^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /* -*- mode: c; c-basic-offset: 8; -*-
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * vim: noexpandtab sw=8 ts=8 sts=0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * resize.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * volume resize.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Inspired by ext3/resize.c.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * Copyright (C) 2007 Oracle. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <cluster/masklog.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include "ocfs2.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include "alloc.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include "dlmglue.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include "inode.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include "journal.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include "super.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include "sysfile.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include "uptodate.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include "ocfs2_trace.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include "buffer_head_io.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include "suballoc.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include "resize.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) * Check whether there are new backup superblocks exist
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) * in the last group. If there are some, mark them or clear
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) * them in the bitmap.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) * Return how many backups we find in the last group.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) static u16 ocfs2_calc_new_backup_super(struct inode *inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) struct ocfs2_group_desc *gd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) u16 cl_cpg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) u16 old_bg_clusters,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) int set)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) u16 backups = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) u32 cluster, lgd_cluster;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) u64 blkno, gd_blkno, lgd_blkno = le64_to_cpu(gd->bg_blkno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) for (i = 0; i < OCFS2_MAX_BACKUP_SUPERBLOCKS; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) blkno = ocfs2_backup_super_blkno(inode->i_sb, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) cluster = ocfs2_blocks_to_clusters(inode->i_sb, blkno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) gd_blkno = ocfs2_which_cluster_group(inode, cluster);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) if (gd_blkno < lgd_blkno)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) else if (gd_blkno > lgd_blkno)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) /* check if already done backup super */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) lgd_cluster = ocfs2_blocks_to_clusters(inode->i_sb, lgd_blkno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) lgd_cluster += old_bg_clusters;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) if (lgd_cluster >= cluster)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) if (set)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) ocfs2_set_bit(cluster % cl_cpg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) (unsigned long *)gd->bg_bitmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) ocfs2_clear_bit(cluster % cl_cpg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) (unsigned long *)gd->bg_bitmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) backups++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) return backups;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) static int ocfs2_update_last_group_and_inode(handle_t *handle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) struct inode *bm_inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) struct buffer_head *bm_bh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) struct buffer_head *group_bh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) u32 first_new_cluster,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) int new_clusters)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) struct ocfs2_super *osb = OCFS2_SB(bm_inode->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) struct ocfs2_dinode *fe = (struct ocfs2_dinode *) bm_bh->b_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) struct ocfs2_chain_list *cl = &fe->id2.i_chain;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) struct ocfs2_chain_rec *cr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) struct ocfs2_group_desc *group;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) u16 chain, num_bits, backups = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) u16 cl_bpc = le16_to_cpu(cl->cl_bpc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) u16 cl_cpg = le16_to_cpu(cl->cl_cpg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) u16 old_bg_clusters;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) trace_ocfs2_update_last_group_and_inode(new_clusters,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) first_new_cluster);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) ret = ocfs2_journal_access_gd(handle, INODE_CACHE(bm_inode),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) group_bh, OCFS2_JOURNAL_ACCESS_WRITE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) mlog_errno(ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) group = (struct ocfs2_group_desc *)group_bh->b_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) old_bg_clusters = le16_to_cpu(group->bg_bits) / cl_bpc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) /* update the group first. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) num_bits = new_clusters * cl_bpc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) le16_add_cpu(&group->bg_bits, num_bits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) le16_add_cpu(&group->bg_free_bits_count, num_bits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) * check whether there are some new backup superblocks exist in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) * this group and update the group bitmap accordingly.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) if (OCFS2_HAS_COMPAT_FEATURE(osb->sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) OCFS2_FEATURE_COMPAT_BACKUP_SB)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) backups = ocfs2_calc_new_backup_super(bm_inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) group,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) cl_cpg, old_bg_clusters, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) le16_add_cpu(&group->bg_free_bits_count, -1 * backups);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) ocfs2_journal_dirty(handle, group_bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) /* update the inode accordingly. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) ret = ocfs2_journal_access_di(handle, INODE_CACHE(bm_inode), bm_bh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) OCFS2_JOURNAL_ACCESS_WRITE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) mlog_errno(ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) goto out_rollback;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) chain = le16_to_cpu(group->bg_chain);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) cr = (&cl->cl_recs[chain]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) le32_add_cpu(&cr->c_total, num_bits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) le32_add_cpu(&cr->c_free, num_bits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) le32_add_cpu(&fe->id1.bitmap1.i_total, num_bits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) le32_add_cpu(&fe->i_clusters, new_clusters);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) if (backups) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) le32_add_cpu(&cr->c_free, -1 * backups);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) le32_add_cpu(&fe->id1.bitmap1.i_used, backups);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) spin_lock(&OCFS2_I(bm_inode)->ip_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) OCFS2_I(bm_inode)->ip_clusters = le32_to_cpu(fe->i_clusters);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) le64_add_cpu(&fe->i_size, (u64)new_clusters << osb->s_clustersize_bits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) spin_unlock(&OCFS2_I(bm_inode)->ip_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) i_size_write(bm_inode, le64_to_cpu(fe->i_size));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) ocfs2_journal_dirty(handle, bm_bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) out_rollback:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) ocfs2_calc_new_backup_super(bm_inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) group,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) cl_cpg, old_bg_clusters, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) le16_add_cpu(&group->bg_free_bits_count, backups);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) le16_add_cpu(&group->bg_bits, -1 * num_bits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) le16_add_cpu(&group->bg_free_bits_count, -1 * num_bits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) mlog_errno(ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) static int update_backups(struct inode * inode, u32 clusters, char *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) int i, ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) u32 cluster;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) u64 blkno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) struct buffer_head *backup = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) struct ocfs2_dinode *backup_di = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) /* calculate the real backups we need to update. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) for (i = 0; i < OCFS2_MAX_BACKUP_SUPERBLOCKS; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) blkno = ocfs2_backup_super_blkno(inode->i_sb, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) cluster = ocfs2_blocks_to_clusters(inode->i_sb, blkno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) if (cluster >= clusters)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) ret = ocfs2_read_blocks_sync(osb, blkno, 1, &backup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) mlog_errno(ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) memcpy(backup->b_data, data, inode->i_sb->s_blocksize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) backup_di = (struct ocfs2_dinode *)backup->b_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) backup_di->i_blkno = cpu_to_le64(blkno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) ret = ocfs2_write_super_or_backup(osb, backup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) brelse(backup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) backup = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) mlog_errno(ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) static void ocfs2_update_super_and_backups(struct inode *inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) int new_clusters)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) u32 clusters = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) struct buffer_head *super_bh = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) struct ocfs2_dinode *super_di = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) * update the superblock last.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) * It doesn't matter if the write failed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) ret = ocfs2_read_blocks_sync(osb, OCFS2_SUPER_BLOCK_BLKNO, 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) &super_bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) mlog_errno(ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) super_di = (struct ocfs2_dinode *)super_bh->b_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) le32_add_cpu(&super_di->i_clusters, new_clusters);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) clusters = le32_to_cpu(super_di->i_clusters);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) ret = ocfs2_write_super_or_backup(osb, super_bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) mlog_errno(ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) if (OCFS2_HAS_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_COMPAT_BACKUP_SB))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) ret = update_backups(inode, clusters, super_bh->b_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) brelse(super_bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) printk(KERN_WARNING "ocfs2: Failed to update super blocks on %s"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) " during fs resize. This condition is not fatal,"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) " but fsck.ocfs2 should be run to fix it\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) osb->dev_str);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) * Extend the filesystem to the new number of clusters specified. This entry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) * point is only used to extend the current filesystem to the end of the last
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) * existing group.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) int ocfs2_group_extend(struct inode * inode, int new_clusters)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) handle_t *handle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) struct buffer_head *main_bm_bh = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) struct buffer_head *group_bh = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) struct inode *main_bm_inode = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) struct ocfs2_dinode *fe = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) struct ocfs2_group_desc *group = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) u16 cl_bpc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) u32 first_new_cluster;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) u64 lgd_blkno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) if (ocfs2_is_hard_readonly(osb) || ocfs2_is_soft_readonly(osb))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) return -EROFS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) if (new_clusters < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) else if (new_clusters == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) main_bm_inode = ocfs2_get_system_file_inode(osb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) GLOBAL_BITMAP_SYSTEM_INODE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) OCFS2_INVALID_SLOT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) if (!main_bm_inode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) mlog_errno(ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) inode_lock(main_bm_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) ret = ocfs2_inode_lock(main_bm_inode, &main_bm_bh, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) mlog_errno(ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) goto out_mutex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) fe = (struct ocfs2_dinode *)main_bm_bh->b_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) /* main_bm_bh is validated by inode read inside ocfs2_inode_lock(),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) * so any corruption is a code bug. