From: Patrick Donnelly pdonnell@redhat.com

Previously, the "name" in the new device syntax "<name>@<fsid>.<fsname>" was ignored because (presumably) tests were done using mount.ceph which also passed the entity name using "-o name=foo". If mounting is done without the mount.ceph helper, the new device id syntax fails to set the name properly.

Cc: stable@vger.kernel.org Resolves: https://tracker.ceph.com/issues/68516 Signed-off-by: Patrick Donnelly pdonnell@redhat.com --- fs/ceph/super.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/fs/ceph/super.c b/fs/ceph/super.c index 42bdbe5b7ef9..de03cd6eb86e 100644 --- a/fs/ceph/super.c +++ b/fs/ceph/super.c @@ -285,7 +285,9 @@ static int ceph_parse_new_source(const char *dev_name, const char *dev_name_end, size_t len; struct ceph_fsid fsid; struct ceph_parse_opts_ctx *pctx = fc->fs_private; + struct ceph_options *opts = pctx->copts; struct ceph_mount_options *fsopt = pctx->opts; + const char *name_start = dev_name; const char *fsid_start, *fs_name_start;

if (*dev_name_end != '=') { @@ -296,8 +298,14 @@ static int ceph_parse_new_source(const char *dev_name, const char *dev_name_end, fsid_start = strchr(dev_name, '@'); if (!fsid_start) return invalfc(fc, "missing cluster fsid"); - ++fsid_start; /* start of cluster fsid */ + len = fsid_start - name_start; + kfree(opts->name); + opts->name = kstrndup(name_start, len, GFP_KERNEL); + if (!opts->name) + return -ENOMEM; + dout("using %s entity name", opts->name);

+ ++fsid_start; /* start of cluster fsid */ fs_name_start = strchr(fsid_start, '.'); if (!fs_name_start) return invalfc(fc, "missing file system name");