From 5b962f688c2dfaa5da0926f6ed9c325fea53dcce Mon Sep 17 00:00:00 2001
From: Qu Wenruo <quwenruo@cn.fujitsu.com>
Date: Mon, 6 Jan 2014 09:58:28 +0800
Subject: [PATCH] btrfs: Add noenospc_debug mount option.
Add noenospc_debug mount option to disable ENOSPC debug with
remount option.
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Reviewed-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>
---
Documentation/filesystems/btrfs.txt | 3 ++-
fs/btrfs/super.c | 5 +++++
2 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/Documentation/filesystems/btrfs.txt b/Documentation/filesystems/btrfs.txt
index 7254cf5013917..13a7cac804308 100644
--- a/Documentation/filesystems/btrfs.txt
+++ b/Documentation/filesystems/btrfs.txt
@@ -108,8 +108,9 @@ Options with (*) are default options and will not show in the mount options.
performance impact. (The fstrim command is also available to
initiate batch trims from userspace).
+ noenospc_debug(*)
enospc_debug
- Debugging option to be more verbose in some ENOSPC conditions.
+ Disable/enable debugging option to be more verbose in some ENOSPC conditions.
fatal_errors=<action>
Action to take when encountering a fatal error:
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index e15377035dd56..832540645c200 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -324,6 +324,7 @@ enum {
Opt_check_integrity, Opt_check_integrity_including_extent_data,
Opt_check_integrity_print_mask, Opt_fatal_errors, Opt_rescan_uuid_tree,
Opt_commit_interval, Opt_barrier, Opt_nodefrag, Opt_nodiscard,
+ Opt_noenospc_debug,
Opt_err,
};
@@ -356,6 +357,7 @@ static match_table_t tokens = {
{Opt_clear_cache, "clear_cache"},
{Opt_user_subvol_rm_allowed, "user_subvol_rm_allowed"},
{Opt_enospc_debug, "enospc_debug"},
+ {Opt_noenospc_debug, "noenospc_debug"},
{Opt_subvolrootid, "subvolrootid=%d"},
{Opt_defrag, "autodefrag"},
{Opt_nodefrag, "noautodefrag"},
@@ -603,6 +605,9 @@ int btrfs_parse_options(struct btrfs_root *root, char *options)
case Opt_enospc_debug:
btrfs_set_opt(info->mount_opt, ENOSPC_DEBUG);
break;
+ case Opt_noenospc_debug:
+ btrfs_clear_opt(info->mount_opt, ENOSPC_DEBUG);
+ break;
case Opt_defrag:
btrfs_info(root->fs_info, "enabling auto defrag");
btrfs_set_opt(info->mount_opt, AUTO_DEFRAG);
--
2.39.5