From dfb7c0ceab57fee7618f4c9c31c5a89254e8530a Mon Sep 17 00:00:00 2001 From: Jaegeuk Kim Date: Wed, 12 Dec 2012 09:47:39 +0900 Subject: [PATCH] f2fs: remove set_page_dirty for atomic f2fs_end_io_write We should guarantee not to do *scheduling while atomic*. I found, in atomic f2fs_end_io_write(), there is a set_page_dirty() call to deal with IO errors. But, set_page_dirty() calls: -> f2fs_set_data_page_dirty() -> set_dirty_dir_page() -> cond_resched() which results in scheduling. In order to avoid this, I'd like to remove simply set_page_dirty(), since the page is already marked as ERROR and f2fs will be operated as the read-only mode as well. So, there is no recovery issue with this. Signed-off-by: Jaegeuk Kim --- fs/f2fs/segment.c | 1 - 1 file changed, 1 deletion(-) diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index 1b26e4e..8bc1b6f 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -631,7 +631,6 @@ static void f2fs_end_io_write(struct bio *bio, int err) if (page->mapping) set_bit(AS_EIO, &page->mapping->flags); set_ckpt_flags(p->sbi->ckpt, CP_ERROR_FLAG); - set_page_dirty(page); } end_page_writeback(page); dec_page_count(p->sbi, F2FS_WRITEBACK); -- 2.7.4