From 001c584cca6fce8e91f19eca88781b8c16d1ea42 Mon Sep 17 00:00:00 2001 From: Chao Yu Date: Tue, 18 Apr 2017 19:23:39 +0800 Subject: f2fs: unlock cp_rwsem early for IPU writes For IPU writes, there won't be any udpates in dnode page since we will reuse old block address instead of allocating new one, so we don't need to lock cp_rwsem during IPU IO submitting. Signed-off-by: Chao Yu --- fs/f2fs/data.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'fs/f2fs/data.c') diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index e984a42eabf4..32d5a3b38a3f 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -1357,6 +1357,8 @@ retry_encrypt: !is_cold_data(page) && !IS_ATOMIC_WRITTEN_PAGE(page) && need_inplace_update(inode))) { + f2fs_unlock_op(F2FS_I_SB(inode)); + fio->cp_rwsem_locked = false; err = rewrite_data_page(fio); set_inode_flag(inode, FI_UPDATE_WRITE); trace_f2fs_do_write_data_page(page, IPU); @@ -1392,6 +1394,7 @@ static int __write_data_page(struct page *page, bool *submitted, .page = page, .encrypted_page = NULL, .submitted = false, + .cp_rwsem_locked = true, }; trace_f2fs_writepage(page, DATA); @@ -1449,7 +1452,8 @@ write: err = do_write_data_page(&fio); if (F2FS_I(inode)->last_disk_size < psize) F2FS_I(inode)->last_disk_size = psize; - f2fs_unlock_op(sbi); + if (fio.cp_rwsem_locked) + f2fs_unlock_op(sbi); done: if (err && err != -ENOENT) goto redirty_out; -- cgit v1.2.3