mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-12 21:57:43 +00:00
d4d3aa38d6
Previous patch that allowed us to cleanup most of the issues with pages marked as private_2 when calling ceph_readpages. However, there seams to be a case in the error case clean up in start read that still trigers this from time to time. I've only seen this one a couple times. BUG: Bad page state in process petabucket pfn:335b82 page:ffffea000cd6e080 count:0 mapcount:0 mapping: (null) index:0x0 page flags: 0x200000000001000(private_2) Call Trace: [<ffffffff81563442>] dump_stack+0x46/0x58 [<ffffffff8112c7f7>] bad_page+0xc7/0x120 [<ffffffff8112cd9e>] free_pages_prepare+0x10e/0x120 [<ffffffff8112e580>] free_hot_cold_page+0x40/0x160 [<ffffffff81132427>] __put_single_page+0x27/0x30 [<ffffffff81132d95>] put_page+0x25/0x40 [<ffffffffa02cb409>] ceph_readpages+0x2e9/0x6f0 [ceph] [<ffffffff811313cf>] __do_page_cache_readahead+0x1af/0x260 Signed-off-by: Milosz Tanski <milosz@adfin.com> Signed-off-by: Sage Weil <sage@inktank.com>
157 lines
3.9 KiB
C
157 lines
3.9 KiB
C
/*
|
|
* 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
|
|
|
|
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_inode_init(struct ceph_inode_info *ci);
|
|
void ceph_fscache_register_inode_cookie(struct ceph_fs_client* fsc,
|
|
struct ceph_inode_info* ci);
|
|
void ceph_fscache_unregister_inode_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);
|
|
void ceph_queue_revalidate(struct inode *inode);
|
|
|
|
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_readpages_cancel(struct inode *inode,
|
|
struct list_head *pages)
|
|
{
|
|
struct ceph_inode_info *ci = ceph_inode(inode);
|
|
return fscache_readpages_cancel(ci->fscache, pages);
|
|
}
|
|
|
|
#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 ceph_fs_client* parent_fsc,
|
|
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 void ceph_fscache_unregister_inode_cookie(struct ceph_inode_info* ci)
|
|
{
|
|
}
|
|
|
|
static inline int ceph_release_fscache_page(struct page *page, gfp_t gfp)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
static inline void ceph_fscache_readpages_cancel(struct inode *inode,
|
|
struct list_head *pages)
|
|
{
|
|
}
|
|
|
|
static inline void ceph_queue_revalidate(struct inode *inode)
|
|
{
|
|
}
|
|
|
|
#endif
|
|
|
|
#endif
|