.specs = xfs_param_specs,
};
-static int
-suffix_kstrtoint(
- const char *s,
- unsigned int base,
- int *res)
-{
- int last, shift_left_factor = 0, _res;
- char *value;
- int ret = 0;
-
- value = kstrdup(s, GFP_KERNEL);
- if (!value)
- return -ENOMEM;
-
- last = strlen(value) - 1;
- if (value[last] == 'K' || value[last] == 'k') {
- shift_left_factor = 10;
- value[last] = '\0';
- }
- if (value[last] == 'M' || value[last] == 'm') {
- shift_left_factor = 20;
- value[last] = '\0';
- }
- if (value[last] == 'G' || value[last] == 'g') {
- shift_left_factor = 30;
- value[last] = '\0';
- }
-
- if (kstrtoint(value, base, &_res))
- ret = -EINVAL;
- kfree(value);
- *res = _res << shift_left_factor;
- return ret;
-}
-
-/*
- * Set mount state from a mount option.
- *
- * NOTE: mp->m_super is NULL here!
- */
-static int
-xfs_fc_parse_param(
- struct fs_context *fc,
- struct fs_parameter *param)
-{
- struct xfs_mount *mp = fc->s_fs_info;
- struct fs_parse_result result;
- int size = 0;
- int opt;
-
- opt = fs_parse(fc, &xfs_fs_parameters, param, &result);
- if (opt < 0)
- return opt;
-
- switch (opt) {
- case Opt_logbufs:
- mp->m_logbufs = result.uint_32;
- return 0;
- case Opt_logbsize:
- if (suffix_kstrtoint(param->string, 10, &mp->m_logbsize))
- return -EINVAL;
- return 0;
- case Opt_logdev:
- kfree(mp->m_logname);
- mp->m_logname = kstrdup(param->string, GFP_KERNEL);
- if (!mp->m_logname)
- return -ENOMEM;
- return 0;
- case Opt_rtdev:
- kfree(mp->m_rtname);
- mp->m_rtname = kstrdup(param->string, GFP_KERNEL);
- if (!mp->m_rtname)
- return -ENOMEM;
- return 0;
- case Opt_allocsize:
- if (suffix_kstrtoint(param->string, 10, &size))
- return -EINVAL;
- mp->m_allocsize_log = ffs(size) - 1;
- mp->m_flags |= XFS_MOUNT_ALLOCSIZE;
- return 0;
- case Opt_grpid:
- case Opt_bsdgroups:
- mp->m_flags |= XFS_MOUNT_GRPID;
- return 0;
- case Opt_nogrpid:
- case Opt_sysvgroups:
- mp->m_flags &= ~XFS_MOUNT_GRPID;
- return 0;
- case Opt_wsync:
- mp->m_flags |= XFS_MOUNT_WSYNC;
- return 0;
- case Opt_norecovery:
- mp->m_flags |= XFS_MOUNT_NORECOVERY;
- return 0;
- case Opt_noalign:
- mp->m_flags |= XFS_MOUNT_NOALIGN;
- return 0;
- case Opt_swalloc:
- mp->m_flags |= XFS_MOUNT_SWALLOC;
- return 0;
- case Opt_sunit:
- mp->m_dalign = result.uint_32;
- return 0;
- case Opt_swidth:
- mp->m_swidth = result.uint_32;
- return 0;
- case Opt_inode32:
- mp->m_flags |= XFS_MOUNT_SMALL_INUMS;
- return 0;
- case Opt_inode64:
- mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS;
- return 0;
- case Opt_nouuid:
- mp->m_flags |= XFS_MOUNT_NOUUID;
- return 0;
- case Opt_ikeep:
- mp->m_flags |= XFS_MOUNT_IKEEP;
- return 0;
- case Opt_noikeep:
- mp->m_flags &= ~XFS_MOUNT_IKEEP;
- return 0;
- case Opt_largeio:
- mp->m_flags |= XFS_MOUNT_LARGEIO;
- return 0;
- case Opt_nolargeio:
- mp->m_flags &= ~XFS_MOUNT_LARGEIO;
- return 0;
- case Opt_attr2:
- mp->m_flags |= XFS_MOUNT_ATTR2;
- return 0;
- case Opt_noattr2:
- mp->m_flags &= ~XFS_MOUNT_ATTR2;
- mp->m_flags |= XFS_MOUNT_NOATTR2;
- return 0;
- case Opt_filestreams:
- mp->m_flags |= XFS_MOUNT_FILESTREAMS;
- return 0;
- case Opt_noquota:
- mp->m_qflags &= ~XFS_ALL_QUOTA_ACCT;
- mp->m_qflags &= ~XFS_ALL_QUOTA_ENFD;
- mp->m_qflags &= ~XFS_ALL_QUOTA_ACTIVE;
- return 0;
- case Opt_quota:
- case Opt_uquota:
- case Opt_usrquota:
- mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE |
- XFS_UQUOTA_ENFD);
- return 0;
- case Opt_qnoenforce:
- case Opt_uqnoenforce:
- mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE);
