diff options
| author |  Trond Myklebust <trondmy@gmail.com>
| 2020-03-01 18:21:42 -0500 |
|---|---|---|
| committer |  Chuck Lever <chuck.lever@oracle.com>
| 2020-03-16 12:04:33 -0400 |
| commit | 65286b883c6de6b30928c837c47c167e82bde0b2 (patch) | |
| tree | d40b431adb770b253c21305c9680ed3456b22ffe /fs/nfsd/export.c | |
| parent | nfsd: Add tracepoints for update of the expkey and export cache entries (diff) | |
| download | linux-65286b883c6de6b30928c837c47c167e82bde0b2.tar.gz linux-65286b883c6de6b30928c837c47c167e82bde0b2.tar.bz2 linux-65286b883c6de6b30928c837c47c167e82bde0b2.zip | |
nfsd: export upcalls must not return ESTALE when mountd is down
If the rpc.mountd daemon goes down, then that should not cause all
exports to start failing with ESTALE errors. Let's explicitly
distinguish between the cache upcall cases that need to time out,
and those that do not.
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'fs/nfsd/export.c')
| -rw-r--r-- | fs/nfsd/export.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/fs/nfsd/export.c b/fs/nfsd/export.c index 6e6cbeb7ac2b..cb777fe82988 100644 --- a/fs/nfsd/export.c +++ b/fs/nfsd/export.c @@ -51,6 +51,11 @@ static void expkey_put(struct kref *ref) kfree_rcu(key, ek_rcu); } +static int expkey_upcall(struct cache_detail *cd, struct cache_head *h) +{ + return sunrpc_cache_pipe_upcall(cd, h); +} + static void expkey_request(struct cache_detail *cd, struct cache_head *h, char **bpp, int *blen) @@ -254,6 +259,7 @@ static const struct cache_detail svc_expkey_cache_template = { .hash_size = EXPKEY_HASHMAX, .name = "nfsd.fh", .cache_put = expkey_put, + .cache_upcall = expkey_upcall, .cache_request = expkey_request, .cache_parse = expkey_parse, .cache_show = expkey_show, @@ -335,6 +341,11 @@ static void svc_export_put(struct kref *ref) kfree_rcu(exp, ex_rcu); } +static int svc_export_upcall(struct cache_detail *cd, struct cache_head *h) +{ + return sunrpc_cache_pipe_upcall(cd, h); +} + static void svc_export_request(struct cache_detail *cd, struct cache_head *h, char **bpp, int *blen) @@ -774,6 +785,7 @@ static const struct cache_detail svc_export_cache_template = { .hash_size = EXPORT_HASHMAX, .name = "nfsd.export", .cache_put = svc_export_put, + .cache_upcall = svc_export_upcall, .cache_request = svc_export_request, .cache_parse = svc_export_parse, .cache_show = svc_export_show, |