (!list_empty(&le->le_list)) |
Steven Whitehouse | 9b9107a | 2007-08-27 13:54:05 +0100 | [diff] [blame] | 269 | goto out; |
Steven Whitehouse | 2bcd610 | 2007-11-08 14:25:12 +0000 | [diff] [blame] | 270 | set_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags); |
| 271 | set_bit(GLF_DIRTY, &bd->bd_gl->gl_flags); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 272 | gfs2_meta_check(sdp, bd->bd_bh); |
Steven Whitehouse | a98ab22 | 2006-01-18 13:38:44 +0000 | [diff] [blame] | 273 | gfs2_pin(sdp, bd->bd_bh); |
Steven Whitehouse | 0ab7d13 | 2009-11-06 16:20:51 +0000 | [diff] [blame] | 274 | mh = (struct gfs2_meta_header *)bd->bd_bh->b_data; |
| 275 | mh->__pad0 = cpu_to_be64(0); |
| 276 | mh->mh_jid = cpu_to_be32(sdp->sd_jdesc->jd_jid); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 277 | sdp->sd_log_num_buf++; |
| 278 | list_add(&le->le_list, &sdp->sd_log_le_buf); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 279 | tr->tr_num_buf_new++; |
Steven Whitehouse | 9b9107a | 2007-08-27 13:54:05 +0100 | [diff] [blame] | 280 | out: |
| 281 | gfs2_log_unlock(sdp); |
| 282 | unlock_buffer(bd->bd_bh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 283 | } |
| 284 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 285 | static void buf_lo_before_commit(struct gfs2_sbd *sdp) |
| 286 | { |
| 287 | struct buffer_head *bh; |
| 288 | struct gfs2_log_descriptor *ld; |
| 289 | struct gfs2_bufdata *bd1 = NULL, *bd2; |
Bob Peterson | 905d2ae | 2007-07-24 14:05:31 -0500 | [diff] [blame] | 290 | unsigned int total; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 291 | unsigned int limit; |
| 292 | unsigned int num; |
| 293 | unsigned n; |
| 294 | __be64 *ptr; |
| 295 | |
Robert Peterson | 2332c44 | 2007-06-18 14:50:20 -0500 | [diff] [blame] | 296 | limit = buf_limit(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 297 | /* for 4k blocks, limit = 503 */ |
| 298 | |
Bob Peterson | 905d2ae | 2007-07-24 14:05:31 -0500 | [diff] [blame] | 299 | gfs2_log_lock(sdp); |
| 300 | total = sdp->sd_log_num_buf; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 301 | bd1 = bd2 = list_prepare_entry(bd1, &sdp->sd_log_le_buf, bd_le.le_list); |
| 302 | while(total) { |
| 303 | num = total; |
| 304 | if (total > limit) |
| 305 | num = limit; |
Bob Peterson | 905d2ae | 2007-07-24 14:05:31 -0500 | [diff] [blame] | 306 | gfs2_log_unlock(sdp); |
Steven Whitehouse | 16615be | 2007-09-17 10:59:52 +0100 | [diff] [blame] | 307 | bh = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_METADATA); |
Bob Peterson | 905d2ae | 2007-07-24 14:05:31 -0500 | [diff] [blame] | 308 | gfs2_log_lock(sdp); |
Steven Whitehouse | 16615be | 2007-09-17 10:59:52 +0100 | [diff] [blame] | 309 | ld = bh_log_desc(bh); |
| 310 | ptr = bh_log_ptr(bh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 311 | ld->ld_length = cpu_to_be32(num + 1); |
| 312 | ld->ld_data1 = cpu_to_be32(num); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 313 | |
| 314 | n = 0; |
Steven Whitehouse | 568f4c9 | 2006-02-27 12:00:42 -0500 | [diff] [blame] | 315 | list_for_each_entry_continue(bd1, &sdp->sd_log_le_buf, |
| 316 | bd_le.le_list) { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 317 | *ptr++ = cpu_to_be64(bd1->bd_bh->b_blocknr); |
| 318 | if (++n >= num) |
| 319 | break; |
| 320 | } |
| 321 | |
Bob Peterson | 905d2ae | 2007-07-24 14:05:31 -0500 | [diff] [blame] | 322 | gfs2_log_unlock(sdp); |
Jens Axboe | 721a960 | 2011-03-09 11:56:30 +0100 | [diff] [blame] | 323 | submit_bh(WRITE_SYNC, bh); |
Bob Peterson | 905d2ae | 2007-07-24 14:05:31 -0500 | [diff] [blame] | 324 | gfs2_log_lock(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 325 | |
| 326 | n = 0; |
Steven Whitehouse | 568f4c9 | 2006-02-27 12:00:42 -0500 | [diff] [blame] | 327 | list_for_each_entry_continue(bd2, &sdp->sd_log_le_buf, |
| 328 | bd_le.le_list) { |
Steven Whitehouse | 16615be | 2007-09-17 10:59:52 +0100 | [diff] [blame] | 329 | get_bh(bd2->bd_bh); |
Bob Peterson | 905d2ae | 2007-07-24 14:05:31 -0500 | [diff] [blame] | 330 | gfs2_log_unlock(sdp); |