- mp->m_qflags &= ~XFS_UQUOTA_ENFD;
- return 0;
- case Opt_pquota:
- case Opt_prjquota:
- mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE |
- XFS_PQUOTA_ENFD);
- return 0;
- case Opt_pqnoenforce:
- mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE);
- mp->m_qflags &= ~XFS_PQUOTA_ENFD;
- return 0;
- case Opt_gquota:
- case Opt_grpquota:
- mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE |
- XFS_GQUOTA_ENFD);
- return 0;
- case Opt_gqnoenforce:
- mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE);
- mp->m_qflags &= ~XFS_GQUOTA_ENFD;
- return 0;
- case Opt_discard:
- mp->m_flags |= XFS_MOUNT_DISCARD;
- return 0;
- case Opt_nodiscard:
- mp->m_flags &= ~XFS_MOUNT_DISCARD;
- return 0;
-#ifdef CONFIG_FS_DAX
- case Opt_dax:
- mp->m_flags |= XFS_MOUNT_DAX;
- return 0;
-#endif
- default:
- xfs_warn(mp, "unknown mount option [%s].", param->key);
- return -EINVAL;
- }
-
- return 0;
-}
-
-static int
-xfs_fc_validate_params(
- struct xfs_mount *mp)
-{
- /*
- * no recovery flag requires a read-only mount
- */
- if ((mp->m_flags & XFS_MOUNT_NORECOVERY) &&
- !(mp->m_flags & XFS_MOUNT_RDONLY)) {
- xfs_warn(mp, "no-recovery mounts must be read-only.");
- return -EINVAL;
- }
-
- if ((mp->m_flags & XFS_MOUNT_NOALIGN) &&
- (mp->m_dalign || mp->m_swidth)) {
- xfs_warn(mp,
- "sunit and swidth options incompatible with the noalign option");
- return -EINVAL;
- }
-
- if (!IS_ENABLED(CONFIG_XFS_QUOTA) && mp->m_qflags != 0) {
- xfs_warn(mp, "quota support not available in this kernel.");
- return -EINVAL;
- }
-
- if ((mp->m_dalign && !mp->m_swidth) ||
- (!mp->m_dalign && mp->m_swidth)) {
- xfs_warn(mp, "sunit and swidth must be specified together");
- return -EINVAL;
- }
-
- if (mp->m_dalign && (mp->m_swidth % mp->m_dalign != 0)) {
- xfs_warn(mp,
- "stripe width (%d) must be a multiple of the stripe unit (%d)",
- mp->m_swidth, mp->m_dalign);
- return -EINVAL;
- }
-
- if (mp->m_logbufs != -1 &&
- mp->m_logbufs != 0 &&
- (mp->m_logbufs < XLOG_MIN_ICLOGS ||
- mp->m_logbufs > XLOG_MAX_ICLOGS)) {
- xfs_warn(mp, "invalid logbufs value: %d [not %d-%d]",
- mp->m_logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS);
- return -EINVAL;
- }
- if (mp->m_logbsize != -1 &&
- mp->m_logbsize != 0 &&
- (mp->m_logbsize < XLOG_MIN_RECORD_BSIZE ||
- mp->m_logbsize > XLOG_MAX_RECORD_BSIZE ||
- !is_power_of_2(mp->m_logbsize))) {
- xfs_warn(mp,
- "invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]",
- mp->m_logbsize);
- return -EINVAL;
- }
-
- if ((mp->m_flags & XFS_MOUNT_ALLOCSIZE) &&
- (mp->m_allocsize_log > XFS_MAX_IO_LOG ||
- mp->m_allocsize_log < XFS_MIN_IO_LOG)) {
- xfs_warn(mp, "invalid log iosize: %d [not %d-%d]",
- mp->m_allocsize_log, XFS_MIN_IO_LOG, XFS_MAX_IO_LOG);
- return -EINVAL;
- }
-
- return 0;
-}
-
struct proc_xfs_info {
uint64_t flag;
char *str;
xfs_reserve_blocks(mp, &resblks, NULL);
}
-/*
- * Trigger writeback of all the dirty metadata in the file system.
- *
- * This ensures that the metadata is written to their location on disk rather
- * than just existing in transactions in the log. This means after a quiesce
- * there is no log replay required to write the inodes to disk - this is the
- * primary difference between a sync and a quiesce.
- *
- * Note: xfs_log_quiesce() stops background log work - the callers must ensure
- * it is started again when appropriate.
- */
-void
-xfs_quiesce_attr(
- struct xfs_mount *mp)
+/*
+ * Trigger writeback of all the dirty metadata in the file system.
