From c0c93ec345af90c90de92dc2ef4fe66de1e638a5 Mon Sep 17 00:00:00 2001 From: Jaegeuk Kim Date: Fri, 14 Jun 2013 08:52:35 +0900 Subject: f2fs: recover wrong pino after checkpoint during fsync If a file is linked, f2fs loose its parent inode number so that fsync calls for the linked file should do checkpoint all the time. But, if we can recover its parent inode number after the checkpoint, we can adjust roll-forward mechanism for the further fsync calls, which is able to improve the fsync performance significatly. Signed-off-by: Jaegeuk Kim --- fs/f2fs/dir.c | 2 +- fs/f2fs/f2fs.h | 2 +- fs/f2fs/file.c | 31 ++++++++++++++++++++++++++++++- fs/f2fs/namei.c | 2 +- fs/f2fs/node.h | 15 +++++++++++---- fs/f2fs/segment.c | 2 +- 6 files changed, 45 insertions(+), 9 deletions(-) (limited to 'fs') diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c index 69ca049b516..4f21452f929 100644 --- a/fs/f2fs/dir.c +++ b/fs/f2fs/dir.c @@ -356,7 +356,7 @@ static struct page *init_inode_metadata(struct inode *inode, * We lost i_pino from now on. */ if (is_inode_flag_set(F2FS_I(inode), FI_INC_LINK)) { - set_cp_file(inode); + file_lost_pino(inode); inc_nlink(inode); } return page; diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 3e7cb33b64d..863a5e91d84 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -151,7 +151,7 @@ struct extent_info { * i_advise uses FADVISE_XXX_BIT. We can add additional hints later. */ #define FADVISE_COLD_BIT 0x01 -#define FADVISE_CP_BIT 0x02 +#define FADVISE_LOST_PINO_BIT 0x02 struct f2fs_inode_info { struct inode vfs_inode; /* serve a vfs inode */ diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index fda226ff184..d2d2b7dbdcc 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -102,6 +102,24 @@ static const struct vm_operations_struct f2fs_file_vm_ops = { .remap_pages = generic_file_remap_pages, }; +static int get_parent_ino(struct inode *inode, nid_t *pino) +{ + struct dentry *dentry; + + inode = igrab(inode); + dentry = d_find_any_alias(inode); + iput(inode); + if (!dentry) + return 0; + + inode = igrab(dentry->d_parent->d_inode); + dput(dentry); + + *pino = inode->i_ino; + iput(inode); + return 1; +} + int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) { struct inode *inode = file->f_mapping->host; @@ -134,7 +152,7 @@ int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) if (!S_ISREG(inode->i_mode) || inode->i_nlink != 1) need_cp = true; - else if (is_cp_file(inode)) + else if (file_wrong_pino(inode)) need_cp = true; else if (!space_for_roll_forward(sbi)) need_cp = true; @@ -142,8 +160,19 @@ int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) need_cp = true; if (need_cp) { + nid_t pino; + /* all the dirty node pages should be flushed for POR */ ret = f2fs_sync_fs(inode->i_sb, 1); + if (file_wrong_pino(inode) && inode->i_nlink == 1 && + get_parent_ino(inode, &pino)) { + F2FS_I(inode)->i_pino = pino; + file_got_pino(inode); + mark_inode_dirty_sync(inode); + ret = f2fs_write_inode(inode, NULL); + if (ret) + goto out; + } } else { /* if there is no written node page, write its inode page */ while (!sync_node_pages(sbi, inode->i_ino, &wbc)) { diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c index 810444ee6b5..64c07169df0 100644 --- a/fs/f2fs/namei.c +++ b/fs/f2fs/namei.c @@ -112,7 +112,7 @@ static inline void set_cold_files(struct f2fs_sb_info *sbi, struct inode *inode, int count = le32_to_cpu(sbi->raw_super->extension_count); for (i = 0; i < count; i++) { if (is_multimedia_file(name, extlist[i])) { - set_cold_file(inode); + file_set_cold(inode); break; } } diff --git a/fs/f2fs/node.h b/fs/f2fs/node.h index a503661307d..c65fb4f4230 100644 --- a/fs/f2fs/node.h +++ b/fs/f2fs/node.h @@ -285,10 +285,17 @@ static inline void set_file(struct inode *inode, int type) F2FS_I(inode)->i_advise |= type; } -#define is_cold_file(inode) is_file(inode, FADVISE_COLD_BIT) -#define is_cp_file(inode) is_file(inode, FADVISE_CP_BIT) -#define set_cold_file(inode) set_file(inode, FADVISE_COLD_BIT) -#define set_cp_file(inode) set_file(inode, FADVISE_CP_BIT) +static inline void clear_file(struct inode *inode, int type) +{ + F2FS_I(inode)->i_advise &= ~type; +} + +#define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT) +#define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT) +#define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT) +#define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT) +#define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT) +#define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT) static inline int is_cold_data(struct page *page) { diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index b15debcccc2..0e1a60a4eb3 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -796,7 +796,7 @@ static int __get_segment_type_6(struct page *page, enum page_type p_type) if (S_ISDIR(inode->i_mode)) return CURSEG_HOT_DATA; - else if (is_cold_data(page) || is_cold_file(inode)) + else if (is_cold_data(page) || file_is_cold(inode)) return CURSEG_COLD_DATA; else return CURSEG_WARM_DATA; -- cgit v1.2.3