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linux-sg2042
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ceph: page still marked private_2 

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>
This commit is contained in:
Milosz Tanski 2013-09-03 19:11:17 -04:00
parent 9b8dd1e8a5
commit d4d3aa38d6
2 changed files with 14 additions and 1 deletions
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1
fs/ceph/addr.c
View File

@ -336,6 +336,7 @@ static int start_read(struct inode *inode, struct list_head *page_list, int max)
page->index);
if (add_to_page_cache_lru(page, &inode->i_data, page->index,
GFP_NOFS)) {
ceph_fscache_uncache_page(inode, page);
page_cache_release(page);
dout("start_read %p add_to_page_cache failed %p\n",
inode, page);

14
fs/ceph/cache.h
View File

@ -51,6 +51,13 @@ 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;
@ -94,7 +101,8 @@ static inline void ceph_fscache_register_inode_cookie(struct ceph_fs_client* par
{
}
static inline void ceph_fscache_unregister_inode_cookie(struct ceph_inode_info* ci)
static inline void ceph_fscache_uncache_page(struct inode *inode,
struct page *pages)
{
}
@ -126,6 +134,10 @@ static inline void ceph_invalidate_fscache_page(struct inode *inode,
{
}
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;