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ceph: record truncate size/seq for snap data writeback

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Dirty snapshot data needs to be flushed unconditionally. If they
were created before truncation, writeback should use old truncate
size/seq.

Signed-off-by: Yan, Zheng <zyan@redhat.com>
This commit is contained in:
Yan, Zheng
2016-11-15 16:04:37 +08:00
committed by Ilya Dryomov
parent e9e427f0a1
commit 5f743e4566
3 changed files with 22 additions and 13 deletions
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2
fs/ceph/snap.c
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@@ -593,6 +593,8 @@ int __ceph_finish_cap_snap(struct ceph_inode_info *ci,
capsnap->atime = inode->i_atime;
capsnap->ctime = inode->i_ctime;
capsnap->time_warp_seq = ci->i_time_warp_seq;
capsnap->truncate_size = ci->i_truncate_size;
capsnap->truncate_seq = ci->i_truncate_seq;
if (capsnap->dirty_pages) {
dout("finish_cap_snap %p cap_snap %p snapc %p %llu %s s=%llu "
"still has %d dirty pages\n", inode, capsnap,