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| author | Jaegeuk Kim <jaegeuk.kim@samsung.com> | 2013-10-24 14:19:18 +0900 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk.kim@samsung.com> | 2013-10-25 16:54:38 +0900 |
| commit | 4660f9c0fe484353b17a4b9d1cc2b036fa895f76 (patch) | |
| tree | b992484821791c6b87dc3debfc7df6139dff6480 /fs/f2fs | |
| parent | 81eb8d6e2869b119d4a7b8c02091c3779733a3ac (diff) | |
| download | op-kernel-dev-4660f9c0fe484353b17a4b9d1cc2b036fa895f76.zip op-kernel-dev-4660f9c0fe484353b17a4b9d1cc2b036fa895f76.tar.gz | |
f2fs: introduce f2fs_balance_fs_bg for some background jobs
This patch merges some background jobs into this new function.
Signed-off-by: Changman Lee <cm224.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Diffstat (limited to 'fs/f2fs')
| -rw-r--r-- | fs/f2fs/f2fs.h | 2 | ||||
| -rw-r--r-- | fs/f2fs/gc.c | 5 | ||||
| -rw-r--r-- | fs/f2fs/node.c | 10 | ||||
| -rw-r--r-- | fs/f2fs/segment.c | 8 |
4 files changed, 15 insertions, 10 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 6dff777..a61cc5f 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -965,6 +965,7 @@ long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long); */ void f2fs_set_inode_flags(struct inode *); struct inode *f2fs_iget(struct super_block *, unsigned long); +int try_to_free_nats(struct f2fs_sb_info *, int); void update_inode(struct inode *, struct page *); int update_inode_page(struct inode *); int f2fs_write_inode(struct inode *, struct writeback_control *); @@ -1045,6 +1046,7 @@ void destroy_node_manager_caches(void); * segment.c */ void f2fs_balance_fs(struct f2fs_sb_info *); +void f2fs_balance_fs_bg(struct f2fs_sb_info *); void invalidate_blocks(struct f2fs_sb_info *, block_t); void clear_prefree_segments(struct f2fs_sb_info *); int npages_for_summary_flush(struct f2fs_sb_info *); diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c index 783c6cc..b7ad1ec 100644 --- a/fs/f2fs/gc.c +++ b/fs/f2fs/gc.c @@ -83,9 +83,8 @@ static int gc_thread_func(void *data) if (f2fs_gc(sbi)) wait_ms = gc_th->no_gc_sleep_time; - /* balancing prefree segments */ - if (excess_prefree_segs(sbi)) - f2fs_sync_fs(sbi->sb, true); + /* balancing f2fs's metadata periodically */ + f2fs_balance_fs_bg(sbi); } while (!kthread_should_stop()); return 0; diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c index 89dd8a5..7bac481 100644 --- a/fs/f2fs/node.c +++ b/fs/f2fs/node.c @@ -240,7 +240,7 @@ retry: write_unlock(&nm_i->nat_tree_lock); } -static int try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink) +int try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink) { struct f2fs_nm_info *nm_i = NM_I(sbi); @@ -1205,12 +1205,8 @@ static int f2fs_write_node_pages(struct address_space *mapping, struct f2fs_sb_info *sbi = F2FS_SB(mapping->host->i_sb); long nr_to_write = wbc->nr_to_write; - /* First check balancing cached NAT entries */ - if (try_to_free_nats(sbi, NAT_ENTRY_PER_BLOCK) || - excess_prefree_segs(sbi)) { - f2fs_sync_fs(sbi->sb, true); - return 0; - } + /* balancing f2fs's metadata in background */ + f2fs_balance_fs_bg(sbi); /* collect a number of dirty node pages and write together */ if (get_pages(sbi, F2FS_DIRTY_NODES) < COLLECT_DIRTY_NODES) diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index 62b52f2..8e5ca28 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -36,6 +36,14 @@ void f2fs_balance_fs(struct f2fs_sb_info *sbi) } } +void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi) +{ + /* check the # of cached NAT entries and prefree segments */ + if (try_to_free_nats(sbi, NAT_ENTRY_PER_BLOCK) || + excess_prefree_segs(sbi)) + f2fs_sync_fs(sbi->sb, true); +} + static void __locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno, enum dirty_type dirty_type) { |
