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vfs: simple_set_mnt() should return void

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simple_set_mnt() is defined as returning 'int' but always returns 0.
Callers assume simple_set_mnt() never fails and don't properly cleanup if
it were to _ever_ fail.  For instance, get_sb_single() and get_sb_nodev()
should:

        up_write(sb->s_unmount);
        deactivate_super(sb);

if simple_set_mnt() fails.

Since simple_set_mnt() never fails, would be cleaner if it did not
return anything.

[[email protected]: fix build]
Signed-off-by: Sukadev Bhattiprolu <[email protected]>
Acked-by: Serge Hallyn <[email protected]>
Cc: Al Viro <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Al Viro <[email protected]>
This commit is contained in:
Sukadev Bhattiprolu 2009-03-04 12:06:34 -08:00 • committed by Al Viro
commit a3ec947c85
11 changed files with 28 additions and 16 deletions
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3
fs/libfs.c
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@ -242,7 +242,8 @@ int get_sb_pseudo(struct file_system_type *fs_type, char *name,
d_instantiate(dentry, root);
s->s_root = dentry;
s->s_flags |= MS_ACTIVE;
return simple_set_mnt(mnt, s);
simple_set_mnt(mnt, s);
return 0;
Enomem:
up_write(&s->s_umount);