f2fs allows preallocation beyond isize, but f2fs_fiemap only look up
extents within isize. Therefore add this support.
Note: It's possible that there are holes after isize, for example,
fallocate multiple discontinuous extents after isize with
FALLOC_FL_KEEP_SIZE set. Since I can tell no differences between
EOF and holes from return of get_data_block, I'm afaid this patch
can't support such scenarios.
Signed-off-by: Fan li <fanofcode...@samsung.com>
---
fs/f2fs/data.c | 7 +------
1 file changed, 1 insertion(+), 6 deletions(-)
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index a9a4d89..f89cf07 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -798,12 +798,6 @@ int f2fs_fiemap(struct inode *inode, struct
fiemap_extent_info *fieinfo,
isize = i_size_read(inode);
mutex_lock(&inode->i_mutex);
- 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);
@@ -829,6 +823,7 @@ next:
* punch holes beyond isize and keep size unchanged.
*/
flags |= FIEMAP_EXTENT_LAST;
+ last_blk = start_blk - 1;
}
if (size)
--
1.7.9.5
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