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net/9p: show error message if user 'msize' cannot be satisfied

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If user supplied a large value with the 'msize' option, then
client would silently limit that 'msize' value to the maximum
value supported by transport. That's a bit confusing for users
of not having any indication why the preferred 'msize' value
could not be satisfied.

Link: https://lkml.kernel.org/r/783ba37c1566dd715b9a67d437efa3b77e3cd1a7.1640870037.git.linux_oss@crudebyte.com
Reported-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Christian Schoenebeck <linux_oss@crudebyte.com>
Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>
This commit is contained in:
Christian Schoenebeck 2021-12-30 14:23:18 +01:00 committed by Dominique Martinet
parent deadd8746e
commit 15e2721b19
1 changed files with 6 additions and 1 deletions
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7
net/9p/client.c
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@ -1038,8 +1038,13 @@ struct p9_client *p9_client_create(const char *dev_name, char *options)
if (err)
goto put_trans;
if (clnt->msize > clnt->trans_mod->maxsize)
if (clnt->msize > clnt->trans_mod->maxsize) {
clnt->msize = clnt->trans_mod->maxsize;
pr_info("Limiting 'msize' to %d as this is the maximum "
"supported by transport %s\n",
clnt->msize, clnt->trans_mod->name
);
}
if (clnt->msize < 4096) {
p9_debug(P9_DEBUG_ERROR,