From 20a7db8ab3f2057a518448b1728d504ffadef65e Mon Sep 17 00:00:00 2001 From: David Sterba Date: Fri, 17 Feb 2017 16:24:29 +0100 Subject: btrfs: add dummy callback for readpage_io_failed and drop checks Make extent_io_ops::readpage_io_failed_hook callback mandatory and define a dummy function for btrfs_extent_io_ops. As the failed IO callback is not performance critical, the branch vs extra trade off does not hurt. Signed-off-by: David Sterba --- fs/btrfs/extent_io.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/btrfs/extent_io.h') diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h index 1f8478dc9f8e..3e4fad4a909d 100644 --- a/fs/btrfs/extent_io.h +++ b/fs/btrfs/extent_io.h @@ -103,6 +103,7 @@ struct extent_io_ops { int (*merge_bio_hook)(struct page *page, unsigned long offset, size_t size, struct bio *bio, unsigned long bio_flags); + int (*readpage_io_failed_hook)(struct page *page, int failed_mirror); /* * Optional hooks, called if the pointer is not NULL @@ -110,7 +111,6 @@ struct extent_io_ops { int (*fill_delalloc)(struct inode *inode, struct page *locked_page, u64 start, u64 end, int *page_started, unsigned long *nr_written); - int (*readpage_io_failed_hook)(struct page *page, int failed_mirror); int (*writepage_start_hook)(struct page *page, u64 start, u64 end); void (*writepage_end_io_hook)(struct page *page, u64 start, u64 end, -- cgit v1.2.3