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btrfs: Add noenospc_debug mount option.

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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>
This commit is contained in:
Qu Wenruo 2014-01-06 09:58:28 +08:00 committed by Chris Mason
parent e07a2ade44
commit 5303629343
2 changed files with 7 additions and 1 deletions
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3
Documentation/filesystems/btrfs.txt
View File

@ -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:

5
fs/btrfs/super.c
View File

@ -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);