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Commit 172124e2 authored by Jens Axboe's avatar Jens Axboe
Browse files

Revert "block: implement blkdev_readpages" 



This reverts commit db2dbb12.

It apparently causes problems with partition table read-ahead
on archs with large page sizes. Until that problem is diagnosed
further, just drop the readpages support on block devices.

Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
parent a05c0205

fs/block_dev.c

+0 −7
Original line number Diff line number Diff line
@@ -331,12 +331,6 @@ static int blkdev_readpage(struct file * file, struct page * page) 
	return block_read_full_page(page, blkdev_get_block);

}



static int blkdev_readpages(struct file *file, struct address_space *mapping,

			struct list_head *pages, unsigned nr_pages)

{

	return mpage_readpages(mapping, pages, nr_pages, blkdev_get_block);

}



static int blkdev_write_begin(struct file *file, struct address_space *mapping,

			loff_t pos, unsigned len, unsigned flags,

			struct page **pagep, void **fsdata)
@@ -1405,7 +1399,6 @@ static int blkdev_releasepage(struct page *page, gfp_t wait) 


static const struct address_space_operations def_blk_aops = {

	.readpage	= blkdev_readpage,

	.readpages	= blkdev_readpages,

	.writepage	= blkdev_writepage,

	.sync_page	= block_sync_page,

	.write_begin	= blkdev_write_begin,