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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 fbdc2f6c40
("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>
This commit is contained in:
parent
03b6abee9b
commit
ad1844a012
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@ -563,12 +563,9 @@ int sb_prepare_remount_readonly(struct super_block *sb)
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lock_mount_hash();
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list_for_each_entry(mnt, &sb->s_mounts, mnt_instance) {
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if (!(mnt->mnt.mnt_flags & MNT_READONLY)) {
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mnt->mnt.mnt_flags |= MNT_WRITE_HOLD;
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smp_mb();
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if (mnt_get_writers(mnt) > 0) {
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err = -EBUSY;
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err = mnt_hold_writers(mnt);
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if (err)
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break;
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}
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}
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}
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if (!err && atomic_long_read(&sb->s_remove_count))
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