ufs: ufs_trunc_...() has exclusion with everything that might cause allocations

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Currently - on lock_ufs(), eventually - on per-inode mutex.
lock_ufs() used to be mere BKL, which is much weaker, so it needed
those rechecks.  BKL doesn't provide any exclusion once we lose CPU;
its blind replacement, OTOH, _does_.  Making that per-filesystem was
an atrocity, but at least we can simplify life here.  And yes, we
certainly need to make that sucker per-inode - these days inode.c and
truncate.c uses are needed only to protect the block pointers.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

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Al Viro 2015-06-16 18:45:21 -04:00

parent 6a799d3514

commit 687857930d

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fs/ufs/truncate.c

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