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Commit 51039cd0 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by NeilBrown
Browse files

raid5-cache: inline r5l_alloc_io_unit into r5l_new_meta 



This is the only user, and keeping all code initializing the io_unit
structure together improves readbility.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarShaohua Li <shli@fb.com>
Signed-off-by: default avatarNeilBrown <neilb@suse.com>
parent 1e932a37

drivers/md/raid5-cache.c

+8 −18
Original line number Diff line number Diff line
@@ -150,23 +150,6 @@ static bool r5l_has_free_space(struct r5l_log *log, sector_t size) 
	return log->device_size > used_size + size;

}



static struct r5l_io_unit *r5l_alloc_io_unit(struct r5l_log *log)

{

	struct r5l_io_unit *io;

	/* We can't handle memory allocate failure so far */

	gfp_t gfp = GFP_NOIO | __GFP_NOFAIL;



	io = kmem_cache_zalloc(log->io_kc, gfp);

	io->log = log;

	io->meta_page = alloc_page(gfp | __GFP_ZERO);



	bio_list_init(&io->bios);

	INIT_LIST_HEAD(&io->log_sibling);

	INIT_LIST_HEAD(&io->stripe_list);

	io->state = IO_UNIT_RUNNING;

	return io;

}



static void r5l_free_io_unit(struct r5l_log *log, struct r5l_io_unit *io)

{

	__free_page(io->meta_page);
@@ -293,8 +276,15 @@ static struct r5l_io_unit *r5l_new_meta(struct r5l_log *log) 
	struct r5l_io_unit *io;

	struct r5l_meta_block *block;



	io = r5l_alloc_io_unit(log);

	/* We can't handle memory allocate failure so far */

	io = kmem_cache_zalloc(log->io_kc, GFP_NOIO | __GFP_NOFAIL);

	io->log = log;

	bio_list_init(&io->bios);

	INIT_LIST_HEAD(&io->log_sibling);

	INIT_LIST_HEAD(&io->stripe_list);

	io->state = IO_UNIT_RUNNING;



	io->meta_page = alloc_page(GFP_NOIO | __GFP_NOFAIL | __GFP_ZERO);

	block = page_address(io->meta_page);

	block->magic = cpu_to_le32(R5LOG_MAGIC);

	block->version = R5LOG_VERSION;