+ *
+ * This ensures that the metadata is written to their location on disk rather
+ * than just existing in transactions in the log. This means after a quiesce
+ * there is no log replay required to write the inodes to disk - this is the
+ * primary difference between a sync and a quiesce.
+ *
+ * Note: xfs_log_quiesce() stops background log work - the callers must ensure
+ * it is started again when appropriate.
+ */
+void
+xfs_quiesce_attr(
+ struct xfs_mount *mp)
+{
+ int error = 0;
+
+ /* wait for all modifications to complete */
+ while (atomic_read(&mp->m_active_trans) > 0)
+ delay(100);
+
+ /* force the log to unpin objects from the now complete transactions */
+ xfs_log_force(mp, XFS_LOG_SYNC);
+
+ /* reclaim inodes to do any IO before the freeze completes */
+ xfs_reclaim_inodes(mp, 0);
+ xfs_reclaim_inodes(mp, SYNC_WAIT);
+
+ /* Push the superblock and write an unmount record */
+ error = xfs_log_sbcount(mp);
+ if (error)
+ xfs_warn(mp, "xfs_attr_quiesce: failed to log sb changes. "
+ "Frozen image may not be consistent.");
+ /*
+ * Just warn here till VFS can correctly support
+ * read-only remount without racing.
+ */
+ WARN_ON(atomic_read(&mp->m_active_trans) != 0);
+
+ xfs_log_quiesce(mp);
+}
+
+/*
+ * Second stage of a freeze. The data is already frozen so we only
+ * need to take care of the metadata. Once that's done sync the superblock
+ * to the log to dirty it in case of a crash while frozen. This ensures that we
+ * will recover the unlinked inode lists on the next mount.
+ */
+STATIC int
+xfs_fs_freeze(
+ struct super_block *sb)
+{
+ struct xfs_mount *mp = XFS_M(sb);
+
+ xfs_stop_block_reaping(mp);
+ xfs_save_resvblks(mp);
+ xfs_quiesce_attr(mp);
+ return xfs_sync_sb(mp, true);
+}
+
+STATIC int
+xfs_fs_unfreeze(
+ struct super_block *sb)
+{
+ struct xfs_mount *mp = XFS_M(sb);
+
+ xfs_restore_resvblks(mp);
+ xfs_log_work_queue(mp);
+ xfs_start_block_reaping(mp);
+ return 0;
+}
+
+/*
+ * This function fills in xfs_mount_t fields based on mount args.
+ * Note: the superblock _has_ now been read in.
+ */
+STATIC int
+xfs_finish_flags(
+ struct xfs_mount *mp)
+{
+ int ronly = (mp->m_flags & XFS_MOUNT_RDONLY);
+
+ /* Fail a mount where the logbuf is smaller than the log stripe */
+ if (xfs_sb_version_haslogv2(&mp->m_sb)) {
+ if (mp->m_logbsize <= 0 &&
+ mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE) {
+ mp->m_logbsize = mp->m_sb.sb_logsunit;
+ } else if (mp->m_logbsize > 0 &&
+ mp->m_logbsize < mp->m_sb.sb_logsunit) {
+ xfs_warn(mp,
+ "logbuf size must be greater than or equal to log stripe size");
+ return -EINVAL;
+ }
+ } else {
+ /* Fail a mount if the logbuf is larger than 32K */
+ if (mp->m_logbsize > XLOG_BIG_RECORD_BSIZE) {
+ xfs_warn(mp,
+ "logbuf size for version 1 logs must be 16K or 32K");
+ return -EINVAL;
+ }
+ }
+
+ /*
+ * V5 filesystems always use attr2 format for attributes.
