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author | Jaegeuk Kim <jaegeuk@kernel.org> | 2016-01-25 05:57:05 -0800 |
---|---|---|
committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2016-02-22 16:07:23 -0800 |
commit | 2049d4fcb057c263929bec480f2db079d25fd601 (patch) | |
tree | e9dbf53cb32e866f49cea252fe84dde9837ada4a /fs/f2fs | |
parent | 3c082b7b5b28be606ed9ef11e4741df7c722c92e (diff) | |
download | linux-2049d4fcb057c263929bec480f2db079d25fd601.tar.bz2 |
f2fs: avoid multiple node page writes due to inline_data
The sceanrio is:
1. create fully node blocks
2. flush node blocks
3. write inline_data for all the node blocks again
4. flush node blocks redundantly
So, this patch tries to flush inline_data when flushing node blocks.
Reviewed-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs')
-rw-r--r-- | fs/f2fs/data.c | 1 | ||||
-rw-r--r-- | fs/f2fs/inline.c | 2 | ||||
-rw-r--r-- | fs/f2fs/inode.c | 4 | ||||
-rw-r--r-- | fs/f2fs/node.c | 41 | ||||
-rw-r--r-- | fs/f2fs/node.h | 15 |
5 files changed, 63 insertions, 0 deletions
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 1b08480c5e38..a11a8c789cd5 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -1463,6 +1463,7 @@ restart: if (pos + len <= MAX_INLINE_DATA) { read_inline_data(page, ipage); set_inode_flag(F2FS_I(inode), FI_DATA_EXIST); + set_inline_node(ipage); sync_inode_page(&dn); } else { err = f2fs_convert_inline_page(&dn, page); diff --git a/fs/f2fs/inline.c b/fs/f2fs/inline.c index c3f0b7d4cfca..738b761cc1ef 100644 --- a/fs/f2fs/inline.c +++ b/fs/f2fs/inline.c @@ -159,6 +159,7 @@ no_update: /* clear inline data and flag after data writeback */ truncate_inline_inode(dn->inode_page, 0); + clear_inline_node(dn->inode_page); clear_out: stat_dec_inline_inode(dn->inode); f2fs_clear_inline_inode(dn->inode); @@ -233,6 +234,7 @@ int f2fs_write_inline_data(struct inode *inode, struct page *page) set_inode_flag(F2FS_I(inode), FI_DATA_EXIST); sync_inode_page(&dn); + clear_inline_node(dn.inode_page); f2fs_put_dnode(&dn); return 0; } diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c index 2adeff26be11..909917150d2b 100644 --- a/fs/f2fs/inode.c +++ b/fs/f2fs/inode.c @@ -263,6 +263,10 @@ int update_inode(struct inode *inode, struct page *node_page) set_cold_node(inode, node_page); clear_inode_flag(F2FS_I(inode), FI_DIRTY_INODE); + /* deleted inode */ + if (inode->i_nlink == 0) + clear_inline_node(node_page); + return set_page_dirty(node_page); } diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c index 636928195224..aa3ca79ab737 100644 --- a/fs/f2fs/node.c +++ b/fs/f2fs/node.c @@ -1154,6 +1154,39 @@ void sync_inode_page(struct dnode_of_data *dn) dn->node_changed = ret ? true: false; } +static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino) +{ + struct inode *inode; + struct page *page; + + /* should flush inline_data before evict_inode */ + inode = ilookup(sbi->sb, ino); + if (!inode) + return; + + page = pagecache_get_page(inode->i_mapping, 0, FGP_LOCK|FGP_NOWAIT, 0); + if (!page) + goto iput_out; + + if (!PageUptodate(page)) + goto page_out; + + if (!PageDirty(page)) + goto page_out; + + if (!clear_page_dirty_for_io(page)) + goto page_out; + + if (!f2fs_write_inline_data(inode, page)) + inode_dec_dirty_pages(inode); + else + set_page_dirty(page); +page_out: + f2fs_put_page(page, 1); +iput_out: + iput(inode); +} + int sync_node_pages(struct f2fs_sb_info *sbi, nid_t ino, struct writeback_control *wbc) { @@ -1221,6 +1254,14 @@ continue_unlock: goto continue_unlock; } + /* flush inline_data */ + if (!ino && is_inline_node(page)) { + clear_inline_node(page); + unlock_page(page); + flush_inline_data(sbi, ino_of_node(page)); + continue; + } + if (!clear_page_dirty_for_io(page)) goto continue_unlock; diff --git a/fs/f2fs/node.h b/fs/f2fs/node.h index 56c451921522..8f405d243e49 100644 --- a/fs/f2fs/node.h +++ b/fs/f2fs/node.h @@ -379,6 +379,21 @@ static inline int is_node(struct page *page, int type) #define is_fsync_dnode(page) is_node(page, FSYNC_BIT_SHIFT) #define is_dent_dnode(page) is_node(page, DENT_BIT_SHIFT) +static inline int is_inline_node(struct page *page) +{ + return PageChecked(page); +} + +static inline void set_inline_node(struct page *page) +{ + SetPageChecked(page); +} + +static inline void clear_inline_node(struct page *page) +{ + ClearPageChecked(page); +} + static inline void set_cold_node(struct inode *inode, struct page *page) { struct f2fs_node *rn = F2FS_NODE(page); |