#include "afs/sysincludes.h"
#include "afsincludes.h"
#include "afs/afs_stats.h"
-#include <linux/smp_lock.h>
#include "osi_compat.h"
extern struct dentry_operations afs_dentry_operations;
/* Forward declarations */
-static void iattr2vattr(struct vattr *vattrp, struct iattr *iattrp);
static int afs_root(struct super_block *afsp);
-struct super_block *afs_read_super(struct super_block *sb, void *data, int silent);
int afs_fill_super(struct super_block *sb, void *data, int silent);
-/* afs_file_system
- * VFS entry for Linux - installed in init_module
- * Linux mounts file systems by:
- * 1) register_filesystem(&afs_file_system) - done in init_module
- * 2) Mount call comes to us via do_mount -> read_super -> afs_read_super.
- * We are expected to setup the super_block. See afs_read_super.
- */
-
-/* afs_read_super
- * read the "super block" for AFS - roughly eguivalent to struct vfs.
- * dev, covered, s_rd_only, s_dirt, and s_type will be set by read_super.
+/*
+ * afs_mount (2.6.37+) and afs_get_sb (2.6.36-) are the entry
+ * points from the vfs when mounting afs. The super block
+ * structure is setup in the afs_fill_super callback function.
*/
-#ifdef GET_SB_HAS_STRUCT_VFSMOUNT
+
+#if defined(STRUCT_FILE_SYSTEM_TYPE_HAS_MOUNT)
+static struct dentry *
+afs_mount(struct file_system_type *fs_type, int flags,
+ const char *dev_name, void *data) {
+ return mount_nodev(fs_type, flags, data, afs_fill_super);
+}
+#elif defined(GET_SB_HAS_STRUCT_VFSMOUNT)
static int
afs_get_sb(struct file_system_type *fs_type, int flags,
const char *dev_name, void *data, struct vfsmount *mnt) {
return get_sb_nodev(fs_type, flags, data, afs_fill_super, mnt);
}
#else
-static struct superblock *
+static struct super_block *
afs_get_sb(struct file_system_type *fs_type, int flags,
const char *dev_name, void *data) {
return get_sb_nodev(fs_type, flags, data, afs_fill_super);
struct file_system_type afs_fs_type = {
.owner = THIS_MODULE,
.name = "afs",
+#if defined(STRUCT_FILE_SYSTEM_TYPE_HAS_MOUNT)
+ .mount = afs_mount,
+#else
.get_sb = afs_get_sb,
+#endif
.kill_sb = kill_anon_super,
.fs_flags = FS_BINARY_MOUNTDATA,
};
sb->s_blocksize_bits = 10;
sb->s_magic = AFS_VFSMAGIC;
sb->s_op = &afs_sops; /* Super block (vfs) ops */
+
+#if defined(STRUCT_SUPER_BLOCK_HAS_S_D_OP)
+ sb->s_d_op = &afs_dentry_operations;
+#endif
+
/* used for inodes backing_dev_info field, also */
- afs_backing_dev_info = osi_Alloc(sizeof(struct backing_dev_info));
+ afs_backing_dev_info = kzalloc(sizeof(struct backing_dev_info), GFP_NOFS);
#if defined(HAVE_LINUX_BDI_INIT)
bdi_init(afs_backing_dev_info);
#endif
-#if defined(STRUCT_BDI_HAS_NAME)
+#if defined(STRUCT_BACKING_DEV_INFO_HAS_NAME)
afs_backing_dev_info->name = "openafs";
#endif
afs_backing_dev_info->ra_pages = 32;
code = afs_root(sb);
if (code) {
afs_globalVFS = NULL;
- osi_linux_free_inode_pages();
+ afs_FlushAllVCaches();
+#if defined(HAVE_LINUX_BDI_INIT)
+ bdi_destroy(afs_backing_dev_info);
+#endif
+ kfree(afs_backing_dev_info);
module_put(THIS_MODULE);
}
static int
afs_root(struct super_block *afsp)
{
- register afs_int32 code = 0;
+ afs_int32 code = 0;
struct vrequest treq;
- register struct vcache *tvp = 0;
+ struct vcache *tvp = 0;
AFS_STATCNT(afs_root);
if (afs_globalVp && (afs_globalVp->f.states & CStatd)) {
/* setup super_block and mount point inode. */
afs_globalVp = tvp;
+#if defined(HAVE_LINUX_D_MAKE_ROOT)
+ afsp->s_root = d_make_root(ip);
+#else
afsp->s_root = d_alloc_root(ip);
+#endif
+#if !defined(STRUCT_SUPER_BLOCK_HAS_S_D_OP)
afsp->s_root->d_op = &afs_dentry_operations;
+#endif
} else
code = ENOENT;
}
/* super_operations */
-/* afs_notify_change
- * Linux version of setattr call. What to change is in the iattr struct.
