git: 331883a2f2e9 - main - nfscl: Check for a forced dismount in nfscl_getref()
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Date: Wed, 03 Nov 2021 00:31:26 UTC
The branch main has been updated by rmacklem: URL: https://cgit.FreeBSD.org/src/commit/?id=331883a2f2e9ae5567085e4cd3a7ae3db2a2b022 commit 331883a2f2e9ae5567085e4cd3a7ae3db2a2b022 Author: Rick Macklem <rmacklem@FreeBSD.org> AuthorDate: 2021-11-03 00:28:13 +0000 Commit: Rick Macklem <rmacklem@FreeBSD.org> CommitDate: 2021-11-03 00:28:13 +0000 nfscl: Check for a forced dismount in nfscl_getref() The nfscl_getref() function is called within nfscl_doiods() when the NFSv4.1/4.2 pNFS client is doing I/O on a DS. As such, nfscl_getref() needs to check for a forced dismount. This patch adds that check. Found during a recent IETF NFSv4 working group testing event. MFC after: 2 weeks --- sys/fs/nfsclient/nfs_clstate.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/sys/fs/nfsclient/nfs_clstate.c b/sys/fs/nfsclient/nfs_clstate.c index 523cc59039af..22c0da1bcef8 100644 --- a/sys/fs/nfsclient/nfs_clstate.c +++ b/sys/fs/nfsclient/nfs_clstate.c @@ -4907,6 +4907,7 @@ int nfscl_getref(struct nfsmount *nmp) { struct nfsclclient *clp; + int ret; NFSLOCKCLSTATE(); clp = nfscl_findcl(nmp); @@ -4914,9 +4915,12 @@ nfscl_getref(struct nfsmount *nmp) NFSUNLOCKCLSTATE(); return (0); } - nfsv4_getref(&clp->nfsc_lock, NULL, NFSCLSTATEMUTEXPTR, NULL); + nfsv4_getref(&clp->nfsc_lock, NULL, NFSCLSTATEMUTEXPTR, nmp->nm_mountp); + ret = 1; + if (NFSCL_FORCEDISM(nmp->nm_mountp)) + ret = 0; NFSUNLOCKCLSTATE(); - return (1); + return (ret); } /*