The call to swap_cgroup_swapon is in the middle of loading the swap map
and extents. As it only does memory allocation and does not depend on
the swapfile layout (map/extents), it can be called earlier (or later).
Move it to just after the allocation of swap_map, since it is
conceptually similar (allocates a map).
Signed-off-by: Cesar Eduardo Barros <cesarb@xxxxxxxxxx>
---
mm/swapfile.c | 8 ++++----
1 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/mm/swapfile.c b/mm/swapfile.c
index 13c13bd..7ac81fe 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -2074,6 +2074,10 @@ SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags)
goto bad_swap;
}
+ error = swap_cgroup_swapon(p->type, maxpages);
+ if (error)
+ goto bad_swap;
+
nr_good_pages = maxpages - 1; /* omit header page */
for (i = 0; i < swap_header->info.nr_badpages; i++) {
@@ -2088,10 +2092,6 @@ SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags)
}
}
- error = swap_cgroup_swapon(p->type, maxpages);
- if (error)
- goto bad_swap;
-
if (nr_good_pages) {
swap_map[0] = SWAP_MAP_BAD;
p->max = maxpages;
--
1.7.4
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