btrfs: store the error that turned the fs into error state

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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>

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This commit is contained in:

Filipe Manana 2023-07-26 16:57:04 +01:00 • committed by David Sterba

parent 1b6948acb8

commit ae3364e521

3 changed files with 16 additions and 8 deletions

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2

fs/btrfs/disk-io.c

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12

fs/btrfs/fs.h

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10

fs/btrfs/messages.c

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