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ceph: update i_max_size even if inode version does not change

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handle following sequence of events:
 - client releases a inode with i_max_size > 0. The release message
   is queued. (is not sent to the auth MDS)
 - a 'lookup' request reply from non-auth MDS returns the same inode.
 - client opens the inode in write mode. The version of inode trace
   in 'open' request reply is equal to the cached inode's version.
 - client requests new max size. The MDS ignores the request because
   it does not affect client's write range

Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
Reviewed-by: Sage Weil <sage@inktank.com>
This commit is contained in:
Yan, Zheng 2014-03-08 20:12:23 +08:00 committed by Sage Weil
parent a255060451
commit 8c93cd610c
1 changed files with 8 additions and 8 deletions
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16
fs/ceph/inode.c
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@ -659,14 +659,6 @@ static int fill_inode(struct inode *inode,
le32_to_cpu(info->time_warp_seq),
&ctime, &mtime, &atime);
/* only update max_size on auth cap */
if ((info->cap.flags & CEPH_CAP_FLAG_AUTH) &&
ci->i_max_size != le64_to_cpu(info->max_size)) {
dout("max_size %lld -> %llu\n", ci->i_max_size,
le64_to_cpu(info->max_size));
ci->i_max_size = le64_to_cpu(info->max_size);
}
ci->i_layout = info->layout;
inode->i_blkbits = fls(le32_to_cpu(info->layout.fl_stripe_unit)) - 1;
@ -755,6 +747,14 @@ static int fill_inode(struct inode *inode,
ci->i_max_offset = 2;
}
no_change:
/* only update max_size on auth cap */
if ((info->cap.flags & CEPH_CAP_FLAG_AUTH) &&
ci->i_max_size != le64_to_cpu(info->max_size)) {
dout("max_size %lld -> %llu\n", ci->i_max_size,
le64_to_cpu(info->max_size));
ci->i_max_size = le64_to_cpu(info->max_size);
}
spin_unlock(&ci->i_ceph_lock);
/* queue truncate if we saw i_size decrease */