lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

[PATCH] ext4: uninitialised extent handling

Browse Source 
Make it possible to add file preallocation support in future as an RO_COMPAT
feature by recognizing uninitialized extents as holes and limiting extent
length to keep the top bit of ee_len free for marking uninitialized extents.

Signed-off-by: Suparna Bhattacharya <suparna@in.ibm.com>
Signed-off-by: Mingming Cao <cmm@us.ibm.com>
Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Suparna Bhattacharya
2006-10-11 01:21:06 -07:00
committed by Linus Torvalds
parent f65e6fba16
commit 471d4011a9
2 changed files with 18 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
include/linux/ext4_fs_extents.h
View File

@@ -141,6 +141,8 @@ typedef int (*ext_prepare_callback)(struct inode *, struct ext4_ext_path *,
#define EXT_MAX_BLOCK 0xffffffff
#define EXT_MAX_LEN ((1UL << 15) - 1)
#define EXT_FIRST_EXTENT(__hdr__) \
((struct ext4_extent *) (((char *) (__hdr__)) + \