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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2023-10-03 15:51:49 -0700 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2023-10-03 15:53:40 -0700 |
| commit | 4ed33e69e136e7b295ff69449853beac605e8502 (patch) | |
| tree | c1791ab97a6235fbfd8cc58189ac77da0d913dc6 /fs/f2fs | |
| parent | 3e729e50d01e6a336132d1739866a6463f82faa9 (diff) | |
f2fs: stop iterating f2fs_map_block if hole exists
Let's avoid unnecessary f2fs_map_block calls to load extents.
# f2fs_io fadvise willneed 0 4096 /data/local/tmp/test
f2fs_map_blocks: dev = (254,51), ino = 85845, file offset = 386, start blkaddr = 0x34ac00, len = 0x1400, flags = 2,
f2fs_map_blocks: dev = (254,51), ino = 85845, file offset = 5506, start blkaddr = 0x34c200, len = 0x1000, flags = 2,
f2fs_map_blocks: dev = (254,51), ino = 85845, file offset = 9602, start blkaddr = 0x34d600, len = 0x1200, flags = 2,
f2fs_map_blocks: dev = (254,51), ino = 85845, file offset = 14210, start blkaddr = 0x34ec00, len = 0x400, flags = 2,
f2fs_map_blocks: dev = (254,51), ino = 85845, file offset = 15235, start blkaddr = 0x34f401, len = 0xbff, flags = 2,
f2fs_map_blocks: dev = (254,51), ino = 85845, file offset = 18306, start blkaddr = 0x350200, len = 0x1200, flags = 2
f2fs_map_blocks: dev = (254,51), ino = 85845, file offset = 22915, start blkaddr = 0x351601, len = 0xa7d, flags = 2
f2fs_map_blocks: dev = (254,51), ino = 85845, file offset = 25600, start blkaddr = 0x351601, len = 0x0, flags = 0
f2fs_map_blocks: dev = (254,51), ino = 85845, file offset = 25601, start blkaddr = 0x351601, len = 0x0, flags = 0
f2fs_map_blocks: dev = (254,51), ino = 85845, file offset = 25602, start blkaddr = 0x351601, len = 0x0, flags = 0
...
f2fs_map_blocks: dev = (254,51), ino = 85845, file offset = 1037188, start blkaddr = 0x351601, len = 0x0, flags = 0
f2fs_map_blocks: dev = (254,51), ino = 85845, file offset = 1038206, start blkaddr = 0x351601, len = 0x0, flags = 0
f2fs_map_blocks: dev = (254,51), ino = 85845, file offset = 1039224, start blkaddr = 0x351601, len = 0x0, flags = 0
f2fs_map_blocks: dev = (254,51), ino = 85845, file offset = 2075548, start blkaddr = 0x351601, len = 0x0, flags = 0
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs')
| -rw-r--r-- | fs/f2fs/file.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 161826c6e200..2403fd1de5a0 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -3270,7 +3270,7 @@ int f2fs_precache_extents(struct inode *inode) f2fs_down_write(&fi->i_gc_rwsem[WRITE]); err = f2fs_map_blocks(inode, &map, F2FS_GET_BLOCK_PRECACHE); f2fs_up_write(&fi->i_gc_rwsem[WRITE]); - if (err) + if (err || !map.m_len) return err; map.m_lblk = m_next_extent; |