On Wed, 2007-04-04 at 08:57 -0400, John Anthony Kazos Jr. wrote:
> Why does ext4_fill_super release the BKL on entry and take it on both 
> normal and abnormal exit? As far as I can see, ext4_fill_super is called 
> by get_sb_bdev, which calls the ->get_sb method without the BKL, and 
> ext4_get_sb calls get_sb_bdev without the BKL. And the ext2 code does not 
> touch the BKL in ext2_fill_super.
> 
> Is the VFS code going to be changed somewhere in the future and it's being 
> anticipated, or is this a bug?

According to Documentation/filesystems/Locking, ->get_sb() is called
with the BKL held, but looking through the code, I'm not able to find
where it is being taken.

Shaggy
-- 
David Kleikamp
IBM Linux Technology Center

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