#include <asm/system.h>
#include "delegation.h"
+#include "iostat.h"
#define NFSDBG_FACILITY NFSDBG_FILE
static int nfs_lock(struct file *filp, int cmd, struct file_lock *fl);
static int nfs_flock(struct file *filp, int cmd, struct file_lock *fl);
-struct file_operations nfs_file_operations = {
+const struct file_operations nfs_file_operations = {
.llseek = nfs_file_llseek,
.read = do_sync_read,
.write = do_sync_write,
static int
nfs_file_open(struct inode *inode, struct file *filp)
{
- struct nfs_server *server = NFS_SERVER(inode);
- int (*open)(struct inode *, struct file *);
int res;
res = nfs_check_flags(filp->f_flags);
if (res)
return res;
+ nfs_inc_stats(inode, NFSIOS_VFSOPEN);
lock_kernel();
- /* Do NFSv4 open() call */
- if ((open = server->rpc_ops->file_open) != NULL)
- res = open(inode, filp);
+ res = NFS_SERVER(inode)->rpc_ops->file_open(inode, filp);
unlock_kernel();
return res;
}
/* Ensure that dirty pages are flushed out with the right creds */
if (filp->f_mode & FMODE_WRITE)
filemap_fdatawrite(filp->f_mapping);
+ nfs_inc_stats(inode, NFSIOS_VFSRELEASE);
return NFS_PROTO(inode)->file_release(inode, filp);
}
if ((file->f_mode & FMODE_WRITE) == 0)
return 0;
+ nfs_inc_stats(inode, NFSIOS_VFSFLUSH);
lock_kernel();
/* Ensure that data+attribute caches are up to date after close() */
status = nfs_wb_all(inode);
if (!status) {
status = ctx->error;
ctx->error = 0;
- if (!status && !nfs_have_delegation(inode, FMODE_READ))
- __nfs_revalidate_inode(NFS_SERVER(inode), inode);
+ if (!status)
+ nfs_revalidate_inode(NFS_SERVER(inode), inode);
}
unlock_kernel();
return status;
(unsigned long) count, (unsigned long) pos);
result = nfs_revalidate_file(inode, iocb->ki_filp);
+ nfs_add_stats(inode, NFSIOS_NORMALREADBYTES, count);
if (!result)
result = generic_file_aio_read(iocb, buf, count, pos);
return result;
dfprintk(VFS, "nfs: fsync(%s/%ld)\n", inode->i_sb->s_id, inode->i_ino);
+ nfs_inc_stats(inode, NFSIOS_VFSFSYNC);
lock_kernel();
status = nfs_wb_all(inode);
if (!status) {
return status;
}
+static void nfs_invalidate_page(struct page *page, unsigned long offset)
+{
+ /* FIXME: we really should cancel any unstarted writes on this page */
+}
+
+static int nfs_release_page(struct page *page, gfp_t gfp)
+{
+ return !nfs_wb_page(page->mapping->host, page);
+}
+
struct address_space_operations nfs_file_aops = {
.readpage = nfs_readpage,
.readpages = nfs_readpages,
.writepages = nfs_writepages,
.prepare_write = nfs_prepare_write,
.commit_write = nfs_commit_write,
+ .invalidatepage = nfs_invalidate_page,
+ .releasepage = nfs_release_page,
#ifdef CONFIG_NFS_DIRECTIO
.direct_IO = nfs_direct_IO,
#endif
if (!count)
goto out;
+ nfs_add_stats(inode, NFSIOS_NORMALWRITTENBYTES, count);
result = generic_file_aio_write(iocb, buf, count, pos);
out:
return result;
static int do_getlk(struct file *filp, int cmd, struct file_lock *fl)
{
+ struct file_lock cfl;
struct inode *inode = filp->f_mapping->host;
int status = 0;
lock_kernel();
- /* Use local locking if mounted with "-onolock" */
- if (!(NFS_SERVER(inode)->flags & NFS_MOUNT_NONLM))
- status = NFS_PROTO(inode)->lock(filp, cmd, fl);
- else {
- struct file_lock *cfl = posix_test_lock(filp, fl);
-
- fl->fl_type = F_UNLCK;
- if (cfl != NULL)
- memcpy(fl, cfl, sizeof(*fl));
+ /* Try local locking first */
+ if (posix_test_lock(filp, fl, &cfl)) {
+ fl->fl_start = cfl.fl_start;
+ fl->fl_end = cfl.fl_end;
+ fl->fl_type = cfl.fl_type;
+ fl->fl_pid = cfl.fl_pid;
+ goto out;
}
+
+ if (nfs_have_delegation(inode, FMODE_READ))
+ goto out_noconflict;
+
+ if (NFS_SERVER(inode)->flags & NFS_MOUNT_NONLM)
+ goto out_noconflict;
+
+ status = NFS_PROTO(inode)->lock(filp, cmd, fl);
+out:
unlock_kernel();
return status;
+out_noconflict:
+ fl->fl_type = F_UNLCK;
+ goto out;
}
static int do_vfs_lock(struct file *file, struct file_lock *fl)
static int do_unlk(struct file *filp, int cmd, struct file_lock *fl)
{
struct inode *inode = filp->f_mapping->host;
- sigset_t oldset;
int status;
- rpc_clnt_sigmask(NFS_CLIENT(inode), &oldset);
/*
* Flush all pending writes before doing anything
* with locks..