Steven Whitehouse | 16615be | 2007-09-17 10:59:52 +0100 | [diff] [blame] | 331 | lock_buffer(bd2->bd_bh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 332 | bh = gfs2_log_fake_buf(sdp, bd2->bd_bh); |
Jens Axboe | 721a960 | 2011-03-09 11:56:30 +0100 | [diff] [blame] | 333 | submit_bh(WRITE_SYNC, bh); |
Bob Peterson | 905d2ae | 2007-07-24 14:05:31 -0500 | [diff] [blame] | 334 | gfs2_log_lock(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 335 | if (++n >= num) |
| 336 | break; |
| 337 | } |
| 338 | |
Bob Peterson | 905d2ae | 2007-07-24 14:05:31 -0500 | [diff] [blame] | 339 | BUG_ON(total < num); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 340 | total -= num; |
| 341 | } |
Bob Peterson | 905d2ae | 2007-07-24 14:05:31 -0500 | [diff] [blame] | 342 | gfs2_log_unlock(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 343 | } |
| 344 | |
| 345 | static void buf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai) |
| 346 | { |
| 347 | struct list_head *head = &sdp->sd_log_le_buf; |
| 348 | struct gfs2_bufdata *bd; |
| 349 | |
| 350 | while (!list_empty(head)) { |
| 351 | bd = list_entry(head->next, struct gfs2_bufdata, bd_le.le_list); |
| 352 | list_del_init(&bd->bd_le.le_list); |
| 353 | sdp->sd_log_num_buf--; |
| 354 | |
Steven Whitehouse | a98ab22 | 2006-01-18 13:38:44 +0000 | [diff] [blame] | 355 | gfs2_unpin(sdp, bd->bd_bh, ai); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 356 | } |
| 357 | gfs2_assert_warn(sdp, !sdp->sd_log_num_buf); |
| 358 | } |
| 359 | |
| 360 | static void buf_lo_before_scan(struct gfs2_jdesc *jd, |
Al Viro | 5516762 | 2006-10-13 21:47:13 -0400 | [diff] [blame] | 361 | struct gfs2_log_header_host *head, int pass) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 362 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 363 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 364 | |
| 365 | if (pass != 0) |
| 366 | return; |
| 367 | |
| 368 | sdp->sd_found_blocks = 0; |
| 369 | sdp->sd_replayed_blocks = 0; |
| 370 | } |
| 371 | |
| 372 | static int buf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, |
| 373 | struct gfs2_log_descriptor *ld, __be64 *ptr, |
| 374 | int pass) |
| 375 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 376 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); |
| 377 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 378 | struct gfs2_glock *gl = ip->i_gl; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 379 | unsigned int blks = be32_to_cpu(ld->ld_data1); |
| 380 | struct buffer_head *bh_log, *bh_ip; |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 381 | u64 blkno; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 382 | int error = 0; |
| 383 | |
| 384 | if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_METADATA) |
| 385 | return 0; |
| 386 | |
| 387 | gfs2_replay_incr_blk(sdp, &start); |
| 388 | |
| 389 | for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) { |
| 390 | blkno = be64_to_cpu(*ptr++); |
| 391 | |
| 392 | sdp->sd_found_blocks++; |
| 393 | |
| 394 | if (gfs2_revoke_check(sdp, blkno, start)) |
| 395 | continue; |
| 396 | |
| 397 | error = gfs2_replay_read_block(jd, start, &bh_log); |
Steven Whitehouse | 82ffa51 | 2006-09-04 14:47:06 -0400 | [diff] [blame] | 398 | if (error) |
| 399 | return error; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 400 | |
| 401 | bh_ip = gfs2_meta_new(gl, blkno); |
| 402 | memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); |
| 403 | |
| 404 | if (gfs2_meta_check(sdp, bh_ip)) |
| 405 | error = -EIO; |
| 406 | else |
| 407 | mark_buffer_dirty(bh_ip); |
| 408 | |
| 409 | brelse(bh_log); |
| 410 | brelse(bh_ip); |
| 411 | |
| 412 | if (error) |
| 413 | break; |
| 414 | |
| 415 | sdp->sd_replayed_blocks++; |
| 416 | } |
| 417 | |
| 418 | return error; |
| 419 | } |
| 420 | |
| 421 | static void buf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) |
| 422 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 423 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); |
