linux-toradex.git/mm/cleancache.c, branch v4.0.7

mm: fix cleancache debugfs directory path

2015-01-20T13:08:31+00:00

Minor fixes for cleancache about wrong debugfs paths
in documentation and code comment.

Signed-off-by: Marcin Jabrzyk 
Signed-off-by: Jiri Kosina

mm: dump page when hitting a VM_BUG_ON using VM_BUG_ON_PAGE

2014-01-24T00:36:50+00:00

Most of the VM_BUG_ON assertions are performed on a page.  Usually, when
one of these assertions fails we'll get a BUG_ON with a call stack and
the registers.

I've recently noticed based on the requests to add a small piece of code
that dumps the page to various VM_BUG_ON sites that the page dump is
quite useful to people debugging issues in mm.

This patch adds a VM_BUG_ON_PAGE(cond, page) which beyond doing what
VM_BUG_ON() does, also dumps the page before executing the actual
BUG_ON.

[akpm@linux-foundation.org: fix up includes]
Signed-off-by: Sasha Levin 
Cc: "Kirill A. Shutemov" 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

mm: cleancache: clean up cleancache_enabled

2013-05-01T00:04:01+00:00

cleancache_ops is used to decide whether backend is registered.
So now cleancache_enabled is always true if defined CONFIG_CLEANCACHE.

Signed-off-by: Bob Liu 
Cc: Wanpeng Li 
Cc: Andor Daam 
Cc: Dan Magenheimer 
Cc: Florian Schmaus 
Cc: Konrad Rzeszutek Wilk 
Cc: Minchan Kim 
Cc: Stefan Hengelein 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

cleancache: Make cleancache_init use a pointer for the ops

2013-05-01T00:04:01+00:00

Instead of using a backend_registered to determine whether a backend is
enabled.  This allows us to remove the backend_register check and just
do 'if (cleancache_ops)'

[v1: Rebase on top of b97c4b430b0a (ramster->zcache move]
Signed-off-by: Konrad Rzeszutek Wilk 
Signed-off-by: Bob Liu 
Cc: Wanpeng Li 
Cc: Andor Daam 
Cc: Dan Magenheimer 
Cc: Florian Schmaus 
Cc: Minchan Kim 
Cc: Stefan Hengelein 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

mm: cleancache: lazy initialization to allow tmem backends to build/run as modules

2013-05-01T00:04:01+00:00

With the goal of allowing tmem backends (zcache, ramster, Xen tmem) to
be built/loaded as modules rather than built-in and enabled by a boot
parameter, this patch provides "lazy initialization", allowing backends
to register to cleancache even after filesystems were mounted.  Calls to
init_fs and init_shared_fs are remembered as fake poolids but no real
tmem_pools created.  On backend registration the fake poolids are mapped
to real poolids and respective tmem_pools.

Signed-off-by: Stefan Hengelein 
Signed-off-by: Florian Schmaus 
Signed-off-by: Andor Daam 
Signed-off-by: Dan Magenheimer 
[v1: Minor fixes: used #define for some values and bools]
[v2: Removed CLEANCACHE_HAS_LAZY_INIT]
[v3: Added more comments, added a lock for [shared_|]fs_poolid_map]
Signed-off-by: Konrad Rzeszutek Wilk 
Signed-off-by: Bob Liu 
Cc: Wanpeng Li 
Cc: Minchan Kim 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

fs: encode_fh: return FILEID_INVALID if invalid fid_type

2013-02-26T07:46:10+00:00

This patch is a follow up on below patch:

[PATCH] exportfs: add FILEID_INVALID to indicate invalid fid_type
commit: 216b6cbdcbd86b1db0754d58886b466ae31f5a63

Signed-off-by: Namjae Jeon 
Signed-off-by: Vivek Trivedi 
Acked-by: Steven Whitehouse 
Acked-by: Sage Weil 
Signed-off-by: Al Viro

->encode_fh() API change

2012-05-30T03:28:33+00:00

pass inode + parent's inode or NULL instead of dentry + bool saying
whether we want the parent or not.

NOTE: that needs ceph fix folded in.

Signed-off-by: Al Viro

mm: cleancache: Use __read_mostly as appropiate.

2012-01-23T21:08:09+00:00

The values are rarely changed so might as well put them in the
appropiate section.

Signed-off-by: Dan Magenheimer 
Signed-off-by: Konrad Wilk 
Cc: Kamezawa Hiroyuki 
Cc: Jan Beulich 
Acked-by: Seth Jennings 
Cc: Jeremy Fitzhardinge 
Cc: Hugh Dickins 
Cc: Johannes Weiner 
Cc: Nitin Gupta 
Cc: Matthew Wilcox 
Cc: Chris Mason 
Cc: Rik Riel 
Cc: Andrew Morton

mm: cleancache: report statistics via debugfs instead of sysfs.

2012-01-23T21:07:50+00:00

[v9: akpm@linux-foundation.org: sysfs->debugfs; no longer need Doc/ABI file]

Signed-off-by: Dan Magenheimer 
Signed-off-by: Konrad Wilk 
Cc: Jan Beulich 
Acked-by: Seth Jennings 
Cc: Jeremy Fitzhardinge 
Cc: Hugh Dickins 
Cc: Johannes Weiner 
Cc: Nitin Gupta 
Cc: Matthew Wilcox 
Cc: Chris Mason 
Cc: Rik Riel 
Cc: Andrew Morton

mm: zcache/tmem/cleancache: s/flush/invalidate/

2012-01-23T21:06:37+00:00

Complete the renaming from "flush" to "invalidate" across
both tmem frontends (cleancache and frontswap) and both tmem backends
(Xen and zcache), as required by akpm.

This change is completely cosmetic.

[v10: no change]
[v9: akpm@linux-foundation.org: change "flush" to "invalidate", part 3]
Signed-off-by: Dan Magenheimer 
Cc: Kamezawa Hiroyuki 
Cc: Jan Beulich 
Acked-by: Seth Jennings 
Cc: Jeremy Fitzhardinge 
Cc: Hugh Dickins 
Cc: Johannes Weiner 
Cc: Nitin Gupta 
Cc: Matthew Wilcox 
Cc: Chris Mason 
Cc: Rik Riel 
Cc: Andrew Morton 
[v11: Remove the frontswap part]
Signed-off-by: Konrad Rzeszutek Wilk