]> pilppa.org Git - linux-2.6-omap-h63xx.git/blobdiff - fs/xfs/xfs_log_recover.c
Merge branch 'rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip...
[linux-2.6-omap-h63xx.git] / fs / xfs / xfs_log_recover.c
index 61af610d79b395248aeb10b0dac0225d15c388af..7ba450116d4ffc97f247c99a8a89f190bf5a89f2 100644 (file)
@@ -94,12 +94,30 @@ xlog_put_bp(
        xfs_buf_free(bp);
 }
 
+STATIC xfs_caddr_t
+xlog_align(
+       xlog_t          *log,
+       xfs_daddr_t     blk_no,
+       int             nbblks,
+       xfs_buf_t       *bp)
+{
+       xfs_caddr_t     ptr;
+
+       if (!log->l_sectbb_log)
+               return XFS_BUF_PTR(bp);
+
+       ptr = XFS_BUF_PTR(bp) + BBTOB((int)blk_no & log->l_sectbb_mask);
+       ASSERT(XFS_BUF_SIZE(bp) >=
+               BBTOB(nbblks + (blk_no & log->l_sectbb_mask)));
+       return ptr;
+}
+
 
 /*
  * nbblks should be uint, but oh well.  Just want to catch that 32-bit length.
  */
-int
-xlog_bread(
+STATIC int
+xlog_bread_noalign(
        xlog_t          *log,
        xfs_daddr_t     blk_no,
        int             nbblks,
@@ -137,6 +155,24 @@ xlog_bread(
        return error;
 }
 
+STATIC int
+xlog_bread(
+       xlog_t          *log,
+       xfs_daddr_t     blk_no,
+       int             nbblks,
+       xfs_buf_t       *bp,
+       xfs_caddr_t     *offset)
+{
+       int             error;
+
+       error = xlog_bread_noalign(log, blk_no, nbblks, bp);
+       if (error)
+               return error;
+
+       *offset = xlog_align(log, blk_no, nbblks, bp);
+       return 0;
+}
+
 /*
  * Write out the buffer at the given block for the given number of blocks.
  * The buffer is kept locked across the write and is returned locked.
@@ -180,24 +216,6 @@ xlog_bwrite(
        return error;
 }
 
-STATIC xfs_caddr_t
-xlog_align(
-       xlog_t          *log,
-       xfs_daddr_t     blk_no,
-       int             nbblks,
-       xfs_buf_t       *bp)
-{
-       xfs_caddr_t     ptr;
-
-       if (!log->l_sectbb_log)
-               return XFS_BUF_PTR(bp);
-
-       ptr = XFS_BUF_PTR(bp) + BBTOB((int)blk_no & log->l_sectbb_mask);
-       ASSERT(XFS_BUF_SIZE(bp) >=
-               BBTOB(nbblks + (blk_no & log->l_sectbb_mask)));
-       return ptr;
-}
-
 #ifdef DEBUG
 /*
  * dump debug superblock and log record information
@@ -211,11 +229,11 @@ xlog_header_check_dump(
 
        cmn_err(CE_DEBUG, "%s:  SB : uuid = ", __func__);
        for (b = 0; b < 16; b++)
-               cmn_err(CE_DEBUG, "%02x", ((uchar_t *)&mp->m_sb.sb_uuid)[b]);
+               cmn_err(CE_DEBUG, "%02x", ((__uint8_t *)&mp->m_sb.sb_uuid)[b]);
        cmn_err(CE_DEBUG, ", fmt = %d\n", XLOG_FMT);
        cmn_err(CE_DEBUG, "    log : uuid = ");
        for (b = 0; b < 16; b++)
-               cmn_err(CE_DEBUG, "%02x",((uchar_t *)&head->h_fs_uuid)[b]);
+               cmn_err(CE_DEBUG, "%02x", ((__uint8_t *)&head->h_fs_uuid)[b]);
        cmn_err(CE_DEBUG, ", fmt = %d\n", be32_to_cpu(head->h_fmt));
 }
 #else
@@ -321,9 +339,9 @@ xlog_find_cycle_start(
 