- * We need to set bits in both the Linux inode as well as the vcache.
- */
-int
-afs_notify_change(struct dentry *dp, struct iattr *iattrp)
-{
- struct vattr vattr;
- cred_t *credp = crref();
- struct inode *ip = dp->d_inode;
- int code;
-
- VATTR_NULL(&vattr);
- iattr2vattr(&vattr, iattrp); /* Convert for AFS vnodeops call. */
-
- lock_kernel();
- AFS_GLOCK();
- code = afs_setattr(VTOAFS(ip), &vattr, credp);
- if (!code) {
- afs_getattr(VTOAFS(ip), &vattr, credp);
- vattr2inode(ip, &vattr);
- }
- AFS_GUNLOCK();
- unlock_kernel();
- crfree(credp);
- return -code;
-}
-
-
-#if defined(STRUCT_SUPER_HAS_ALLOC_INODE)
+#if defined(STRUCT_SUPER_OPERATIONS_HAS_ALLOC_INODE)
static afs_kmem_cache_t *afs_inode_cachep;
static struct inode *
}
#endif
+#if defined(STRUCT_SUPER_OPERATIONS_HAS_EVICT_INODE)
+static void
+afs_evict_inode(struct inode *ip)
+{
+ struct vcache *vcp = VTOAFS(ip);
+
+ if (vcp->vlruq.prev || vcp->vlruq.next)
+ osi_Panic("inode freed while on LRU");
+ if (vcp->hnext)
+ osi_Panic("inode freed while still hashed");
+
+ truncate_inode_pages(&ip->i_data, 0);
+#if defined(HAVE_LINUX_CLEAR_INODE)
+ clear_inode(ip);
+#else
+ end_writeback(ip);
+#endif
+
+#if !defined(STRUCT_SUPER_OPERATIONS_HAS_ALLOC_INODE)
+ afs_osi_Free(ip->u.generic_ip, sizeof(struct vcache));
+#endif
+}
+#else
static void
afs_clear_inode(struct inode *ip)
{
if (vcp->hnext)
osi_Panic("inode freed while still hashed");
-#if !defined(STRUCT_SUPER_HAS_ALLOC_INODE)
+#if !defined(STRUCT_SUPER_OPERATIONS_HAS_ALLOC_INODE)
afs_osi_Free(ip->u.generic_ip, sizeof(struct vcache));
#endif
}
+#endif
/* afs_put_super
* Called from unmount to release super_block. */
afs_globalVFS = 0;
afs_globalVp = 0;
- osi_linux_free_inode_pages(); /* invalidate and release remaining AFS inodes. */
afs_shutdown();
mntput(afs_cacheMnt);
#if defined(HAVE_LINUX_BDI_INIT)
bdi_destroy(afs_backing_dev_info);
#endif
- osi_Free(afs_backing_dev_info, sizeof(struct backing_dev_info));
+ kfree(afs_backing_dev_info);
AFS_GUNLOCK();
sbp->s_dev = 0;
}
struct super_operations afs_sops = {
-#if defined(STRUCT_SUPER_HAS_ALLOC_INODE)
+#if defined(STRUCT_SUPER_OPERATIONS_HAS_ALLOC_INODE)
.alloc_inode = afs_alloc_inode,
.destroy_inode = afs_destroy_inode,
#endif
+#if defined(STRUCT_SUPER_OPERATIONS_HAS_EVICT_INODE)
+ .evict_inode = afs_evict_inode,
+#else
.clear_inode = afs_clear_inode,
+#endif
.put_super = afs_put_super,
.statfs = afs_statfs,
};
-
-/************** Support routines ************************/
-
-/* vattr_setattr
- * Set iattr data into vattr. Assume vattr cleared before call.
