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authorKhazhismel Kumykov <khazhy@google.com>2018-10-12 21:34:40 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-10-13 09:31:03 +0200
commitac081c3be3fae6d0cc3e1862507fca3862d30b67 (patch)
tree4c7401492f6e84f7b021de8b706c7085444d69ea
parentbfba8e5cf28f413aa05571af493871d74438979f (diff)
downloadlinux-stericsson-ac081c3be3fae6d0cc3e1862507fca3862d30b67.tar.gz
fs/fat/fatent.c: add cond_resched() to fat_count_free_clusters()
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 <khazhy@google.com> Acked-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--fs/fat/fatent.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/fat/fatent.c b/fs/fat/fatent.c
index defc2168de91..f58c0cacc531 100644
--- a/fs/fat/fatent.c
+++ b/fs/fat/fatent.c
@@ -682,6 +682,7 @@ 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;