diff options
| author | Filipe Manana <fdmanana@suse.com> | 2023-07-26 18:57:04 +0300 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2023-08-21 15:52:18 +0300 |
| commit | ae3364e5215bed9ce89db6b0c2d21eae4b66f4ae (patch) | |
| tree | c80865768c0bd456300371cf9fe6604c097b5228 /fs/btrfs/messages.c | |
| parent | 1b6948acb854b88162f273a26f9324d167051700 (diff) | |
| download | linux-ae3364e5215bed9ce89db6b0c2d21eae4b66f4ae.tar.xz | |
btrfs: store the error that turned the fs into error state
Currently when we turn the fs into an error state, typically after a
transaction abort, we don't store the error anywhere, we just set a bit
(BTRFS_FS_STATE_ERROR) at struct btrfs_fs_info::fs_state to signal the
error state.
There are cases where it would be useful to have access to the specific
error in order to provide a more meaningful error to users/applications.
This change adds a member to struct btrfs_fs_info to store the error and
removes the BTRFS_FS_STATE_ERROR bit. When there's no error, the new
member (fs_error) has a value of 0, otherwise its value is a negative
errno value.
Followup changes will make use of this new member.
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/messages.c')
| -rw-r--r-- | fs/btrfs/messages.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/fs/btrfs/messages.c b/fs/btrfs/messages.c index 23fc11af498a..e3c9d2706341 100644 --- a/fs/btrfs/messages.c +++ b/fs/btrfs/messages.c @@ -10,14 +10,13 @@ #ifdef CONFIG_PRINTK #define STATE_STRING_PREFACE ": state " -#define STATE_STRING_BUF_LEN (sizeof(STATE_STRING_PREFACE) + BTRFS_FS_STATE_COUNT) +#define STATE_STRING_BUF_LEN (sizeof(STATE_STRING_PREFACE) + BTRFS_FS_STATE_COUNT + 1) /* * Characters to print to indicate error conditions or uncommon filesystem state. * 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', @@ -37,6 +36,11 @@ static void btrfs_state_to_string(const struct btrfs_fs_info *info, char *buf) memcpy(curr, STATE_STRING_PREFACE, sizeof(STATE_STRING_PREFACE)); curr += sizeof(STATE_STRING_PREFACE) - 1; + if (BTRFS_FS_ERROR(info)) { + *curr++ = 'E'; + states_printed = true; + } + 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]) { @@ -155,7 +159,7 @@ void __btrfs_handle_fs_error(struct btrfs_fs_info *fs_info, const char *function * Today we only save the error info to memory. Long term we'll also * send it down to the disk. */ - set_bit(BTRFS_FS_STATE_ERROR, &fs_info->fs_state); + WRITE_ONCE(fs_info->fs_error, errno); /* Don't go through full error handling during mount. */ if (!(sb->s_flags & SB_BORN)) |