Re: Re: [PATCH v2] libxfs: fix inode reservation space for removing transaction

["Darrick J. Wong" <djwong@kernel.org>]

On Wed, Aug 17, 2022 at 02:35:39PM +0800, Xiaole He wrote:
> Yes, Darrick, I already see the patch been merged into the kernel
> source 'xfs-linux', thanks, but not see it in the userspace utilities
> source 'xfsprogs-dev', so I resend this patch again for the userspace
> utilities source 'xfsprogs-dev'.
>
> Is this action of resend neccesary? Sorry I do not know what is
> workflow of the 'libxfs' between the kernel source 'xfs-linux' and the
> userspace utilities souce 'xfsprogs-dev', is the patch of 'libxfs'
> will be merged into userspace utilities source 'xfsprogs-dev'
> automatically because it had been merged into the kernel source
> 'xfs-linux'? If so, I'm sorry for bother you and please ignore this
> mail.

Ah, sorry, I missed that.  The xfsprogs maintainer automatically pulls
kernel libxfs changes into xfsprogs before the (xfsprogs) 6.0.0-rc1
release.  It isn't usually necessary to submit a straight port, unless
you've tried porting it to userspace yourself and discovered that there
are other non-trivial changes needed.

--D

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> At 2022-08-16 23:23:41, "Darrick J. Wong" <djwong@kernel.org> wrote:
> >On Mon, Aug 15, 2022 at 10:54:58AM +0800, Xiaole He wrote:
> >> From: hexiaole <hexiaole@kylinos.cn>
> >> 
> >> In 'libxfs/xfs_trans_resv.c', the comment for transaction of removing a
> >> directory entry mentions that there has 2 inode size of space to be
> >> reserverd, but the actual code only count for 1 inode size:
> >
> >Already merged, see 6.0-rc1.
> >
> >--D
> >
> >> 
> >> /* libxfs/xfs_trans_resv.c begin */
> >> /*
> >>  * For removing a directory entry we can modify:
> >>  *    the parent directory inode: inode size
> >>  *    the removed inode: inode size
> >> ...
> >> xfs_calc_remove_reservation(
> >>         struct xfs_mount        *mp)
> >> {
> >>         return XFS_DQUOT_LOGRES(mp) +
> >>                 xfs_calc_iunlink_add_reservation(mp) +
> >>                 max((xfs_calc_inode_res(mp, 1) +
> >> ...
> >> /* libxfs/xfs_trans_resv.c end */
> >> 
> >> Here only count for 1 inode size to be reserved in
> >> 'xfs_calc_inode_res(mp, 1)', rather than 2.
> >> 
> >> Signed-off-by: hexiaole <hexiaole@kylinos.cn>
> >> ---
> >> V1 -> V2: djwong: remove redundant code citations
> >> 
> >>  libxfs/xfs_trans_resv.c | 2 +-
> >>  1 file changed, 1 insertion(+), 1 deletion(-)
> >> 
> >> diff --git a/libxfs/xfs_trans_resv.c b/libxfs/xfs_trans_resv.c
> >> index d4a9f69e..797176d7 100644
> >> --- a/libxfs/xfs_trans_resv.c
> >> +++ b/libxfs/xfs_trans_resv.c
> >> @@ -514,7 +514,7 @@ xfs_calc_remove_reservation(
> >>  {
> >>  	return XFS_DQUOT_LOGRES(mp) +
> >>  		xfs_calc_iunlink_add_reservation(mp) +
> >> -		max((xfs_calc_inode_res(mp, 1) +
> >> +		max((xfs_calc_inode_res(mp, 2) +
> >>  		     xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp),
> >>  				      XFS_FSB_TO_B(mp, 1))),
> >>  		    (xfs_calc_buf_res(4, mp->m_sb.sb_sectsize) +
> >> -- 
> >> 2.27.0
> >>