/*
* Ceph cache definitions.
*
* Copyright (C) 2013 by Adfin Solutions, Inc. All Rights Reserved.
* Written by Milosz Tanski (milosz@adfin.com)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to:
* Free Software Foundation
* 51 Franklin Street, Fifth Floor
* Boston, MA 02111-1301 USA
*
*/
#ifndef _CEPH_CACHE_H
#define _CEPH_CACHE_H
#ifdef CONFIG_CEPH_FSCACHE
extern struct fscache_netfs ceph_cache_netfs;
int ceph_fscache_register(void);
void ceph_fscache_unregister(void);
int ceph_fscache_register_fs(struct ceph_fs_client* fsc);
void ceph_fscache_unregister_fs(struct ceph_fs_client* fsc);
void ceph_fscache_register_inode_cookie(struct inode *inode);
void ceph_fscache_unregister_inode_cookie(struct ceph_inode_info* ci);
void ceph_fscache_file_set_cookie(struct inode *inode, struct file *filp);
void ceph_fscache_revalidate_cookie(struct ceph_inode_info *ci);
int ceph_readpage_from_fscache(struct inode *inode, struct page *page);
int ceph_readpages_from_fscache(struct inode *inode,
struct address_space *mapping,
struct list_head *pages,
unsigned *nr_pages);
void ceph_readpage_to_fscache(struct inode *inode, struct page *page);
void ceph_invalidate_fscache_page(struct inode* inode, struct page *page);
static inline void ceph_fscache_inode_init(struct ceph_inode_info *ci)
{
ci->fscache = NULL;
ci->i_fscache_gen = 0;
}
static inline void ceph_fscache_invalidate(struct inode *inode)
{
fscache_invalidate(ceph_inode(inode)->fscache);
}
static inline void ceph_fscache_uncache_page(struct inode *inode,
struct page *page)
{
struct ceph_inode_info *ci = ceph_inode(inode);
return fscache_uncache_page(ci->fscache, page);
}
static inline int ceph_release_fscache_page(struct page *page, gfp_t gfp)
{
struct inode* inode = page->mapping->host;
struct ceph_inode_info *ci = ceph_inode(inode);
return fscache_maybe_release_page(ci->fscache, page, gfp);
}
static inline void ceph_fscache_readpage_cancel(struct inode *inode,
struct page *page)
{
struct ceph_inode_info *ci = ceph_inode(inode);
if (fscache_cookie_valid(ci->fscache) && PageFsCache(page))
__fscache_uncache_page(ci->fscache, page);
}
static inline void ceph_fscache_readpages_cancel(struct inode *inode,
struct list_head *pages)
{
struct ceph_inode_info *ci = ceph_inode(inode);
return fscache_readpages_cancel(ci->fscache, pages);
}
static inline void ceph_disable_fscache_readpage(struct ceph_inode_info *ci)
{
ci->i_fscache_gen = ci->i_rdcache_gen - 1;
}
#else
static inline int ceph_fscache_register(void)
{
return 0;
}
static inline void ceph_fscache_unregister(void)
{
}
static inline int ceph_fscache_register_fs(struct ceph_fs_client* fsc)
{
return 0;
}
static inline void ceph_fscache_unregister_fs(struct ceph_fs_client* fsc)
{
}
static inline void ceph_fscache_inode_init(struct ceph_inode_info *ci)
{
}
static inline void ceph_fscache_register_inode_cookie(struct inode *inode)
{
}
static inline void ceph_fscache_unregister_inode_cookie(struct ceph_inode_info* ci)
{
}
static inline void ceph_fscache_file_set_cookie(struct inode *inode,
struct file *filp)
{
}
static inline void ceph_fscache_revalidate_cookie(struct ceph_inode_info *ci)
{
}
static inline void ceph_fscache_uncache_page(struct inode *inode,
struct page *pages)
{
}
static inline int ceph_readpage_from_fscache(struct inode* inode,
struct page *page)
{
return -ENOBUFS;
}
static inline int ceph_readpages_from_fscache(struct inode *inode,
struct address_space *mapping,
struct list_head *pages,
unsigned *nr_pages)
{
return -ENOBUFS;
}
static inline void ceph_readpage_to_fscache(struct inode *inode,
struct page *page)
{
}
static inline void ceph_fscache_invalidate(struct inode *inode)
{
}
static inline void ceph_invalidate_fscache_page(struct inode *inode,
struct page *page)
{
}
static inline int ceph_release_fscache_page(struct page *page, gfp_t gfp)
{
return 1;
}
static inline void ceph_fscache_readpage_cancel(struct inode *inode,
struct page *page)
{
}
static inline void ceph_fscache_readpages_cancel(struct inode *inode,
struct list_head *pages)
{
}
static inline void ceph_disable_fscache_readpage(struct ceph_inode_info *ci)
{
}
#endif
#endif
th>tree| f63906f41699c8e38af9d12b063e2ceab0286ef2 /Documentation/device-mapper/persistent-data.txt |
| parent | e34bac726d27056081d0250c0e173e4b155aa340 (diff) |
|---|
| parent | 868c97a846a73e937d835b09b8c885a69df50ec8 (diff) |
|---|
Merge tag 'docs-4.10' of git://git.lwn.net/linux
HEADmasterPull documentation update from Jonathan Corbet:
"These are the documentation changes for 4.10.
It's another busy cycle for the docs tree, as the sphinx conversion
continues. Highlights include:
- Further work on PDF output, which remains a bit of a pain but
should be more solid now.
- Five more DocBook template files converted to Sphinx. Only 27 to
go... Lots of plain-text files have also been converted and
integrated.
- Images in binary formats have been replaced with more
source-friendly versions.
- Various bits of organizational work, including the renaming of
various files discussed at the kernel summit.
- New documentation for the device_link mechanism.
... and, of course, lots of typo fixes and small updates"
* tag 'docs-4.10' of git://git.lwn.net/linux: (193 commits)
dma-buf: Extract dma-buf.rst
Update Documentation/00-INDEX
docs: 00-INDEX: document directories/files with no docs
docs: 00-INDEX: remove non-existing entries
docs: 00-INDEX: add missing entries for documentation files/dirs
docs: 00-INDEX: consolidate process/ and admin-guide/ description
scripts: add a script to check if Documentation/00-INDEX is sane
Docs: change sh -> awk in REPORTING-BUGS
Documentation/core-api/device_link: Add initial documentation
core-api: remove an unexpected unident
ppc/idle: Add documentation for powersave=off
Doc: Correct typo, "Introdution" => "Introduction"
Documentation/atomic_ops.txt: convert to ReST markup
Documentation/local_ops.txt: convert to ReST markup
Documentation/assoc_array.txt: convert to ReST markup
docs-rst: parse-headers.pl: cleanup the documentation
docs-rst: fix media cleandocs target
docs-rst: media/Makefile: reorganize the rules
docs-rst: media: build SVG from graphviz files
docs-rst: replace bayer.png by a SVG image
...