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) BUG_ON(!OCFS2_IS_VALID_DINODE(fe));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) if (le16_to_cpu(fe->id2.i_chain.cl_cpg) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) ocfs2_group_bitmap_size(osb->sb, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) osb->s_feature_incompat) * 8) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) mlog(ML_ERROR, "The disk is too old and small. "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) "Force to do offline resize.");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) first_new_cluster = le32_to_cpu(fe->i_clusters);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) lgd_blkno = ocfs2_which_cluster_group(main_bm_inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) first_new_cluster - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) ret = ocfs2_read_group_descriptor(main_bm_inode, fe, lgd_blkno,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) &group_bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) mlog_errno(ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) group = (struct ocfs2_group_desc *)group_bh->b_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) cl_bpc = le16_to_cpu(fe->id2.i_chain.cl_bpc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) if (le16_to_cpu(group->bg_bits) / cl_bpc + new_clusters >
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) le16_to_cpu(fe->id2.i_chain.cl_cpg)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) trace_ocfs2_group_extend(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) (unsigned long long)le64_to_cpu(group->bg_blkno), new_clusters);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) handle = ocfs2_start_trans(osb, OCFS2_GROUP_EXTEND_CREDITS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) if (IS_ERR(handle)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) mlog_errno(PTR_ERR(handle));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) /* update the last group descriptor and inode. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) ret = ocfs2_update_last_group_and_inode(handle, main_bm_inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) main_bm_bh, group_bh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) first_new_cluster,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) new_clusters);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) mlog_errno(ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) goto out_commit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) ocfs2_update_super_and_backups(main_bm_inode, new_clusters);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) out_commit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) ocfs2_commit_trans(osb, handle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) out_unlock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) brelse(group_bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) brelse(main_bm_bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) ocfs2_inode_unlock(main_bm_inode, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) out_mutex:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) inode_unlock(main_bm_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) iput(main_bm_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) static int ocfs2_check_new_group(struct inode *inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) struct ocfs2_dinode *di,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) struct ocfs2_new_group_input *input,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) struct buffer_head *group_bh)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) struct ocfs2_group_desc *gd =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) (struct ocfs2_group_desc *)group_bh->b_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) u16 cl_bpc = le16_to_cpu(di->id2.i_chain.cl_bpc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) ret = ocfs2_check_group_descriptor(inode->i_sb, di, group_bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) if (le16_to_cpu(gd->bg_chain) != input->chain)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) mlog(ML_ERROR, "Group descriptor # %llu has bad chain %u "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) "while input has %u set.\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) (unsigned long long)le64_to_cpu(gd->bg_blkno),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) le16_to_cpu(gd->bg_chain), input->chain);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) else if (le16_to_cpu(gd->bg_bits) != input->clusters * cl_bpc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) mlog(ML_ERROR, "Group descriptor # %llu has bit count %u but "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) "input has %u clusters set\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) (unsigned long long)le64_to_cpu(gd->bg_blkno),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) le16_to_cpu(gd->bg_bits), input->clusters);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) else if (le16_to_cpu(gd->bg_free_bits_count) != input->frees * cl_bpc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) mlog(ML_ERROR, "Group descriptor # %llu has free bit count %u "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) "but it should have %u set\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) (unsigned long long)le64_to_cpu(gd->bg_blkno),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) le16_to_cpu(gd->bg_bits),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) input->frees * cl_bpc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) static int ocfs2_verify_group_and_input(struct inode *inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) struct ocfs2_dinode *di,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) struct ocfs2_new_group_input *input,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) struct buffer_head *group_bh)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) u16 cl_count = le16_to_cpu(di->id2.i_chain.cl_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) u16 cl_cpg = le16_to_cpu(di->id2.i_chain.cl_cpg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) u16 next_free = le16_to_cpu(di->id2.i_chain.cl_next_free_rec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) u32 cluster = ocfs2_blocks_to_clusters(inode->i_sb, input->group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) u32 total_clusters = le32_to_cpu(di->i_clusters);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) int ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) if (cluster < total_clusters)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) mlog(ML_ERROR, "add a group which is in the current volume.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) else if (input->chain >= cl_count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) mlog(ML_ERROR, "input chain exceeds the limit.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) else if (next_free != cl_count && next_free != input->chain)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) mlog(ML_ERROR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) "the add group should be in chain %u\n", next_free);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) else if (total_clusters + input->clusters < total_clusters)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) mlog(ML_ERROR, "add group's clusters overflow.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) else if (input->clusters > cl_cpg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) mlog(ML_ERROR, "the cluster exceeds the maximum of a group\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) else if (input->frees > input->clusters)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) mlog(ML_ERROR, "the free cluster exceeds the total clusters\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) else if (total_clusters % cl_cpg != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) mlog(ML_ERROR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) "the last group isn't full. Use group extend first.