Messages in this thread Patch in this message | | | From | Sasha Levin <> | Subject | [PATCH AUTOSEL 4.14 15/15] fs/fat/fatent.c: add cond_resched() to fat_count_free_clusters() | Date | Mon, 22 Oct 2018 06:20:26 -0400 |
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From: Khazhismel Kumykov <khazhy@google.com>
[ 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 <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> Signed-off-by: Sasha Levin <sashal@kernel.org> --- fs/fat/fatent.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/fs/fat/fatent.c b/fs/fat/fatent.c index a40f36b1b292..9635df94db7d 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
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