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authorChao Yu <yuchao0@huawei.com>2018-01-11 09:39:57 +0300
committerJaegeuk Kim <jaegeuk@kernel.org>2018-01-19 09:09:11 +0300
commit442a9dbd577e38211d296f35443b5e257bb5a9b3 (patch)
tree2aa9200f2c8997e9a1a12c710b3b535eb94f508e /fs/f2fs/data.c
parentf1b43d4cd5f2563f0f1bb2c84eff94faa4c2853b (diff)
downloadlinux-442a9dbd577e38211d296f35443b5e257bb5a9b3.tar.xz
f2fs: support FIEMAP_FLAG_XATTR
This patch enables ->fiemap to handle FIEMAP_FLAG_XATTR flag for xattr mapping info lookup purpose. It makes f2fs passing generic/425 test in fstest. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/data.c')
-rw-r--r--fs/f2fs/data.c69
1 files changed, 68 insertions, 1 deletions
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 664fe0aa18bb..cde2a3264b4c 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -1140,6 +1140,68 @@ static inline loff_t blk_to_logical(struct inode *inode, sector_t blk)
return (blk << inode->i_blkbits);
}
+static int f2fs_xattr_fiemap(struct inode *inode,
+ struct fiemap_extent_info *fieinfo)
+{
+ struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
+ struct page *page;
+ struct node_info ni;
+ __u64 phys = 0, len;
+ __u32 flags;
+ nid_t xnid = F2FS_I(inode)->i_xattr_nid;
+ int err = 0;
+
+ if (f2fs_has_inline_xattr(inode)) {
+ int offset;
+
+ page = f2fs_grab_cache_page(NODE_MAPPING(sbi),
+ inode->i_ino, false);
+ if (!page)
+ return -ENOMEM;
+
+ get_node_info(sbi, inode->i_ino, &ni);
+
+ phys = (__u64)blk_to_logical(inode, ni.blk_addr);
+ offset = offsetof(struct f2fs_inode, i_addr) +
+ sizeof(__le32) * (DEF_ADDRS_PER_INODE -
+ F2FS_INLINE_XATTR_ADDRS(inode));
+
+ phys += offset;
+ len = inline_xattr_size(inode);
+
+ f2fs_put_page(page, 1);
+
+ flags = FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_NOT_ALIGNED;
+
+ if (!xnid)
+ flags |= FIEMAP_EXTENT_LAST;
+
+ err = fiemap_fill_next_extent(fieinfo, 0, phys, len, flags);
+ if (err || err == 1)
+ return err;
+ }
+
+ if (xnid) {
+ page = f2fs_grab_cache_page(NODE_MAPPING(sbi), xnid, false);
+ if (!page)
+ return -ENOMEM;
+
+ get_node_info(sbi, xnid, &ni);
+
+ phys = (__u64)blk_to_logical(inode, ni.blk_addr);
+ len = inode->i_sb->s_blocksize;
+
+ f2fs_put_page(page, 1);
+
+ flags = FIEMAP_EXTENT_LAST;
+ }
+
+ if (phys)
+ err = fiemap_fill_next_extent(fieinfo, 0, phys, len, flags);
+
+ return (err < 0 ? err : 0);
+}
+
int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
u64 start, u64 len)
{
@@ -1150,12 +1212,17 @@ int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
u32 flags = 0;
int ret = 0;
- ret = fiemap_check_flags(fieinfo, FIEMAP_FLAG_SYNC);
+ ret = fiemap_check_flags(fieinfo, FIEMAP_FLAG_SYNC | FIEMAP_FLAG_XATTR);
if (ret)
return ret;
inode_lock(inode);
+ if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) {
+ ret = f2fs_xattr_fiemap(inode, fieinfo);
+ goto out;
+ }
+
if (f2fs_has_inline_data(inode)) {
ret = f2fs_inline_data_fiemap(inode, fieinfo, start, len);
if (ret != -EAGAIN)