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| author | Chao Yu <yuchao0@huawei.com> | 2016-10-11 22:57:04 +0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2016-11-23 12:10:54 -0800 |
| commit | 58736fa60f6ae659ac72da8b1580c308b47e8edd (patch) | |
| tree | 54a9cd2eeb81929dfbb7990c44ff7833ca6a207e /fs/f2fs | |
| parent | 6f2d8ed654bfa391854df4de854953f772a16a9d (diff) | |
| download | lwn-58736fa60f6ae659ac72da8b1580c308b47e8edd.tar.gz lwn-58736fa60f6ae659ac72da8b1580c308b47e8edd.zip | |
f2fs: be aware of extent beyond EOF in fiemap
f2fs can support fallocating blocks beyond file size without changing the
size, but ->fiemap of f2fs was restricted and can't detect these extents
fallocated past EOF, now relieve the restriction.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs')
| -rw-r--r-- | fs/f2fs/data.c | 18 |
1 files changed, 4 insertions, 14 deletions
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 7fb081516f5f..b544e0b2e7e5 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -886,7 +886,6 @@ int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, struct buffer_head map_bh; sector_t start_blk, last_blk; pgoff_t next_pgofs; - loff_t isize; u64 logical = 0, phys = 0, size = 0; u32 flags = 0; int ret = 0; @@ -903,13 +902,6 @@ int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, inode_lock(inode); - isize = i_size_read(inode); - if (start >= isize) - goto out; - - if (start + len > isize) - len = isize - start; - if (logical_to_blk(inode, len) == 0) len = blk_to_logical(inode, 1); @@ -928,13 +920,11 @@ next: /* HOLE */ if (!buffer_mapped(&map_bh)) { start_blk = next_pgofs; - /* Go through holes util pass the EOF */ - if (blk_to_logical(inode, start_blk) < isize) + + if (blk_to_logical(inode, start_blk) < blk_to_logical(inode, + F2FS_I_SB(inode)->max_file_blocks)) goto prep_next; - /* Found a hole beyond isize means no more extents. - * Note that the premise is that filesystems don't - * punch holes beyond isize and keep size unchanged. - */ + flags |= FIEMAP_EXTENT_LAST; } |