        mid_blk = BLK_AVG(first_blk, *last_blk);
        while (mid_blk != first_blk && mid_blk != *last_blk) {
-               if ((error = xlog_bread(log, mid_blk, 1, bp)))
+               error = xlog_bread(log, mid_blk, 1, bp, &offset);
+               if (error)
                        return error;
-               offset = xlog_align(log, mid_blk, 1, bp);
                mid_cycle = xlog_get_cycle(offset);
                if (mid_cycle == cycle) {
                        *last_blk = mid_blk;
@@ -379,10 +397,10 @@ xlog_find_verify_cycle(
 
                bcount = min(bufblks, (start_blk + nbblks - i));
 
-               if ((error = xlog_bread(log, i, bcount, bp)))
+               error = xlog_bread(log, i, bcount, bp, &buf);
+               if (error)
                        goto out;
 
-               buf = xlog_align(log, i, bcount, bp);
                for (j = 0; j < bcount; j++) {
                        cycle = xlog_get_cycle(buf);
                        if (cycle == stop_on_cycle_no) {
@@ -436,9 +454,9 @@ xlog_find_verify_log_record(
                        return ENOMEM;
                smallmem = 1;
        } else {
-               if ((error = xlog_bread(log, start_blk, num_blks, bp)))
+               error = xlog_bread(log, start_blk, num_blks, bp, &offset);
+               if (error)
                        goto out;
-               offset = xlog_align(log, start_blk, num_blks, bp);
                offset += ((num_blks - 1) << BBSHIFT);
        }
 
@@ -453,9 +471,9 @@ xlog_find_verify_log_record(
                }
 
                if (smallmem) {
-                       if ((error = xlog_bread(log, i, 1, bp)))
+                       error = xlog_bread(log, i, 1, bp, &offset);
+                       if (error)
                                goto out;
-                       offset = xlog_align(log, i, 1, bp);
                }
 
                head = (xlog_rec_header_t *)offset;
@@ -559,15 +577,18 @@ xlog_find_head(
        bp = xlog_get_bp(log, 1);
        if (!bp)
                return ENOMEM;
-       if ((error = xlog_bread(log, 0, 1, bp)))
+
+       error = xlog_bread(log, 0, 1, bp, &offset);
+       if (error)
                goto bp_err;
-       offset = xlog_align(log, 0, 1, bp);
+
        first_half_cycle = xlog_get_cycle(offset);
 
        last_blk = head_blk = log_bbnum - 1;    /* get cycle # of last block */
-       if ((error = xlog_bread(log, last_blk, 1, bp)))
+       error = xlog_bread(log, last_blk, 1, bp, &offset);
+       if (error)
                goto bp_err;
-       offset = xlog_align(log, last_blk, 1, bp);
+
        last_half_cycle = xlog_get_cycle(offset);
        ASSERT(last_half_cycle != 0);
 