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) else if (input->group != ocfs2_which_cluster_group(inode, cluster))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) mlog(ML_ERROR, "group blkno is invalid\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) else if ((ret = ocfs2_check_new_group(inode, di, input, group_bh)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) mlog(ML_ERROR, "group descriptor check failed.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) /* Add a new group descriptor to global_bitmap. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) int ocfs2_group_add(struct inode *inode, struct ocfs2_new_group_input *input)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) handle_t *handle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) struct buffer_head *main_bm_bh = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) struct inode *main_bm_inode = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) struct ocfs2_dinode *fe = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) struct buffer_head *group_bh = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) struct ocfs2_group_desc *group = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) struct ocfs2_chain_list *cl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) struct ocfs2_chain_rec *cr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) u16 cl_bpc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) u64 bg_ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) if (ocfs2_is_hard_readonly(osb) || ocfs2_is_soft_readonly(osb))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) return -EROFS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) main_bm_inode = ocfs2_get_system_file_inode(osb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) GLOBAL_BITMAP_SYSTEM_INODE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) OCFS2_INVALID_SLOT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) if (!main_bm_inode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) mlog_errno(ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) inode_lock(main_bm_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) ret = ocfs2_inode_lock(main_bm_inode, &main_bm_bh, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) mlog_errno(ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) goto out_mutex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) fe = (struct ocfs2_dinode *)main_bm_bh->b_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) if (le16_to_cpu(fe->id2.i_chain.cl_cpg) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) ocfs2_group_bitmap_size(osb->sb, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) osb->s_feature_incompat) * 8) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) mlog(ML_ERROR, "The disk is too old and small."
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) " Force to do offline resize.");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) ret = ocfs2_read_blocks_sync(osb, input->group, 1, &group_bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) mlog(ML_ERROR, "Can't read the group descriptor # %llu "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) "from the device.", (unsigned long long)input->group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), group_bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) ret = ocfs2_verify_group_and_input(main_bm_inode, fe, input, group_bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) mlog_errno(ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) goto out_free_group_bh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) trace_ocfs2_group_add((unsigned long long)input->group,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) input->chain, input->clusters, input->frees);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) handle = ocfs2_start_trans(osb, OCFS2_GROUP_ADD_CREDITS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) if (IS_ERR(handle)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) mlog_errno(PTR_ERR(handle));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) goto out_free_group_bh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) cl_bpc = le16_to_cpu(fe->id2.i_chain.cl_bpc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) cl = &fe->id2.i_chain;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) cr = &cl->cl_recs[input->chain];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) ret = ocfs2_journal_access_gd(handle, INODE_CACHE(main_bm_inode),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) group_bh, OCFS2_JOURNAL_ACCESS_WRITE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) mlog_errno(ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) goto out_commit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) group = (struct ocfs2_group_desc *)group_bh->b_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) bg_ptr = le64_to_cpu(group->bg_next_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) group->bg_next_group = cr->c_blkno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) ocfs2_journal_dirty(handle, group_bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) ret = ocfs2_journal_access_di(handle, INODE_CACHE(main_bm_inode),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) main_bm_bh, OCFS2_JOURNAL_ACCESS_WRITE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) group->bg_next_group = cpu_to_le64(bg_ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) mlog_errno(ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) goto out_commit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) if (input->chain == le16_to_cpu(cl->cl_next_free_rec)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) le16_add_cpu(&cl->cl_next_free_rec, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) memset(cr, 0, sizeof(struct ocfs2_chain_rec));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) cr->c_blkno = cpu_to_le64(input->group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) le32_add_cpu(&cr->c_total, input->clusters * cl_bpc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) le32_add_cpu(&cr->c_free, input->frees * cl_bpc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) le32_add_cpu(&fe->id1.bitmap1.i_total, input->clusters *cl_bpc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) le32_add_cpu(&fe->id1.bitmap1.i_used,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) (input->clusters - input->frees) * cl_bpc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) le32_add_cpu(&fe->i_clusters, input->clusters);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) ocfs2_journal_dirty(handle, main_bm_bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) spin_lock(&OCFS2_I(main_bm_inode)->ip_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) OCFS2_I(main_bm_inode)->ip_clusters = le32_to_cpu(fe->i_clusters);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) le64_add_cpu(&fe->i_size, (u64)input->clusters << osb->s_clustersize_bits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) spin_unlock(&OCFS2_I(main_bm_inode)->ip_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) i_size_write(main_bm_inode, le64_to_cpu(fe->i_size));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) ocfs2_update_super_and_backups(main_bm_inode, input->clusters);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) out_commit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) ocfs2_commit_trans(osb, handle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) out_free_group_bh:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) brelse(group_bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) out_unlock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) brelse(main_bm_bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) ocfs2_inode_unlock(main_bm_inode, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) out_mutex:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) inode_unlock(main_bm_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) iput(main_bm_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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