xfs: remove deprecated sysctl knobs

These sysctl knobs were scheduled for removal in September 2025.  That
time has come, so remove them.

Signed-off-by: "Darrick J. Wong" <djwong@kernel.org>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>

Documentation/admin-guide/xfs.rst

@@ -289,9 +289,6 @@ The following sysctls are available for the XFS filesystem:
 	removes unused preallocation from clean inodes and releases
 	the unused space back to the free pool.
 
-  fs.xfs.speculative_cow_prealloc_lifetime
-	This is an alias for speculative_prealloc_lifetime.
-
   fs.xfs.error_level		(Min: 0  Default: 3  Max: 11)
 	A volume knob for error reporting when internal errors occur.
 	This will generate detailed messages & backtraces for filesystem
@@ -318,17 +315,6 @@ The following sysctls are available for the XFS filesystem:
 
 	This option is intended for debugging only.
 
-  fs.xfs.irix_symlink_mode	(Min: 0  Default: 0  Max: 1)
-	Controls whether symlinks are created with mode 0777 (default)
-	or whether their mode is affected by the umask (irix mode).
-
-  fs.xfs.irix_sgid_inherit	(Min: 0  Default: 0  Max: 1)
-	Controls files created in SGID directories.
-	If the group ID of the new file does not match the effective group
-	ID or one of the supplementary group IDs of the parent dir, the
-	ISGID bit is cleared if the irix_sgid_inherit compatibility sysctl
-	is set.
-
   fs.xfs.inherit_sync		(Min: 0  Default: 1  Max: 1)
 	Setting this to "1" will cause the "sync" flag set
 	by the **xfs_io(8)** chattr command on a directory to be
@@ -364,14 +350,7 @@ The following sysctls are available for the XFS filesystem:
 Deprecated Sysctls
 ==================
 
-===========================================     ================
+None currently.
-  Name                                          Removal Schedule
-===========================================     ================
-fs.xfs.irix_sgid_inherit                        September 2025
-fs.xfs.irix_symlink_mode                        September 2025
-fs.xfs.speculative_cow_prealloc_lifetime        September 2025
-===========================================     ================
-
 
 Removed Sysctls
 ===============
@@ -381,6 +360,9 @@ Removed Sysctls
 =============================	=======
   fs.xfs.xfsbufd_centisec	v4.0
   fs.xfs.age_buffer_centisecs	v4.0
+  fs.xfs.irix_symlink_mode      v6.18
+  fs.xfs.irix_sgid_inherit      v6.18
+  fs.xfs.speculative_cow_prealloc_lifetime      v6.18
 =============================	=======
 
 Error handling

fs/xfs/libxfs/xfs_inode_util.c

@@ -299,17 +299,6 @@ xfs_inode_init(
 		} else {
 			inode_init_owner(args->idmap, inode, dir, args->mode);
 		}
-
-		/*
-		 * If the group ID of the new file does not match the effective
-		 * group ID or one of the supplementary group IDs, the S_ISGID
-		 * bit is cleared (and only if the irix_sgid_inherit
-		 * compatibility variable is set).
-		 */
-		if (irix_sgid_inherit && (inode->i_mode & S_ISGID) &&
-		    !vfsgid_in_group_p(i_gid_into_vfsgid(args->idmap, inode)))
-			inode->i_mode &= ~S_ISGID;
-
 		ip->i_projid = xfs_get_initial_prid(pip);
 	}
 

fs/xfs/xfs_globals.c

@@ -14,8 +14,6 @@
  */
 xfs_param_t xfs_params = {
 			  /*	MIN		DFLT		MAX	*/
-	.sgid_inherit	= {	0,		0,		1	},
-	.symlink_mode	= {	0,		0,		1	},
 	.panic_mask	= {	0,		0,		XFS_PTAG_MASK},
 	.error_level	= {	0,		3,		11	},
 	.syncd_timer	= {	1*100,		30*100,		7200*100},

fs/xfs/xfs_iops.c

@@ -435,10 +435,8 @@ xfs_vn_symlink(
 	struct xfs_inode	*cip = NULL;
 	struct xfs_name		name;
 	int			error;
-	umode_t		mode;
+	umode_t			mode = S_IFLNK | S_IRWXUGO;
 
