diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/swap.h | 34 |
1 files changed, 0 insertions, 34 deletions
diff --git a/include/linux/swap.h b/include/linux/swap.h index a2bb20841616..78cc48a65512 100644 --- a/include/linux/swap.h +++ b/include/linux/swap.h @@ -236,40 +236,6 @@ enum { #define SWAP_CONT_MAX 0x7f /* Max count */ /* - * We use this to track usage of a cluster. A cluster is a block of swap disk - * space with SWAPFILE_CLUSTER pages long and naturally aligns in disk. All - * free clusters are organized into a list. We fetch an entry from the list to - * get a free cluster. - * - * The flags field determines if a cluster is free. This is - * protected by cluster lock. - */ -struct swap_cluster_info { - spinlock_t lock; /* - * Protect swap_cluster_info fields - * other than list, and swap_info_struct->swap_map - * elements corresponding to the swap cluster. - */ - u16 count; - u8 flags; - u8 order; - struct list_head list; -}; - -/* All on-list cluster must have a non-zero flag. */ -enum swap_cluster_flags { - CLUSTER_FLAG_NONE = 0, /* For temporary off-list cluster */ - CLUSTER_FLAG_FREE, - CLUSTER_FLAG_NONFULL, - CLUSTER_FLAG_FRAG, - /* Clusters with flags above are allocatable */ - CLUSTER_FLAG_USABLE = CLUSTER_FLAG_FRAG, - CLUSTER_FLAG_FULL, - CLUSTER_FLAG_DISCARD, - CLUSTER_FLAG_MAX, -}; - -/* * The first page in the swap file is the swap header, which is always marked * bad to prevent it from being allocated as an entry. This also prevents the * cluster to which it belongs being marked free. Therefore 0 is safe to use as |