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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: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
This commit is contained in:
Mikulas Patocka 2019-09-12 10:44:45 +02:00 committed by Mike Snitzer
parent 26d2ef0cd0
commit d0a328a385
1 changed files with 11 additions and 3 deletions
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14
drivers/md/dm-bufio.c
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@ -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);
}
/*