f2fs: support fiemap for inline_data
There is a FIEMAP_EXTENT_INLINE_DATA, pointed out by Marc.
Reviewed-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
diff --git a/fs/f2fs/inline.c b/fs/f2fs/inline.c
index 3b18e23..bda7126 100644
--- a/fs/f2fs/inline.c
+++ b/fs/f2fs/inline.c
@@ -12,6 +12,7 @@
#include <linux/f2fs_fs.h>
#include "f2fs.h"
+#include "node.h"
bool f2fs_may_inline_data(struct inode *inode)
{
@@ -570,3 +571,38 @@
f2fs_put_page(ipage, 1);
return 0;
}
+
+int f2fs_inline_data_fiemap(struct inode *inode,
+ struct fiemap_extent_info *fieinfo, __u64 start, __u64 len)
+{
+ __u64 byteaddr, ilen;
+ __u32 flags = FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_NOT_ALIGNED |
+ FIEMAP_EXTENT_LAST;
+ struct node_info ni;
+ struct page *ipage;
+ int err = 0;
+
+ ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino);
+ if (IS_ERR(ipage))
+ return PTR_ERR(ipage);
+
+ if (!f2fs_has_inline_data(inode)) {
+ err = -EAGAIN;
+ goto out;
+ }
+
+ ilen = min_t(size_t, MAX_INLINE_DATA, i_size_read(inode));
+ if (start >= ilen)
+ goto out;
+ if (start + len < ilen)
+ ilen = start + len;
+ ilen -= start;
+
+ get_node_info(F2FS_I_SB(inode), inode->i_ino, &ni);
+ byteaddr = (__u64)ni.blk_addr << inode->i_sb->s_blocksize_bits;
+ byteaddr += (char *)inline_data_addr(ipage) - (char *)F2FS_INODE(ipage);
+ err = fiemap_fill_next_extent(fieinfo, start, byteaddr, ilen, flags);
+out:
+ f2fs_put_page(ipage, 1);
+ return err;
+}