Hi Alexander,
I noticed that mount_sem is down'd and up'd in bdev/nodev versions of
get_sb_XXX() but only down'd in get_sb_single(). I also see that the
caller (do_sys_mount) does up(&mount_sem) but never downs it. I thought
up() without a down() is illegal..
Shouldn't get_sb_single() up it or should the other two *not* up it and
let do_sys_mount do it? (i.e. whether the rest of the code in
do_sys_mount() has to be protected by mount_sem or not).
Regards,
Tigran
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