| 424 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 425 | |
| 426 | if (error) { |
Steven Whitehouse | 7276b3b | 2006-09-21 17:05:23 -0400 | [diff] [blame] | 427 | gfs2_meta_sync(ip->i_gl); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 428 | return; |
| 429 | } |
| 430 | if (pass != 1) |
| 431 | return; |
| 432 | |
Steven Whitehouse | 7276b3b | 2006-09-21 17:05:23 -0400 | [diff] [blame] | 433 | gfs2_meta_sync(ip->i_gl); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 434 | |
| 435 | fs_info(sdp, "jid=%u: Replayed %u of %u blocks\n", |
| 436 | jd->jd_jid, sdp->sd_replayed_blocks, sdp->sd_found_blocks); |
| 437 | } |
| 438 | |
| 439 | static void revoke_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le) |
| 440 | { |
Steven Whitehouse | f42ab08 | 2011-04-14 16:50:31 +0100 | [diff] [blame] | 441 | struct gfs2_bufdata *bd = container_of(le, struct gfs2_bufdata, bd_le); |
| 442 | struct gfs2_glock *gl = bd->bd_gl; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 443 | struct gfs2_trans *tr; |
| 444 | |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 445 | tr = current->journal_info; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 446 | tr->tr_touched = 1; |
| 447 | tr->tr_num_revoke++; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 448 | sdp->sd_log_num_revoke++; |
Steven Whitehouse | f42ab08 | 2011-04-14 16:50:31 +0100 | [diff] [blame] | 449 | atomic_inc(&gl->gl_revokes); |
| 450 | set_bit(GLF_LFLUSH, &gl->gl_flags); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 451 | list_add(&le->le_list, &sdp->sd_log_le_revoke); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 452 | } |
| 453 | |
| 454 | static void revoke_lo_before_commit(struct gfs2_sbd *sdp) |
| 455 | { |
| 456 | struct gfs2_log_descriptor *ld; |
| 457 | struct gfs2_meta_header *mh; |
| 458 | struct buffer_head *bh; |
| 459 | unsigned int offset; |
| 460 | struct list_head *head = &sdp->sd_log_le_revoke; |
Steven Whitehouse | 82e8608 | 2007-09-02 15:39:43 +0100 | [diff] [blame] | 461 | struct gfs2_bufdata *bd; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 462 | |
| 463 | if (!sdp->sd_log_num_revoke) |
| 464 | return; |
| 465 | |
Steven Whitehouse | 16615be | 2007-09-17 10:59:52 +0100 | [diff] [blame] | 466 | bh = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_REVOKE); |
| 467 | ld = bh_log_desc(bh); |
Steven Whitehouse | 568f4c9 | 2006-02-27 12:00:42 -0500 | [diff] [blame] | 468 | ld->ld_length = cpu_to_be32(gfs2_struct2blk(sdp, sdp->sd_log_num_revoke, |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 469 | sizeof(u64))); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 470 | ld->ld_data1 = cpu_to_be32(sdp->sd_log_num_revoke); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 471 | offset = sizeof(struct gfs2_log_descriptor); |
| 472 | |
Steven Whitehouse | f42ab08 | 2011-04-14 16:50:31 +0100 | [diff] [blame] | 473 | list_for_each_entry(bd, head, bd_le.le_list) { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 474 | sdp->sd_log_num_revoke--; |
| 475 | |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 476 | if (offset + sizeof(u64) > sdp->sd_sb.sb_bsize) { |
Jens Axboe | 721a960 | 2011-03-09 11:56:30 +0100 | [diff] [blame] | 477 | submit_bh(WRITE_SYNC, bh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 478 | |
| 479 | bh = gfs2_log_get_buf(sdp); |
| 480 | mh = (struct gfs2_meta_header *)bh->b_data; |
| 481 | mh->mh_magic = cpu_to_be32(GFS2_MAGIC); |
Steven Whitehouse | e3167de | 2006-03-30 15:46:23 -0500 | [diff] [blame] | 482 | mh->mh_type = cpu_to_be32(GFS2_METATYPE_LB); |
| 483 | mh->mh_format = cpu_to_be32(GFS2_FORMAT_LB); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 484 | offset = sizeof(struct gfs2_meta_header); |
| 485 | } |
| 486 | |
Steven Whitehouse | 82e8608 | 2007-09-02 15:39:43 +0100 | [diff] [blame] | 487 | *(__be64 *)(bh->b_data + offset) = cpu_to_be64(bd->bd_blkno); |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 488 | offset += sizeof(u64); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 489 | } |
