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authorChristian Brauner <brauner@kernel.org>2022-02-03 16:14:10 +0300
committerChristian Brauner <brauner@kernel.org>2022-02-14 10:37:40 +0300
commitad1844a0127af8fbb87d3d7019907260daf6466b (patch)
tree142c1f810c31925e0aadaa390211cb638426548d /fs/namespace.c
parent03b6abee9ba67c20c4e5253e1a347d8c26edc511 (diff)
downloadlinux-ad1844a0127af8fbb87d3d7019907260daf6466b.tar.xz
fs: don't open-code mnt_hold_writers()
Remove sb_prepare_remount_readonly()'s open-coded mnt_hold_writers() implementation with the real helper we introduced in commit fbdc2f6c40f6 ("fs: split out functions to hold writers"). Link: https://lore.kernel.org/r/20220203131411.3093040-7-brauner@kernel.org Cc: Seth Forshee <seth.forshee@digitalocean.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: linux-fsdevel@vger.kernel.org Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'fs/namespace.c')
-rw-r--r--fs/namespace.c7
1 files changed, 2 insertions, 5 deletions
diff --git a/fs/namespace.c b/fs/namespace.c
index ddae5c08ea8c..00762f9a736a 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -563,12 +563,9 @@ int sb_prepare_remount_readonly(struct super_block *sb)
lock_mount_hash();
list_for_each_entry(mnt, &sb->s_mounts, mnt_instance) {
if (!(mnt->mnt.mnt_flags & MNT_READONLY)) {
- mnt->mnt.mnt_flags |= MNT_WRITE_HOLD;
- smp_mb();
- if (mnt_get_writers(mnt) > 0) {
- err = -EBUSY;
+ err = mnt_hold_writers(mnt);
+ if (err)
break;
- }
}
}
if (!err && atomic_long_read(&sb->s_remove_count))