[PATCH v6 17/17] fs: enable pre-content events on supported file systems

[Josef Bacik <josef@toxicpanda.com>]

Now that all the code has been added for pre-content events, and the
various file systems that need the page fault hooks for fsnotify have
been updated, add SB_I_ALLOW_HSM to the supported file systems.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
---
 fs/btrfs/super.c   | 5 +++--
 fs/ext4/super.c    | 3 +++
 fs/xfs/xfs_super.c | 2 +-
 3 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index c64d07134122..9c3877aee9d4 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -963,7 +963,7 @@ static int btrfs_fill_super(struct super_block *sb,
 #endif
 	sb->s_xattr = btrfs_xattr_handlers;
 	sb->s_time_gran = 1;
-	sb->s_iflags |= SB_I_CGROUPWB;
+	sb->s_iflags |= SB_I_CGROUPWB | SB_I_ALLOW_HSM;
 
 	err = super_setup_bdi(sb);
 	if (err) {
@@ -2191,7 +2191,8 @@ static struct file_system_type btrfs_fs_type = {
 	.init_fs_context	= btrfs_init_fs_context,
 	.parameters		= btrfs_fs_parameters,
 	.kill_sb		= btrfs_kill_super,
-	.fs_flags		= FS_REQUIRES_DEV | FS_BINARY_MOUNTDATA | FS_ALLOW_IDMAP,
+	.fs_flags		= FS_REQUIRES_DEV | FS_BINARY_MOUNTDATA |
+				  FS_ALLOW_IDMAP,
  };
 
 MODULE_ALIAS_FS("btrfs");
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 16a4ce704460..733d71dac09e 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -5266,6 +5266,9 @@ static int __ext4_fill_super(struct fs_context *fc, struct super_block *sb)
 	/* i_version is always enabled now */
 	sb->s_flags |= SB_I_VERSION;
 
+	/* HSM events are allowed by default. */
+	sb->s_iflags |= SB_I_ALLOW_HSM;
+
 	err = ext4_check_feature_compatibility(sb, es, silent);
 	if (err)
 		goto failed_mount;
diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index fbb3a1594c0d..b6cd52f2289d 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -1713,7 +1713,7 @@ xfs_fs_fill_super(
 		sb->s_time_max = XFS_LEGACY_TIME_MAX;
 	}
 	trace_xfs_inode_timestamp_range(mp, sb->s_time_min, sb->s_time_max);
-	sb->s_iflags |= SB_I_CGROUPWB;
+	sb->s_iflags |= SB_I_CGROUPWB | SB_I_ALLOW_HSM;
 
 	set_posix_acl_flag(sb);
 
-- 
2.43.0