[RFC PATCH 00/25] Add quota supporting in ubifs
Jan Kara
jack at suse.cz
Tue Jul 21 01:58:34 PDT 2015
Hello,
On Tue 21-07-15 16:37:31, Dongsheng Yang wrote:
> Hi Atem, Richard and others,
> This is a patchset to add quota supporting in ubifs.
> [1/25] - [7/25] are working to make quotactl to support filesystems
> which are running on char device.
>
> Others are about making ubifs to support quota
> Please help to review or test it. Any comment is welcome :).
>
> Hi Jan Kara,
> I am not sure I am using the quota APIs correctly, please
> help to correct me if I am wrong.
Well, the patches for cdev handling are more for Al Viro as a VFS
maintainer. I can give you some feedback but he is the final arbiter to
decide whether those patches get merged. So please CC him in the next
posting.
Honza
>
> Also you can get the code from:
> https://github.com/yangdongsheng/linux.git ubifs_quota_v1
>
> My simple testing is shown as below:
> [root at atest-guest linux_compile]# mount -t ubifs -o usrquota,grpquota /dev/ubi0_0 /mnt/ubifs/
> [root at atest-guest linux_compile]# quotacheck -ug /mnt/ubifs
> [root at atest-guest linux_compile]# quotaon /mnt/ubifs
> [root at atest-guest linux_compile]# repquota /mnt/ubifs
> *** Report for user quotas on device /dev/ubi0_0
> Block grace time: 7days; Inode grace time: 7days
> Block limits File limits
> User used soft hard grace used soft hard grace
> ----------------------------------------------------------------------
> root -- 0 0 0 1 0 0
> [root at atest-guest linux_compile]# setquota root 10 10 3 3 /mnt/ubifs
> [root at atest-guest linux_compile]# repquota /mnt/ubifs
> *** Report for user quotas on device /dev/ubi0_0
> Block grace time: 7days; Inode grace time: 7days
> Block limits File limits
> User used soft hard grace used soft hard grace
> ----------------------------------------------------------------------
> root -- 0 10 10 1 3 3
> [root at atest-guest linux_compile]# touch /mnt/ubifs/{1,11,111}
> ubifs: warning, user file quota exceeded.
> [root at atest-guest linux_compile]# repquota /mnt/ubifs
> *** Report for user quotas on device /dev/ubi0_0
> Block grace time: 7days; Inode grace time: 7days
> Block limits File limits
> User used soft hard grace used soft hard grace
> ----------------------------------------------------------------------
> root -+ 0 10 10 4 3 3 7days
> [root at atest-guest linux_compile]# rm -rf /mnt/ubifs/1*
> [root at atest-guest linux_compile]# repquota /mnt/ubifs
> *** Report for user quotas on device /dev/ubi0_0
> Block grace time: 7days; Inode grace time: 7days
> Block limits File limits
> User used soft hard grace used soft hard grace
> ----------------------------------------------------------------------
> root -- 0 10 10 1 3 3
> [root at atest-guest linux_compile]# dd if=/dev/urandom of=/mnt/ubifs/data bs=1K count=11
> ubifs: warning, user block quota exceeded.
> 11+0 records in
> 11+0 records out
> 11264 bytes (11 kB) copied, 0.216498 s, 52.0 kB/s
> [root at atest-guest linux_compile]# repquota /mnt/ubifs
> *** Report for user quotas on device /dev/ubi0_0
> Block grace time: 7days; Inode grace time: 7days
> Block limits File limits
> User used soft hard grace used soft hard grace
> ----------------------------------------------------------------------
> root +- 11 10 10 7days 2 3 3
> [root at atest-guest linux_compile]# rm -rf /mnt/ubifs/data
> [root at atest-guest linux_compile]# repquota /mnt/ubifs
> *** Report for user quotas on device /dev/ubi0_0
> Block grace time: 7days; Inode grace time: 7days
> Block limits File limits
> User used soft hard grace used soft hard grace
> ----------------------------------------------------------------------
> root -- 0 10 10 1 3 3
>
>
> Dongsheng Yang (25):
> fs: introduce a ->s_cdev field into struct super_block
> ubi: introduce a interface to get cdev in ubi_volume
> ubifs: fill sb->s_cdev in ubifs_fill_super()
> fs: super: introduce the functions to get super by cdev reference
> fs: char_dev: introduce lookup_cdev function to find cdev by name
> fs: dquot: skip invalidate_bdev if bdev is NULL
> fs: quota: make quota support fs which is running on char dev
> ubifs: fix a typo in comment of ubifs_budget_req
> ubifs: extend budget for blocks
> ubifs: fill ->s_dev in ubifs_fill_super
> ubifs: export read_block() from file.c
> ubifs: introduce quota related mount options
> ubifs: introduce a field named as budgeted to ubifs_inode
> ubifs: implement IO functions for quota files
> ubifs: disable quota in ubifs_put_super
> ubifs: write quota back in ubifs_sync
> ubifs: suspend & resume quota properly in ubifs_remount
> ubifs: record quota information about inode in ubifs_new_inode
> ubifs: free quota inode information in ubifs_evict_inode
> ubifs: alloc quota space in ubifs_write_begin
> ubifs: free quota space in do_truncation and unlink
> ubifs: adapt quota space informatin in do_setattr
> ubifs: transfer quota information in changing owner or group
> ubifs: implement ubifs_qctl_operations for quotactl
> ubifs: make ubifs to support quota
>
> drivers/mtd/ubi/kapi.c | 6 +
> fs/char_dev.c | 72 ++++++++++
> fs/quota/dquot.c | 3 +-
> fs/quota/quota.c | 30 +++--
> fs/super.c | 45 +++++++
> fs/ubifs/budget.c | 4 +
> fs/ubifs/debug.c | 2 +
> fs/ubifs/dir.c | 24 +++-
> fs/ubifs/file.c | 56 +++++++-
> fs/ubifs/ioctl.c | 1 +
> fs/ubifs/super.c | 352 +++++++++++++++++++++++++++++++++++++++++++++++-
> fs/ubifs/ubifs.h | 19 ++-
> include/linux/fs.h | 5 +
> include/linux/mtd/ubi.h | 1 +
> 14 files changed, 597 insertions(+), 23 deletions(-)
>
> --
> 1.8.4.2
>
>
--
Jan Kara <jack at suse.cz>
SUSE Labs, CR
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