| 490 | gfs2_assert_withdraw(sdp, !sdp->sd_log_num_revoke); |
| 491 | |
Jens Axboe | 721a960 | 2011-03-09 11:56:30 +0100 | [diff] [blame] | 492 | submit_bh(WRITE_SYNC, bh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 493 | } |
| 494 | |
Steven Whitehouse | f42ab08 | 2011-04-14 16:50:31 +0100 | [diff] [blame] | 495 | static void revoke_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai) |
| 496 | { |
| 497 | struct list_head *head = &sdp->sd_log_le_revoke; |
| 498 | struct gfs2_bufdata *bd; |
| 499 | struct gfs2_glock *gl; |
| 500 | |
| 501 | while (!list_empty(head)) { |
| 502 | bd = list_entry(head->next, struct gfs2_bufdata, bd_le.le_list); |
| 503 | list_del_init(&bd->bd_le.le_list); |
| 504 | gl = bd->bd_gl; |
| 505 | atomic_dec(&gl->gl_revokes); |
| 506 | clear_bit(GLF_LFLUSH, &gl->gl_flags); |
| 507 | kmem_cache_free(gfs2_bufdata_cachep, bd); |
| 508 | } |
| 509 | } |
| 510 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 511 | static void revoke_lo_before_scan(struct gfs2_jdesc *jd, |
Al Viro | 5516762 | 2006-10-13 21:47:13 -0400 | [diff] [blame] | 512 | struct gfs2_log_header_host *head, int pass) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 513 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 514 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 515 | |
| 516 | if (pass != 0) |
| 517 | return; |
| 518 | |
| 519 | sdp->sd_found_revokes = 0; |
| 520 | sdp->sd_replay_tail = head->lh_tail; |
| 521 | } |
| 522 | |
| 523 | static int revoke_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, |
| 524 | struct gfs2_log_descriptor *ld, __be64 *ptr, |
| 525 | int pass) |
| 526 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 527 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 528 | unsigned int blks = be32_to_cpu(ld->ld_length); |
| 529 | unsigned int revokes = be32_to_cpu(ld->ld_data1); |
| 530 | struct buffer_head *bh; |
| 531 | unsigned int offset; |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 532 | u64 blkno; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 533 | int first = 1; |
| 534 | int error; |
| 535 | |
| 536 | if (pass != 0 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_REVOKE) |
| 537 | return 0; |
| 538 | |
| 539 | offset = sizeof(struct gfs2_log_descriptor); |
| 540 | |
| 541 | for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) { |
| 542 | error = gfs2_replay_read_block(jd, start, &bh); |
| 543 | if (error) |
| 544 | return error; |
| 545 | |
| 546 | if (!first) |
| 547 | gfs2_metatype_check(sdp, bh, GFS2_METATYPE_LB); |
| 548 | |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 549 | while (offset + sizeof(u64) <= sdp->sd_sb.sb_bsize) { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 550 | blkno = be64_to_cpu(*(__be64 *)(bh->b_data + offset)); |
| 551 | |
| 552 | error = gfs2_revoke_add(sdp, blkno, start); |
Bob Peterson | 3ad62e8 | 2008-01-28 16:35:13 -0600 | [diff] [blame] | 553 | if (error < 0) { |
| 554 | brelse(bh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 555 | return error; |
Bob Peterson | 3ad62e8 | 2008-01-28 16:35:13 -0600 | [diff] [blame] | 556 | } |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 557 | else if (error) |
| 558 | sdp->sd_found_revokes++; |
| 559 | |
| 560 | if (!--revokes) |
| 561 | break; |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 562 | offset += sizeof(u64); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 563 | } |
| 564 | |
| 565 | brelse(bh); |
| 566 | offset = sizeof(struct gfs2_meta_header); |
| 567 | first = 0; |
| 568 | } |
| 569 | |
| 570 | return 0; |
| 571 | } |
| 572 | |
| 573 | static void revoke_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) |
| 574 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 575 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 576 | |
| 577 | if (error) { |
| 578 | gfs2_revoke_clean(sdp); |
| 579 | return; |
| 580 | } |
| 581 | if (pass != 1) |
| 582 | return; |
