| /* |
| * Copyright (c) 2000-2001,2004-2005 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 |
| */ |
| |
| /* |
| * maxtrres.c |
| * |
| * Compute the maximum transaction reservation for a legal combination |
| * of sector size, block size, inode size, directory version, and |
| * directory block size. |
| */ |
| |
| #include "libxfs.h" |
| #include "xfs_multidisk.h" |
| |
| int |
| max_trans_res( |
| unsigned long agsize, |
| int crcs_enabled, |
| int dirversion, |
| int sectorlog, |
| int blocklog, |
| int inodelog, |
| int dirblocklog, |
| int logversion, |
| int log_sunit, |
| int finobt, |
| int rmapbt, |
| int reflink, |
| int inode_align) |
| { |
| xfs_sb_t *sbp; |
| xfs_mount_t mount; |
| int maxfsb; |
| |
| memset(&mount, 0, sizeof(mount)); |
| sbp = &mount.m_sb; |
| sbp->sb_magicnum = XFS_SB_MAGIC; |
| sbp->sb_sectlog = sectorlog; |
| sbp->sb_sectsize = 1 << sbp->sb_sectlog; |
| sbp->sb_blocklog = blocklog; |
| sbp->sb_blocksize = 1 << blocklog; |
| sbp->sb_agblocks = agsize; |
| sbp->sb_agblklog = (uint8_t)libxfs_log2_roundup((unsigned int)agsize); |
| sbp->sb_inodelog = inodelog; |
| sbp->sb_inopblog = blocklog - inodelog; |
| sbp->sb_inodesize = 1 << inodelog; |
| sbp->sb_inopblock = 1 << (blocklog - inodelog); |
| sbp->sb_dirblklog = dirblocklog - blocklog; |
| |
| if (inode_align) { |
| int cluster_size = XFS_INODE_BIG_CLUSTER_SIZE; |
| if (crcs_enabled) |
| cluster_size *= sbp->sb_inodesize / XFS_DINODE_MIN_SIZE; |
| sbp->sb_inoalignmt = cluster_size >> blocklog; |
| } |
| |
| if (log_sunit > 0) { |
| log_sunit <<= blocklog; |
| logversion = 2; |
| } else |
| log_sunit = 1; |
| sbp->sb_logsunit = log_sunit; |
| |
| sbp->sb_versionnum = |
| (crcs_enabled ? XFS_SB_VERSION_5 : XFS_SB_VERSION_4) | |
| (dirversion == 2 ? XFS_SB_VERSION_DIRV2BIT : 0) | |
| (logversion > 1 ? XFS_SB_VERSION_LOGV2BIT : 0) | |
| XFS_DFL_SB_VERSION_BITS; |
| if (finobt) |
| sbp->sb_features_ro_compat |= XFS_SB_FEAT_RO_COMPAT_FINOBT; |
| if (rmapbt) |
| sbp->sb_features_ro_compat |= XFS_SB_FEAT_RO_COMPAT_RMAPBT; |
| if (reflink) |
| sbp->sb_features_ro_compat |= XFS_SB_FEAT_RO_COMPAT_REFLINK; |
| |
| libxfs_mount(&mount, sbp, 0,0,0,0); |
| maxfsb = libxfs_log_calc_minimum_size(&mount); |
| libxfs_umount(&mount); |
| |
| #if 0 |
| printf("#define\tMAXTRRES_S%d_B%d_I%d_D%d_V%d_LSU%d\t%d\n", |
| sectorlog, blocklog, inodelog, dirblocklog, dirversion, |
| log_sunit, maxfsb); |
| #endif |
| |
| return maxfsb; |
| } |