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authorHugh Dickins <hugh@veritas.com>2009-01-06 14:39:50 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-01-06 15:59:05 -0800
commitebebbbe904634b0ca1c674457b399f68db5e05b1 (patch)
tree168c6c1193580e40ba1916ebaff822e15e8ee186 /include/linux/swap.h
parent81e33971271ec8603fe696731ff9967afb99e729 (diff)
swapfile: rearrange scan and swap_info
Before making functional changes, rearrange scan_swap_map() to simplify subsequent diffs. Actually, there is one functional change in there: leave cluster_nr negative while scanning for a new cluster - resetting it early increased the likelihood that when we have difficulty finding a free cluster, another task may come in and try doing exactly the same - just a waste of cpu. Before making functional changes, rearrange struct swap_info_struct slightly: flags will be needed as an unsigned long (for wait_on_bit), next is a good int to pair with prio, old_block_size is uninteresting so shift it to the end. Signed-off-by: Hugh Dickins <hugh@veritas.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/swap.h')
-rw-r--r--include/linux/swap.h8
1 files changed, 4 insertions, 4 deletions
diff --git a/include/linux/swap.h b/include/linux/swap.h
index 410c8e473727..9cabb8b21aba 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -133,14 +133,14 @@ enum {
* The in-memory structure used to track swap areas.
*/
struct swap_info_struct {
- unsigned int flags;
+ unsigned long flags;
int prio; /* swap priority */
+ int next; /* next entry on swap list */
struct file *swap_file;
struct block_device *bdev;
struct list_head extent_list;
struct swap_extent *curr_swap_extent;
- unsigned old_block_size;
- unsigned short * swap_map;
+ unsigned short *swap_map;
unsigned int lowest_bit;
unsigned int highest_bit;
unsigned int cluster_next;
@@ -148,7 +148,7 @@ struct swap_info_struct {
unsigned int pages;
unsigned int max;
unsigned int inuse_pages;
- int next; /* next entry on swap list */
+ unsigned int old_block_size;
};
struct swap_list_t {