xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ext4: remove single extent cache

Browse Source 
Single extent cache could be removed because we have extent status tree
as a extent cache, and it would be better.

Signed-off-by: Zheng Liu <wenqing.lz@taobao.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: Jan kara <jack@suse.cz>
This commit is contained in:
Zheng Liu
2013-02-18 00:31:07 -05:00
committed by Theodore Ts'o
parent d100eef244
commit 69eb33dc24
5 changed files with 38 additions and 163 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
fs/ext4/ext4.h
View File

@@ -809,17 +809,6 @@ do { \
#endif /* defined(__KERNEL__) || defined(__linux__) */
/*
* storage for cached extent
* If ec_len == 0, then the cache is invalid.
* If ec_start == 0, then the cache represents a gap (null mapping)
*/
struct ext4_ext_cache {
ext4_fsblk_t ec_start;
ext4_lblk_t ec_block;
__u32 ec_len; /* must be 32bit to return holes */
};
#include "extents_status.h"
/*
@@ -886,7 +875,6 @@ struct ext4_inode_info {
struct inode vfs_inode;
struct jbd2_inode *jinode;
struct ext4_ext_cache i_cached_extent;
/*
* File creation time. Its function is same as that of
* struct timespec i_{a,c,m}time in the generic inode.