From: Jaegeuk Kim Date: Sat, 21 May 2016 03:42:37 +0000 (-0700) Subject: f2fs: avoid unnecessary updating inode during fsync X-Git-Tag: v4.8-rc1~145^2~59 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=26de9b11713057a16a9220423a2f137774763b0e;p=karo-tx-linux.git f2fs: avoid unnecessary updating inode during fsync If roll-forward recovery can recover i_size, we don't need to update inode's metadata during fsync. Signed-off-by: Jaegeuk Kim --- diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index a3dea51f4702..287582e12f8f 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -1204,6 +1204,7 @@ static int f2fs_write_data_page(struct page *page, loff_t i_size = i_size_read(inode); const pgoff_t end_index = ((unsigned long long) i_size) >> PAGE_SHIFT; + loff_t psize = (page->index + 1) << PAGE_SHIFT; unsigned offset = 0; bool need_balance_fs = false; int err = 0; @@ -1265,6 +1266,8 @@ write: err = f2fs_write_inline_data(inode, page); if (err == -EAGAIN) 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); done: if (err && err != -ENOENT) diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 2adef0e58461..bf1c8b0ef6c7 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -441,6 +441,7 @@ struct f2fs_inode_info { unsigned int clevel; /* maximum level of given file name */ nid_t i_xattr_nid; /* node id that contains xattrs */ unsigned long long xattr_ver; /* cp version of xattr modification */ + loff_t last_disk_size; /* lastly written file size */ struct list_head dirty_list; /* dirty list for dirs and files */ struct list_head gdirty_list; /* linked in global dirty list */ @@ -1516,6 +1517,7 @@ static inline void f2fs_change_bit(unsigned int nr, char *addr) enum { FI_NEW_INODE, /* indicate newly allocated inode */ FI_DIRTY_INODE, /* indicate inode is dirty or not */ + FI_AUTO_RECOVER, /* indicate inode is recoverable */ FI_DIRTY_DIR, /* indicate directory has dirty pages */ FI_INC_LINK, /* need to increment i_nlink */ FI_ACL_MODE, /* indicate acl mode */ @@ -1591,18 +1593,35 @@ static inline void f2fs_i_links_write(struct inode *inode, bool inc) static inline void f2fs_i_blocks_write(struct inode *inode, blkcnt_t diff, bool add) { + bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE); + bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER); + inode->i_blocks = add ? inode->i_blocks + diff : inode->i_blocks - diff; mark_inode_dirty_sync(inode); + if (clean || recover) + set_inode_flag(inode, FI_AUTO_RECOVER); } static inline void f2fs_i_size_write(struct inode *inode, loff_t i_size) { + bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE); + bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER); + if (i_size_read(inode) == i_size) return; i_size_write(inode, i_size); mark_inode_dirty_sync(inode); + if (clean || recover) + set_inode_flag(inode, FI_AUTO_RECOVER); +} + +static inline bool f2fs_skip_inode_update(struct inode *inode) +{ + if (!is_inode_flag_set(inode, FI_AUTO_RECOVER)) + return false; + return F2FS_I(inode)->last_disk_size == i_size_read(inode); } static inline void f2fs_i_depth_write(struct inode *inode, unsigned int depth) @@ -1936,8 +1955,8 @@ void ra_node_page(struct f2fs_sb_info *, nid_t); struct page *get_node_page(struct f2fs_sb_info *, pgoff_t); struct page *get_node_page_ra(struct page *, int); void move_node_page(struct page *, int); -int fsync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *, - bool); +int fsync_node_pages(struct f2fs_sb_info *, struct inode *, + struct writeback_control *, bool); int sync_node_pages(struct f2fs_sb_info *, struct writeback_control *); bool alloc_nid(struct f2fs_sb_info *, nid_t *); void alloc_nid_done(struct f2fs_sb_info *, nid_t); diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 73bc946974ad..23decf050236 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -208,7 +208,7 @@ static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end, } /* if the inode is dirty, let's recover all the time */ - if (!datasync) { + if (!datasync && !f2fs_skip_inode_update(inode)) { f2fs_write_inode(inode, NULL); goto go_write; } @@ -251,7 +251,7 @@ go_write: goto out; } sync_nodes: - ret = fsync_node_pages(sbi, ino, &wbc, atomic); + ret = fsync_node_pages(sbi, inode, &wbc, atomic); if (ret) goto out; diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c index 2d892b6d5632..bdd814db883e 100644 --- a/fs/f2fs/inode.c +++ b/fs/f2fs/inode.c @@ -154,6 +154,9 @@ static int do_read_inode(struct inode *inode) if (__written_first_block(ri)) set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN); + if (!need_inode_block_update(sbi, inode->i_ino)) + fi->last_disk_size = inode->i_size; + f2fs_put_page(node_page, 1); stat_inc_inline_xattr(inode); diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c index 82f0f833151e..641d60392bff 100644 --- a/fs/f2fs/node.c +++ b/fs/f2fs/node.c @@ -1293,7 +1293,7 @@ continue_unlock: return last_page; } -int fsync_node_pages(struct f2fs_sb_info *sbi, nid_t ino, +int fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode, struct writeback_control *wbc, bool atomic) { pgoff_t index, end; @@ -1301,6 +1301,7 @@ int fsync_node_pages(struct f2fs_sb_info *sbi, nid_t ino, int ret = 0; struct page *last_page = NULL; bool marked = false; + nid_t ino = inode->i_ino; if (atomic) { last_page = last_fsync_dnode(sbi, ino); @@ -1354,9 +1355,13 @@ continue_unlock: if (!atomic || page == last_page) { set_fsync_mark(page, 1); - if (IS_INODE(page)) + if (IS_INODE(page)) { + if (is_inode_flag_set(inode, + FI_DIRTY_INODE)) + update_inode(inode, page); set_dentry_mark(page, need_dentry_mark(sbi, ino)); + } /* may be written by other thread */ if (!PageDirty(page)) set_page_dirty(page); diff --git a/fs/f2fs/recovery.c b/fs/f2fs/recovery.c index 68c433f17ab5..b568b28c74f2 100644 --- a/fs/f2fs/recovery.c +++ b/fs/f2fs/recovery.c @@ -455,6 +455,9 @@ static int do_recover_data(struct f2fs_sb_info *sbi, struct inode *inode, continue; } + if ((start + 1) << PAGE_SHIFT > i_size_read(inode)) + f2fs_i_size_write(inode, (start + 1) << PAGE_SHIFT); + /* * dest is reserved block, invalidate src block * and then reserve one new block in dnode page. diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index b5144b81e4c4..6fa4ec8ea1f7 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -613,6 +613,9 @@ static void f2fs_dirty_inode(struct inode *inode, int flags) inode->i_ino == F2FS_META_INO(sbi)) return; + if (is_inode_flag_set(inode, FI_AUTO_RECOVER)) + clear_inode_flag(inode, FI_AUTO_RECOVER); + spin_lock(&sbi->inode_lock[DIRTY_META]); if (is_inode_flag_set(inode, FI_DIRTY_INODE)) { spin_unlock(&sbi->inode_lock[DIRTY_META]); @@ -638,6 +641,7 @@ void f2fs_inode_synced(struct inode *inode) } list_del_init(&F2FS_I(inode)->gdirty_list); clear_inode_flag(inode, FI_DIRTY_INODE); + clear_inode_flag(inode, FI_AUTO_RECOVER); dec_page_count(sbi, F2FS_DIRTY_IMETA); spin_unlock(&sbi->inode_lock[DIRTY_META]); stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META);