- */
-static void
-iattr2vattr(struct vattr *vattrp, struct iattr *iattrp)
-{
- vattrp->va_mask = iattrp->ia_valid;
- if (iattrp->ia_valid & ATTR_MODE)
- vattrp->va_mode = iattrp->ia_mode;
- if (iattrp->ia_valid & ATTR_UID)
- vattrp->va_uid = iattrp->ia_uid;
- if (iattrp->ia_valid & ATTR_GID)
- vattrp->va_gid = iattrp->ia_gid;
- if (iattrp->ia_valid & ATTR_SIZE)
- vattrp->va_size = iattrp->ia_size;
- if (iattrp->ia_valid & ATTR_ATIME) {
- vattrp->va_atime.tv_sec = iattrp->ia_atime.tv_sec;
- vattrp->va_atime.tv_usec = 0;
- }
- if (iattrp->ia_valid & ATTR_MTIME) {
- vattrp->va_mtime.tv_sec = iattrp->ia_mtime.tv_sec;
- vattrp->va_mtime.tv_usec = 0;
- }
- if (iattrp->ia_valid & ATTR_CTIME) {
- vattrp->va_ctime.tv_sec = iattrp->ia_ctime.tv_sec;
- vattrp->va_ctime.tv_usec = 0;
- }
-}
-
-/* vattr2inode
- * Rewrite the inode cache from the attr. Assumes all vattr fields are valid.
- */
-void
-vattr2inode(struct inode *ip, struct vattr *vp)
-{
- ip->i_ino = vp->va_nodeid;
- ip->i_nlink = vp->va_nlink;
- ip->i_blocks = vp->va_blocks;
-#ifdef STRUCT_INODE_HAS_I_BLKBITS
- ip->i_blkbits = AFS_BLKBITS;
-#endif
-#ifdef STRUCT_INODE_HAS_I_BLKSIZE
- ip->i_blksize = vp->va_blocksize;
-#endif
- ip->i_rdev = vp->va_rdev;
- ip->i_mode = vp->va_mode;
- ip->i_uid = vp->va_uid;
- ip->i_gid = vp->va_gid;
- i_size_write(ip, vp->va_size);
- ip->i_atime.tv_sec = vp->va_atime.tv_sec;
- ip->i_atime.tv_nsec = 0;
- ip->i_mtime.tv_sec = vp->va_mtime.tv_sec;
- /* Set the mtime nanoseconds to the sysname generation number.
- * This convinces NFS clients that all directories have changed
- * any time the sysname list changes.
- */
- ip->i_mtime.tv_nsec = afs_sysnamegen;
- ip->i_ctime.tv_sec = vp->va_ctime.tv_sec;
- ip->i_ctime.tv_nsec = 0;
-}
-
-/* osi_linux_free_inode_pages
- *
- * Free all vnodes remaining in the afs hash. Must be done before
- * shutting down afs and freeing all memory.
- */
-void
-osi_linux_free_inode_pages(void)
-{
- int i;
- struct vcache *tvc, *nvc;
- extern struct vcache *afs_vhashT[VCSIZE];
-
- for (i = 0; i < VCSIZE; i++) {
- for (tvc = afs_vhashT[i]; tvc; ) {
- int slept;
-
- nvc = tvc->hnext;
- if (afs_FlushVCache(tvc, &slept)) /* slept always 0 for linux? */
- printf("Failed to invalidate all pages on inode 0x%p\n", tvc);
- tvc = nvc;
- }
- }
-}
git://git.openafs.org / openafs.git / blobdiff