@@ -817,9 +838,10 @@ xlog_find_tail(
        if (!bp)
                return ENOMEM;
        if (*head_blk == 0) {                           /* special case */
-               if ((error = xlog_bread(log, 0, 1, bp)))
+               error = xlog_bread(log, 0, 1, bp, &offset);
+               if (error)
                        goto bread_err;
-               offset = xlog_align(log, 0, 1, bp);
+
                if (xlog_get_cycle(offset) == 0) {
                        *tail_blk = 0;
                        /* leave all other log inited values alone */
@@ -832,9 +854,10 @@ xlog_find_tail(
         */
        ASSERT(*head_blk < INT_MAX);
        for (i = (int)(*head_blk) - 1; i >= 0; i--) {
-               if ((error = xlog_bread(log, i, 1, bp)))
+               error = xlog_bread(log, i, 1, bp, &offset);
+               if (error)
                        goto bread_err;
-               offset = xlog_align(log, i, 1, bp);
+
                if (XLOG_HEADER_MAGIC_NUM == be32_to_cpu(*(__be32 *)offset)) {
                        found = 1;
                        break;
@@ -848,9 +871,10 @@ xlog_find_tail(
         */
        if (!found) {
                for (i = log->l_logBBsize - 1; i >= (int)(*head_blk); i--) {
-                       if ((error = xlog_bread(log, i, 1, bp)))
+                       error = xlog_bread(log, i, 1, bp, &offset);
+                       if (error)
                                goto bread_err;
-                       offset = xlog_align(log, i, 1, bp);
+
                        if (XLOG_HEADER_MAGIC_NUM ==
                            be32_to_cpu(*(__be32 *)offset)) {
                                found = 2;
@@ -922,10 +946,10 @@ xlog_find_tail(
        if (*head_blk == after_umount_blk &&
            be32_to_cpu(rhead->h_num_logops) == 1) {
                umount_data_blk = (i + hblks) % log->l_logBBsize;
-               if ((error = xlog_bread(log, umount_data_blk, 1, bp))) {
+               error = xlog_bread(log, umount_data_blk, 1, bp, &offset);
+               if (error)
                        goto bread_err;
-               }
-               offset = xlog_align(log, umount_data_blk, 1, bp);
+
                op_head = (xlog_op_header_t *)offset;
                if (op_head->oh_flags & XLOG_UNMOUNT_TRANS) {
                        /*
@@ -1017,9 +1041,10 @@ xlog_find_zeroed(
        bp = xlog_get_bp(log, 1);
        if (!bp)
                return ENOMEM;
-       if ((error = xlog_bread(log, 0, 1, bp)))
+       error = xlog_bread(log, 0, 1, bp, &offset);
+       if (error)
                goto bp_err;
-       offset = xlog_align(log, 0, 1, bp);
+
        first_cycle = xlog_get_cycle(offset);
        if (first_cycle == 0) {         /* completely zeroed log */
                *blk_no = 0;
@@ -1028,9 +1053,10 @@ xlog_find_zeroed(
        }
 
        /* check partially zeroed log */
-       if ((error = xlog_bread(log, log_bbnum-1, 1, bp)))
+       error = xlog_bread(log, log_bbnum-1, 1, bp, &offset);
+       if (error)
                goto bp_err;
-       offset = xlog_align(log, log_bbnum-1, 1, bp);
+
        last_cycle = xlog_get_cycle(offset);
        if (last_cycle != 0) {          /* log completely written to */
                xlog_put_bp(bp);
@@ -1152,10 +1178,10 @@ xlog_write_log_records(
         */
        balign = XLOG_SECTOR_ROUNDDOWN_BLKNO(log, start_block);
        if (balign != start_block) {
-               if ((error = xlog_bread(log, start_block, 1, bp))) {
-                       xlog_put_bp(bp);
-                       return error;
-               }
+               error = xlog_bread_noalign(log, start_block, 1, bp);
+               if (error)
+                       goto out_put_bp;
+
                j = start_block - balign;
        }
 
@@ -1175,10 +1201,14 @@ xlog_write_log_records(
                        balign = BBTOB(ealign - start_block);
                        error = XFS_BUF_SET_PTR(bp, offset + balign,
                                                BBTOB(sectbb));
-                       if (!error)
-                               error = xlog_bread(log, ealign, sectbb, bp);
-                       if (!error)
-                               error = XFS_BUF_SET_PTR(bp, offset, bufblks);
+                       if (error)
+                               break;
+
+                       error = xlog_bread_noalign(log, ealign, sectbb, bp);
+                       if (error)
+                               break;
+
+                       error = XFS_BUF_SET_PTR(bp, offset, bufblks);
                        if (error)
                                break;
                }
@@ -1195,6 +1225,8 @@ xlog_write_log_records(
                start_block += endcount;
                j = 0;
        }
+
+ out_put_bp:
        xlog_put_bp(bp);
        return error;
 }
@@ -2511,16 +2543,10 @@ xlog_recover_do_inode_trans(
        }
 
