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f2fs: reuse inode_entry_slab in gc procedure for using slab more effectively

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There are two slab cache inode_entry_slab and winode_slab using the same
structure as below:

struct dir_inode_entry {
	struct list_head list;	/* list head */
	struct inode *inode;	/* vfs inode pointer */
};

struct inode_entry {
	struct list_head list;
	struct inode *inode;
};

It's a little waste that the two cache can not share their memory space for each
other.
So in this patch we remove one redundant winode_slab slab cache, then use more
universal name struct inode_entry as remaining data structure name of slab,
finally we reuse the inode_entry_slab to store dirty dir item and gc item for
more effective.

Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu
2014-12-29 15:56:18 +08:00
committed by Jaegeuk Kim
parent 2ace38e00e
commit 062920734c
6 changed files with 24 additions and 45 deletions
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8
fs/f2fs/super.c
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@@ -1231,12 +1231,9 @@ static int __init init_f2fs_fs(void)
err = create_segment_manager_caches();
if (err)
goto free_node_manager_caches;
err = create_gc_caches();
if (err)
goto free_segment_manager_caches;
err = create_checkpoint_caches();
if (err)
goto free_gc_caches;
goto free_segment_manager_caches;
f2fs_kset = kset_create_and_add("f2fs", NULL, fs_kobj);
if (!f2fs_kset) {
err = -ENOMEM;
@@ -1253,8 +1250,6 @@ free_kset:
kset_unregister(f2fs_kset);
free_checkpoint_caches:
destroy_checkpoint_caches();
free_gc_caches:
destroy_gc_caches();
free_segment_manager_caches:
destroy_segment_manager_caches();
free_node_manager_caches:
@@ -1271,7 +1266,6 @@ static void __exit exit_f2fs_fs(void)
f2fs_destroy_root_stats();
unregister_filesystem(&f2fs_fs_type);
destroy_checkpoint_caches();
destroy_gc_caches();
destroy_segment_manager_caches();
destroy_node_manager_caches();
destroy_inodecache();