From: Qu Wenruo Date: Mon, 6 Jan 2014 01:58:28 +0000 (+0800) Subject: btrfs: Add noenospc_debug mount option. X-Git-Tag: accepted/tizen/common/20141203.182822~134^2~212 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=530362934332e4efac81d40583aa1225e64f556f;p=platform%2Fkernel%2Flinux-arm64.git btrfs: Add noenospc_debug mount option. Add noenospc_debug mount option to disable ENOSPC debug with remount option. Signed-off-by: Qu Wenruo Reviewed-by: David Sterba Signed-off-by: Josef Bacik Signed-off-by: Chris Mason --- diff --git a/Documentation/filesystems/btrfs.txt b/Documentation/filesystems/btrfs.txt index 7254cf5..13a7cac 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 to take when encountering a fatal error: diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index e153770..8325406 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);