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ceph: mount syntax module parameter

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Add read-only module parameters for supported mount syntaxes. Primary
user is the user-space mount helper for catching v2 syntax bugs during
testing by cross verifying if the kernel supports v2 syntax on mount
failure.

Signed-off-by: Venky Shankar <vshankar@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Venky Shankar 2021-11-03 10:30:39 +05:30 committed by Ilya Dryomov
parent e1b9eb5076
commit adbed05ed6
1 changed files with 8 additions and 0 deletions
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8
fs/ceph/super.c
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@ -1461,6 +1461,14 @@ bool disable_send_metrics = false;
module_param_cb(disable_send_metrics, &param_ops_metrics, &disable_send_metrics, 0644);
MODULE_PARM_DESC(disable_send_metrics, "Enable sending perf metrics to ceph cluster (default: on)");
/* for both v1 and v2 syntax */
static bool mount_support = true;
static const struct kernel_param_ops param_ops_mount_syntax = {
.get = param_get_bool,
};
module_param_cb(mount_syntax_v1, &param_ops_mount_syntax, &mount_support, 0444);
module_param_cb(mount_syntax_v2, &param_ops_mount_syntax, &mount_support, 0444);
module_init(init_ceph);
module_exit(exit_ceph);