diff options
Diffstat (limited to 'mm/swapfile.c')
| -rw-r--r-- | mm/swapfile.c | 17 |
1 files changed, 2 insertions, 15 deletions
diff --git a/mm/swapfile.c b/mm/swapfile.c index 4069f17a82c8..5d9cedf9e7b8 100644 --- a/mm/swapfile.c +++ b/mm/swapfile.c @@ -2957,20 +2957,6 @@ static int setup_swap_map_and_extents(struct swap_info_struct *p, return nr_extents; } -/* - * Helper to sys_swapon determining if a given swap - * backing device queue supports DISCARD operations. - */ -static bool swap_discardable(struct swap_info_struct *si) -{ - struct request_queue *q = bdev_get_queue(si->bdev); - - if (!blk_queue_discard(q)) - return false; - - return true; -} - SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags) { struct swap_info_struct *p; @@ -3132,7 +3118,8 @@ SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags) sizeof(long), GFP_KERNEL); - if (p->bdev && (swap_flags & SWAP_FLAG_DISCARD) && swap_discardable(p)) { + if ((swap_flags & SWAP_FLAG_DISCARD) && + p->bdev && bdev_max_discard_sectors(p->bdev)) { /* * When discard is enabled for swap with no particular * policy flagged, we set all swap discard flags here in |