| commit | 54e4a0dfa25d9365c4e80a639e80d9213eb6edbe | [log] [tgz] |
|---|---|---|
| author | Trond Myklebust <trond.myklebust@primarydata.com> | Sun Nov 27 15:12:39 2016 -0500 |
| committer | Trond Myklebust <trond.myklebust@primarydata.com> | Thu Dec 01 17:21:38 2016 -0500 |
| tree | 5d1004f5fc0f7e1529e323524eda755e69ec08bd | |
| parent | 9a837856cf612d83e9ede7081972a2fa78de6921 [diff] |
pNFS: Fix a deadlock between read resends and layoutreturn
We must not call nfs_pageio_init_read() on a new nfs_pageio_descriptor
while holding a reference to a layout segment, as that can deadlock
pnfs_update_layout().
Fixes: d67ae825a59d6 ("pnfs/flexfiles: Add the FlexFile Layout Driver")
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Cc: stable@vger.kernel.org # v4.0+