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| author | Christian Brauner <brauner@kernel.org> | 2022-02-03 14:14:10 +0100 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2022-02-14 08:37:40 +0100 |
| commit | ad1844a0127af8fbb87d3d7019907260daf6466b (patch) | |
| tree | 142c1f810c31925e0aadaa390211cb638426548d /fs/namespace.c | |
| parent | 03b6abee9ba67c20c4e5253e1a347d8c26edc511 (diff) | |
| download | linux-ad1844a0127af8fbb87d3d7019907260daf6466b.tar.gz linux-ad1844a0127af8fbb87d3d7019907260daf6466b.tar.bz2 linux-ad1844a0127af8fbb87d3d7019907260daf6466b.zip | |
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.c | 7 |
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)) |