From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Sasha Levin To: stable@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Khazhismel Kumykov , Andrew Morton , Greg Kroah-Hartman , Sasha Levin Subject: [PATCH AUTOSEL 4.18 27/27] fs/fat/fatent.c: add cond_resched() to fat_count_free_clusters() Date: Mon, 22 Oct 2018 06:19:24 -0400 Message-Id: <20181022101924.40531-27-sashal@kernel.org> In-Reply-To: <20181022101924.40531-1-sashal@kernel.org> References: <20181022101924.40531-1-sashal@kernel.org> List-ID: From: Khazhismel Kumykov [ Upstream commit ac081c3be3fae6d0cc3e1862507fca3862d30b67 ] On non-preempt kernels this loop can take a long time (more than 50 ticks) processing through entries. Link: http://lkml.kernel.org/r/20181010172623.57033-1-khazhy@google.com Signed-off-by: Khazhismel Kumykov Acked-by: OGAWA Hirofumi Reviewed-by: Andrew Morton Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- fs/fat/fatent.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/fat/fatent.c b/fs/fat/fatent.c index 3aef8630a4b9..95d2c716e0da 100644 --- a/fs/fat/fatent.c +++ b/fs/fat/fatent.c @@ -681,6 +681,7 @@ int fat_count_free_clusters(struct super_block *sb) if (ops->ent_get(&fatent) == FAT_ENT_FREE) free++; } while (fat_ent_next(sbi, &fatent)); + cond_resched(); } sbi->free_clusters = free; sbi->free_clus_valid = 1; -- 2.17.1