 write_inode_buffer:
-       if (ITEM_TYPE(item) == XFS_LI_INODE) {
-               ASSERT(bp->b_mount == NULL || bp->b_mount == mp);
-               bp->b_mount = mp;
-               XFS_BUF_SET_IODONE_FUNC(bp, xlog_recover_iodone);
-               xfs_bdwrite(mp, bp);
-       } else {
-               XFS_BUF_STALE(bp);
-               error = xfs_bwrite(mp, bp);
-       }
-
+       ASSERT(bp->b_mount == NULL || bp->b_mount == mp);
+       bp->b_mount = mp;
+       XFS_BUF_SET_IODONE_FUNC(bp, xlog_recover_iodone);
+       xfs_bdwrite(mp, bp);
 error:
        if (need_free)
                kmem_free(in_f);
@@ -2769,51 +2795,48 @@ xlog_recover_do_trans(
        int                     error = 0;
        xlog_recover_item_t     *item, *first_item;
 
-       if ((error = xlog_recover_reorder_trans(trans)))
+       error = xlog_recover_reorder_trans(trans);
+       if (error)
                return error;
+
        first_item = item = trans->r_itemq;
        do {
-               /*
-                * we don't need to worry about the block number being
-                * truncated in > 1 TB buffers because in user-land,
-                * we're now n32 or 64-bit so xfs_daddr_t is 64-bits so
-                * the blknos will get through the user-mode buffer
-                * cache properly.  The only bad case is o32 kernels
-                * where xfs_daddr_t is 32-bits but mount will warn us
-                * off a > 1 TB filesystem before we get here.
-                */
-               if ((ITEM_TYPE(item) == XFS_LI_BUF)) {
-                       if  ((error = xlog_recover_do_buffer_trans(log, item,
-                                                                pass)))
-                               break;
-               } else if ((ITEM_TYPE(item) == XFS_LI_INODE)) {
-                       if ((error = xlog_recover_do_inode_trans(log, item,
-                                                               pass)))
-                               break;
-               } else if (ITEM_TYPE(item) == XFS_LI_EFI) {
-                       if ((error = xlog_recover_do_efi_trans(log, item, trans->r_lsn,
-                                                 pass)))
-                               break;
-               } else if (ITEM_TYPE(item) == XFS_LI_EFD) {
+               switch (ITEM_TYPE(item)) {
+               case XFS_LI_BUF:
+                       error = xlog_recover_do_buffer_trans(log, item, pass);
+                       break;
+               case XFS_LI_INODE:
+                       error = xlog_recover_do_inode_trans(log, item, pass);
+                       break;
+               case XFS_LI_EFI:
+                       error = xlog_recover_do_efi_trans(log, item,
+                                                         trans->r_lsn, pass);
+                       break;
+               case XFS_LI_EFD:
                        xlog_recover_do_efd_trans(log, item, pass);
-               } else if (ITEM_TYPE(item) == XFS_LI_DQUOT) {
-                       if ((error = xlog_recover_do_dquot_trans(log, item,
-                                                                  pass)))
-                                       break;
-               } else if ((ITEM_TYPE(item) == XFS_LI_QUOTAOFF)) {
-                       if ((error = xlog_recover_do_quotaoff_trans(log, item,
-                                                                  pass)))
-                                       break;
-               } else {
-                       xlog_warn("XFS: xlog_recover_do_trans");
+                       error = 0;
+                       break;
+               case XFS_LI_DQUOT:
+                       error = xlog_recover_do_dquot_trans(log, item, pass);
+                       break;
+               case XFS_LI_QUOTAOFF:
+                       error = xlog_recover_do_quotaoff_trans(log, item,
+                                                              pass);
+                       break;
+               default:
+                       xlog_warn(
+       "XFS: invalid item type (%d) xlog_recover_do_trans", ITEM_TYPE(item));
                        ASSERT(0);
                        error = XFS_ERROR(EIO);
                        break;
                }
+
+               if (error)
+                       return error;
                item = item->ri_next;
        } while (first_item != item);
 
