diff mbox

[v7,03/22] fs: check for writeback errors after syncing out buffers in generic_file_fsync

Message ID 20170616193427.13955-4-jlayton@redhat.com (mailing list archive)
State New, archived
Headers show

Commit Message

Jeff Layton June 16, 2017, 7:34 p.m. UTC
ext2 currently does a test+clear of the AS_EIO flag, which is
is problematic for some coming changes.

What we really need to do instead is call filemap_check_errors
in __generic_file_fsync after syncing out the buffers. That
will be sufficient for this case, and help other callers detect
these errors properly as well.

With that, we don't need to twiddle it in ext2.

Suggested-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Matthew Wilcox <mawilcox@microsoft.com>
---
 fs/ext2/file.c | 2 +-
 fs/libfs.c     | 3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)
diff mbox

Patch

diff --git a/fs/ext2/file.c b/fs/ext2/file.c
index b21891a6bfca..ed00e7ae0ef3 100644
--- a/fs/ext2/file.c
+++ b/fs/ext2/file.c
@@ -177,7 +177,7 @@  int ext2_fsync(struct file *file, loff_t start, loff_t end, int datasync)
 	struct address_space *mapping = sb->s_bdev->bd_inode->i_mapping;
 
 	ret = generic_file_fsync(file, start, end, datasync);
-	if (ret == -EIO || test_and_clear_bit(AS_EIO, &mapping->flags)) {
+	if (ret == -EIO) {
 		/* We don't really know where the IO error happened... */
 		ext2_error(sb, __func__,
 			   "detected IO error when writing metadata buffers");
diff --git a/fs/libfs.c b/fs/libfs.c
index a04395334bb1..1dec90819366 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -991,7 +991,8 @@  int __generic_file_fsync(struct file *file, loff_t start, loff_t end,
 
 out:
 	inode_unlock(inode);
-	return ret;
+	err = filemap_check_errors(inode->i_mapping);
+	return ret ? ret : err;
 }
 EXPORT_SYMBOL(__generic_file_fsync);