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Date: Sat, 28 Jun 2014 10:47:42 -0700 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Marc Dietrich <marvin24@....de>, Jaegeuk Kim <jaegeuk.kim@...sung.com> Subject: [PATCH 3.15 101/139] f2fs: submit bio at the reclaim path 3.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jaegeuk Kim <jaegeuk.kim@...sung.com> commit 2aea39eca6b68d6ae7eb545332df0695f56a3d3f upstream. If f2fs_write_data_page is called through the reclaim path, we should submit the bio right away. This patch resolves the following issue that Marc Dietrich reported. "It took me a while to bisect a problem which causes my ARM (tegra2) netbook to frequently stall for 5-10 seconds when I enable EXA acceleration (opentegra experimental ddx)." And this patch fixes that. Reported-by: Marc Dietrich <marvin24@....de> Signed-off-by: Jaegeuk Kim <jaegeuk.kim@...sung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- fs/f2fs/data.c | 2 ++ 1 file changed, 2 insertions(+) --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -835,6 +835,8 @@ out: unlock_page(page); if (need_balance_fs) f2fs_balance_fs(sbi); + if (wbc->for_reclaim) + f2fs_submit_merged_bio(sbi, DATA, WRITE); return 0; redirty_out: -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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