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NFSD: Define a proc_layoutcommit for the FlexFiles layout type

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Avoid a crash if a pNFS client should happen to send a LAYOUTCOMMIT
operation on a FlexFiles layout.

Reported-by: Robert Morris <rtm@csail.mit.edu>
Closes: https://lore.kernel.org/linux-nfs/152f99b2-ba35-4dec-93a9-4690e625dccd@oracle.com/T/#t
Cc: Thomas Haynes <loghyr@hammerspace.com>
Cc: stable@vger.kernel.org
Fixes: 9b9960a0ca ("nfsd: Add a super simple flex file server")
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever
2025-09-11 11:12:06 -04:00
parent 73cc6ec1a8
commit 4b47a8601b
1 changed files with 8 additions and 0 deletions
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8
fs/nfsd/flexfilelayout.c
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@@ -125,6 +125,13 @@ nfsd4_ff_proc_getdeviceinfo(struct super_block *sb, struct svc_rqst *rqstp,
return 0;
}
static __be32
nfsd4_ff_proc_layoutcommit(struct inode *inode, struct svc_rqst *rqstp,
struct nfsd4_layoutcommit *lcp)
{
return nfs_ok;
}
const struct nfsd4_layout_ops ff_layout_ops = {
.notify_types =
NOTIFY_DEVICEID4_DELETE | NOTIFY_DEVICEID4_CHANGE,
@@ -133,4 +140,5 @@ const struct nfsd4_layout_ops ff_layout_ops = {
.encode_getdeviceinfo = nfsd4_ff_encode_getdeviceinfo,
.proc_layoutget = nfsd4_ff_proc_layoutget,
.encode_layoutget = nfsd4_ff_encode_layoutget,
.proc_layoutcommit = nfsd4_ff_proc_layoutcommit,
};