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Diffstat (limited to 'include/linux/nfs_page.h')
-rw-r--r--include/linux/nfs_page.h13
1 files changed, 11 insertions, 2 deletions
diff --git a/include/linux/nfs_page.h b/include/linux/nfs_page.h
index 13d59af561f6..986c0c279d0e 100644
--- a/include/linux/nfs_page.h
+++ b/include/linux/nfs_page.h
@@ -26,6 +26,9 @@ enum {
PG_MAPPED, /* page private set for buffered io */
PG_CLEAN, /* write succeeded */
PG_COMMIT_TO_DS, /* used by pnfs layouts */
+ PG_INODE_REF, /* extra ref held by inode (head req only) */
+ PG_HEADLOCK, /* page group lock of wb_head */
+ PG_TEARDOWN, /* page group sync for destroy */
};
struct nfs_inode;
@@ -41,6 +44,8 @@ struct nfs_page {
struct kref wb_kref; /* reference count */
unsigned long wb_flags;
struct nfs_write_verifier wb_verf; /* Commit cookie */
+ struct nfs_page *wb_this_page; /* list of reqs for this page */
+ struct nfs_page *wb_head; /* head pointer for req list */
};
struct nfs_pageio_descriptor;
@@ -87,9 +92,10 @@ struct nfs_pageio_descriptor {
extern struct nfs_page *nfs_create_request(struct nfs_open_context *ctx,
struct page *page,
+ struct nfs_page *last,
unsigned int offset,
unsigned int count);
-extern void nfs_release_request(struct nfs_page *req);
+extern void nfs_release_request(struct nfs_page *);
extern void nfs_pageio_init(struct nfs_pageio_descriptor *desc,
@@ -108,7 +114,10 @@ extern size_t nfs_generic_pg_test(struct nfs_pageio_descriptor *desc,
struct nfs_page *req);
extern int nfs_wait_on_request(struct nfs_page *);
extern void nfs_unlock_request(struct nfs_page *req);
-extern void nfs_unlock_and_release_request(struct nfs_page *req);
+extern void nfs_unlock_and_release_request(struct nfs_page *);
+extern void nfs_page_group_lock(struct nfs_page *);
+extern void nfs_page_group_unlock(struct nfs_page *);
+extern bool nfs_page_group_sync_on_bit(struct nfs_page *, unsigned int);
/*
* Lock the page of an asynchronous request