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Commit 67f8cf3c authored by Jaegeuk Kim's avatar Jaegeuk Kim
Browse files

f2fs: support fiemap for inline_data 



There is a FIEMAP_EXTENT_INLINE_DATA, pointed out by Marc.

Reviewed-by: default avatarChao Yu <chao2.yu@samsung.com>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent 1d373a0e

fs/f2fs/data.c

+6 −0
Original line number Diff line number Diff line
@@ -771,6 +771,12 @@ int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, 
	if (ret)

		return ret;



	if (f2fs_has_inline_data(inode)) {

		ret = f2fs_inline_data_fiemap(inode, fieinfo, start, len);

		if (ret != -EAGAIN)

			return ret;

	}



	mutex_lock(&inode->i_mutex);



	if (len >= isize) {

fs/f2fs/f2fs.h

+2 −0
Original line number Diff line number Diff line
@@ -2054,6 +2054,8 @@ void f2fs_delete_inline_entry(struct f2fs_dir_entry *, struct page *, 
bool f2fs_empty_inline_dir(struct inode *);

int f2fs_read_inline_dir(struct file *, struct dir_context *,

						struct f2fs_str *);

int f2fs_inline_data_fiemap(struct inode *,

		struct fiemap_extent_info *, __u64, __u64);



/*

 * shrinker.c

fs/f2fs/inline.c

+36 −0
Original line number Diff line number Diff line
@@ -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 @@ int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx, 
	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;

}