+ */
+ if (xfs_sb_version_hascrc(&mp->m_sb) &&
+ (mp->m_flags & XFS_MOUNT_NOATTR2)) {
+ xfs_warn(mp, "Cannot mount a V5 filesystem as noattr2. "
+ "attr2 is always enabled for V5 filesystems.");
+ return -EINVAL;
+ }
+
+ /*
+ * mkfs'ed attr2 will turn on attr2 mount unless explicitly
+ * told by noattr2 to turn it off
+ */
+ if (xfs_sb_version_hasattr2(&mp->m_sb) &&
+ !(mp->m_flags & XFS_MOUNT_NOATTR2))
+ mp->m_flags |= XFS_MOUNT_ATTR2;
+
+ /*
+ * prohibit r/w mounts of read-only filesystems
+ */
+ if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !ronly) {
+ xfs_warn(mp,
+ "cannot mount a read-only filesystem as read-write");
+ return -EROFS;
+ }
+
+ if ((mp->m_qflags & (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE)) &&
+ (mp->m_qflags & (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE)) &&
+ !xfs_sb_version_has_pquotino(&mp->m_sb)) {
+ xfs_warn(mp,
+ "Super block does not support project and group quota together");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int
+xfs_init_percpu_counters(
+ struct xfs_mount *mp)
+{
+ int error;
+
+ error = percpu_counter_init(&mp->m_icount, 0, GFP_KERNEL);
+ if (error)
+ return -ENOMEM;
+
+ error = percpu_counter_init(&mp->m_ifree, 0, GFP_KERNEL);
+ if (error)
+ goto free_icount;
+
+ error = percpu_counter_init(&mp->m_fdblocks, 0, GFP_KERNEL);
+ if (error)
+ goto free_ifree;
+
+ error = percpu_counter_init(&mp->m_delalloc_blks, 0, GFP_KERNEL);
+ if (error)
+ goto free_fdblocks;
+
+ return 0;
+
+free_fdblocks:
+ percpu_counter_destroy(&mp->m_fdblocks);
+free_ifree:
+ percpu_counter_destroy(&mp->m_ifree);
+free_icount:
+ percpu_counter_destroy(&mp->m_icount);
+ return -ENOMEM;
+}
+
+void
+xfs_reinit_percpu_counters(
+ struct xfs_mount *mp)
+{
+ percpu_counter_set(&mp->m_icount, mp->m_sb.sb_icount);
+ percpu_counter_set(&mp->m_ifree, mp->m_sb.sb_ifree);
+ percpu_counter_set(&mp->m_fdblocks, mp->m_sb.sb_fdblocks);
+}
+
+static void
+xfs_destroy_percpu_counters(
+ struct xfs_mount *mp)
+{
+ percpu_counter_destroy(&mp->m_icount);
+ percpu_counter_destroy(&mp->m_ifree);
+ percpu_counter_destroy(&mp->m_fdblocks);
+ ASSERT(XFS_FORCED_SHUTDOWN(mp) ||
+ percpu_counter_sum(&mp->m_delalloc_blks) == 0);
+ percpu_counter_destroy(&mp->m_delalloc_blks);
+}
+
+static void
+xfs_fs_put_super(
+ struct super_block *sb)
+{
+ struct xfs_mount *mp = XFS_M(sb);
+
+ /* if ->fill_super failed, we have no mount to tear down */
+ if (!sb->s_fs_info)
+ return;
+
+ xfs_notice(mp, "Unmounting Filesystem");
+ xfs_filestream_unmount(mp);
+ xfs_unmountfs(mp);
+
+ xfs_freesb(mp);
+ free_percpu(mp->m_stats.xs_stats);
+ xfs_destroy_percpu_counters(mp);
+ xfs_destroy_mount_workqueues(mp);
+ xfs_close_devices(mp);
+
+ sb->s_fs_info = NULL;
+ xfs_mount_free(mp);
+}
+
+static long
+xfs_fs_nr_cached_objects(
+ struct super_block *sb,
+ struct shrink_control *sc)
+{
+ /* Paranoia: catch incorrect calls during mount setup or teardown */
+ if (WARN_ON_ONCE(!sb->s_fs_info))
+ return 0;
+ return xfs_reclaim_inodes_count(XFS_M(sb));
+}
+
+static long
+xfs_fs_free_cached_objects(
+ struct super_block *sb,
+ struct shrink_control *sc)
{
- int error = 0;
+ return xfs_reclaim_inodes_nr(XFS_M(sb), sc->nr_to_scan);
+}
- /* wait for all modifications to complete */
- while (atomic_read(&mp->m_active_trans) > 0)
- delay(100);
+static const struct super_operations xfs_super_operations = {
+ .alloc_inode = xfs_fs_alloc_inode,
+ .destroy_inode = xfs_fs_destroy_inode,
+ .dirty_inode = xfs_fs_dirty_inode,
+ .drop_inode = xfs_fs_drop_inode,
+ .put_super = xfs_fs_put_super,
+ .sync_fs = xfs_fs_sync_fs,
+ .freeze_fs = xfs_fs_freeze,
+ .unfreeze_fs = xfs_fs_unfreeze,
+ .statfs = xfs_fs_statfs,
+ .show_options = xfs_fs_show_options,
+ .nr_cached_objects = xfs_fs_nr_cached_objects,
+ .free_cached_objects = xfs_fs_free_cached_objects,
+};
- /* force the log to unpin objects from the now complete transactions */
- xfs_log_force(mp, XFS_LOG_SYNC);
+static struct xfs_mount *
+xfs_mount_alloc(void)
+{
+ struct xfs_mount *mp;
- /* reclaim inodes to do any IO before the freeze completes */
- xfs_reclaim_inodes(mp, 0);
- xfs_reclaim_inodes(mp, SYNC_WAIT);
+ mp = kmem_alloc(sizeof(struct xfs_mount), KM_ZERO);
+ if (!mp)
+ return NULL;
- /* Push the superblock and write an unmount record */
- error = xfs_log_sbcount(mp);
- if (error)
- xfs_warn(mp, "xfs_attr_quiesce: failed to log sb changes. "
- "Frozen image may not be consistent.");
+ spin_lock_init(&mp->m_sb_lock);
+ spin_lock_init(&mp->m_agirotor_lock);
+ INIT_RADIX_TREE(&mp->m_perag_tree, GFP_ATOMIC);
+ spin_lock_init(&mp->m_perag_lock);
+ mutex_init(&mp->m_growlock);
+ atomic_set(&mp->m_active_trans, 0);
+ INIT_DELAYED_WORK(&mp->m_reclaim_work, xfs_reclaim_worker);
+ INIT_DELAYED_WORK(&mp->m_eofblocks_work, xfs_eofblocks_worker);
+ INIT_DELAYED_WORK(&mp->m_cowblocks_work, xfs_cowblocks_worker);
+ mp->m_kobj.kobject.kset = xfs_kset;
/*
- * Just warn here till VFS can correctly support
- * read-only remount without racing.