| 583 | |
| 584 | fs_info(sdp, "jid=%u: Found %u revoke tags\n", |
| 585 | jd->jd_jid, sdp->sd_found_revokes); |
| 586 | |
| 587 | gfs2_revoke_clean(sdp); |
| 588 | } |
| 589 | |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 590 | /** |
| 591 | * databuf_lo_add - Add a databuf to the transaction. |
| 592 | * |
| 593 | * This is used in two distinct cases: |
| 594 | * i) In ordered write mode |
| 595 | * We put the data buffer on a list so that we can ensure that its |
| 596 | * synced to disk at the right time |
| 597 | * ii) In journaled data mode |
| 598 | * We need to journal the data block in the same way as metadata in |
| 599 | * the functions above. The difference is that here we have a tag |
| 600 | * which is two __be64's being the block number (as per meta data) |
| 601 | * and a flag which says whether the data block needs escaping or |
| 602 | * not. This means we need a new log entry for each 251 or so data |
| 603 | * blocks, which isn't an enormous overhead but twice as much as |
| 604 | * for normal metadata blocks. |
| 605 | */ |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 606 | static void databuf_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le) |
| 607 | { |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 608 | struct gfs2_bufdata *bd = container_of(le, struct gfs2_bufdata, bd_le); |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 609 | struct gfs2_trans *tr = current->journal_info; |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 610 | struct address_space *mapping = bd->bd_bh->b_page->mapping; |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 611 | struct gfs2_inode *ip = GFS2_I(mapping->host); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 612 | |
Steven Whitehouse | 9b9107a | 2007-08-27 13:54:05 +0100 | [diff] [blame] | 613 | lock_buffer(bd->bd_bh); |
Steven Whitehouse | 8bd9572 | 2007-01-25 10:04:20 +0000 | [diff] [blame] | 614 | gfs2_log_lock(sdp); |
Steven Whitehouse | 9ff8ec3 | 2007-09-28 13:49:05 +0100 | [diff] [blame] | 615 | if (tr) { |
| 616 | if (!list_empty(&bd->bd_list_tr)) |
| 617 | goto out; |
| 618 | tr->tr_touched = 1; |
| 619 | if (gfs2_is_jdata(ip)) { |
| 620 | tr->tr_num_buf++; |
| 621 | list_add(&bd->bd_list_tr, &tr->tr_list_buf); |
| 622 | } |
Robert Peterson | 773ed1a | 2007-06-20 08:34:06 -0500 | [diff] [blame] | 623 | } |
Robert Peterson | 2332c44 | 2007-06-18 14:50:20 -0500 | [diff] [blame] | 624 | if (!list_empty(&le->le_list)) |
Steven Whitehouse | 9b9107a | 2007-08-27 13:54:05 +0100 | [diff] [blame] | 625 | goto out; |
Robert Peterson | 2332c44 | 2007-06-18 14:50:20 -0500 | [diff] [blame] | 626 | |
Steven Whitehouse | 2bcd610 | 2007-11-08 14:25:12 +0000 | [diff] [blame] | 627 | set_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags); |
| 628 | set_bit(GLF_DIRTY, &bd->bd_gl->gl_flags); |
Robert Peterson | 2332c44 | 2007-06-18 14:50:20 -0500 | [diff] [blame] | 629 | if (gfs2_is_jdata(ip)) { |
Robert Peterson | 2332c44 | 2007-06-18 14:50:20 -0500 | [diff] [blame] | 630 | gfs2_pin(sdp, bd->bd_bh); |
| 631 | tr->tr_num_databuf_new++; |
Steven Whitehouse | d7b616e | 2007-09-02 10:48:13 +0100 | [diff] [blame] | 632 | sdp->sd_log_num_databuf++; |
Dave Chinner | e588463 | 2010-02-05 16:45:25 +1100 | [diff] [blame] | 633 | list_add_tail(&le->le_list, &sdp->sd_log_le_databuf); |
Steven Whitehouse | d7b616e | 2007-09-02 10:48:13 +0100 | [diff] [blame] | 634 | } else { |
Dave Chinner | e588463 | 2010-02-05 16:45:25 +1100 | [diff] [blame] | 635 | list_add_tail(&le->le_list, &sdp->sd_log_le_ordered); |
Steven Whitehouse | 9b9107a | 2007-08-27 13:54:05 +0100 | [diff] [blame] | 636 | } |
Steven Whitehouse | 9b9107a | 2007-08-27 13:54:05 +0100 | [diff] [blame] | 637 | out: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 638 | gfs2_log_unlock(sdp); |
Steven Whitehouse | 9b9107a | 2007-08-27 13:54:05 +0100 | [diff] [blame] | 639 | unlock_buffer(bd->bd_bh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 640 | } |
| 641 | |
