[PATCH 23/24] sys_swapoff: change order to match sys_swapon
From: Cesar Eduardo Barros <hidden>
Date: 2011-02-12 18:49:49
Subsystem:
memory management, memory management - swap, the rest · Maintainers:
Andrew Morton, Chris Li, Kairui Song, Linus Torvalds
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 <redacted> --- mm/swapfile.c | 7 ++++--- 1 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/mm/swapfile.c b/mm/swapfile.c
index 8f1b17b..deeb0b1 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c@@ -1625,6 +1625,10 @@ SYSCALL_DEFINE1(swapoff, const char __user *, specialfile) 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 __user *, specialfile) 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; }
--
1.7.4
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>