+ * We don't create the finobt per-ag space reservation until after log
+ * recovery, so we must set this to true so that an ifree transaction
+ * started during log recovery will not depend on space reservations
+ * for finobt expansion.
*/
- WARN_ON(atomic_read(&mp->m_active_trans) != 0);
+ mp->m_finobt_nores = true;
+ return mp;
+}
- xfs_log_quiesce(mp);
+static int
+suffix_kstrtoint(
+ const char *s,
+ unsigned int base,
+ int *res)
+{
+ int last, shift_left_factor = 0, _res;
+ char *value;
+ int ret = 0;
+
+ value = kstrdup(s, GFP_KERNEL);
+ if (!value)
+ return -ENOMEM;
+
+ last = strlen(value) - 1;
+ if (value[last] == 'K' || value[last] == 'k') {
+ shift_left_factor = 10;
+ value[last] = '\0';
+ }
+ if (value[last] == 'M' || value[last] == 'm') {
+ shift_left_factor = 20;
+ value[last] = '\0';
+ }
+ if (value[last] == 'G' || value[last] == 'g') {
+ shift_left_factor = 30;
+ value[last] = '\0';
+ }
+
+ if (kstrtoint(value, base, &_res))
+ ret = -EINVAL;
+ kfree(value);
+ *res = _res << shift_left_factor;
+ return ret;
}
/*
- * Second stage of a freeze. The data is already frozen so we only
- * need to take care of the metadata. Once that's done sync the superblock
- * to the log to dirty it in case of a crash while frozen. This ensures that we
- * will recover the unlinked inode lists on the next mount.
+ * Set mount state from a mount option.
+ *
+ * NOTE: mp->m_super is NULL here!
*/
-STATIC int
-xfs_fs_freeze(
- struct super_block *sb)
+static int
+xfs_fc_parse_param(
+ struct fs_context *fc,
+ struct fs_parameter *param)
{
- struct xfs_mount *mp = XFS_M(sb);
+ struct xfs_mount *mp = fc->s_fs_info;
+ struct fs_parse_result result;
+ int size = 0;
+ int opt;
- xfs_stop_block_reaping(mp);
- xfs_save_resvblks(mp);
- xfs_quiesce_attr(mp);
- return xfs_sync_sb(mp, true);
-}
+ opt = fs_parse(fc, &xfs_fs_parameters, param, &result);
+ if (opt < 0)
+ return opt;
-STATIC int
-xfs_fs_unfreeze(
- struct super_block *sb)
-{
- struct xfs_mount *mp = XFS_M(sb);
+ switch (opt) {
+ case Opt_logbufs:
+ mp->m_logbufs = result.uint_32;
+ return 0;
+ case Opt_logbsize:
+ if (suffix_kstrtoint(param->string, 10, &mp->m_logbsize))
+ return -EINVAL;
+ return 0;
+ case Opt_logdev:
+ kfree(mp->m_logname);
+ mp->m_logname = kstrdup(param->string, GFP_KERNEL);
+ if (!mp->m_logname)
+ return -ENOMEM;
+ return 0;
+ case Opt_rtdev:
+ kfree(mp->m_rtname);
+ mp->m_rtname = kstrdup(param->string, GFP_KERNEL);
+ if (!mp->m_rtname)
+ return -ENOMEM;
+ return 0;
+ case Opt_allocsize:
+ if (suffix_kstrtoint(param->string, 10, &size))
+ return -EINVAL;
+ mp->m_allocsize_log = ffs(size) - 1;
+ mp->m_flags |= XFS_MOUNT_ALLOCSIZE;
+ return 0;
+ case Opt_grpid:
+ case Opt_bsdgroups:
+ mp->m_flags |= XFS_MOUNT_GRPID;
+ return 0;
