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[dm-devel] Patchset 2.4.20-dm-4


Those of you having trouble activating snapshots should certainly
upgrade (see patch 35 for the full story).

- Joe

Changes since 2.4.20-dm-2

Revision 18:
  Don't hook the io until after the target->map function has been

Revision 19:
  Lift the dm_io allocation out of __map_buffer so that it is outside of
  the read lock.
  Hook all io, not just simple mappings.

Revision 20:
  Use a rw_semaphore in dm_target.c rather than a rwlock_t, just to keep
  in line with dm.c

Revision 21:
  Don't let the ioctl interface drop a suspended device.

Revision 22:
  Call dm_put_target_type() *after* calling the destructor.

Revision 23:

Revision 24:
  printk tgt->error if dm_table_add_target() fails.

Revision 25:
  Just return an error from the error targets map function, rather than
  erroring the buffer_head.

Revision 26:
  Export dm_table_get_mode()

Revision 27:
  If an alloc_page() call fails in init_pages(), unlock all locked
  pages before freeing them. [Kevin Corry]

Revision 28:
  The calls to calc_block_sizes() in kcopyd_write_pages() and kcopyd_copy() are
  redundant, since kcopyd_io() already calls calc_block_sizes().

Revision 29:
  Remove the line in dispatch_bh() that sets bh->b_dev to B_FREE, since it sets
  bh->b_dev to job->disk.dev a few lines later. [Kevin Corry]

Revision 30:
  Move a set_bit() into the preceeding assignment statement.  [Kevin Corry]

Revision 31:
  Set bh->b_count to 1 in dispatch_bh().  [Kevin Corry]

Revision 32:
  Comment fix in run_pages_job().  [Kevin Corry]

Revision 33:
  In copy_write(), don't need to set job->context = info, since it is already
  set to that when the function is called.  [Kevin Corry]

Revision 34:
  Always halt a copy if the read part failed, not just when there is a
  notify_fn (fix coding error).  [Kevin Corry]

Revision 35:
  'Persistent' flag checking in the snapshot target constructor had a
  coding error which meant that it was always invalid.

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