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authorChao Yu <yuchao0@huawei.com>2017-07-18 19:19:06 +0300
committerJaegeuk Kim <jaegeuk@kernel.org>2017-08-01 02:48:30 +0300
commit7a2af766af15887754f7f7a0869b4603b390876a (patch)
treede8a83f7499d1b278b1e8e5423fbdabc73daea12 /fs/f2fs/recovery.c
parentf247037120ecd3dcbbc196b51ded8b57edf4904f (diff)
downloadlinux-7a2af766af15887754f7f7a0869b4603b390876a.tar.xz
f2fs: enhance on-disk inode structure scalability
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 <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/recovery.c')
-rw-r--r--fs/f2fs/recovery.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/fs/f2fs/recovery.c b/fs/f2fs/recovery.c
index 907d6b7dde6a..2d9b8182691f 100644
--- a/fs/f2fs/recovery.c
+++ b/fs/f2fs/recovery.c
@@ -361,7 +361,8 @@ out:
return 0;
truncate_out:
- if (datablock_addr(tdn.node_page, tdn.ofs_in_node) == blkaddr)
+ if (datablock_addr(tdn.inode, tdn.node_page,
+ tdn.ofs_in_node) == blkaddr)
truncate_data_blocks_range(&tdn, 1);
if (dn->inode->i_ino == nid && !dn->inode_page_locked)
unlock_page(dn->inode_page);
@@ -414,8 +415,8 @@ retry_dn:
for (; start < end; start++, dn.ofs_in_node++) {
block_t src, dest;
- src = datablock_addr(dn.node_page, dn.ofs_in_node);
- dest = datablock_addr(page, dn.ofs_in_node);
+ src = datablock_addr(dn.inode, dn.node_page, dn.ofs_in_node);
+ dest = datablock_addr(dn.inode, page, dn.ofs_in_node);
/* skip recovering if dest is the same as src */
if (src == dest)