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Diffstat (limited to 'fs/btrfs/super.c')
-rw-r--r--fs/btrfs/super.c96
1 files changed, 87 insertions, 9 deletions
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 4d947ba32da9..b228efe8ab6e 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -66,6 +66,52 @@ static struct file_system_type btrfs_root_fs_type;
static int btrfs_remount(struct super_block *sb, int *flags, char *data);
+#ifdef CONFIG_PRINTK
+
+#define STATE_STRING_PREFACE ": state "
+#define STATE_STRING_BUF_LEN (sizeof(STATE_STRING_PREFACE) + BTRFS_FS_STATE_COUNT)
+
+/*
+ * Characters to print to indicate error conditions or uncommon filesystem sate.
+ * RO is not an error.
+ */
+static const char fs_state_chars[] = {
+ [BTRFS_FS_STATE_ERROR] = 'E',
+ [BTRFS_FS_STATE_REMOUNTING] = 'M',
+ [BTRFS_FS_STATE_RO] = 0,
+ [BTRFS_FS_STATE_TRANS_ABORTED] = 'A',
+ [BTRFS_FS_STATE_DEV_REPLACING] = 'R',
+ [BTRFS_FS_STATE_DUMMY_FS_INFO] = 0,
+ [BTRFS_FS_STATE_NO_CSUMS] = 'C',
+ [BTRFS_FS_STATE_LOG_CLEANUP_ERROR] = 'L',
+};
+
+static void btrfs_state_to_string(const struct btrfs_fs_info *info, char *buf)
+{
+ unsigned int bit;
+ bool states_printed = false;
+ unsigned long fs_state = READ_ONCE(info->fs_state);
+ char *curr = buf;
+
+ memcpy(curr, STATE_STRING_PREFACE, sizeof(STATE_STRING_PREFACE));
+ curr += sizeof(STATE_STRING_PREFACE) - 1;
+
+ for_each_set_bit(bit, &fs_state, sizeof(fs_state)) {
+ WARN_ON_ONCE(bit >= BTRFS_FS_STATE_COUNT);
+ if ((bit < BTRFS_FS_STATE_COUNT) && fs_state_chars[bit]) {
+ *curr++ = fs_state_chars[bit];
+ states_printed = true;
+ }
+ }
+
+ /* If no states were printed, reset the buffer */
+ if (!states_printed)
+ curr = buf;
+
+ *curr++ = 0;
+}
+#endif
+
/*
* Generally the error codes correspond to their respective errors, but there
* are a few special cases.
@@ -128,6 +174,7 @@ void __btrfs_handle_fs_error(struct btrfs_fs_info *fs_info, const char *function
{
struct super_block *sb = fs_info->sb;
#ifdef CONFIG_PRINTK
+ char statestr[STATE_STRING_BUF_LEN];
const char *errstr;
#endif
@@ -140,6 +187,7 @@ void __btrfs_handle_fs_error(struct btrfs_fs_info *fs_info, const char *function
#ifdef CONFIG_PRINTK
errstr = btrfs_decode_error(errno);
+ btrfs_state_to_string(fs_info, statestr);
if (fmt) {
struct va_format vaf;
va_list args;
@@ -148,12 +196,12 @@ void __btrfs_handle_fs_error(struct btrfs_fs_info *fs_info, const char *function
vaf.fmt = fmt;
vaf.va = &args;
- pr_crit("BTRFS: error (device %s) in %s:%d: errno=%d %s (%pV)\n",
- sb->s_id, function, line, errno, errstr, &vaf);
+ pr_crit("BTRFS: error (device %s%s) in %s:%d: errno=%d %s (%pV)\n",
+ sb->s_id, statestr, function, line, errno, errstr, &vaf);
va_end(args);
} else {
- pr_crit("BTRFS: error (device %s) in %s:%d: errno=%d %s\n",
- sb->s_id, function, line, errno, errstr);
+ pr_crit("BTRFS: error (device %s%s) in %s:%d: errno=%d %s\n",
+ sb->s_id, statestr, function, line, errno, errstr);
}
#endif
@@ -240,11 +288,15 @@ void __cold btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, .
vaf.va = &args;
if (__ratelimit(ratelimit)) {
- if (fs_info)
- printk("%sBTRFS %s (device %s): %pV\n", lvl, type,
- fs_info->sb->s_id, &vaf);
- else
+ if (fs_info) {
+ char statestr[STATE_STRING_BUF_LEN];
+
+ btrfs_state_to_string(fs_info, statestr);
+ printk("%sBTRFS %s (device %s%s): %pV\n", lvl, type,
+ fs_info->sb->s_id, statestr, &vaf);
+ } else {
printk("%sBTRFS %s: %pV\n", lvl, type, &vaf);
+ }
}
va_end(args);
@@ -861,6 +913,14 @@ int btrfs_parse_options(struct btrfs_fs_info *info, char *options,
break;
case Opt_space_cache:
case Opt_space_cache_version:
+ /*
+ * We already set FREE_SPACE_TREE above because we have
+ * compat_ro(FREE_SPACE_TREE) set, and we aren't going
+ * to allow v1 to be set for extent tree v2, simply
+ * ignore this setting if we're extent tree v2.
+ */
+ if (btrfs_fs_incompat(info, EXTENT_TREE_V2))
+ break;
if (token == Opt_space_cache ||
strcmp(args[0].from, "v1") == 0) {
btrfs_clear_opt(info->mount_opt,
@@ -881,6 +941,12 @@ int btrfs_parse_options(struct btrfs_fs_info *info, char *options,
btrfs_set_opt(info->mount_opt, RESCAN_UUID_TREE);
break;
case Opt_no_space_cache:
+ /*
+ * We cannot operate without the free space tree with
+ * extent tree v2, ignore this option.
+ */
+ if (btrfs_fs_incompat(info, EXTENT_TREE_V2))
+ break;
if (btrfs_test_opt(info, SPACE_CACHE)) {
btrfs_clear_and_info(info, SPACE_CACHE,
"disabling disk space caching");
@@ -896,6 +962,12 @@ int btrfs_parse_options(struct btrfs_fs_info *info, char *options,
"the 'inode_cache' option is deprecated and has no effect since 5.11");
break;
case Opt_clear_cache:
+ /*
+ * We cannot clear the free space tree with extent tree
+ * v2, ignore this option.
+ */
+ if (btrfs_fs_incompat(info, EXTENT_TREE_V2))
+ break;
btrfs_set_and_info(info, CLEAR_CACHE,
"force clearing of disk cache");
break;
@@ -2383,6 +2455,7 @@ static long btrfs_control_ioctl(struct file *file, unsigned int cmd,
{
struct btrfs_ioctl_vol_args *vol;
struct btrfs_device *device = NULL;
+ dev_t devt = 0;
int ret = -ENOTTY;
if (!capable(CAP_SYS_ADMIN))
@@ -2402,7 +2475,12 @@ static long btrfs_control_ioctl(struct file *file, unsigned int cmd,
mutex_unlock(&uuid_mutex);
break;
case BTRFS_IOC_FORGET_DEV:
- ret = btrfs_forget_devices(vol->name);
+ if (vol->name[0] != 0) {
+ ret = lookup_bdev(vol->name, &devt);
+ if (ret)
+ break;
+ }
+ ret = btrfs_forget_devices(devt);
break;
case BTRFS_IOC_DEVICES_READY:
mutex_lock(&uuid_mutex);
generated by cgit v1.2.3 (git 2.39.0) at 2024-08-07 09:54:33 +0300