-       return error;
+       return 0;
 }
 
 /*
@@ -3490,9 +3513,11 @@ xlog_do_recovery_pass(
                hbp = xlog_get_bp(log, 1);
                if (!hbp)
                        return ENOMEM;
-               if ((error = xlog_bread(log, tail_blk, 1, hbp)))
+
+               error = xlog_bread(log, tail_blk, 1, hbp, &offset);
+               if (error)
                        goto bread_err1;
-               offset = xlog_align(log, tail_blk, 1, hbp);
+
                rhead = (xlog_rec_header_t *)offset;
                error = xlog_valid_rec_header(log, rhead, tail_blk);
                if (error)
@@ -3526,9 +3551,10 @@ xlog_do_recovery_pass(
        memset(rhash, 0, sizeof(rhash));
        if (tail_blk <= head_blk) {
                for (blk_no = tail_blk; blk_no < head_blk; ) {
-                       if ((error = xlog_bread(log, blk_no, hblks, hbp)))
+                       error = xlog_bread(log, blk_no, hblks, hbp, &offset);
+                       if (error)
                                goto bread_err2;
-                       offset = xlog_align(log, blk_no, hblks, hbp);
+
                        rhead = (xlog_rec_header_t *)offset;
                        error = xlog_valid_rec_header(log, rhead, blk_no);
                        if (error)
@@ -3536,10 +3562,11 @@ xlog_do_recovery_pass(
 
                        /* blocks in data section */
                        bblks = (int)BTOBB(be32_to_cpu(rhead->h_len));
-                       error = xlog_bread(log, blk_no + hblks, bblks, dbp);
+                       error = xlog_bread(log, blk_no + hblks, bblks, dbp,
+                                          &offset);
                        if (error)
                                goto bread_err2;
-                       offset = xlog_align(log, blk_no + hblks, bblks, dbp);
+
                        xlog_unpack_data(rhead, offset, log);
                        if ((error = xlog_recover_process_data(log,
                                                rhash, rhead, offset, pass)))
@@ -3562,10 +3589,10 @@ xlog_do_recovery_pass(
                        wrapped_hblks = 0;
                        if (blk_no + hblks <= log->l_logBBsize) {
                                /* Read header in one read */
-                               error = xlog_bread(log, blk_no, hblks, hbp);
+                               error = xlog_bread(log, blk_no, hblks, hbp,
+                                                  &offset);
                                if (error)
                                        goto bread_err2;
-                               offset = xlog_align(log, blk_no, hblks, hbp);
                        } else {
                                /* This LR is split across physical log end */
                                if (blk_no != log->l_logBBsize) {
@@ -3573,12 +3600,13 @@ xlog_do_recovery_pass(
                                        ASSERT(blk_no <= INT_MAX);
                                        split_hblks = log->l_logBBsize - (int)blk_no;
                                        ASSERT(split_hblks > 0);
-                                       if ((error = xlog_bread(log, blk_no,
-                                                       split_hblks, hbp)))
+                                       error = xlog_bread(log, blk_no,
+                                                          split_hblks, hbp,
+                                                          &offset);
+                                       if (error)
                                                goto bread_err2;
-                                       offset = xlog_align(log, blk_no,
-                                                       split_hblks, hbp);
                                }
+
                                /*
                                 * Note: this black magic still works with
                                 * large sector sizes (non-512) only because:
@@ -3596,14 +3624,19 @@ xlog_do_recovery_pass(
                                error = XFS_BUF_SET_PTR(hbp,
                                                bufaddr + BBTOB(split_hblks),
                                                BBTOB(hblks - split_hblks));
-                               if (!error)
-                                       error = xlog_bread(log, 0,
-                                                       wrapped_hblks, hbp);
-                               if (!error)
-                                       error = XFS_BUF_SET_PTR(hbp, bufaddr,
+                               if (error)
+                                       goto bread_err2;
+
+                               error = xlog_bread_noalign(log, 0,
+                                                          wrapped_hblks, hbp);
+                               if (error)
+                                       goto bread_err2;
+
+                               error = XFS_BUF_SET_PTR(hbp, bufaddr,
                                                        BBTOB(hblks));
                                if (error)
                                        goto bread_err2;
+
                                if (!offset)
                                        offset = xlog_align(log, 0,
                                                        wrapped_hblks, hbp);
@@ -3619,10 +3652,10 @@ xlog_do_recovery_pass(
 
