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| author | Chuck Lever <chuck.lever@oracle.com> | 2022-09-08 18:14:19 -0400 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2022-09-26 14:02:40 -0400 |
| commit | 68c522afd0b1936b48a03a4c8b81261e7597c62d (patch) | |
| tree | f49d4870391ef789900fbc3397e003466df7a5b5 /fs/nfsd | |
| parent | 34b91dda7124fc3259e4b2ae53e0c933dedfec01 (diff) | |
| download | linux-68c522afd0b1936b48a03a4c8b81261e7597c62d.tar.gz | |
NFSD: Make nfsd4_rename() wait before returning NFS4ERR_DELAY
nfsd_rename() can kick off a CB_RECALL (via vfs_rename() -> leases_conflict()) if a delegation is present. Before returning NFS4ERR_DELAY, give the client holding that delegation a chance to return it and then retry the nfsd_rename() again, once. This version of the patch handles renaming an existing file, but does not deal with renaming onto an existing file. That case will still always trigger an NFS4ERR_DELAY. Link: https://bugzilla.linux-nfs.org/show_bug.cgi?id=354 Tested-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Reviewed-by: Jeff Layton <jlayton@kernel.org>
Diffstat (limited to 'fs/nfsd')
| -rw-r--r-- | fs/nfsd/vfs.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c index d4db595d33ea..7d86ed235359 100644 --- a/fs/nfsd/vfs.c +++ b/fs/nfsd/vfs.c @@ -1696,7 +1696,15 @@ retry: .new_dir = tdir, .new_dentry = ndentry, }; - host_err = vfs_rename(&rd); + int retries; + + for (retries = 1;;) { + host_err = vfs_rename(&rd); + if (host_err != -EAGAIN || !retries--) + break; + if (!nfsd_wait_for_delegreturn(rqstp, d_inode(odentry))) + break; + } if (!host_err) { host_err = commit_metadata(tfhp); if (!host_err) |