tree b94819fd074d9e312a10f0fd2259e9295b008418
parent aaec2b1d18792a5f27b69ff37f34f43f89f5aa3b
author Weichao Guo <guoweichao@huawei.com> 1474319007 +0800
committer Jaegeuk Kim <jaegeuk@kernel.org> 1475282063 -0700

f2fs: add customized migrate_page callback

This patch improves the migration of dirty pages and allows migrating atomic
written pages that F2FS uses in Page Cache. Instead of the fallback releasing
page path, it provides better performance for memory compaction, CMA and other
users of memory page migrating. For dirty pages, there is no need to write back
first when migrating. For an atomic written page before committing, we can
migrate the page and update the related 'inmem_pages' list at the same time.

Signed-off-by: Weichao Guo <guoweichao@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
[Jaegeuk Kim: fix some coding style]
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>