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| author |   Trond Myklebust <trond.myklebust@hammerspace.com> | 2021-06-17 19:26:52 -0400 |
|---|---|---|
| committer |   J. Bruce Fields <bfields@redhat.com> | 2021-07-06 20:14:44 -0400 |
| commit | 474bc334698df98ce07c890f1898c7e7f389b0c7 (patch) | |
| tree | cc20b6c784eb464070790b61ed86c7c278510275 /lib/test_overflow.c | |
| parent | lockd: Update the NLMv4 SHARE results encoder to use struct xdr_stream (diff) | |
| download | wireguard-linux-474bc334698df98ce07c890f1898c7e7f389b0c7.tar.xz wireguard-linux-474bc334698df98ce07c890f1898c7e7f389b0c7.zip | |
nfsd: Reduce contention for the nfsd_file nf_rwsem
When flushing out the unstable file writes as part of a COMMIT call, try
to perform most of of the data writes and waits outside the semaphore.
This means that if the client is sending the COMMIT as part of a memory
reclaim operation, then it can continue performing I/O, with contention
for the lock occurring only once the data sync is finished.
Fixes: 5011af4c698a ("nfsd: Fix stable writes")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Tested-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'lib/test_overflow.c')
0 files changed, 0 insertions, 0 deletions