linux-toradex.git/drivers/block/drbd/drbd_proc.c, branch v3.10.71

Merge branch 'for-3.10/drivers' of git://git.kernel.dk/linux-block

2013-05-08T18:51:05+00:00

Pull block driver updates from Jens Axboe:
 "It might look big in volume, but when categorized, not a lot of
  drivers are touched.  The pull request contains:

   - mtip32xx fixes from Micron.

   - A slew of drbd updates, this time in a nicer series.

   - bcache, a flash/ssd caching framework from Kent.

   - Fixes for cciss"

* 'for-3.10/drivers' of git://git.kernel.dk/linux-block: (66 commits)
  bcache: Use bd_link_disk_holder()
  bcache: Allocator cleanup/fixes
  cciss: bug fix to prevent cciss from loading in kdump crash kernel
  cciss: add cciss_allow_hpsa module parameter
  drivers/block/mg_disk.c: add CONFIG_PM_SLEEP to suspend/resume functions
  mtip32xx: Workaround for unaligned writes
  bcache: Make sure blocksize isn't smaller than device blocksize
  bcache: Fix merge_bvec_fn usage for when it modifies the bvm
  bcache: Correctly check against BIO_MAX_PAGES
  bcache: Hack around stuff that clones up to bi_max_vecs
  bcache: Set ra_pages based on backing device's ra_pages
  bcache: Take data offset from the bdev superblock.
  mtip32xx: mtip32xx: Disable TRIM support
  mtip32xx: fix a smatch warning
  bcache: Disable broken btree fuzz tester
  bcache: Fix a format string overflow
  bcache: Fix a minor memory leak on device teardown
  bcache: Documentation updates
  bcache: Use WARN_ONCE() instead of __WARN()
  bcache: Add missing #include 
  ...

procfs: new helper - PDE_DATA(inode)

2013-04-09T18:13:32+00:00

The only part of proc_dir_entry the code outside of fs/proc
really cares about is PDE(inode)->data.  Provide a helper
for that; static inline for now, eventually will be moved
to fs/proc, along with the knowledge of struct proc_dir_entry
layout.

Signed-off-by: Al Viro

drbd: add module_put() on error path in drbd_proc_open()

2013-03-28T16:10:25+00:00

If single_open() fails in drbd_proc_open(), module refcount is left incremented.
The patch adds module_put() on the error path.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov 
Signed-off-by: Philipp Reisner 
Signed-off-by: Lars Ellenberg 
Signed-off-by: Jens Axboe

drbd: introduce stop-sector to online verify

2012-11-09T13:05:32+00:00

We now can schedule only a specific range of sectors for online verify,
or interrupt a running verify without interrupting the connection.

Had to bump the protocol version differently, we are now 101.
Added verify_can_do_stop_sector() { protocol >= 97 && protocol != 100; }

Also, the return value convention for worker callbacks has changed,
we returned "true/false" for "keep the connection up" in 8.3,
we return 0 for success and <= for failure in 8.4.
Affected: receive_state()

Signed-off-by: Philipp Reisner 
Signed-off-by: Lars Ellenberg

drbd: reset congestion information before reporting it in /proc/drbd

2012-11-08T15:58:39+00:00

We cache the congestion status in mdev->congestion_reason whenever
drbd_congested() was called.
Reset this cached info before reporting it when reading /proc/drbd.

Signed-off-by: Philipp Reisner 
Signed-off-by: Lars Ellenberg

drbd: Move list of epochs from mdev to tconn

2012-11-08T15:58:08+00:00

This is necessary since the transfer_log on the sending is also
per tconn.

Signed-off-by: Philipp Reisner 
Signed-off-by: Lars Ellenberg

drbd: Move write_ordering from mdev to tconn

2012-11-08T15:58:07+00:00

This is necessary in order to prepare the move of the (receiver side)
epoch list from the device (mdev) to the connection (tconn) objects.

Signed-off-by: Philipp Reisner 
Signed-off-by: Lars Ellenberg

drbd: cosmetic: fix accidental division instead of modulo when pretty printing

2012-11-08T15:57:43+00:00

For large resync rates, seq_printf_with_thousands_grouping()
accidentally only produced Y,000,00Y, instead of the real numbers.

Signed-off-by: Philipp Reisner 
Signed-off-by: Lars Ellenberg

drbd: Removing drbd_cfg_rwsem

2012-11-08T15:55:48+00:00

 * Updates to all configuration items is done under genl_lock().
   Including removal of mdevs or tconns.
 * All read non sleeping read sides are protected by rcu
 * All sleeping read sides keep reference counts to keep the
   objects alive

Signed-off-by: Philipp Reisner 
Signed-off-by: Lars Ellenberg

drbd: rcu_read_lock() and rcu_dereference() for tconn->net_conf

2012-11-08T15:48:59+00:00

Removing the get_net_conf()/put_net_conf() calls

Signed-off-by: Philipp Reisner 
Signed-off-by: Lars Ellenberg