#include <afsconfig.h>
#include "afs/param.h"
-RCSID
- ("$Header$");
#define __NO_VERSION__ /* don't define kernel_version in module.h */
#include <linux/module.h> /* early to avoid printf->printk mapping */
#include "afs/sysincludes.h"
#include "afsincludes.h"
#include "afs/afs_stats.h"
-#if !defined(AFS_LINUX26_ENV)
-#include "h/locks.h"
-#endif
-#if defined(AFS_LINUX24_ENV)
-#include "h/smp_lock.h"
-#endif
+#include "osi_compat.h"
struct vcache *afs_globalVp = 0;
struct vfs *afs_globalVFS = 0;
-#if defined(AFS_LINUX24_ENV)
struct vfsmount *afs_cacheMnt;
-#endif
int afs_was_mounted = 0; /* Used to force reload if mount/unmount/mount */
extern struct super_operations afs_sops;
-#if defined(AFS_LINUX26_ENV) && !defined(AFS_NONFSTRANS)
+#if !defined(AFS_NONFSTRANS)
extern struct export_operations afs_export_ops;
#endif
extern afs_rwlock_t afs_xvcache;
/* 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.
*/
-#if defined(AFS_LINUX26_ENV)
-#ifdef GET_SB_HAS_STRUCT_VFSMOUNT
-int
-afs_get_sb(struct file_system_type *fs_type, int flags,
- const char *dev_name, void *data, struct vfsmount *mnt)
-#else
-static struct superblock *
+
+#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)
-#endif
-{
-#ifdef GET_SB_HAS_STRUCT_VFSMOUNT
+ const char *dev_name, void *data, struct vfsmount *mnt) {
return get_sb_nodev(fs_type, flags, data, afs_fill_super, mnt);
+}
#else
+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);
-#endif
}
-
+#endif
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,
};
-#elif defined(AFS_LINUX24_ENV)
-DECLARE_FSTYPE(afs_fs_type, "afs", afs_read_super, 0);
-#else
-struct file_system_type afs_fs_type = {
- "afs", /* name - used by mount operation. */
- 0, /* requires_dev - no for network filesystems. mount() will
- * pass us an "unnamed" device. */
- afs_read_super, /* wrapper to afs_mount */
- NULL /* pointer to next file_system_type once registered. */
-};
-#endif
-#if defined(AFS_LINUX26_ENV)
-struct backing_dev_info afs_backing_dev_info = {
- .ra_pages = 0, /* disable readahead, afs does prefetch */
-};
+struct backing_dev_info *afs_backing_dev_info;
int
afs_fill_super(struct super_block *sb, void *data, int silent)
-#else
-struct super_block *
-afs_read_super(struct super_block *sb, void *data, int silent)
-#endif
{
int code = 0;
printf
("You must reload the AFS kernel extensions before remounting AFS.\n");
AFS_GUNLOCK();
-#if defined(AFS_LINUX26_ENV)
return -EINVAL;
-#else
- return NULL;
-#endif
}
afs_was_mounted = 1;
/* Set basics of super_block */
-#if !defined(AFS_LINUX24_ENV)
- lock_super(sb);
-#endif
-#if defined(AFS_LINUX26_ENV)
__module_get(THIS_MODULE);
-#else
- MOD_INC_USE_COUNT;
-#endif
afs_globalVFS = sb;
+ sb->s_flags |= MS_NOATIME;
sb->s_blocksize = 1024;
sb->s_blocksize_bits = 10;
sb->s_magic = AFS_VFSMAGIC;
sb->s_op = &afs_sops; /* Super block (vfs) ops */
-#if defined(HAVE_BDI_INIT)
- bdi_init(&afs_backing_dev_info);
+
+#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 = kmalloc(sizeof(struct backing_dev_info), GFP_NOFS);
+#if defined(HAVE_LINUX_BDI_INIT)
+ bdi_init(afs_backing_dev_info);
+#endif
+#if defined(STRUCT_BACKING_DEV_INFO_HAS_NAME)
+ afs_backing_dev_info->name = "openafs";
#endif
-#if defined(AFS_LINUX26_ENV) && !defined(AFS_NONFSTRANS)
