linux/fs/ext4/inline.c, branch v3.8

ext4: zero out inline data using memset() instead of empty_zero_page

2012-12-11T08:31:49Z

Not all architectures (in particular, sparc64) have empty_zero_page. So instead of copying from empty_zero_page, use memset to clear the inline data by signalling to ext4_xattr_set_entry() via a magic pointer value, EXT4_ZERO_ATTR_VALUE, which is defined by casting -1 to a pointer. This fixes a build failure on sparc64, and the memset() should be more efficient than using memcpy() anyway. Signed-off-by: Tao Ma Signed-off-by: "Theodore Ts'o"

ext4: let fallocate handle inline data correctly

2012-12-10T19:06:03Z

If we are punching hole in a file, we will return ENOTSUPP. As for the fallocation of some extents, we will convert the inline data to a normal extent based file first. Signed-off-by: Tao Ma Signed-off-by: "Theodore Ts'o"

ext4: let ext4_truncate handle inline data correctly

2012-12-10T19:06:02Z

Signed-off-by: Robin Dong Signed-off-by: Tao Ma Signed-off-by: "Theodore Ts'o"

ext4: evict inline data out if we need to strore xattr in inode

2012-12-10T19:06:02Z

Now we that store data in the inode, in case we need to store some xattrs and inode doesn't have enough space, Andreas suggested that we should keep the xattr(metadata) in and data should be pushed out. So this patch does the work. Signed-off-by: Tao Ma Signed-off-by: "Theodore Ts'o"

ext4: let fiemap work with inline data

2012-12-10T19:06:02Z

fiemap is used to find the disk layout of a file, as for inline data, let us just pretend like a file with just one extent. Signed-off-by: Tao Ma Signed-off-by: "Theodore Ts'o"

ext4: let ext4_rename handle inline dir

2012-12-10T19:06:01Z

In case we rename a directory, ext4_rename has to read the dir block and change its dotdot's information. The old ext4_rename encapsulated the dir_block read into itself. So this patch adds a new function ext4_get_first_dir_block() which gets the dir buffer information so the ext4_rename can handle it properly. As it will also change the parent inode number, we return the parent_de so that ext4_rename() can handle it more easily. ext4_find_entry is also changed so that the caller(rename) can tell whether the found entry is an inlined one or not and journaling the corresponding buffer head. Signed-off-by: Tao Ma Signed-off-by: "Theodore Ts'o"

ext4: let empty_dir handle inline dir

2012-12-10T19:06:01Z

empty_dir is used when deleting a dir. So it should handle inline dir properly. Signed-off-by: Tao Ma Signed-off-by: "Theodore Ts'o"

ext4: let ext4_delete_entry() handle inline data

2012-12-10T19:06:00Z

Signed-off-by: Tao Ma Signed-off-by: "Theodore Ts'o"

ext4: let ext4_find_entry handle inline data

2012-12-10T19:06:00Z

Create a new function ext4_find_inline_entry() to handle the case of inline data. Signed-off-by: Tao Ma Signed-off-by: "Theodore Ts'o"

ext4: let ext4_readdir handle inline data

2012-12-10T19:05:59Z

For "." and "..", we just call filldir by ourselves instead of iterating the real dir entry. Signed-off-by: Tao Ma Signed-off-by: "Theodore Ts'o"