+ case Opt_nogrpid:
+ case Opt_sysvgroups:
+ mp->m_flags &= ~XFS_MOUNT_GRPID;
+ return 0;
+ case Opt_wsync:
+ mp->m_flags |= XFS_MOUNT_WSYNC;
+ return 0;
+ case Opt_norecovery:
+ mp->m_flags |= XFS_MOUNT_NORECOVERY;
+ return 0;
+ case Opt_noalign:
+ mp->m_flags |= XFS_MOUNT_NOALIGN;
+ return 0;
+ case Opt_swalloc:
+ mp->m_flags |= XFS_MOUNT_SWALLOC;
+ return 0;
+ case Opt_sunit:
+ mp->m_dalign = result.uint_32;
+ return 0;
+ case Opt_swidth:
+ mp->m_swidth = result.uint_32;
+ return 0;
+ case Opt_inode32:
+ mp->m_flags |= XFS_MOUNT_SMALL_INUMS;
+ return 0;
+ case Opt_inode64:
+ mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS;
+ return 0;
+ case Opt_nouuid:
+ mp->m_flags |= XFS_MOUNT_NOUUID;
+ return 0;
+ case Opt_ikeep:
+ mp->m_flags |= XFS_MOUNT_IKEEP;
+ return 0;
+ case Opt_noikeep:
+ mp->m_flags &= ~XFS_MOUNT_IKEEP;
+ return 0;
+ case Opt_largeio:
+ mp->m_flags |= XFS_MOUNT_LARGEIO;
+ return 0;
+ case Opt_nolargeio:
+ mp->m_flags &= ~XFS_MOUNT_LARGEIO;
+ return 0;
+ case Opt_attr2:
+ mp->m_flags |= XFS_MOUNT_ATTR2;
+ return 0;
+ case Opt_noattr2:
+ mp->m_flags &= ~XFS_MOUNT_ATTR2;
+ mp->m_flags |= XFS_MOUNT_NOATTR2;
+ return 0;
+ case Opt_filestreams:
+ mp->m_flags |= XFS_MOUNT_FILESTREAMS;
+ return 0;
+ case Opt_noquota:
+ mp->m_qflags &= ~XFS_ALL_QUOTA_ACCT;
+ mp->m_qflags &= ~XFS_ALL_QUOTA_ENFD;
+ mp->m_qflags &= ~XFS_ALL_QUOTA_ACTIVE;
+ return 0;
+ case Opt_quota:
+ case Opt_uquota:
+ case Opt_usrquota:
+ mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE |
+ XFS_UQUOTA_ENFD);
+ return 0;
+ case Opt_qnoenforce:
+ case Opt_uqnoenforce:
+ mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE);
+ mp->m_qflags &= ~XFS_UQUOTA_ENFD;
+ return 0;
+ case Opt_pquota:
+ case Opt_prjquota:
+ mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE |
+ XFS_PQUOTA_ENFD);
+ return 0;
+ case Opt_pqnoenforce:
+ mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE);
+ mp->m_qflags &= ~XFS_PQUOTA_ENFD;
+ return 0;
+ case Opt_gquota:
+ case Opt_grpquota:
+ mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE |
+ XFS_GQUOTA_ENFD);
+ return 0;
+ case Opt_gqnoenforce:
+ mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE);
+ mp->m_qflags &= ~XFS_GQUOTA_ENFD;
+ return 0;
+ case Opt_discard:
+ mp->m_flags |= XFS_MOUNT_DISCARD;
+ return 0;
+ case Opt_nodiscard:
+ mp->m_flags &= ~XFS_MOUNT_DISCARD;
+ return 0;
+#ifdef CONFIG_FS_DAX
+ case Opt_dax:
+ mp->m_flags |= XFS_MOUNT_DAX;
+ return 0;
+#endif
+ default:
+ xfs_warn(mp, "unknown mount option [%s].", param->key);
+ return -EINVAL;
+ }
- xfs_restore_resvblks(mp);
- xfs_log_work_queue(mp);
- xfs_start_block_reaping(mp);
return 0;
}
-/*
- * This function fills in xfs_mount_t fields based on mount args.
- * Note: the superblock _has_ now been read in.
