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btrfs: report filesystem shutdown via fserror

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Commit 347b7042fb ("Merge patch series "fs: generic file IO error
reporting"") has introduced a common framework for reporting errors to
fsnotify in a standard way.

One of the functions being introduced is fserror_report_shutdown() that,
when combined with the experimental support for shutdown in btrfs, it
means that user-space can also easily detect whenever a btrfs filesystem
has been marked as shutdown.

Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Miquel Sabaté Solà
2026-02-16 01:28:06 +01:00
committed by David Sterba
parent 2d2b5507e5
commit f11c3d8559
1 changed files with 4 additions and 1 deletions
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5
fs/btrfs/fs.h
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@@ -27,6 +27,7 @@
#include <linux/sched.h>
#include <linux/rbtree.h>
#include <linux/xxhash.h>
#include <linux/fserror.h>
#include <uapi/linux/btrfs.h>
#include <uapi/linux/btrfs_tree.h>
#include "extent-io-tree.h"
@@ -1199,8 +1200,10 @@ static inline void btrfs_force_shutdown(struct btrfs_fs_info *fs_info)
* So here we only mark the fs error without flipping it RO.
*/
WRITE_ONCE(fs_info->fs_error, -EIO);
if (!test_and_set_bit(BTRFS_FS_STATE_EMERGENCY_SHUTDOWN, &fs_info->fs_state))
if (!test_and_set_bit(BTRFS_FS_STATE_EMERGENCY_SHUTDOWN, &fs_info->fs_state)) {
btrfs_crit(fs_info, "emergency shutdown");
fserror_report_shutdown(fs_info->sb, GFP_KERNEL);
}
}
/*