linux-kernel - [RFC PATCH 04/68] vfs: Provide sb->s_iflags settings in fs

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Date:   Wed, 27 Mar 2019 23:41:06 +0000
From:   David Howells <dhowells@...hat.com>
To:     viro@...iv.linux.org.uk
Cc:     linux-fsdevel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, dhowells@...hat.com
Subject: [RFC PATCH 04/68] vfs: Provide sb->s_iflags settings in fs_context
 struct

Provide a field in the fs_context struct through which bits in the
sb->s_iflags superblock field can be set.

Signed-off-by: David Howells <dhowells@...hat.com>
cc: linux-fsdevel@...r.kernel.org
---

 fs/super.c                 |    1 +
 include/linux/fs_context.h |    1 +
 2 files changed, 2 insertions(+)

diff --git a/fs/super.c b/fs/super.c
index 583a0124bc39..6c3acd633cca 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -543,6 +543,7 @@ struct super_block *sget_fc(struct fs_context *fc,
 	}
 	fc->s_fs_info = NULL;
 	s->s_type = fc->fs_type;
+	s->s_iflags |= fc->s_iflags;
 	strlcpy(s->s_id, s->s_type->name, sizeof(s->s_id));
 	list_add_tail(&s->s_list, &super_blocks);
 	hlist_add_head(&s->s_instances, &s->s_type->fs_supers);
diff --git a/include/linux/fs_context.h b/include/linux/fs_context.h
index eaca452088fa..98b44ad89378 100644
--- a/include/linux/fs_context.h
+++ b/include/linux/fs_context.h
@@ -86,6 +86,7 @@ struct fs_context {
 	void			*s_fs_info;	/* Proposed s_fs_info */
 	unsigned int		sb_flags;	/* Proposed superblock flags (SB_*) */
 	unsigned int		sb_flags_mask;	/* Superblock flags that were changed */
+	unsigned int		s_iflags;	/* OR'd with sb->s_iflags */
 	unsigned int		lsm_flags;	/* Information flags from the fs to the LSM */
 	enum fs_context_purpose	purpose:8;
 	bool			need_free:1;	/* Need to call ops->free() */