+ afs_backing_dev_info->ra_pages = 32;
+#if defined (STRUCT_SUPER_BLOCK_HAS_S_BDI)
+ sb->s_bdi = afs_backing_dev_info;
+ /* The name specified here will appear in the flushing thread name - flush-afs */
+ bdi_register(afs_backing_dev_info, NULL, "afs");
+#endif
+#if !defined(AFS_NONFSTRANS)
sb->s_export_op = &afs_export_ops;
#endif
#if defined(MAX_NON_LFS)
code = afs_root(sb);
if (code) {
afs_globalVFS = NULL;
-#if defined(AFS_LINUX26_ENV)
+ afs_FlushAllVCaches();
module_put(THIS_MODULE);
-#else
- MOD_DEC_USE_COUNT;
-#endif
}
-#if !defined(AFS_LINUX24_ENV)
- unlock_super(sb);
-#endif
-
AFS_GUNLOCK();
-#if defined(AFS_LINUX26_ENV)
return code ? -EINVAL : 0;
-#else
- return code ? NULL : sb;
-#endif
}
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->states & CStatd)) {
+ if (afs_globalVp && (afs_globalVp->f.states & CStatd)) {
tvp = afs_globalVp;
} else {
cred_t *credp = crref();
/* setup super_block and mount point inode. */
afs_globalVp = tvp;
-#if defined(AFS_LINUX24_ENV)
afsp->s_root = d_alloc_root(ip);
-#else
- afsp->s_root = d_alloc_root(ip, NULL);
-#endif
+#if !defined(STRUCT_SUPER_BLOCK_HAS_S_D_OP)
afsp->s_root->d_op = &afs_dentry_operations;
+#endif
} else
code = ENOENT;
}
VATTR_NULL(&vattr);
iattr2vattr(&vattr, iattrp); /* Convert for AFS vnodeops call. */
-#if defined(AFS_LINUX26_ENV)
- lock_kernel();
-#endif
AFS_GLOCK();
code = afs_setattr(VTOAFS(ip), &vattr, credp);
if (!code) {
vattr2inode(ip, &vattr);
}
AFS_GUNLOCK();
-#if defined(AFS_LINUX26_ENV)
- unlock_kernel();
-#endif
crfree(credp);
return -code;
}
-#if defined(STRUCT_SUPER_HAS_ALLOC_INODE)
-#if defined(HAVE_KMEM_CACHE_T)
-static kmem_cache_t *afs_inode_cachep;
-#else
-struct kmem_cache *afs_inode_cachep;
-#endif
+#if defined(STRUCT_SUPER_OPERATIONS_HAS_ALLOC_INODE)
+static afs_kmem_cache_t *afs_inode_cachep;
static struct inode *
afs_alloc_inode(struct super_block *sb)
{
struct vcache *vcp;
-#if defined(SLAB_KERNEL)
- vcp = (struct vcache *) kmem_cache_alloc(afs_inode_cachep, SLAB_KERNEL);
-#else
- vcp = (struct vcache *) kmem_cache_alloc(afs_inode_cachep, GFP_KERNEL);
-#endif
+ vcp = (struct vcache *) kmem_cache_alloc(afs_inode_cachep, KALLOC_TYPE);
if (!vcp)
return NULL;
kmem_cache_free(afs_inode_cachep, inode);
}
-static void
-#if defined(HAVE_KMEM_CACHE_T)
-init_once(void * foo, kmem_cache_t * cachep, unsigned long flags)
-#else
-#if defined(KMEM_CACHE_INIT)
-init_once(struct kmem_cache * cachep, void * foo)
-#else
-init_once(void * foo, struct kmem_cache * cachep, unsigned long flags)
-#endif
-#endif
+void
+init_once(void * foo)
{
struct vcache *vcp = (struct vcache *) foo;
-#if defined(SLAB_CTOR_VERIFY)
- if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
- SLAB_CTOR_CONSTRUCTOR)
-#endif
- inode_init_once(AFSTOV(vcp));
+ inode_init_once(AFSTOV(vcp));
}
int
afs_init_inodecache(void)
{
-#ifndef SLAB_RECLAIM_ACCOUNT
-#define SLAB_RECLAIM_ACCOUNT 0
-#endif
-
#if defined(KMEM_CACHE_TAKES_DTOR)
afs_inode_cachep = kmem_cache_create("afs_inode_cache",
- sizeof(struct vcache),
- 0, SLAB_HWCACHE_ALIGN | SLAB_RECLAIM_ACCOUNT,
- init_once, NULL);
+ sizeof(struct vcache), 0,
+ SLAB_HWCACHE_ALIGN | SLAB_RECLAIM_ACCOUNT, init_once_func, NULL);
#else
afs_inode_cachep = kmem_cache_create("afs_inode_cache",