- */
-STATIC int
-xfs_finish_flags(
+static int
+xfs_fc_validate_params(
struct xfs_mount *mp)
{
- int ronly = (mp->m_flags & XFS_MOUNT_RDONLY);
-
- /* Fail a mount where the logbuf is smaller than the log stripe */
- if (xfs_sb_version_haslogv2(&mp->m_sb)) {
- if (mp->m_logbsize <= 0 &&
- mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE) {
- mp->m_logbsize = mp->m_sb.sb_logsunit;
- } else if (mp->m_logbsize > 0 &&
- mp->m_logbsize < mp->m_sb.sb_logsunit) {
- xfs_warn(mp,
- "logbuf size must be greater than or equal to log stripe size");
- return -EINVAL;
- }
- } else {
- /* Fail a mount if the logbuf is larger than 32K */
- if (mp->m_logbsize > XLOG_BIG_RECORD_BSIZE) {
- xfs_warn(mp,
- "logbuf size for version 1 logs must be 16K or 32K");
- return -EINVAL;
- }
- }
-
/*
- * V5 filesystems always use attr2 format for attributes.
+ * no recovery flag requires a read-only mount
*/
- if (xfs_sb_version_hascrc(&mp->m_sb) &&
- (mp->m_flags & XFS_MOUNT_NOATTR2)) {
- xfs_warn(mp, "Cannot mount a V5 filesystem as noattr2. "
- "attr2 is always enabled for V5 filesystems.");
+ if ((mp->m_flags & XFS_MOUNT_NORECOVERY) &&
+ !(mp->m_flags & XFS_MOUNT_RDONLY)) {
+ xfs_warn(mp, "no-recovery mounts must be read-only.");
return -EINVAL;
}
- /*
- * mkfs'ed attr2 will turn on attr2 mount unless explicitly
- * told by noattr2 to turn it off
- */
- if (xfs_sb_version_hasattr2(&mp->m_sb) &&
- !(mp->m_flags & XFS_MOUNT_NOATTR2))
- mp->m_flags |= XFS_MOUNT_ATTR2;
-
- /*
- * prohibit r/w mounts of read-only filesystems
- */
- if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !ronly) {
+ if ((mp->m_flags & XFS_MOUNT_NOALIGN) &&
+ (mp->m_dalign || mp->m_swidth)) {
xfs_warn(mp,
- "cannot mount a read-only filesystem as read-write");
- return -EROFS;
+ "sunit and swidth options incompatible with the noalign option");
+ return -EINVAL;
}
- if ((mp->m_qflags & (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE)) &&
- (mp->m_qflags & (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE)) &&
- !xfs_sb_version_has_pquotino(&mp->m_sb)) {
- xfs_warn(mp,
- "Super block does not support project and group quota together");
+ if (!IS_ENABLED(CONFIG_XFS_QUOTA) && mp->m_qflags != 0) {
+ xfs_warn(mp, "quota support not available in this kernel.");
return -EINVAL;
}
- return 0;
-}
-
-static int
-xfs_init_percpu_counters(
- struct xfs_mount *mp)
-{
- int error;
+ if ((mp->m_dalign && !mp->m_swidth) ||
+ (!mp->m_dalign && mp->m_swidth)) {
+ xfs_warn(mp, "sunit and swidth must be specified together");
+ return -EINVAL;
+ }
- error = percpu_counter_init(&mp->m_icount, 0, GFP_KERNEL);
- if (error)
- return -ENOMEM;
+ if (mp->m_dalign && (mp->m_swidth % mp->m_dalign != 0)) {
+ xfs_warn(mp,
+ "stripe width (%d) must be a multiple of the stripe unit (%d)",
+ mp->m_swidth, mp->m_dalign);
+ return -EINVAL;
+ }
- error = percpu_counter_init(&mp->m_ifree, 0, GFP_KERNEL);
- if (error)
- goto free_icount;
+ if (mp->m_logbufs != -1 &&
+ mp->m_logbufs != 0 &&
+ (mp->m_logbufs < XLOG_MIN_ICLOGS ||
+ mp->m_logbufs > XLOG_MAX_ICLOGS)) {
+ xfs_warn(mp, "invalid logbufs value: %d [not %d-%d]",
+ mp->m_logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS);
+ return -EINVAL;
+ }
- error = percpu_counter_init(&mp->m_fdblocks, 0, GFP_KERNEL);
- if (error)
- goto free_ifree;
+ if (mp->m_logbsize != -1 &&
+ mp->m_logbsize != 0 &&
+ (mp->m_logbsize < XLOG_MIN_RECORD_BSIZE ||
+ mp->m_logbsize > XLOG_MAX_RECORD_BSIZE ||
+ !is_power_of_2(mp->m_logbsize))) {
+ xfs_warn(mp,
+ "invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]",
+ mp->m_logbsize);
