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NFSD: Mark filecache "down" if init fails

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NeilBrown says:
> The handling of NFSD_FILE_CACHE_UP is strange.  nfsd_file_cache_init()
> sets it, but doesn't clear it on failure.  So if nfsd_file_cache_init()
> fails for some reason, nfsd_file_cache_shutdown() would still try to
> clean up if it was called.

Reported-by: NeilBrown <neilb@suse.de>
Fixes: c7b824c3d0 ("NFSD: Replace the "init once" mechanism")
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever 2024-09-21 14:25:37 -04:00
parent 509abfc7a0
commit dc0d0f885a
1 changed files with 3 additions and 1 deletions
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4
fs/nfsd/filecache.c
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@ -723,7 +723,7 @@ nfsd_file_cache_init(void)
ret = rhltable_init(&nfsd_file_rhltable, &nfsd_file_rhash_params);
if (ret)
return ret;
goto out;
ret = -ENOMEM;
nfsd_file_slab = KMEM_CACHE(nfsd_file, 0);
@ -775,6 +775,8 @@ nfsd_file_cache_init(void)
INIT_DELAYED_WORK(&nfsd_filecache_laundrette, nfsd_file_gc_worker);
out:
if (ret)
clear_bit(NFSD_FILE_CACHE_UP, &nfsd_file_flags);
return ret;
out_notifier:
lease_unregister_notifier(&nfsd_file_lease_notifier);