From 237c0790e54020d522b8fd23097e8dcafb4e331d Mon Sep 17 00:00:00 2001 From: Jaegeuk Kim Date: Thu, 30 Jun 2016 18:49:15 -0700 Subject: [PATCH] f2fs: call SetPageUptodate if needed SetPageUptodate() issues memory barrier, resulting in performance degrdation. Let's avoid that. Signed-off-by: Jaegeuk Kim --- fs/f2fs/checkpoint.c | 6 ++++-- fs/f2fs/data.c | 18 ++++++++++++------ fs/f2fs/file.c | 3 ++- fs/f2fs/inline.c | 9 ++++++--- fs/f2fs/node.c | 9 ++++++--- 5 files changed, 30 insertions(+), 15 deletions(-) diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c index 2755ef730a41..8ea895389ae4 100644 --- a/fs/f2fs/checkpoint.c +++ b/fs/f2fs/checkpoint.c @@ -48,7 +48,8 @@ repeat: goto repeat; } f2fs_wait_on_page_writeback(page, META, true); - SetPageUptodate(page); + if (!PageUptodate(page)) + SetPageUptodate(page); return page; } @@ -364,7 +365,8 @@ static int f2fs_set_meta_page_dirty(struct page *page) { trace_f2fs_set_page_dirty(page, META); - SetPageUptodate(page); + if (!PageUptodate(page)) + SetPageUptodate(page); if (!PageDirty(page)) { f2fs_set_page_dirty_nobuffers(page); inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_META); diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 4a2e97dad9e9..b6fd5bd05e41 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -47,7 +47,8 @@ static void f2fs_read_end_io(struct bio *bio) struct page *page = bvec->bv_page; if (!bio->bi_error) { - SetPageUptodate(page); + if (!PageUptodate(page)) + SetPageUptodate(page); } else { ClearPageUptodate(page); SetPageError(page); @@ -443,7 +444,8 @@ got_it: */ if (dn.data_blkaddr == NEW_ADDR) { zero_user_segment(page, 0, PAGE_SIZE); - SetPageUptodate(page); + if (!PageUptodate(page)) + SetPageUptodate(page); unlock_page(page); return page; } @@ -554,7 +556,8 @@ struct page *get_new_data_page(struct inode *inode, if (dn.data_blkaddr == NEW_ADDR) { zero_user_segment(page, 0, PAGE_SIZE); - SetPageUptodate(page); + if (!PageUptodate(page)) + SetPageUptodate(page); } else { f2fs_put_page(page, 1); @@ -1065,7 +1068,8 @@ got_it: } } else { zero_user_segment(page, 0, PAGE_SIZE); - SetPageUptodate(page); + if (!PageUptodate(page)) + SetPageUptodate(page); unlock_page(page); goto next_page; } @@ -1659,7 +1663,8 @@ repeat: } } out_update: - SetPageUptodate(page); + if (!PageUptodate(page)) + SetPageUptodate(page); out_clear: clear_cold_data(page); return 0; @@ -1813,7 +1818,8 @@ static int f2fs_set_data_page_dirty(struct page *page) trace_f2fs_set_page_dirty(page, DATA); - SetPageUptodate(page); + if (!PageUptodate(page)) + SetPageUptodate(page); if (f2fs_is_atomic_file(inode)) { if (!IS_ATOMIC_WRITTEN_PAGE(page)) { diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index d07e7759f970..2b777a42bf43 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -81,7 +81,8 @@ static int f2fs_vm_page_mkwrite(struct vm_area_struct *vma, zero_user_segment(page, offset, PAGE_SIZE); } set_page_dirty(page); - SetPageUptodate(page); + if (!PageUptodate(page)) + SetPageUptodate(page); trace_f2fs_vm_page_mkwrite(page, DATA); mapped: diff --git a/fs/f2fs/inline.c b/fs/f2fs/inline.c index e10e958250ff..2cd0edcc4ebc 100644 --- a/fs/f2fs/inline.c +++ b/fs/f2fs/inline.c @@ -59,7 +59,8 @@ void read_inline_data(struct page *page, struct page *ipage) memcpy(dst_addr, src_addr, MAX_INLINE_DATA); flush_dcache_page(page); kunmap_atomic(dst_addr); - SetPageUptodate(page); + if (!PageUptodate(page)) + SetPageUptodate(page); } bool truncate_inline_inode(struct page *ipage, u64 from) @@ -97,7 +98,8 @@ int f2fs_read_inline_data(struct inode *inode, struct page *page) else read_inline_data(page, ipage); - SetPageUptodate(page); + if (!PageUptodate(page)) + SetPageUptodate(page); f2fs_put_page(ipage, 1); unlock_page(page); return 0; @@ -370,7 +372,8 @@ static int f2fs_move_inline_dirents(struct inode *dir, struct page *ipage, NR_INLINE_DENTRY * F2FS_SLOT_LEN); kunmap_atomic(dentry_blk); - SetPageUptodate(page); + if (!PageUptodate(page)) + SetPageUptodate(page); set_page_dirty(page); /* clear inline dir and flag after data writeback */ diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c index db73f3c823dc..ca1bb3cc6c32 100644 --- a/fs/f2fs/node.c +++ b/fs/f2fs/node.c @@ -1045,7 +1045,8 @@ struct page *new_node_page(struct dnode_of_data *dn, f2fs_wait_on_page_writeback(page, NODE, true); fill_node_footer(page, dn->nid, dn->inode->i_ino, ofs, true); set_cold_node(dn->inode, page); - SetPageUptodate(page); + if (!PageUptodate(page)) + SetPageUptodate(page); if (set_page_dirty(page)) dn->node_changed = true; @@ -1644,7 +1645,8 @@ static int f2fs_set_node_page_dirty(struct page *page) { trace_f2fs_set_page_dirty(page, NODE); - SetPageUptodate(page); + if (!PageUptodate(page)) + SetPageUptodate(page); if (!PageDirty(page)) { f2fs_set_page_dirty_nobuffers(page); inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES); @@ -2015,7 +2017,8 @@ int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) /* Should not use this inode from free nid list */ remove_free_nid(NM_I(sbi), ino); - SetPageUptodate(ipage); + if (!PageUptodate(ipage)) + SetPageUptodate(ipage); fill_node_footer(ipage, ino, ino, 0, true); src = F2FS_INODE(page); -- 2.30.2