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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2015-06-19 22:01:21 +0300 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2015-08-05 00:09:54 +0300 |
| commit | 2658e50de61429f57d9496bfe371f232e2d039a1 (patch) | |
| tree | 741bcc6a3c0df01f3180eb6cb934019313959ca4 /fs/f2fs/f2fs.h | |
| parent | 244f4fc1c530c4e486f0e4f0909c0514e4539ba2 (diff) | |
| download | linux-2658e50de61429f57d9496bfe371f232e2d039a1.tar.xz | |
f2fs: introduce a shrinker for mounted fs
This patch introduces a shrinker targeting to reduce memory footprint consumed
by a number of in-memory f2fs data structures.
In addition, it newly adds:
- sbi->umount_mutex to avoid data races on shrinker and put_super
- sbi->shruinker_run_no to not revisit objects
Note that the basic implementation was copied from fs/ubifs/shrinker.c
Reviewed-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/f2fs.h')
| -rw-r--r-- | fs/f2fs/f2fs.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 3aaa4b99050a..e82af8c7ee8c 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -791,6 +791,11 @@ struct f2fs_sb_info { /* For sysfs suppport */ struct kobject s_kobj; struct completion s_kobj_unregister; + + /* For shrinker support */ + struct list_head s_list; + struct mutex umount_mutex; + unsigned int shrinker_run_no; }; /* @@ -1952,6 +1957,14 @@ int f2fs_read_inline_dir(struct file *, struct dir_context *, struct f2fs_str *); /* + * shrinker.c + */ +unsigned long f2fs_shrink_count(struct shrinker *, struct shrink_control *); +unsigned long f2fs_shrink_scan(struct shrinker *, struct shrink_control *); +void f2fs_join_shrinker(struct f2fs_sb_info *); +void f2fs_leave_shrinker(struct f2fs_sb_info *); + +/* * crypto support */ static inline int f2fs_encrypted_inode(struct inode *inode) |