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| author |   Trond Myklebust <Trond.Myklebust@netapp.com> | 2013-03-20 12:34:32 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2013-03-21 10:31:19 -0400 |
| commit | a073dbff359f4741013ae4b8395f5364c5e00b48 (patch) | |
| tree | 511029ebb36cce1b4a03e4181da0dfe91cac268e /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | pnfs-block: removing DM device maybe cause oops when call dev_remove (diff) | |
| download | linux-dev-a073dbff359f4741013ae4b8395f5364c5e00b48.tar.xz linux-dev-a073dbff359f4741013ae4b8395f5364c5e00b48.zip | |
NFSv4.1: Fix a race in pNFS layoutcommit
We need to clear the NFS_LSEG_LAYOUTCOMMIT bits atomically with the
NFS_INO_LAYOUTCOMMIT bit, otherwise we may end up with situations
where the two are out of sync.
The first half of the problem is to ensure that pnfs_layoutcommit_inode
clears the NFS_LSEG_LAYOUTCOMMIT bit through pnfs_list_write_lseg.
We still need to keep the reference to those segments until the RPC call
is finished, so in order to make it clear _where_ those references come
from, we add a helper pnfs_list_write_lseg_done() that cleans up after
pnfs_list_write_lseg.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Acked-by: Benny Halevy <bhalevy@tonian.com>
Cc: stable@vger.kernel.org
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions