Merge tag 'vfs-7.0-rc1.fserror' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

Pull vfs error reporting updates from Christian Brauner:
 "This contains the changes to support generic I/O error reporting.

  Filesystems currently have no standard mechanism for reporting
  metadata corruption and file I/O errors to userspace via fsnotify.
  Each filesystem (xfs, ext4, erofs, f2fs, etc.) privately defines
  EFSCORRUPTED, and error reporting to fanotify is inconsistent or
  absent entirely.

  This introduces a generic fserror infrastructure built around struct
  super_block that gives filesystems a standard way to queue metadata
  and file I/O error reports for delivery to fsnotify.

  Errors are queued via mempools and queue_work to avoid holding
  filesystem locks in the notification path; unmount waits for pending
  events to drain. A new super_operations::report_error callback lets
  filesystem drivers respond to file I/O errors themselves (to be used
  by an upcoming XFS self-healing patchset).

  On the uapi side, EFSCORRUPTED and EUCLEAN are promoted from private
  per-filesystem definitions to canonical errno.h values across all
  architectures"

* tag 'vfs-7.0-rc1.fserror' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
  ext4: convert to new fserror helpers
  xfs: translate fsdax media errors into file "data lost" errors when convenient
  xfs: report fs metadata errors via fsnotify
  iomap: report file I/O errors to the VFS
  fs: report filesystem and file I/O errors to fsnotify
  uapi: promote EFSCORRUPTED and EUCLEAN to errno.h

4 files changed, 8 insertions, 0 deletions

diff --git a/arch/alpha/include/uapi/asm/errno.h b/arch/alpha/include/uapi/asm/errno.h
index 3d265f6babaf..6791f6508632 100644
--- a/arch/alpha/include/uapi/asm/errno.h
+++ b/arch/alpha/include/uapi/asm/errno.h
@@ -55,6 +55,7 @@
 #define	ENOSR		82	/* Out of streams resources */
 #define	ETIME		83	/* Timer expired */
 #define	EBADMSG		84	/* Not a data message */
+#define	EFSBADCRC	EBADMSG	/* Bad CRC detected */
 #define	EPROTO		85	/* Protocol error */
 #define	ENODATA		86	/* No data available */
 #define	ENOSTR		87	/* Device not a stream */
@@ -96,6 +97,7 @@
 #define	EREMCHG		115	/* Remote address changed */
 
 #define	EUCLEAN		117	/* Structure needs cleaning */
+#define	EFSCORRUPTED	EUCLEAN	/* Filesystem is corrupted */
 #define	ENOTNAM		118	/* Not a XENIX named type file */
 #define	ENAVAIL		119	/* No XENIX semaphores available */
 #define	EISNAM		120	/* Is a named type file */
diff --git a/arch/mips/include/uapi/asm/errno.h b/arch/mips/include/uapi/asm/errno.h
index 2fb714e2d6d8..c01ed91b1ef4 100644
--- a/arch/mips/include/uapi/asm/errno.h
+++ b/arch/mips/include/uapi/asm/errno.h
@@ -50,6 +50,7 @@
 #define EDOTDOT		73	/* RFS specific error */
 #define EMULTIHOP	74	/* Multihop attempted */
 #define EBADMSG		77	/* Not a data message */
+#define EFSBADCRC	EBADMSG	/* Bad CRC detected */
 #define ENAMETOOLONG	78	/* File name too long */
 #define EOVERFLOW	79	/* Value too large for defined data type */
 #define ENOTUNIQ	80	/* Name not unique on network */
@@ -88,6 +89,7 @@
 #define EISCONN		133	/* Transport endpoint is already connected */
 #define ENOTCONN	134	/* Transport endpoint is not connected */
 #define EUCLEAN		135	/* Structure needs cleaning */
+#define EFSCORRUPTED	EUCLEAN	/* Filesystem is corrupted */
 #define ENOTNAM		137	/* Not a XENIX named type file */
 #define ENAVAIL		138	/* No XENIX semaphores available */
 #define EISNAM		139	/* Is a named type file */
diff --git a/arch/parisc/include/uapi/asm/errno.h b/arch/parisc/include/uapi/asm/errno.h
index 8d94739d75c6..8cbc07c1903e 100644
--- a/arch/parisc/include/uapi/asm/errno.h
+++ b/arch/parisc/include/uapi/asm/errno.h
@@ -36,6 +36,7 @@
 
 #define	EDOTDOT		66	/* RFS specific error */
 #define	EBADMSG		67	/* Not a data message */
+#define	EFSBADCRC	EBADMSG	/* Bad CRC detected */
 #define	EUSERS		68	/* Too many users */
 #define	EDQUOT		69	/* Quota exceeded */
 #define	ESTALE		70	/* Stale file handle */
@@ -62,6 +63,7 @@
 #define	ERESTART	175	/* Interrupted system call should be restarted */
 #define	ESTRPIPE	176	/* Streams pipe error */
 #define	EUCLEAN		177	/* Structure needs cleaning */
+#define	EFSCORRUPTED	EUCLEAN	/* Filesystem is corrupted */
 #define	ENOTNAM		178	/* Not a XENIX named type file */
 #define	ENAVAIL		179	/* No XENIX semaphores available */
 #define	EISNAM		180	/* Is a named type file */
diff --git a/arch/sparc/include/uapi/asm/errno.h b/arch/sparc/include/uapi/asm/errno.h
index 81a732b902ee..4a41e7835fd5 100644
--- a/arch/sparc/include/uapi/asm/errno.h
+++ b/arch/sparc/include/uapi/asm/errno.h
@@ -48,6 +48,7 @@
 #define	ENOSR		74	/* Out of streams resources */
 #define	ENOMSG		75	/* No message of desired type */
 #define	EBADMSG		76	/* Not a data message */
+#define	EFSBADCRC	EBADMSG	/* Bad CRC detected */
 #define	EIDRM		77	/* Identifier removed */
 #define	EDEADLK		78	/* Resource deadlock would occur */
 #define	ENOLCK		79	/* No record locks available */
@@ -91,6 +92,7 @@
 #define	ENOTUNIQ	115	/* Name not unique on network */
 #define	ERESTART	116	/* Interrupted syscall should be restarted */
 #define	EUCLEAN		117	/* Structure needs cleaning */
+#define	EFSCORRUPTED	EUCLEAN	/* Filesystem is corrupted */
 #define	ENOTNAM		118	/* Not a XENIX named type file */
 #define	ENAVAIL		119	/* No XENIX semaphores available */
 #define	EISNAM		120	/* Is a named type file */