From c2faff790ccd11ea5be8e3ca99713f116fcd6030 Mon Sep 17 00:00:00 2001 From: "Misono, Tomohiro" Date: Wed, 30 Aug 2017 16:33:16 +0900 Subject: btrfs: remove BTRFS_FS_QUOTA_DISABLING flag Currently, "btrfs quota enable" would fail after "btrfs quota disable" on the first time with syslog output "qgroup_rescan_init failed with -22", but it would succeed on the second time. When "quota disable" is called, BTRFS_FS_QUOTA_DISABLING flag bit will be set in fs_info->flags in btrfs_quota_disable(), but it will not be droppd in btrfs_run_qgroups() (which is called in btrfs_commit_transaction()) because quota_root has already been freed. If "quota enable" is called after that, both BTRFS_FS_QUOTA_DISABLING and BTRFS_FS_QUOTA_ENABLED flag would be dropped in the btrfs_run_qgroups() since quota_root is not NULL. This leads to the failure of "quota enable" on the first time. BTRFS_FS_QUOTA_DISABLING flag is not used outside of "quota disable" context and is equivalent to whether quota_root is NULL or not. btrfs_run_qgroups() checks whether quota_root is NULL or not in the first place. So, let's remove BTRFS_FS_QUOTA_DISABLING flag. Signed-off-by: Tomohiro Misono Reviewed-by: David Sterba Signed-off-by: David Sterba --- fs/btrfs/ctree.h | 1 - 1 file changed, 1 deletion(-) (limited to 'fs/btrfs/ctree.h') diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 2add002662f4..b7ccfcc01732 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -708,7 +708,6 @@ struct btrfs_delayed_root; #define BTRFS_FS_OPEN 5 #define BTRFS_FS_QUOTA_ENABLED 6 #define BTRFS_FS_QUOTA_ENABLING 7 -#define BTRFS_FS_QUOTA_DISABLING 8 #define BTRFS_FS_UPDATE_UUID_TREE_GEN 9 #define BTRFS_FS_CREATING_FREE_SPACE_TREE 10 #define BTRFS_FS_BTREE_ERR 11 -- cgit v1.2.1 From 69ad59767d094752c23c0fc180a79532fde073d0 Mon Sep 17 00:00:00 2001 From: Tsutomu Itoh Date: Wed, 4 Oct 2017 11:05:17 +0900 Subject: Btrfs: fix overlap of fs_info::flags values Because the values of BTRFS_FS_EXCL_OP and BTRFS_FS_QUOTA_OVERRIDE overlap, we should change the value. First, BTRFS_FS_EXCL_OP was set to 14. commit 171938e52807 ("btrfs: track exclusive filesystem operation in flags") Next, the value of BTRFS_FS_QUOTA_OVERRIDE was set to 14. commit f29efe292198 ("btrfs: add quota override flag to enable quota override for CAP_SYS_RESOURCE") As a result, the value 14 overlapped, by accident. This problem is solved by defining the value of BTRFS_FS_EXCL_OP as 16, the flags are internal. Fixes: f29efe292198 ("btrfs: add quota override flag to enable quota override for CAP_SYS_RESOURCE") CC: stable@vger.kernel.org # 4.13+ Signed-off-by: Tsutomu Itoh Reviewed-by: David Sterba [ minimize the change, update only BTRFS_FS_EXCL_OP ] Signed-off-by: David Sterba --- fs/btrfs/ctree.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/btrfs/ctree.h') diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index b7ccfcc01732..aff3248beb90 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -721,7 +721,7 @@ struct btrfs_delayed_root; * Indicate that a whole-filesystem exclusive operation is running * (device replace, resize, device add/delete, balance) */ -#define BTRFS_FS_EXCL_OP 14 +#define BTRFS_FS_EXCL_OP 16 struct btrfs_fs_info { u8 fsid[BTRFS_FSID_SIZE]; -- cgit v1.2.1