Steven Whitehouse | 16615be | 2007-09-17 10:59:52 +0100 | [diff] [blame] | 642 | static void gfs2_check_magic(struct buffer_head *bh) |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 643 | { |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 644 | void *kaddr; |
| 645 | __be32 *ptr; |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 646 | |
Steven Whitehouse | 16615be | 2007-09-17 10:59:52 +0100 | [diff] [blame] | 647 | clear_buffer_escaped(bh); |
| 648 | kaddr = kmap_atomic(bh->b_page, KM_USER0); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 649 | ptr = kaddr + bh_offset(bh); |
| 650 | if (*ptr == cpu_to_be32(GFS2_MAGIC)) |
Steven Whitehouse | 16615be | 2007-09-17 10:59:52 +0100 | [diff] [blame] | 651 | set_buffer_escaped(bh); |
Russell Cattelan | c312c4f | 2006-10-12 09:23:41 -0400 | [diff] [blame] | 652 | kunmap_atomic(kaddr, KM_USER0); |
Steven Whitehouse | 16615be | 2007-09-17 10:59:52 +0100 | [diff] [blame] | 653 | } |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 654 | |
Steven Whitehouse | 16615be | 2007-09-17 10:59:52 +0100 | [diff] [blame] | 655 | static void gfs2_write_blocks(struct gfs2_sbd *sdp, struct buffer_head *bh, |
| 656 | struct list_head *list, struct list_head *done, |
| 657 | unsigned int n) |
| 658 | { |
| 659 | struct buffer_head *bh1; |
| 660 | struct gfs2_log_descriptor *ld; |
| 661 | struct gfs2_bufdata *bd; |
| 662 | __be64 *ptr; |
| 663 | |
| 664 | if (!bh) |
| 665 | return; |
| 666 | |
| 667 | ld = bh_log_desc(bh); |
| 668 | ld->ld_length = cpu_to_be32(n + 1); |
| 669 | ld->ld_data1 = cpu_to_be32(n); |
| 670 | |
| 671 | ptr = bh_log_ptr(bh); |
| 672 | |
| 673 | get_bh(bh); |
Jens Axboe | 721a960 | 2011-03-09 11:56:30 +0100 | [diff] [blame] | 674 | submit_bh(WRITE_SYNC, bh); |
Steven Whitehouse | 16615be | 2007-09-17 10:59:52 +0100 | [diff] [blame] | 675 | gfs2_log_lock(sdp); |
| 676 | while(!list_empty(list)) { |
| 677 | bd = list_entry(list->next, struct gfs2_bufdata, bd_le.le_list); |
| 678 | list_move_tail(&bd->bd_le.le_list, done); |
| 679 | get_bh(bd->bd_bh); |
| 680 | while (be64_to_cpu(*ptr) != bd->bd_bh->b_blocknr) { |
| 681 | gfs2_log_incr_head(sdp); |
| 682 | ptr += 2; |
| 683 | } |
| 684 | gfs2_log_unlock(sdp); |
| 685 | lock_buffer(bd->bd_bh); |
| 686 | if (buffer_escaped(bd->bd_bh)) { |
| 687 | void *kaddr; |
| 688 | bh1 = gfs2_log_get_buf(sdp); |
| 689 | kaddr = kmap_atomic(bd->bd_bh->b_page, KM_USER0); |
| 690 | memcpy(bh1->b_data, kaddr + bh_offset(bd->bd_bh), |
| 691 | bh1->b_size); |
| 692 | kunmap_atomic(kaddr, KM_USER0); |
| 693 | *(__be32 *)bh1->b_data = 0; |
| 694 | clear_buffer_escaped(bd->bd_bh); |
| 695 | unlock_buffer(bd->bd_bh); |
| 696 | brelse(bd->bd_bh); |
| 697 | } else { |
| 698 | bh1 = gfs2_log_fake_buf(sdp, bd->bd_bh); |
| 699 | } |
Jens Axboe | 721a960 | 2011-03-09 11:56:30 +0100 | [diff] [blame] | 700 | submit_bh(WRITE_SYNC, bh1); |
Steven Whitehouse | 16615be | 2007-09-17 10:59:52 +0100 | [diff] [blame] | 701 | gfs2_log_lock(sdp); |
| 702 | ptr += 2; |
| 703 | } |
| 704 | gfs2_log_unlock(sdp); |
| 705 | brelse(bh); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 706 | } |
| 707 | |
| 708 | /** |
| 709 | * databuf_lo_before_commit - Scan the data buffers, writing as we go |
| 710 | * |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 711 | */ |
Steven Whitehouse | d7b616e | 2007-09-02 10:48:13 +0100 | [diff] [blame] | 712 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 713 | static void databuf_lo_before_commit(struct gfs2_sbd *sdp) |
| 714 | { |
Steven Whitehouse | 16615be | 2007-09-17 10:59:52 +0100 | [diff] [blame] | 715 | struct gfs2_bufdata *bd = NULL; |
| 716 | struct buffer_head *bh = NULL; |
| 717 | unsigned int n = 0; |
| 718 | __be64 *ptr = NULL, *end = NULL; |
| 719 | LIST_HEAD(processed); |
| 720 | LIST_HEAD(in_progress); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 721 | |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 722 | gfs2_log_lock(sdp); |
Steven Whitehouse | 16615be | 2007-09-17 10:59:52 +0100 | [diff] [blame] | 723 | while (!list_empty(&sdp->sd_log_le_databuf)) { |
