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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 | /* * Copyright (c) 2000,2005 Silicon Graphics, Inc. * All Rights Reserved. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation. * * This program is distributed in the hope that it would be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #include "xfs.h" #include "xfs_fs.h" #include "xfs_types.h" #include "xfs_log.h" #include "xfs_inum.h" #include "xfs_trans.h" #include "xfs_sb.h" #include "xfs_ag.h" #include "xfs_mount.h" #include "xfs_trans_priv.h" #include "xfs_extfree_item.h" /* * This routine is called to allocate an "extent free intention" * log item that will hold nextents worth of extents. The * caller must use all nextents extents, because we are not * flexible about this at all. */ xfs_efi_log_item_t * xfs_trans_get_efi(xfs_trans_t *tp, uint nextents) { xfs_efi_log_item_t *efip; ASSERT(tp != NULL); ASSERT(nextents > 0); efip = xfs_efi_init(tp->t_mountp, nextents); ASSERT(efip != NULL); /* * Get a log_item_desc to point at the new item. */ xfs_trans_add_item(tp, &efip->efi_item); return efip; } /* * This routine is called to indicate that the described * extent is to be logged as needing to be freed. It should * be called once for each extent to be freed. */ void xfs_trans_log_efi_extent(xfs_trans_t *tp, xfs_efi_log_item_t *efip, xfs_fsblock_t start_block, xfs_extlen_t ext_len) { uint next_extent; xfs_extent_t *extp; tp->t_flags |= XFS_TRANS_DIRTY; efip->efi_item.li_desc->lid_flags |= XFS_LID_DIRTY; /* * atomic_inc_return gives us the value after the increment; * we want to use it as an array index so we need to subtract 1 from * it. */ next_extent = atomic_inc_return(&efip->efi_next_extent) - 1; ASSERT(next_extent < efip->efi_format.efi_nextents); extp = &(efip->efi_format.efi_extents[next_extent]); extp->ext_start = start_block; extp->ext_len = ext_len; } /* * This routine is called to allocate an "extent free done" * log item that will hold nextents worth of extents. The * caller must use all nextents extents, because we are not * flexible about this at all. */ xfs_efd_log_item_t * xfs_trans_get_efd(xfs_trans_t *tp, xfs_efi_log_item_t *efip, uint nextents) { xfs_efd_log_item_t *efdp; ASSERT(tp != NULL); ASSERT(nextents > 0); efdp = xfs_efd_init(tp->t_mountp, efip, nextents); ASSERT(efdp != NULL); /* * Get a log_item_desc to point at the new item. */ xfs_trans_add_item(tp, &efdp->efd_item); return efdp; } /* * This routine is called to indicate that the described * extent is to be logged as having been freed. It should * be called once for each extent freed. */ void xfs_trans_log_efd_extent(xfs_trans_t *tp, xfs_efd_log_item_t *efdp, xfs_fsblock_t start_block, xfs_extlen_t ext_len) { uint next_extent; xfs_extent_t *extp; tp->t_flags |= XFS_TRANS_DIRTY; efdp->efd_item.li_desc->lid_flags |= XFS_LID_DIRTY; next_extent = efdp->efd_next_extent; ASSERT(next_extent < efdp->efd_format.efd_nextents); extp = &(efdp->efd_format.efd_extents[next_extent]); extp->ext_start = start_block; extp->ext_len = ext_len; efdp->efd_next_extent++; } |