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ceph: re-request max_size if cap auth changes

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If the auth cap migrates to another MDS, clear requested_max_size so that
we resend any pending max_size increase requests.  This fixes potential
hangs on writes that extend a file and race with an cap migration between
MDSs.

Signed-off-by: Sage Weil <sage@newdream.net>
This commit is contained in:
Sage Weil 2010-11-07 09:39:00 -08:00
parent 912a9b0319
commit feb4cc9bb4
1 changed files with 5 additions and 0 deletions
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5
fs/ceph/caps.c
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@ -2689,6 +2689,11 @@ static void handle_cap_import(struct ceph_mds_client *mdsc,
NULL /* no caps context */);
try_flush_caps(inode, session, NULL);
up_read(&mdsc->snap_rwsem);
/* make sure we re-request max_size, if necessary */
spin_lock(&inode->i_lock);
ci->i_requested_max_size = 0;
spin_unlock(&inode->i_lock);
}
/*