linux-toradex.git/include, branch v3.4.24

tmpfs: fix shared mempolicy leak

2012-12-17T18:37:42+00:00

commit 18a2f371f5edf41810f6469cb9be39931ef9deb9 upstream.

This fixes a regression in 3.7-rc, which has since gone into stable.

Commit 00442ad04a5e ("mempolicy: fix a memory corruption by refcount
imbalance in alloc_pages_vma()") changed get_vma_policy() to raise the
refcount on a shmem shared mempolicy; whereas shmem_alloc_page() went
on expecting alloc_page_vma() to drop the refcount it had acquired.
This deserves a rework: but for now fix the leak in shmem_alloc_page().

Hugh: shmem_swapin() did not need a fix, but surely it's clearer to use
the same refcounting there as in shmem_alloc_page(), delete its onstack
mempolicy, and the strange mpol_cond_copy() and __mpol_cond_copy() -
those were invented to let swapin_readahead() make an unknown number of
calls to alloc_pages_vma() with one mempolicy; but since 00442ad04a5e,
alloc_pages_vma() has kept refcount in balance, so now no problem.

Reported-and-tested-by: Tommi Rantala 
Signed-off-by: Mel Gorman 
Signed-off-by: Hugh Dickins 
Signed-off-by: Linus Torvalds 
Signed-off-by: Greg Kroah-Hartman

drm/radeon: add new SI pci id

2012-12-03T19:47:01+00:00

commit 0181bd5dea2ed0696f84591a92da0b6a1f1a2e62 upstream.

Signed-off-by: Alex Deucher 
Signed-off-by: Greg Kroah-Hartman

libceph: drop declaration of ceph_con_get()

2012-11-26T19:38:45+00:00

commit 261030215d970c62f799e6e508e3c68fc7ec2aa9 upstream.

For some reason the declaration of ceph_con_get() and
ceph_con_put() did not get deleted in this commit:
    d59315ca libceph: drop ceph_con_get/put helpers and nref member

Clean that up.

Signed-off-by: Alex Elder 
Cc: Herton Ronaldo Krzesinski 
Signed-off-by: Greg Kroah-Hartman

libceph: check for invalid mapping

2012-11-26T19:38:44+00:00

(cherry picked from commit d63b77f4c552cc3a20506871046ab0fcbc332609)

If we encounter an invalid (e.g., zeroed) mapping, return an error
and avoid a divide by zero.

Signed-off-by: Sage Weil 
Reviewed-by: Alex Elder 
Signed-off-by: Greg Kroah-Hartman

libceph: clean up con flags

2012-11-26T19:38:41+00:00

(cherry picked from commit 4a8616920860920abaa51193146fe36b38ef09aa)

Rename flags with CON_FLAG prefix, move the definitions into the c file,
and (better) document their meaning.

Signed-off-by: Sage Weil 
Signed-off-by: Greg Kroah-Hartman

libceph: replace connection state bits with states

2012-11-26T19:38:41+00:00

(cherry picked from commit 8dacc7da69a491c515851e68de6036f21b5663ce)

Use a simple set of 6 enumerated values for the socket states (CON_STATE_*)
and use those instead of the state bits.  All of the con->state checks are
now under the protection of the con mutex, so this is safe.  It also
simplifies many of the state checks because we can check for anything other
than the expected state instead of various bits for races we can think of.

This appears to hold up well to stress testing both with and without socket
failure injection on the server side.

Signed-off-by: Sage Weil 
Signed-off-by: Greg Kroah-Hartman

libceph: prevent the race of incoming work during teardown

2012-11-26T19:38:38+00:00

(cherry picked from commit a2a3258417eb6a1799cf893350771428875a8287)

Add an atomic variable 'stopping' as flag in struct ceph_messenger,
set this flag to 1 in function ceph_destroy_client(), and add the condition code
in function ceph_data_ready() to test the flag value, if true(1), just return.

Signed-off-by: Guanjun He 
Reviewed-by: Sage Weil 
Signed-off-by: Greg Kroah-Hartman

libceph: initialize msgpool message types

2012-11-26T19:38:38+00:00

(cherry picked from commit d50b409fb8698571d8209e5adfe122e287e31290)

Initialize the type field for messages in a msgpool.  The caller was doing
this for osd ops, but not for the reply messages.

Reported-by: Alex Elder 
Signed-off-by: Sage Weil 
Signed-off-by: Greg Kroah-Hartman

libceph: set peer name on con_open, not init

2012-11-26T19:38:37+00:00

(cherry picked from commit b7a9e5dd40f17a48a72f249b8bbc989b63bae5fd)

The peer name may change on each open attempt, even when the connection is
reused.

Signed-off-by: Sage Weil 
Signed-off-by: Greg Kroah-Hartman

libceph: define and use an explicit CONNECTED state

2012-11-26T19:38:28+00:00

(cherry picked from commit e27947c767f5bed15048f4e4dad3e2eb69133697)

There is no state explicitly defined when a ceph connection is fully
operational.  So define one.

It's set when the connection sequence completes successfully, and is
cleared when the connection gets closed.

Be a little more careful when examining the old state when a socket
disconnect event is reported.

Signed-off-by: Alex Elder 
Reviewed-by: Sage Weil 
Signed-off-by: Greg Kroah-Hartman