*/
- filemap_fdatawrite(filp->f_mapping);
- down(&inode->i_sem);
- nfs_wb_all(inode);
- up(&inode->i_sem);
- filemap_fdatawait(filp->f_mapping);
+ nfs_sync_mapping(filp->f_mapping);
/* NOTE: special case
* If we're signalled while cleaning up locks on process exit, we
else
status = do_vfs_lock(filp, fl);
unlock_kernel();
- rpc_clnt_sigunmask(NFS_CLIENT(inode), &oldset);
return status;
}
static int do_setlk(struct file *filp, int cmd, struct file_lock *fl)
{
struct inode *inode = filp->f_mapping->host;
- sigset_t oldset;
int status;
- rpc_clnt_sigmask(NFS_CLIENT(inode), &oldset);
/*
* Flush all pending writes before doing anything
* with locks..
*/
- status = filemap_fdatawrite(filp->f_mapping);
- if (status == 0) {
- down(&inode->i_sem);
- status = nfs_wb_all(inode);
- up(&inode->i_sem);
- if (status == 0)
- status = filemap_fdatawait(filp->f_mapping);
- }
- if (status < 0)
+ status = nfs_sync_mapping(filp->f_mapping);
+ if (status != 0)
goto out;
lock_kernel();
* Make sure we clear the cache whenever we try to get the lock.
* This makes locking act as a cache coherency point.
*/
- filemap_fdatawrite(filp->f_mapping);
- down(&inode->i_sem);
- nfs_wb_all(inode); /* we may have slept */
- up(&inode->i_sem);
- filemap_fdatawait(filp->f_mapping);
+ nfs_sync_mapping(filp->f_mapping);
nfs_zap_caches(inode);
out:
- rpc_clnt_sigunmask(NFS_CLIENT(inode), &oldset);
return status;
}
inode->i_sb->s_id, inode->i_ino,
fl->fl_type, fl->fl_flags,
(long long)fl->fl_start, (long long)fl->fl_end);
-
- if (!inode)
- return -EINVAL;
+ nfs_inc_stats(inode, NFSIOS_VFSLOCK);
/* No mandatory locks over NFS */
- if ((inode->i_mode & (S_ISGID | S_IXGRP)) == S_ISGID)
+ if ((inode->i_mode & (S_ISGID | S_IXGRP)) == S_ISGID &&
+ fl->fl_type != F_UNLCK)
return -ENOLCK;
if (IS_GETLK(cmd))
*/
static int nfs_flock(struct file *filp, int cmd, struct file_lock *fl)
{
- struct inode * inode = filp->f_mapping->host;
-
dprintk("NFS: nfs_flock(f=%s/%ld, t=%x, fl=%x)\n",
- inode->i_sb->s_id, inode->i_ino,
+ filp->f_dentry->d_inode->i_sb->s_id,
+ filp->f_dentry->d_inode->i_ino,
fl->fl_type, fl->fl_flags);
- if (!inode)
- return -EINVAL;
-
/*
* No BSD flocks over NFS allowed.
* Note: we could try to fake a POSIX lock request here by