| 724 | if (ptr == end) { |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 725 | gfs2_log_unlock(sdp); |
Steven Whitehouse | 16615be | 2007-09-17 10:59:52 +0100 | [diff] [blame] | 726 | gfs2_write_blocks(sdp, bh, &in_progress, &processed, n); |
| 727 | n = 0; |
| 728 | bh = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_JDATA); |
| 729 | ptr = bh_log_ptr(bh); |
| 730 | end = bh_ptr_end(bh) - 1; |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 731 | gfs2_log_lock(sdp); |
Steven Whitehouse | 16615be | 2007-09-17 10:59:52 +0100 | [diff] [blame] | 732 | continue; |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 733 | } |
Steven Whitehouse | 16615be | 2007-09-17 10:59:52 +0100 | [diff] [blame] | 734 | bd = list_entry(sdp->sd_log_le_databuf.next, struct gfs2_bufdata, bd_le.le_list); |
| 735 | list_move_tail(&bd->bd_le.le_list, &in_progress); |
| 736 | gfs2_check_magic(bd->bd_bh); |
| 737 | *ptr++ = cpu_to_be64(bd->bd_bh->b_blocknr); |
| 738 | *ptr++ = cpu_to_be64(buffer_escaped(bh) ? 1 : 0); |
| 739 | n++; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 740 | } |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 741 | gfs2_log_unlock(sdp); |
Steven Whitehouse | 16615be | 2007-09-17 10:59:52 +0100 | [diff] [blame] | 742 | gfs2_write_blocks(sdp, bh, &in_progress, &processed, n); |
| 743 | gfs2_log_lock(sdp); |
| 744 | list_splice(&processed, &sdp->sd_log_le_databuf); |
| 745 | gfs2_log_unlock(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 746 | } |
| 747 | |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 748 | static int databuf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, |
| 749 | struct gfs2_log_descriptor *ld, |
| 750 | __be64 *ptr, int pass) |
| 751 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 752 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); |
| 753 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 754 | struct gfs2_glock *gl = ip->i_gl; |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 755 | unsigned int blks = be32_to_cpu(ld->ld_data1); |
| 756 | struct buffer_head *bh_log, *bh_ip; |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 757 | u64 blkno; |
| 758 | u64 esc; |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 759 | int error = 0; |
| 760 | |
| 761 | if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_JDATA) |
| 762 | return 0; |
| 763 | |
| 764 | gfs2_replay_incr_blk(sdp, &start); |
| 765 | for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) { |
| 766 | blkno = be64_to_cpu(*ptr++); |
| 767 | esc = be64_to_cpu(*ptr++); |
| 768 | |
| 769 | sdp->sd_found_blocks++; |
| 770 | |
| 771 | if (gfs2_revoke_check(sdp, blkno, start)) |
| 772 | continue; |
| 773 | |
| 774 | error = gfs2_replay_read_block(jd, start, &bh_log); |
| 775 | if (error) |
| 776 | return error; |
| 777 | |
| 778 | bh_ip = gfs2_meta_new(gl, blkno); |
| 779 | memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); |
| 780 | |
| 781 | /* Unescape */ |
| 782 | if (esc) { |
| 783 | __be32 *eptr = (__be32 *)bh_ip->b_data; |
| 784 | *eptr = cpu_to_be32(GFS2_MAGIC); |
| 785 | } |
| 786 | mark_buffer_dirty(bh_ip); |
| 787 | |
| 788 | brelse(bh_log); |
| 789 | brelse(bh_ip); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 790 | |
| 791 | sdp->sd_replayed_blocks++; |
| 792 | } |
| 793 | |
| 794 | return error; |
| 795 | } |
| 796 | |
| 797 | /* FIXME: sort out accounting for log blocks etc. */ |
| 798 | |
| 799 | static void databuf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) |
| 800 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 801 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); |
| 802 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 803 | |
| 804 | if (error) { |
Steven Whitehouse | 7276b3b | 2006-09-21 17:05:23 -0400 | [diff] [blame] | 805 | gfs2_meta_sync(ip->i_gl); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 806 | return; |
| 807 | } |
| 808 | if (pass != 1) |
| 809 | return; |
| 810 | |
