linux-stable.git/fs/ext4/resize.c, branch linux-3.3.y

ext4: let ext4_group_add() use common code

2012-01-04T22:09:50+00:00

This patch lets ext4_group_add() call ext4_flex_group_add().

Signed-off-by: Yongqiang Yang 
Signed-off-by: "Theodore Ts'o"

ext4: let ext4_group_extend() use common code

2012-01-04T22:09:48+00:00

ext4_group_extend_no_check() is moved out from ext4_group_extend(),
this patch lets ext4_group_extend() call ext4_group_extentd_no_check()
instead.

Signed-off-by: Yongqiang Yang 
Signed-off-by: "Theodore Ts'o"

ext4: add new online resize interface

2012-01-04T22:09:44+00:00

This patch adds new online resize interface, whose input argument is a
64-bit integer indicating how many blocks there are in the resized fs.

In new resize impelmentation, all work like allocating group tables
are done by kernel side, so the new resize interface can support
flex_bg feature and prepares ground for suppoting resize with features
like bigalloc and exclude bitmap. Besides these, user-space tools just
passes in the new number of blocks.

We delay initializing the bitmaps and inode tables of added groups if
possible and add multi groups (a flex groups) each time, so new resize
is very fast like mkfs.

Signed-off-by: Yongqiang Yang 
Signed-off-by: "Theodore Ts'o"

ext4: add a new function which adds a flex group to a fs

2012-01-04T04:44:38+00:00

This patch adds a new function named ext4_flex_group_add() which adds a
flex group to a fs.  The function is used by 64bit-resize interface.

Signed-off-by: Yongqiang Yang 
Signed-off-by: "Theodore Ts'o"

ext4: add a new function which allocates bitmaps and inode tables

2012-01-04T04:44:38+00:00

This patch adds a new function named ext4_allocates_group_table()
which allocates block bitmaps, inode bitmaps and inode tables for a
flex groups and is used by resize code.

Signed-off-by: Yongqiang Yang 
Signed-off-by: "Theodore Ts'o"

ext4: pass verify_reserved_gdb() the number of group decriptors

2012-01-04T04:43:39+00:00

The 64bit resizer adds a flex group each time, so verify_reserved_gdb
can not use s_groups_count directly, it should use the number of group
decriptors before the added group.

Signed-off-by: Yongqiang Yang 
Signed-off-by: "Theodore Ts'o"

ext4: add a function which updates the super block during online resizing

2012-01-04T04:41:39+00:00

This patch adds a function named ext4_update_super() which updates
super block so the newly created block groups are visible to the file
system.  This code is copied from ext4_group_add().

The function will be used by new resize implementation.

Signed-off-by: Yongqiang Yang 
Signed-off-by: "Theodore Ts'o"

ext4: add a function which sets up a block group descriptors of a flex bg

2012-01-04T04:37:31+00:00

This patch adds a function named ext4_setup_new_descs which sets up the
block group descriptors of a flex bg.

Signed-off-by: Yongqiang Yang 
Signed-off-by: "Theodore Ts'o"

ext4: add a function which sets up group blocks of a flex bg

2012-01-04T04:32:52+00:00

This patch adds a function named setup_new_flex_group_blocks() which
sets up group blocks of a flex bg.

Signed-off-by: Yongqiang Yang 
Signed-off-by: "Theodore Ts'o"

ext4: add a structure which will be used by 64bit-resize interface

2012-01-04T04:22:50+00:00

This patch adds a structure which will be used by 64bit-resize interface.
Two functions which allocate and destroy the structure respectively are
added.

Signed-off-by: Yongqiang Yang 
Signed-off-by: "Theodore Ts'o"