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In get_super() and user_get_super() restarts are unconditional

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If superblock had been still alive, we would've returned it...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2010-03-22 20:23:25 -04:00
parent 1494583de5
commit df40c01a92
1 changed files with 10 additions and 8 deletions
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10
fs/super.c
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@ -441,12 +441,13 @@ rescan:
sb->s_count++;
spin_unlock(&sb_lock);
down_read(&sb->s_umount);
/* still alive? */
if (sb->s_root)
return sb;
up_read(&sb->s_umount);
/* restart only when sb is no longer on the list */
/* nope, got unmounted */
spin_lock(&sb_lock);
if (__put_super_and_need_restart(sb))
__put_super(sb);
goto rescan;
}
}
@ -500,12 +501,13 @@ rescan:
sb->s_count++;
spin_unlock(&sb_lock);
down_read(&sb->s_umount);
/* still alive? */
if (sb->s_root)
return sb;
up_read(&sb->s_umount);
/* restart only when sb is no longer on the list */
/* nope, got unmounted */
spin_lock(&sb_lock);
if (__put_super_and_need_restart(sb))
__put_super(sb);
goto rescan;
}
}