Messages in this thread Patch in this message | | | Date | Thu, 20 Oct 2011 23:22:47 +0800 | From | Wu Fengguang <> | Subject | [PATCH 7/7] writeback: requeue_io_wait() when failed to grab superblock |
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It's some block condition that's not really related to the inode, but still need to move it to b_more_io_wait to prevent possible busy looping.
CC: Jan Kara <jack@suse.cz> Signed-off-by: Wu Fengguang <fengguang.wu@intel.com> --- fs/fs-writeback.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- linux-next.orig/fs/fs-writeback.c 2011-10-20 22:43:42.000000000 +0800 +++ linux-next/fs/fs-writeback.c 2011-10-20 22:46:53.000000000 +0800 @@ -652,17 +652,17 @@ static long __writeback_inodes_wb(struct struct super_block *sb = inode->i_sb; if (!grab_super_passive(sb)) { /* * grab_super_passive() may fail consistently due to * s_umount being grabbed by someone else. Don't use * requeue_io() to avoid busy retrying the inode/sb. */ - redirty_tail(inode, wb); + requeue_io_wait(inode, wb); continue; } wrote += writeback_sb_inodes(sb, wb, work); drop_super(sb); /* refer to the same tests at the end of writeback_sb_inodes */ if (wrote) { if (time_is_before_jiffies(start_time + HZ / 10UL))
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