+ return -EINVAL;
+ }
- error = percpu_counter_init(&mp->m_delalloc_blks, 0, GFP_KERNEL);
- if (error)
- goto free_fdblocks;
+ if ((mp->m_flags & XFS_MOUNT_ALLOCSIZE) &&
+ (mp->m_allocsize_log > XFS_MAX_IO_LOG ||
+ mp->m_allocsize_log < XFS_MIN_IO_LOG)) {
+ xfs_warn(mp, "invalid log iosize: %d [not %d-%d]",
+ mp->m_allocsize_log, XFS_MIN_IO_LOG, XFS_MAX_IO_LOG);
+ return -EINVAL;
+ }
return 0;
-
-free_fdblocks:
- percpu_counter_destroy(&mp->m_fdblocks);
-free_ifree:
- percpu_counter_destroy(&mp->m_ifree);
-free_icount:
- percpu_counter_destroy(&mp->m_icount);
- return -ENOMEM;
-}
-
-void
-xfs_reinit_percpu_counters(
- struct xfs_mount *mp)
-{
- percpu_counter_set(&mp->m_icount, mp->m_sb.sb_icount);
- percpu_counter_set(&mp->m_ifree, mp->m_sb.sb_ifree);
- percpu_counter_set(&mp->m_fdblocks, mp->m_sb.sb_fdblocks);
-}
-
-static void
-xfs_destroy_percpu_counters(
- struct xfs_mount *mp)
-{
- percpu_counter_destroy(&mp->m_icount);
- percpu_counter_destroy(&mp->m_ifree);
- percpu_counter_destroy(&mp->m_fdblocks);
- ASSERT(XFS_FORCED_SHUTDOWN(mp) ||
- percpu_counter_sum(&mp->m_delalloc_blks) == 0);
- percpu_counter_destroy(&mp->m_delalloc_blks);
-}
-
-static void
-xfs_fs_put_super(
- struct super_block *sb)
-{
- struct xfs_mount *mp = XFS_M(sb);
-
- /* if ->fill_super failed, we have no mount to tear down */
- if (!sb->s_fs_info)
- return;
-
- xfs_notice(mp, "Unmounting Filesystem");
- xfs_filestream_unmount(mp);
- xfs_unmountfs(mp);
-
- xfs_freesb(mp);
- free_percpu(mp->m_stats.xs_stats);
- xfs_destroy_percpu_counters(mp);
- xfs_destroy_mount_workqueues(mp);
- xfs_close_devices(mp);
-
- sb->s_fs_info = NULL;
- xfs_mount_free(mp);
-}
-
-static long
-xfs_fs_nr_cached_objects(
- struct super_block *sb,
- struct shrink_control *sc)
-{
- /* Paranoia: catch incorrect calls during mount setup or teardown */
- if (WARN_ON_ONCE(!sb->s_fs_info))
- return 0;
- return xfs_reclaim_inodes_count(XFS_M(sb));
-}
-
-static long
-xfs_fs_free_cached_objects(
- struct super_block *sb,
- struct shrink_control *sc)
-{
- return xfs_reclaim_inodes_nr(XFS_M(sb), sc->nr_to_scan);
-}
-
-static const struct super_operations xfs_super_operations = {
- .alloc_inode = xfs_fs_alloc_inode,
- .destroy_inode = xfs_fs_destroy_inode,
- .dirty_inode = xfs_fs_dirty_inode,
- .drop_inode = xfs_fs_drop_inode,
- .put_super = xfs_fs_put_super,
- .sync_fs = xfs_fs_sync_fs,
- .freeze_fs = xfs_fs_freeze,
- .unfreeze_fs = xfs_fs_unfreeze,
- .statfs = xfs_fs_statfs,
- .show_options = xfs_fs_show_options,
- .nr_cached_objects = xfs_fs_nr_cached_objects,
- .free_cached_objects = xfs_fs_free_cached_objects,
-};
-
-static struct xfs_mount *
-xfs_mount_alloc(void)
-{
- struct xfs_mount *mp;
-
- mp = kmem_alloc(sizeof(struct xfs_mount), KM_ZERO);
- if (!mp)
- return NULL;
-
- spin_lock_init(&mp->m_sb_lock);
- spin_lock_init(&mp->m_agirotor_lock);
- INIT_RADIX_TREE(&mp->m_perag_tree, GFP_ATOMIC);
- spin_lock_init(&mp->m_perag_lock);
- mutex_init(&mp->m_growlock);
- atomic_set(&mp->m_active_trans, 0);
- INIT_DELAYED_WORK(&mp->m_reclaim_work, xfs_reclaim_worker);
- INIT_DELAYED_WORK(&mp->m_eofblocks_work, xfs_eofblocks_worker);
- INIT_DELAYED_WORK(&mp->m_cowblocks_work, xfs_cowblocks_worker);
- mp->m_kobj.kobject.kset = xfs_kset;
- /*
- * We don't create the finobt per-ag space reservation until after log
- * recovery, so we must set this to true so that an ifree transaction
- * started during log recovery will not depend on space reservations
- * for finobt expansion.
- */
- mp->m_finobt_nores = true;
- return mp;
}
static int
projects / platform / kernel / linux-rpi.git / commitdiff