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| author | Khazhismel Kumykov <khazhy@google.com> | 2018-10-12 21:34:40 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-10-13 09:31:03 +0200 |
| commit | ac081c3be3fae6d0cc3e1862507fca3862d30b67 (patch) | |
| tree | 4c7401492f6e84f7b021de8b706c7085444d69ea | |
| parent | bfba8e5cf28f413aa05571af493871d74438979f (diff) | |
| download | lwn-ac081c3be3fae6d0cc3e1862507fca3862d30b67.tar.gz lwn-ac081c3be3fae6d0cc3e1862507fca3862d30b67.zip | |
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.c | 1 |
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; |