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| author | Zhiguo Niu <zhiguo.niu@unisoc.com> | 2024-11-08 09:25:56 +0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2024-11-21 16:12:30 +0000 |
| commit | 77569f785c8624fa4189795fb52e635a973672e5 (patch) | |
| tree | b619d3d370ec5b2a87989380bc52bad34b5fdb36 /include | |
| parent | 7461f37094180200cb2f98e60ef99a0cea97beec (diff) | |
| download | lwn-77569f785c8624fa4189795fb52e635a973672e5.tar.gz lwn-77569f785c8624fa4189795fb52e635a973672e5.zip | |
f2fs: fix to adjust appropriate length for fiemap
If user give a file size as "length" parameter for fiemap
operations, but if this size is non-block size aligned,
it will show 2 segments fiemap results even this whole file
is contiguous on disk, such as the following results:
./f2fs_io fiemap 0 19034 ylog/analyzer.py
Fiemap: offset = 0 len = 19034
logical addr. physical addr. length flags
0 0000000000000000 0000000020baa000 0000000000004000 00001000
1 0000000000004000 0000000020bae000 0000000000001000 00001001
after this patch:
./f2fs_io fiemap 0 19034 ylog/analyzer.py
Fiemap: offset = 0 len = 19034
logical addr. physical addr. length flags
0 0000000000000000 00000000315f3000 0000000000005000 00001001
Signed-off-by: Zhiguo Niu <zhiguo.niu@unisoc.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/f2fs_fs.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/f2fs_fs.h b/include/linux/f2fs_fs.h index 3b2ad444c002..c24f8bc01045 100644 --- a/include/linux/f2fs_fs.h +++ b/include/linux/f2fs_fs.h @@ -24,6 +24,7 @@ #define NEW_ADDR ((block_t)-1) /* used as block_t addresses */ #define COMPRESS_ADDR ((block_t)-2) /* used as compressed data flag */ +#define F2FS_BLKSIZE_MASK (F2FS_BLKSIZE - 1) #define F2FS_BYTES_TO_BLK(bytes) ((unsigned long long)(bytes) >> F2FS_BLKSIZE_BITS) #define F2FS_BLK_TO_BYTES(blk) ((unsigned long long)(blk) << F2FS_BLKSIZE_BITS) #define F2FS_BLK_END_BYTES(blk) (F2FS_BLK_TO_BYTES(blk + 1) - 1) |