Bityutskiy Artem (Nokia-D/Helsinki) wrote:
On 07/20/2009 09:16 AM, Hunter Adrian (Nokia-D/Helsinki) wrote:
Artem Bityutskiy wrote:
From: Artem Bityutskiy<Artem.Bityutskiy@xxxxxxxxx>
The BKL was pushed down from VFS to the file-systems. It used
to serialize mount/unmount/remount. UBIFS must be safe if several
file-systems are mounted/unmounted/re-mounted at the same time,
so kill kick the BKL out of UBIFS.
Signed-off-by: Artem Bityutskiy<Artem.Bityutskiy@xxxxxxxxx>
---
Looks like protection is always provided by sb->s_umount
Err, then what would be a possible reason we would need BKL?
Say if we had used BKL instead of c->umount_mutex.
i.e. if we had relied on BKL in some other code
to provide synchronisation with unmounting/remounting etc
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