[06/16] iomap: report directio read and write errors to callers

Commit Message

Darrick J. Wong Dec. 31, 2024, 11:40 p.m. UTC

From: Darrick J. Wong <[e-mail]>

Add more hooks to report directio IO errors to the filesystem.

Signed-off-by: "Darrick J. Wong" <[e-mail]>
---
 fs/iomap/direct-io.c  |    4 ++++
 include/linux/iomap.h |    2 ++
 2 files changed, 6 insertions(+)

Patch

diff --git a/fs/iomap/direct-io.c b/fs/iomap/direct-io.c
index dd521f4edf55ac..f572be18490b0a 100644
--- a/fs/iomap/direct-io.c
+++ b/fs/iomap/direct-io.c
@@ -100,6 +100,10 @@  ssize_t iomap_dio_complete(struct iomap_dio *dio)
 
 	if (dops && dops->end_io)
 		ret = dops->end_io(iocb, dio->size, ret, dio->flags);
+	if (dio->error && dops && dops->ioerror)
+		dops->ioerror(file_inode(iocb->ki_filp),
+				(dio->flags & IOMAP_DIO_WRITE) ? WRITE : READ,
+				offset, dio->size, dio->error);
 
 	if (likely(!ret)) {
 		ret = dio->size;
diff --git a/include/linux/iomap.h b/include/linux/iomap.h
index afa0917cf43705..69c8b45bd9b935 100644
--- a/include/linux/iomap.h
+++ b/include/linux/iomap.h
@@ -439,6 +439,8 @@  struct iomap_dio_ops {
 		      unsigned flags);
 	void (*submit_io)(const struct iomap_iter *iter, struct bio *bio,
 		          loff_t file_offset);
+	void (*ioerror)(struct inode *inode, int direction, loff_t pos,
+			u64 len, int error);
 
 	/*
 	 * Filesystems wishing to attach private information to a direct io bio