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Date: Mon, 20 Jan 2014 18:37:04 +0800
From: Gu Zheng <guz.fnst@...fujitsu.com>
To: Kim <jaegeuk.kim@...sung.com>
CC: f2fs <linux-f2fs-devel@...ts.sourceforge.net>,
fsdevel <linux-fsdevel@...r.kernel.org>,
linux-kernel <linux-kernel@...r.kernel.org>
Subject: [PATCH 1/2] f2fs: add help function META_MAPPING
Introduce help function META_MAPPING() to get the cache meta blocks'
address space.
Signed-off-by: Gu Zheng <guz.fnst@...fujitsu.com>
---
fs/f2fs/checkpoint.c | 8 ++++----
fs/f2fs/debug.c | 4 ++--
fs/f2fs/f2fs.h | 5 +++++
fs/f2fs/node.c | 2 +-
fs/f2fs/segment.c | 2 +-
5 files changed, 13 insertions(+), 8 deletions(-)
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index 4de0345..f9d4f7d 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -30,7 +30,7 @@ static struct kmem_cache *inode_entry_slab;
*/
struct page *grab_meta_page(struct f2fs_sb_info *sbi, pgoff_t index)
{
- struct address_space *mapping = sbi->meta_inode->i_mapping;
+ struct address_space *mapping = META_MAPPING(sbi);
struct page *page = NULL;
repeat:
page = grab_cache_page(mapping, index);
@@ -50,7 +50,7 @@ repeat:
*/
struct page *get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index)
{
- struct address_space *mapping = sbi->meta_inode->i_mapping;
+ struct address_space *mapping = META_MAPPING(sbi);
struct page *page;
repeat:
page = grab_cache_page(mapping, index);
@@ -128,7 +128,7 @@ static int f2fs_write_meta_pages(struct address_space *mapping,
long sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type,
long nr_to_write)
{
- struct address_space *mapping = sbi->meta_inode->i_mapping;
+ struct address_space *mapping = META_MAPPING(sbi);
pgoff_t index = 0, end = LONG_MAX;
struct pagevec pvec;
long nwritten = 0;
@@ -771,7 +771,7 @@ static void do_checkpoint(struct f2fs_sb_info *sbi, bool is_umount)
wait_on_all_pages_writeback(sbi);
filemap_fdatawait_range(sbi->node_inode->i_mapping, 0, LONG_MAX);
- filemap_fdatawait_range(sbi->meta_inode->i_mapping, 0, LONG_MAX);
+ filemap_fdatawait_range(META_MAPPING(sbi), 0, LONG_MAX);
/* update user_block_counts */
sbi->last_valid_block_count = sbi->total_valid_block_count;
diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c
index 63cb7e2..8bdc365 100644
--- a/fs/f2fs/debug.c
+++ b/fs/f2fs/debug.c
@@ -53,7 +53,7 @@ static void update_general_status(struct f2fs_sb_info *sbi)
si->prefree_count = prefree_segments(sbi);
si->dirty_count = dirty_segments(sbi);
si->node_pages = sbi->node_inode->i_mapping->nrpages;
- si->meta_pages = sbi->meta_inode->i_mapping->nrpages;
+ si->meta_pages = META_MAPPING(sbi)->nrpages;
si->nats = NM_I(sbi)->nat_cnt;
si->sits = SIT_I(sbi)->dirty_sentries;
si->fnids = NM_I(sbi)->fcnt;
@@ -168,7 +168,7 @@ get_cache:
si->cache_mem += NM_I(sbi)->nat_cnt;
npages = sbi->node_inode->i_mapping->nrpages;
si->cache_mem += npages << PAGE_CACHE_SHIFT;
- npages = sbi->meta_inode->i_mapping->nrpages;
+ npages = META_MAPPING(sbi)->nrpages;
si->cache_mem += npages << PAGE_CACHE_SHIFT;
si->cache_mem += sbi->n_orphans * sizeof(struct orphan_inode_entry);
si->cache_mem += sbi->n_dirty_dirs * sizeof(struct dir_inode_entry);
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 5ab3981..117e30f 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -533,6 +533,11 @@ static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
}
+static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
+{
+ return sbi->meta_inode->i_mapping;
+}
+
static inline void F2FS_SET_SB_DIRT(struct f2fs_sb_info *sbi)
{
sbi->s_dirty = 1;
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 226a05a..527bd12 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -87,7 +87,7 @@ static struct page *get_next_nat_page(struct f2fs_sb_info *sbi, nid_t nid)
*/
static void ra_nat_pages(struct f2fs_sb_info *sbi, int nid)
{
- struct address_space *mapping = sbi->meta_inode->i_mapping;
+ struct address_space *mapping = META_MAPPING(sbi);
struct f2fs_nm_info *nm_i = NM_I(sbi);
struct page *page;
pgoff_t index;
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index e82423fb..7caac5f 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -1585,7 +1585,7 @@ static int build_curseg(struct f2fs_sb_info *sbi)
static int ra_sit_pages(struct f2fs_sb_info *sbi, int start, int nrpages)
{
- struct address_space *mapping = sbi->meta_inode->i_mapping;
+ struct address_space *mapping = META_MAPPING(sbi);
struct page *page;
block_t blk_addr, prev_blk_addr = 0;
int sit_blk_cnt = SIT_BLK_CNT(sbi);
--
1.7.7
--
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