linux.git/fs/f2fs/node.c, branch v4.14

f2fs: don't check inode's checksum if it was dirtied or writebacked

2017-09-05T17:50:11+00:00

If another thread already made the page dirtied or writebacked, we must avoid
to verify checksum. If we got an error, we need to remove its uptodate as well.

Reviewed-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: don't need to update inode checksum for recovery

2017-09-05T17:49:37+00:00

This patch fixes "f2fs: support inode checksum".
The recovered inode page will be rewritten with valid checksum.

Reviewed-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: return error when accessing insane flie offset

2017-08-29T17:02:58+00:00

If file offset is insane, we have to return error instead of kernel panic.

Reported-by: Eric Zhang 
Signed-off-by: Jaegeuk Kim

f2fs: add app/fs io stat

2017-08-10T04:43:58+00:00

This patch enables inner app/fs io stats and introduces below virtual fs
nodes for exposing stats info:
/sys/fs/f2fs//iostat_enable
/proc/fs/f2fs//iostat_info

Signed-off-by: Chao Yu 
[Jaegeuk Kim: fix wrong stat assignment]
Signed-off-by: Jaegeuk Kim

f2fs: support inode checksum

2017-08-04T02:09:26+00:00

This patch adds to support inode checksum in f2fs.

Signed-off-by: Chao Yu 
[Jaegeuk Kim: fix verification flow]
Signed-off-by: Jaegeuk Kim

f2fs: provide f2fs_balance_fs to __write_node_page

2017-08-04T02:05:04+00:00

Let node writeback also do f2fs_balance_fs to ensure there are always enough free
segments.

Signed-off-by: Yunlong Song 
Signed-off-by: Jaegeuk Kim

f2fs: support project quota

2017-07-31T23:48:32+00:00

This patch adds to support plain project quota.

Signed-off-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: enhance on-disk inode structure scalability

2017-07-31T23:48:30+00:00

This patch add new flag F2FS_EXTRA_ATTR storing in inode.i_inline
to indicate that on-disk structure of current inode is extended.

In order to extend, we changed the inode structure a bit:

Original one:

struct f2fs_inode {
	...
	struct f2fs_extent i_ext;
	__le32 i_addr[DEF_ADDRS_PER_INODE];
	__le32 i_nid[DEF_NIDS_PER_INODE];
}

Extended one:

struct f2fs_inode {
        ...
        struct f2fs_extent i_ext;
	union {
		struct {
			__le16 i_extra_isize;
			__le16 i_padding;
			__le32 i_extra_end[0];
		};
		__le32 i_addr[DEF_ADDRS_PER_INODE];
	};
        __le32 i_nid[DEF_NIDS_PER_INODE];
}

Once F2FS_EXTRA_ATTR is set, we will steal four bytes in the head of
i_addr field for storing i_extra_isize and i_padding. with i_extra_isize,
we can calculate actual size of reserved space in i_addr, available
attribute fields included in total extra attribute fields for current
inode can be described as below:

  +--------------------+
  | .i_mode            |
  | ...                |
  | .i_ext             |
  +--------------------+
  | .i_extra_isize     |-----+
  | .i_padding         |     |
  | .i_prjid           |     |
  | .i_atime_extra     |     |
  | .i_ctime_extra     |     |
  | .i_mtime_extra     |<----+
  | .i_inode_cs        |<----- store blkaddr/inline from here
  | .i_xattr_cs        |
  | ...                |
  +--------------------+
  |                    |
  |    block address   |
  |                    |
  +--------------------+
  | .i_nid             |
  +--------------------+
  |   node_footer      |
  | (nid, ino, offset) |
  +--------------------+

Hence, with this patch, we would enhance scalability of f2fs inode for
storing more newly added attribute.

Signed-off-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: alloc new nids for xattr block in recovery

2017-07-27T02:34:30+00:00

recovery file A:			recovery file B:
	-get_dnode_of_data
		-alloc_nid
					-recover_xattr_data
						-set_node_addr(sbi, &ni, NEW_ADDR, false);
							--->bug_on for nid has been used by file A

In recovery process, new allocated node blocks may "reuse" xattr block
nids, this patch alloc new nids for xattr blocks in recovery process to
avoid this problem.

Signed-off-by: Yunlei He 
Reviewed-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: remove unused input parameter

2017-07-27T02:34:30+00:00

This patch remove unused input parameter in function
new_node_page.

Signed-off-by: Yunlei He 
Signed-off-by: Yong Sheng 
Reviewed-by: Chao Yu 
Signed-off-by: Jaegeuk Kim