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Commit d0a328a3 authored by Mikulas Patocka's avatar Mikulas Patocka Committed by Mike Snitzer
Browse files

dm bufio: refactor adjust_total_allocated 



Refactor adjust_total_allocated() so that it takes a bool argument
indicating if it should add or subtract the buffer size.

Signed-off-by: default avatarMikulas Patocka <mpatocka@redhat.com>
Signed-off-by: default avatarMike Snitzer <snitzer@redhat.com>
parent 26d2ef0c

drivers/md/dm-bufio.c

+11 −3
Original line number Diff line number Diff line
@@ -285,14 +285,22 @@ static void __remove(struct dm_bufio_client *c, struct dm_buffer *b) 


/*----------------------------------------------------------------*/



static void adjust_total_allocated(unsigned char data_mode, long diff)

static void adjust_total_allocated(struct dm_buffer *b, bool unlink)

{

	unsigned char data_mode;

	long diff;



	static unsigned long * const class_ptr[DATA_MODE_LIMIT] = {

		&dm_bufio_allocated_kmem_cache,

		&dm_bufio_allocated_get_free_pages,

		&dm_bufio_allocated_vmalloc,

	};



	data_mode = b->data_mode;

	diff = (long)b->c->block_size;

	if (unlink)

		diff = -diff;



	spin_lock(&param_spinlock);



	*class_ptr[data_mode] += diff;
@@ -462,7 +470,7 @@ static void __link_buffer(struct dm_buffer *b, sector_t block, int dirty) 
	__insert(b->c, b);

	b->last_accessed = jiffies;



	adjust_total_allocated(b->data_mode, (long)c->block_size);

	adjust_total_allocated(b, false);

}



/*
@@ -478,7 +486,7 @@ static void __unlink_buffer(struct dm_buffer *b) 
	__remove(b->c, b);

	list_del(&b->lru_list);



	adjust_total_allocated(b->data_mode, -(long)c->block_size);

	adjust_total_allocated(b, true);

}



/*