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authorChao Yu <chao2.yu@samsung.com>2015-02-05 17:52:58 +0800
committerJaegeuk Kim <jaegeuk@kernel.org>2015-03-03 09:58:46 -0800
commit13054c548a1c9e78f8f8ba5f134909cb56152285 (patch)
tree657f4a0c7513ec78082df926bf22f58e704e2b10 /fs/f2fs/node.h
parent7e4dde79df7cdf8b40282857e030c7572ff04886 (diff)
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f2fs: introduce infra macro and data structure of rb-tree extent cache
Introduce infra macro and data structure for rb-tree based extent cache: Macros: * EXT_TREE_VEC_SIZE: indicate vector size for gang lookup in extent tree. * F2FS_MIN_EXTENT_LEN: indicate minimum length of extent managed in cache. * EXTENT_CACHE_SHRINK_NUMBER: indicate number of extent in cache will be shrunk. Basic data structures for extent cache: * struct extent_tree: extent tree entry per inode. * struct extent_node: extent info node linked in extent tree. Besides, adding new extent cache related fields in f2fs_sb_info. Signed-off-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Changman Lee <cm224.lee@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/node.h')
-rw-r--r--fs/f2fs/node.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/f2fs/node.h b/fs/f2fs/node.h
index f405bbf2435a..c56026f1725c 100644
--- a/fs/f2fs/node.h
+++ b/fs/f2fs/node.h
@@ -120,6 +120,7 @@ enum mem_type {
NAT_ENTRIES, /* indicates the cached nat entry */
DIRTY_DENTS, /* indicates dirty dentry pages */
INO_ENTRIES, /* indicates inode entries */
+ EXTENT_CACHE, /* indicates extent cache */
BASE_CHECK, /* check kernel status */
};