-	mode = S_IFLNK |
-		(irix_symlink_mode ? 0777 & ~current_umask() : S_IRWXUGO);
 	error = xfs_dentry_mode_to_name(&name, dentry, mode);
 	if (unlikely(error))
 		goto out;

fs/xfs/xfs_linux.h

@@ -89,8 +89,6 @@ typedef __u32			xfs_nlink_t;
 #undef XFS_NATIVE_HOST
 #endif
 
-#define irix_sgid_inherit	xfs_params.sgid_inherit.val
-#define irix_symlink_mode	xfs_params.symlink_mode.val
 #define xfs_panic_mask		xfs_params.panic_mask.val
 #define xfs_error_level		xfs_params.error_level.val
 #define xfs_syncd_centisecs	xfs_params.syncd_timer.val

fs/xfs/xfs_sysctl.c

@@ -50,7 +50,7 @@ xfs_panic_mask_proc_handler(
 }
 #endif /* CONFIG_PROC_FS */
 
-STATIC int
+static inline int
 xfs_deprecated_dointvec_minmax(
 	const struct ctl_table	*ctl,
 	int			write,
@@ -67,24 +67,6 @@ xfs_deprecated_dointvec_minmax(
 }
 
 static const struct ctl_table xfs_table[] = {
-	{
-		.procname	= "irix_sgid_inherit",
-		.data		= &xfs_params.sgid_inherit.val,
-		.maxlen		= sizeof(int),
-		.mode		= 0644,
-		.proc_handler	= xfs_deprecated_dointvec_minmax,
-		.extra1		= &xfs_params.sgid_inherit.min,
-		.extra2		= &xfs_params.sgid_inherit.max
-	},
-	{
-		.procname	= "irix_symlink_mode",
-		.data		= &xfs_params.symlink_mode.val,
-		.maxlen		= sizeof(int),
-		.mode		= 0644,
-		.proc_handler	= xfs_deprecated_dointvec_minmax,
-		.extra1		= &xfs_params.symlink_mode.min,
-		.extra2		= &xfs_params.symlink_mode.max
-	},
 	{
 		.procname	= "panic_mask",
 		.data		= &xfs_params.panic_mask.val,
@@ -185,15 +167,6 @@ static const struct ctl_table xfs_table[] = {
 		.extra1		= &xfs_params.blockgc_timer.min,
 		.extra2		= &xfs_params.blockgc_timer.max,
 	},
-	{
-		.procname	= "speculative_cow_prealloc_lifetime",
-		.data		= &xfs_params.blockgc_timer.val,
-		.maxlen		= sizeof(int),
-		.mode		= 0644,
-		.proc_handler	= xfs_deprecated_dointvec_minmax,
-		.extra1		= &xfs_params.blockgc_timer.min,
-		.extra2		= &xfs_params.blockgc_timer.max,
-	},
 	/* please keep this the last entry */
 #ifdef CONFIG_PROC_FS
 	{

fs/xfs/xfs_sysctl.h

@@ -19,9 +19,6 @@ typedef struct xfs_sysctl_val {
 } xfs_sysctl_val_t;
 
 typedef struct xfs_param {
-	xfs_sysctl_val_t sgid_inherit;	/* Inherit S_ISGID if process' GID is
-					 * not a member of parent dir GID. */
-	xfs_sysctl_val_t symlink_mode;	/* Link creat mode affected by umask */
 	xfs_sysctl_val_t panic_mask;	/* bitmask to cause panic on errors. */
 	xfs_sysctl_val_t error_level;	/* Degree of reporting for problems  */
 	xfs_sysctl_val_t syncd_timer;	/* Interval between xfssyncd wakeups */