| 811 | /* data sync? */ |
Steven Whitehouse | 7276b3b | 2006-09-21 17:05:23 -0400 | [diff] [blame] | 812 | gfs2_meta_sync(ip->i_gl); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 813 | |
| 814 | fs_info(sdp, "jid=%u: Replayed %u of %u data blocks\n", |
| 815 | jd->jd_jid, sdp->sd_replayed_blocks, sdp->sd_found_blocks); |
| 816 | } |
| 817 | |
| 818 | static void databuf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai) |
| 819 | { |
| 820 | struct list_head *head = &sdp->sd_log_le_databuf; |
| 821 | struct gfs2_bufdata *bd; |
| 822 | |
| 823 | while (!list_empty(head)) { |
| 824 | bd = list_entry(head->next, struct gfs2_bufdata, bd_le.le_list); |
Steven Whitehouse | b8e1aab | 2006-08-22 16:25:50 -0400 | [diff] [blame] | 825 | list_del_init(&bd->bd_le.le_list); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 826 | sdp->sd_log_num_databuf--; |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 827 | gfs2_unpin(sdp, bd->bd_bh, ai); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 828 | } |
| 829 | gfs2_assert_warn(sdp, !sdp->sd_log_num_databuf); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 830 | } |
| 831 | |
| 832 | |
Steven Whitehouse | b09e593 | 2006-04-07 11:17:32 -0400 | [diff] [blame] | 833 | const struct gfs2_log_operations gfs2_buf_lops = { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 834 | .lo_add = buf_lo_add, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 835 | .lo_before_commit = buf_lo_before_commit, |
| 836 | .lo_after_commit = buf_lo_after_commit, |
| 837 | .lo_before_scan = buf_lo_before_scan, |
| 838 | .lo_scan_elements = buf_lo_scan_elements, |
| 839 | .lo_after_scan = buf_lo_after_scan, |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 840 | .lo_name = "buf", |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 841 | }; |
| 842 | |
Steven Whitehouse | b09e593 | 2006-04-07 11:17:32 -0400 | [diff] [blame] | 843 | const struct gfs2_log_operations gfs2_revoke_lops = { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 844 | .lo_add = revoke_lo_add, |
| 845 | .lo_before_commit = revoke_lo_before_commit, |
Steven Whitehouse | f42ab08 | 2011-04-14 16:50:31 +0100 | [diff] [blame] | 846 | .lo_after_commit = revoke_lo_after_commit, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 847 | .lo_before_scan = revoke_lo_before_scan, |
| 848 | .lo_scan_elements = revoke_lo_scan_elements, |
| 849 | .lo_after_scan = revoke_lo_after_scan, |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 850 | .lo_name = "revoke", |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 851 | }; |
| 852 | |
Steven Whitehouse | b09e593 | 2006-04-07 11:17:32 -0400 | [diff] [blame] | 853 | const struct gfs2_log_operations gfs2_rg_lops = { |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 854 | .lo_name = "rg", |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 855 | }; |
| 856 | |
Steven Whitehouse | b09e593 | 2006-04-07 11:17:32 -0400 | [diff] [blame] | 857 | const struct gfs2_log_operations gfs2_databuf_lops = { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 858 | .lo_add = databuf_lo_add, |
| 859 | .lo_before_commit = databuf_lo_before_commit, |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 860 | .lo_after_commit = databuf_lo_after_commit, |
| 861 | .lo_scan_elements = databuf_lo_scan_elements, |
| 862 | .lo_after_scan = databuf_lo_after_scan, |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 863 | .lo_name = "databuf", |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 864 | }; |
| 865 | |
Steven Whitehouse | b09e593 | 2006-04-07 11:17:32 -0400 | [diff] [blame] | 866 | const struct gfs2_log_operations *gfs2_log_ops[] = { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 867 | &gfs2_databuf_lops, |
Steven Whitehouse | 16615be | 2007-09-17 10:59:52 +0100 | [diff] [blame] | 868 | &gfs2_buf_lops, |
| 869 | &gfs2_rg_lops, |
| 870 | &gfs2_revoke_lops, |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 871 | NULL, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 872 | }; |
| 873 | |