The patch titled
sys_swapoff: change order to match sys_swapon
has been removed from the -mm tree. Its filename was
sys_swapoff-change-order-to-match-sys_swapon.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: sys_swapoff: change order to match sys_swapon
From: Cesar Eduardo Barros <cesarb@xxxxxxxxxx>
The block in sys_swapon which does the final adjustments to the
swap_info_struct and to swap_list is the same as the block which
re-inserts it again at sys_swapoff on failure of try_to_unuse(), except
for the order of the operations within the lock. Since the order should
not matter, arbitrarily change sys_swapoff to match sys_swapon, in
preparation to making both share the same code.
Signed-off-by: Cesar Eduardo Barros <cesarb@xxxxxxxxxx>
Tested-by: Eric B Munson <emunson@xxxxxxxxx>
Acked-by: Eric B Munson <emunson@xxxxxxxxx>
Reviewed-by: Pekka Enberg <penberg@xxxxxxxxxx>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/swapfile.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff -puN mm/swapfile.c~sys_swapoff-change-order-to-match-sys_swapon mm/swapfile.c
--- a/mm/swapfile.c~sys_swapoff-change-order-to-match-sys_swapon
+++ a/mm/swapfile.c
@@ -1625,6 +1625,10 @@ SYSCALL_DEFINE1(swapoff, const char __us
spin_lock(&swap_lock);
if (p->prio < 0)
p->prio = --least_priority;
+ p->flags |= SWP_WRITEOK;
+ nr_swap_pages += p->pages;
+ total_swap_pages += p->pages;
+
prev = -1;
for (i = swap_list.head; i >= 0; i = swap_info[i]->next) {
if (p->prio >= swap_info[i]->prio)
@@ -1636,9 +1640,6 @@ SYSCALL_DEFINE1(swapoff, const char __us
swap_list.head = swap_list.next = type;
else
swap_info[prev]->next = type;
- nr_swap_pages += p->pages;
- total_swap_pages += p->pages;
- p->flags |= SWP_WRITEOK;
spin_unlock(&swap_lock);
goto out_dput;
}
_
Patches currently in -mm which might be from cesarb@xxxxxxxxxx are
origin.patch
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