Subject: [merged] frontswap-enable-call-to-invalidate-area-on-swapoff.patch removed from -mm tree To: k.kozlowski@xxxxxxxxxxx,konrad.wilk@xxxxxxxxxx,minchan@xxxxxxxxxx,shli@xxxxxxxxxxxx,sjenning@xxxxxxxxxxxxxxxxxx,mm-commits@xxxxxxxxxxxxxxx From: akpm@xxxxxxxxxxxxxxxxxxxx Date: Wed, 13 Nov 2013 12:38:42 -0800 The patch titled Subject: frontswap: enable call to invalidate area on swapoff has been removed from the -mm tree. Its filename was frontswap-enable-call-to-invalidate-area-on-swapoff.patch This patch was dropped because it was merged into mainline or a subsystem tree ------------------------------------------------------ From: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx> Subject: frontswap: enable call to invalidate area on swapoff During swapoff the frontswap_map was NULL-ified before calling frontswap_invalidate_area(). However the frontswap_invalidate_area() exits early if frontswap_map is NULL. Invalidate was never called during swapoff. This patch moves frontswap_map_set() in swapoff just after calling frontswap_invalidate_area() so outside of locks (swap_lock and swap_info_struct->lock). This shouldn't be a problem as during swapon the frontswap_map_set() is called also outside of any locks. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx> Reviewed-by: Seth Jennings <sjenning@xxxxxxxxxxxxxxxxxx> Cc: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> Cc: Shaohua Li <shli@xxxxxxxxxxxx> Cc: Minchan Kim <minchan@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/swapfile.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff -puN mm/swapfile.c~frontswap-enable-call-to-invalidate-area-on-swapoff mm/swapfile.c --- a/mm/swapfile.c~frontswap-enable-call-to-invalidate-area-on-swapoff +++ a/mm/swapfile.c @@ -1924,10 +1924,10 @@ SYSCALL_DEFINE1(swapoff, const char __us p->cluster_info = NULL; p->flags = 0; frontswap_map = frontswap_map_get(p); - frontswap_map_set(p, NULL); spin_unlock(&p->lock); spin_unlock(&swap_lock); frontswap_invalidate_area(type); + frontswap_map_set(p, NULL); mutex_unlock(&swapon_mutex); free_percpu(p->percpu_cluster); p->percpu_cluster = NULL; _ Patches currently in -mm which might be from k.kozlowski@xxxxxxxxxxx are origin.patch swap-fix-setting-page_size-blocksize-during-swapoff-swapon-race.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html