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| author | Cesar Eduardo Barros <cesarb@cesarb.net> | 2011-03-22 16:33:36 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-22 17:44:08 -0700 |
| commit | c6a2b64ba5d09a1e281e85988ffd650655fa0f39 (patch) | |
| tree | 5d3787b45e2e4ad7377c47cd601a1fcb1fec0bde | |
| parent | c69dbfb84e88503468b6c481aecdb48d76ad5bc6 (diff) | |
| download | op-kernel-dev-c6a2b64ba5d09a1e281e85988ffd650655fa0f39.zip op-kernel-dev-c6a2b64ba5d09a1e281e85988ffd650655fa0f39.tar.gz | |
sys_swapoff: change order to match sys_swapon
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@cesarb.net>
Tested-by: Eric B Munson <emunson@mgebm.net>
Acked-by: Eric B Munson <emunson@mgebm.net>
Reviewed-by: Pekka Enberg <penberg@kernel.org>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/swapfile.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/mm/swapfile.c b/mm/swapfile.c index df3dc7a..465d972 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; } |
