aleph/lkl_linux
1
0
Fork 0
mirror of https://github.com/lkl/linux.git synced 2025-12-19 16:13:19 +09:00
Code Issues Packages Projects Releases Wiki Activity

NFS: Configure support for netfs when NFS fscache is configured

Browse Source 
As first steps for support of the netfs library when NFS_FSCACHE is
configured, add NETFS_SUPPORT to Kconfig and add the required netfs_inode
into struct nfs_inode.

Using netfs requires we move the VFS inode structure to be stored
inside struct netfs_inode, along with the fscache_cookie.
Thus, if NFS_FSCACHE is configured, place netfs_inode inside an
anonymous union so the vfs_inode memory is the same and we do
not need to modify other non-fscache areas of NFS.
In addition, inside the NFS fscache code, use the new helpers,
netfs_inode() and netfs_i_cookie() helpers, and remove our own
helper, nfs_i_fscache().

Later patches will convert NFS fscache to fully use netfs.

Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
Tested-by: Daire Byrne <daire@dneg.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Dave Wysochanski
2023-02-20 08:43:05 -05:00
committed by Anna Schumaker
parent 01c3a40084
commit 88a4d7bdee
4 changed files with 26 additions and 34 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
include/linux/nfs_fs.h
View File

@@ -31,6 +31,10 @@
#include <linux/sunrpc/auth.h>
#include <linux/sunrpc/clnt.h>
#ifdef CONFIG_NFS_FSCACHE
#include <linux/netfs.h>
#endif
#include <linux/nfs.h>
#include <linux/nfs2.h>
#include <linux/nfs3.h>
@@ -204,14 +208,15 @@ struct nfs_inode {
/* how many bytes have been written/read and how many bytes queued up */
__u64 write_io;
__u64 read_io;
#ifdef CONFIG_NFS_FSCACHE
struct fscache_cookie *fscache;
#endif
struct inode vfs_inode;
#ifdef CONFIG_NFS_V4_2
struct nfs4_xattr_cache *xattr_cache;
#endif
union {
struct inode vfs_inode;
#ifdef CONFIG_NFS_FSCACHE
struct netfs_inode netfs; /* netfs context and VFS inode */
#endif
};
};
struct nfs4_copy_state {
@@ -329,15 +334,6 @@ static inline int NFS_STALE(const struct inode *inode)
return test_bit(NFS_INO_STALE, &NFS_I(inode)->flags);
}
static inline struct fscache_cookie *nfs_i_fscache(struct inode *inode)
{
#ifdef CONFIG_NFS_FSCACHE
return NFS_I(inode)->fscache;
#else
return NULL;
#endif
}
static inline __u64 NFS_FILEID(const struct inode *inode)
{
return NFS_I(inode)->fileid;