kernel/git/stable/linux.git/fs/f2fs/shrinker.c, branch linux-4.8.y

f2fs: produce more nids and reduce readahead nats

2016-07-06T17:44:08+00:00

The readahead nat pages are more likely to be reclaimed quickly, so it'd better to gather more free nids in advance. And, let's keep some free nids as much as possible. Signed-off-by: Jaegeuk Kim

f2fs: speed up shrinking extent tree entries

2015-12-30T18:13:00+00:00

If there is no candidates for shrinking slab entries, we don't need to traverse any trees at all. Reviewed-by: Chao Yu [Jaegeuk Kim: fix missing initialization reported by Yunlei He] Signed-off-by: Jaegeuk Kim

f2fs: use atomic variable for total_extent_tree

2015-12-22T18:31:41+00:00

It would be better to use atomic variable for total_extent_tree. Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: shrink free_nids entries

2015-08-20T16:00:06+00:00

This patch introduces __count_free_nids/try_to_free_nids and registers them in slab shrinker for shrinking under memory pressure. Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: use extent_cache by default

2015-08-04T21:09:56+00:00

We don't need to handle the duplicate extent information. The integrated rule is: - update on-disk extent with largest one tracked by in-memory extent_cache - destroy extent_tree for the truncation case - drop per-inode extent_cache by shrinker Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: shrink extent_cache entries

2015-08-04T21:09:55+00:00

This patch registers shrinking extent_caches. Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: shrink nat_cache entries

2015-08-04T21:09:55+00:00

This patch registers shrinking nat_cache entries. Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: introduce a shrinker for mounted fs

2015-08-04T21:09:54+00:00

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 Signed-off-by: Jaegeuk Kim