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Commit 53036293 authored by Qu Wenruo's avatar Qu Wenruo Committed by Chris Mason
Browse files

btrfs: Add noenospc_debug mount option. 



Add noenospc_debug mount option to disable ENOSPC debug with
remount option.

Signed-off-by: default avatarQu Wenruo <quwenruo@cn.fujitsu.com>
Reviewed-by: default avatarDavid Sterba <dsterba@suse.cz>
Signed-off-by: default avatarJosef Bacik <jbacik@fb.com>
Signed-off-by: default avatarChris Mason <clm@fb.com>
parent e07a2ade

Documentation/filesystems/btrfs.txt

+2 −1
Original line number Diff line number Diff line
@@ -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:

fs/btrfs/super.c

+5 −0
Original line number Diff line number Diff line
@@ -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);