kernel.git/fs/ext4/resize.c, branch linux-2.6.28.y

ext4: Initialize the new group descriptor when resizing the filesystem

2009-02-20T22:40:29Z

(cherry picked from commit fdff73f094e7220602cc3f8959c7230517976412) Make sure all of the fields of the group descriptor are properly initialized. Previously, we allowed bg_flags field to be contain random garbage, which could trigger non-deterministic behavior, including a kernel OOPS. http://bugzilla.kernel.org/show_bug.cgi?id=12433 Signed-off-by: "Theodore Ts'o" Signed-off-by: Greg Kroah-Hartman

ext4: mark the blocks/inode bitmap beyond end of group as used

2009-02-20T22:40:27Z

(cherry picked from commit 648f5879f5892dddd3ba71cd0d285599f40f2512) We need to mark the block/inode bitmap beyond the end of the group with '1'. Signed-off-by: Aneesh Kumar K.V Signed-off-by: "Theodore Ts'o" Signed-off-by: Greg Kroah-Hartman

ext4: Use EXT4_GROUP_INFO_NEED_INIT_BIT during resize

2009-02-20T22:40:25Z

(cherry picked from commit 920313a726e04fef0f2c0bcb04ad8229c0e700d8) The new groups added during resize are flagged as need_init group. Make sure we properly initialize these groups. When we have block size < page size and we are adding new groups the page may still be marked uptodate even though we haven't initialized the group. While forcing the init of buddy cache we need to make sure other groups part of the same page of buddy cache is not using the cache. group_info->alloc_sem is added to ensure the same. Signed-off-by: Aneesh Kumar K.V Signed-off-by: "Theodore Ts'o" Signed-off-by: Greg Kroah-Hartman

ext4: Add blocks added during resize to bitmap

2009-02-20T22:40:25Z

(cherry picked from commit e21675d4b63975d09eb75c443c48ebe663d23e18) With this change new blocks added during resize are marked as free in the block bitmap and the group is flagged with EXT4_GROUP_INFO_NEED_INIT_BIT flag. This makes sure when mballoc tries to allocate blocks from the new group we would reload the buddy information using the bitmap present in the disk. Signed-off-by: Aneesh Kumar K.V Signed-off-by: "Theodore Ts'o" Signed-off-by: Greg Kroah-Hartman

ext4: Remove old legacy block allocator

2008-10-10T13:40:52Z

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

Update flex_bg free blocks and free inodes counters when resizing.

2008-09-08T14:20:24Z

This fixes a bug which prevented the newly created inodes after a resize from being used on filesystems with flex_bg. Signed-off-by: Frederic Bohe Signed-off-by: "Theodore Ts'o"

ext4: Fix whitespace checkpatch warnings/errors

2008-09-09T02:25:24Z

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

ext4: don't try to resize if there are no reserved gdt blocks left

2008-08-20T02:13:41Z

When trying to resize an ext4 fs and you run out of reserved gdt blocks, you get an error that doesn't actually tell you what went wrong, it just says that the gdb it picked is not correct, which is the case since you don't have any reserved gdt blocks left. This patch adds a check to make sure you have reserved gdt blocks to use, and if not prints out a more relevant error. Signed-off-by: Josef Bacik Cc: Cc: Andreas Dilger Signed-off-by: Andrew Morton Signed-off-by: "Theodore Ts'o"

ext4: Cleanup whitespace and other miscellaneous style issues

2008-07-26T20:15:44Z

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

ext4: fix online resize with mballoc

2008-07-11T23:27:31Z

Update group infos when updating a group's descriptor. Add group infos when adding a group's descriptor. Refresh cache pages used by mb_alloc when changes occur. This will probably need modifications when META_BG resizing will be allowed. Signed-off-by: Frederic Bohe Signed-off-by: Mingming Cao