From: Theodore Ts'o <tytso@mit.edu>
To: Ext4 Developers List <linux-ext4@vger.kernel.org>
Cc: xiaoqiangnk@gmail.com, Theodore Ts'o <tytso@mit.edu>
Subject: [PATCH 0/5] meta_bg online resize patches
Date: Sun, 2 Sep 2012 00:51:20 -0400 [thread overview]
Message-ID: <1346561485-6413-1-git-send-email-tytso@mit.edu> (raw)
This patch series is based on a set of patches from Yongqiang Yang, with
some bug fixes. In particular, we have to grow certain arrays which are
allocated at mount time. Originally, they were allocated to be big
enough to cover the largest possible size they could be given the number
of reserved gdt blocks. This wasted memory and doesn't work in the
meta_bg scheme, since there is no limit imposed at mkfs time.
Theodore Ts'o (2):
ext4: grow the s_flex_groups array as needed when resizing
ext4: grow the s_group_info array as needed
Yongqiang Yang (3):
ext4: when resizing, do not copy gdt blocks for groups that do not
have them
ext4: avoid duplicate writes of the backup bg descriptor blocks
ext4: add online resizing support for meta_bg and bit64
fs/ext4/ext4.h | 6 ++
fs/ext4/ioctl.c | 15 ----
fs/ext4/mballoc.c | 79 +++++++++--------
fs/ext4/resize.c | 249 ++++++++++++++++++++++++++++++++++++++++--------------
fs/ext4/super.c | 48 ++++++++---
5 files changed, 267 insertions(+), 130 deletions(-)
--
1.7.12.rc0.22.gcdd159b
next reply other threads:[~2012-09-02 7:36 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-02 4:51 Theodore Ts'o [this message]
2012-09-02 4:51 ` [PATCH 1/5] ext4: when resizing, do not copy gdt blocks for groups that do not have them Theodore Ts'o
2012-09-02 4:51 ` [PATCH 2/5] ext4: avoid duplicate writes of the backup bg descriptor blocks Theodore Ts'o
2012-09-02 4:51 ` [PATCH 3/5] ext4: grow the s_flex_groups array as needed when resizing Theodore Ts'o
2012-09-02 4:51 ` [PATCH 4/5] ext4: grow the s_group_info array as needed Theodore Ts'o
2012-09-02 4:51 ` [PATCH 5/5] ext4: add online resizing support for meta_bg and bit64 Theodore Ts'o
2012-09-03 16:33 ` [PATCH 5/5 -v2] ext4: add online resizing support for meta_bg and 64-bit file systems Theodore Ts'o
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