NFS: Remove fscache specific trace points and NFS_INO_FSCACHE bit

The NFS specific trace points are no longer needed as tracing is well
covered by netfs and fscache.

Signed-off-by: Dave Wysochanski <[e-mail]>
Reviewed-by: Jeff Layton <[e-mail]>
Tested-by: Daire Byrne <[e-mail]>
Signed-off-by: Anna Schumaker <[e-mail]>

fs/nfs/nfstrace.h

···
 			{ BIT(NFS_INO_STALE), "STALE" }, \
 			{ BIT(NFS_INO_ACL_LRU_SET), "ACL_LRU_SET" }, \
 			{ BIT(NFS_INO_INVALIDATING), "INVALIDATING" }, \
-			{ BIT(NFS_INO_FSCACHE), "FSCACHE" }, \
 			{ BIT(NFS_INO_LAYOUTCOMMIT), "NEED_LAYOUTCOMMIT" }, \
 			{ BIT(NFS_INO_LAYOUTCOMMITTING), "LAYOUTCOMMIT" }, \
 			{ BIT(NFS_INO_LAYOUTSTATS), "LAYOUTSTATS" }, \
···
 		)
 );
 
-DECLARE_EVENT_CLASS(nfs_fscache_page_event,
-		TP_PROTO(
-			const struct inode *inode,
-			struct page *page
-		),
-
-		TP_ARGS(inode, page),
-
-		TP_STRUCT__entry(
-			__field(dev_t, dev)
-			__field(u32, fhandle)
-			__field(u64, fileid)
-			__field(loff_t, offset)
-		),
-
-		TP_fast_assign(
-			const struct nfs_inode *nfsi = NFS_I(inode);
-			const struct nfs_fh *fh = &nfsi->fh;
-
-			__entry->offset = page_index(page) << PAGE_SHIFT;
-			__entry->dev = inode->i_sb->s_dev;
-			__entry->fileid = nfsi->fileid;
-			__entry->fhandle = nfs_fhandle_hash(fh);
-		),
-
-		TP_printk(
-			"fileid=%02x:%02x:%llu fhandle=0x%08x "
-			"offset=%lld",
-			MAJOR(__entry->dev), MINOR(__entry->dev),
-			(unsigned long long)__entry->fileid,
-			__entry->fhandle,
-			(long long)__entry->offset
-		)
-);
-DECLARE_EVENT_CLASS(nfs_fscache_page_event_done,
-		TP_PROTO(
-			const struct inode *inode,
-			struct page *page,
-			int error
-		),
-
-		TP_ARGS(inode, page, error),
-
-		TP_STRUCT__entry(
-			__field(int, error)
-			__field(dev_t, dev)
-			__field(u32, fhandle)
-			__field(u64, fileid)
-			__field(loff_t, offset)
-		),
-
-		TP_fast_assign(
-			const struct nfs_inode *nfsi = NFS_I(inode);
-			const struct nfs_fh *fh = &nfsi->fh;
-
-			__entry->offset = page_index(page) << PAGE_SHIFT;
-			__entry->dev = inode->i_sb->s_dev;
-			__entry->fileid = nfsi->fileid;
-			__entry->fhandle = nfs_fhandle_hash(fh);
-			__entry->error = error;
-		),
-
-		TP_printk(
-			"fileid=%02x:%02x:%llu fhandle=0x%08x "
-			"offset=%lld error=%d",
-			MAJOR(__entry->dev), MINOR(__entry->dev),
-			(unsigned long long)__entry->fileid,
-			__entry->fhandle,
-			(long long)__entry->offset, __entry->error
-		)
-);
-#define DEFINE_NFS_FSCACHE_PAGE_EVENT(name) \
-	DEFINE_EVENT(nfs_fscache_page_event, name, \
-			TP_PROTO( \
-				const struct inode *inode, \
-				struct page *page \
-			), \
-			TP_ARGS(inode, page))
-#define DEFINE_NFS_FSCACHE_PAGE_EVENT_DONE(name) \
-	DEFINE_EVENT(nfs_fscache_page_event_done, name, \
-			TP_PROTO( \
-				const struct inode *inode, \
-				struct page *page, \
-				int error \
-			), \
-			TP_ARGS(inode, page, error))
-DEFINE_NFS_FSCACHE_PAGE_EVENT(nfs_fscache_read_page);
-DEFINE_NFS_FSCACHE_PAGE_EVENT_DONE(nfs_fscache_read_page_exit);
-DEFINE_NFS_FSCACHE_PAGE_EVENT(nfs_fscache_write_page);
-DEFINE_NFS_FSCACHE_PAGE_EVENT_DONE(nfs_fscache_write_page_exit);
 
 TRACE_EVENT(nfs_pgio_error,
 	TP_PROTO(

include/linux/nfs_fs.h

···
 #define NFS_INO_ACL_LRU_SET	(2)		/* Inode is on the LRU list */
 #define NFS_INO_INVALIDATING	(3)		/* inode is being invalidated */
 #define NFS_INO_PRESERVE_UNLINKED (4)		/* preserve file if removed while open */
-#define NFS_INO_FSCACHE		(5)		/* inode can be cached by FS-Cache */
 #define NFS_INO_LAYOUTCOMMIT	(9)		/* layoutcommit required */
 #define NFS_INO_LAYOUTCOMMITTING (10)		/* layoutcommit inflight */
 #define NFS_INO_LAYOUTSTATS	(11)		/* layoutstats inflight */