On Wed, 2012-09-12 at 16:39 -0700, Greg Kroah-Hartman wrote: > From: Greg KH <[email protected]> > > 3.0-stable review patch. If anyone has any objections, please let me know. > > ------------------ > > From: Trond Myklebust <[email protected]> > > commit 47fbf7976e0b7d9dcdd799e2a1baba19064d9631 upstream. > > Ever since commit 0a57cdac3f (NFSv4.1 send layoutreturn to fence > disconnected data server) we've been sending layoutreturn calls > while there is potentially still outstanding I/O to the data > servers. The reason we do this is to avoid races between replayed > writes to the MDS and the original writes to the DS. > > When this happens, the BUG_ON() in nfs4_layoutreturn_done can > be triggered because it assumes that we would never call > layoutreturn without knowing that all I/O to the DS is > finished. The fix is to remove the BUG_ON() now that the > assumptions behind the test are obsolete. > > Reported-by: Boaz Harrosh <[email protected]> > Reported-by: Tigran Mkrtchyan <[email protected]> > Signed-off-by: Trond Myklebust <[email protected]> > Signed-off-by: Greg Kroah-Hartman <[email protected]> [...]
The upstream commit has:
Cc: [email protected] [>=3.5]
and so I ignored it for 3.2. Is it actually needed for the earlier
stable series?
Ben.
--
Ben Hutchings
Experience is what causes a person to make new mistakes instead of old ones.
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