                        /* Read in data for log record */
                        if (blk_no + bblks <= log->l_logBBsize) {
-                               error = xlog_bread(log, blk_no, bblks, dbp);
+                               error = xlog_bread(log, blk_no, bblks, dbp,
+                                                  &offset);
                                if (error)
                                        goto bread_err2;
-                               offset = xlog_align(log, blk_no, bblks, dbp);
                        } else {
                                /* This log record is split across the
                                 * physical end of log */
@@ -3636,12 +3669,13 @@ xlog_do_recovery_pass(
                                        split_bblks =
                                                log->l_logBBsize - (int)blk_no;
                                        ASSERT(split_bblks > 0);
-                                       if ((error = xlog_bread(log, blk_no,
-                                                       split_bblks, dbp)))
+                                       error = xlog_bread(log, blk_no,
+                                                       split_bblks, dbp,
+                                                       &offset);
+                                       if (error)
                                                goto bread_err2;
-                                       offset = xlog_align(log, blk_no,
-                                                       split_bblks, dbp);
                                }
+
                                /*
                                 * Note: this black magic still works with
                                 * large sector sizes (non-512) only because:
@@ -3658,15 +3692,19 @@ xlog_do_recovery_pass(
                                error = XFS_BUF_SET_PTR(dbp,
                                                bufaddr + BBTOB(split_bblks),
                                                BBTOB(bblks - split_bblks));
-                               if (!error)
-                                       error = xlog_bread(log, wrapped_hblks,
-                                                       bblks - split_bblks,
-                                                       dbp);
-                               if (!error)
-                                       error = XFS_BUF_SET_PTR(dbp, bufaddr,
-                                                       h_size);
                                if (error)
                                        goto bread_err2;
+
+                               error = xlog_bread_noalign(log, wrapped_hblks,
+                                               bblks - split_bblks,
+                                               dbp);
+                               if (error)
+                                       goto bread_err2;
+
+                               error = XFS_BUF_SET_PTR(dbp, bufaddr, h_size);
+                               if (error)
+                                       goto bread_err2;
+
                                if (!offset)
                                        offset = xlog_align(log, wrapped_hblks,
                                                bblks - split_bblks, dbp);
@@ -3683,17 +3721,21 @@ xlog_do_recovery_pass(
 
                /* read first part of physical log */
                while (blk_no < head_blk) {
-                       if ((error = xlog_bread(log, blk_no, hblks, hbp)))
+                       error = xlog_bread(log, blk_no, hblks, hbp, &offset);
+                       if (error)
                                goto bread_err2;
-                       offset = xlog_align(log, blk_no, hblks, hbp);
+
                        rhead = (xlog_rec_header_t *)offset;
                        error = xlog_valid_rec_header(log, rhead, blk_no);
                        if (error)
                                goto bread_err2;
+
                        bblks = (int)BTOBB(be32_to_cpu(rhead->h_len));
-                       if ((error = xlog_bread(log, blk_no+hblks, bblks, dbp)))
+                       error = xlog_bread(log, blk_no+hblks, bblks, dbp,
+                                          &offset);
+                       if (error)
                                goto bread_err2;
-                       offset = xlog_align(log, blk_no+hblks, bblks, dbp);
+
                        xlog_unpack_data(rhead, offset, log);
                        if ((error = xlog_recover_process_data(log, rhash,
                                                        rhead, offset, pass)))