- sizeof(struct vcache),
- 0, SLAB_HWCACHE_ALIGN | SLAB_RECLAIM_ACCOUNT,
- init_once);
+ sizeof(struct vcache), 0,
+ SLAB_HWCACHE_ALIGN | SLAB_RECLAIM_ACCOUNT, init_once_func);
#endif
if (afs_inode_cachep == NULL)
return -ENOMEM;
}
#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);
+ end_writeback(ip);
+
+#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_GLOCK();
AFS_STATCNT(afs_unmount);
-#if !defined(AFS_LINUX26_ENV)
- if (!suser()) {
- AFS_GUNLOCK();
- return;
- }
-#endif
-
afs_globalVFS = 0;
afs_globalVp = 0;
- osi_linux_free_inode_pages(); /* invalidate and release remaining AFS inodes. */
afs_shutdown();
-#if defined(AFS_LINUX24_ENV)
mntput(afs_cacheMnt);
-#endif
osi_linux_verify_alloced_memory();
-#if defined(HAVE_BDI_INIT)
- bdi_destroy(&afs_backing_dev_info);
+#if defined(HAVE_LINUX_BDI_INIT)
+ bdi_destroy(afs_backing_dev_info);
#endif
+ kfree(afs_backing_dev_info);
AFS_GUNLOCK();
sbp->s_dev = 0;
-#if defined(AFS_LINUX26_ENV)
module_put(THIS_MODULE);
-#else
- MOD_DEC_USE_COUNT;
-#endif
}
* statp is in user space, so we need to cobble together a statfs, then
* copy it.
*/
-#if defined(AFS_LINUX26_ENV)
int
#if defined(STATFS_TAKES_DENTRY)
afs_statfs(struct dentry *dentry, struct kstatfs *statp)
#else
afs_statfs(struct super_block *sbp, struct kstatfs *statp)
#endif
-#elif defined(AFS_LINUX24_ENV)
-int
-afs_statfs(struct super_block *sbp, struct statfs *statp)
-#else
-int
-afs_statfs(struct super_block *sbp, struct statfs *__statp, int size)
-#endif
{
-#if !defined(AFS_LINUX24_ENV)
- struct statfs stat, *statp;
-
- if (size < sizeof(struct statfs))
- return;
-
- memset(&stat, 0, size);
- statp = &stat;
-#else
memset(statp, 0, sizeof(*statp));
-#endif
AFS_STATCNT(afs_statfs);
statp->f_fsid.val[1] = AFS_VFSFSID;
statp->f_namelen = 256;
-#if !defined(AFS_LINUX24_ENV)
- memcpy_tofs(__statp, &stat, size);
-#endif
return 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,
-#if !defined(AFS_LINUX24_ENV)
- .notify_change = afs_notify_change,
-#endif
};
/************** Support routines ************************/
if (iattrp->ia_valid & ATTR_SIZE)
vattrp->va_size = iattrp->ia_size;
if (iattrp->ia_valid & ATTR_ATIME) {
-#if defined(AFS_LINUX26_ENV)
vattrp->va_atime.tv_sec = iattrp->ia_atime.tv_sec;
-#else
- vattrp->va_atime.tv_sec = iattrp->ia_atime;
-#endif
vattrp->va_atime.tv_usec = 0;
}
if (iattrp->ia_valid & ATTR_MTIME) {
-#if defined(AFS_LINUX26_ENV)
vattrp->va_mtime.tv_sec = iattrp->ia_mtime.tv_sec;
-#else
- vattrp->va_mtime.tv_sec = iattrp->ia_mtime;
-#endif
vattrp->va_mtime.tv_usec = 0;
}
if (iattrp->ia_valid & ATTR_CTIME) {
-#if defined(AFS_LINUX26_ENV)
vattrp->va_ctime.tv_sec = iattrp->ia_ctime.tv_sec;
-#else
- vattrp->va_ctime.tv_sec = iattrp->ia_ctime;
-#endif
vattrp->va_ctime.tv_usec = 0;
}
}
ip->i_uid = vp->va_uid;
ip->i_gid = vp->va_gid;
i_size_write(ip, vp->va_size);
-#if defined(AFS_LINUX26_ENV)
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;
ip->i_mtime.tv_nsec = afs_sysnamegen;
ip->i_ctime.tv_sec = vp->va_ctime.tv_sec;
ip->i_ctime.tv_nsec = 0;
-#else
- ip->i_atime = vp->va_atime.tv_sec;
- ip->i_mtime = vp->va_mtime.tv_sec;
- ip->i_ctime = vp->va_ctime.tv_sec;
-#endif
-}
-
-/* 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