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[PATCH v2 0/8] xfs: log space validation

To: "xfs@xxxxxxxxxxx" <xfs@xxxxxxxxxxx>
Subject: [PATCH v2 0/8] xfs: log space validation
From: Jeff Liu <jeff.liu@xxxxxxxxxx>
Date: Fri, 17 May 2013 13:38:01 +0800
Delivered-to: xfs@xxxxxxxxxxx
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130329 Thunderbird/17.0.5

This is version 2 of fix log space calculation if the log stripe unit is 

I changed the subject in this round since there are many changes belong to the 
space reservation interface adjustment.

Major changes of v2->v1:
- The interface of xfs_trans_reserve() has been changed to:
  xfs_trans_reserve(struct xfs_trans *tp, xfs_trans_res *tres, int blocks, int 

- Introduce a new inline helper m_tresp() to fetch pointer of 
mp->m_reservations structure,
  so that we don't need a big code change if someday we rename m_reservations 
to another

- Introduce xfs_log_rlimit.[c|h] to isolate the maximum transaction log space 
  related routines.  There are two functions can be shared with the user space 
which are:
  void xfs_log_adjust_max_attrsetm_res();
  void xfs_log_get_max_trans_res();

- Calculate the maximum length in bytes that would be required for a local 
attribute value
  as large attributes out of line are not logged according to Dave's advise.

- Don't return if the given log space at mount time is too small, drop a 
message via syslog
  in critical level instead.

xfstests/generic and xfs specified test cases(except a dozens of cases need a 
tap device or
xfsdump) works without panic.

[PATCH 1/8] xfs: Introduce a new structure to hold transaction reservation items
[PATCH 2/8] xfs: Introduce tr_fsyncts to m_reservation
[PATCH 3/8] xfs: Make writeid transaction use tr_writeid
[PATCH 4/8] xfs: Refactor xfs_trans_reserve() interface
[PATCH 5/8] xfs: Get rid of all XFS_XXX_LOG_RES() macros
[PATCH 6/8] xfs: Refactor xfs_ticket_alloc() to extract a new helper
[PATCH 7/8] xfs: Add xfs_log_rlimit.[c|h]
[PATCH 8/8] xfs: Validate log space at mount time

The patches of user space sync up with those kernel space change will be sent 
out later as I
have to go out to deal with a urgent thing right now.



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