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"
#include "h/smp_lock.h"
#endif
-#define __NO_VERSION__ /* don't define kernel_version in module.h */
-#include <linux/module.h>
-
struct vcache *afs_globalVp = 0;
struct vfs *afs_globalVFS = 0;
#if defined(AFS_LINUX24_ENV)
-struct nameidata afs_cacheNd;
+struct vfsmount *afs_cacheMnt;
#endif
int afs_was_mounted = 0; /* Used to force reload if mount/unmount/mount */
/* Forward declarations */
static void iattr2vattr(struct vattr *vattrp, struct iattr *iattrp);
-static void update_inode_cache(struct inode *ip, struct vattr *vp);
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);
static struct super_block *afs_get_sb(struct file_system_type *fs_type, int flags, const char *dev_name, void *data);
-void put_inode_on_dummy_list(struct inode *ip);
/* afs_file_system
* VFS entry for Linux - installed in init_module
sb->s_magic = AFS_VFSMAGIC;
sb->s_op = &afs_sops; /* Super block (vfs) ops */
#if defined(MAX_NON_LFS)
+#ifdef AFS_64BIT_CLIENT
+#if !defined(MAX_LFS_FILESIZE)
+#if BITS_PER_LONG==32
+#define MAX_LFS_FILESIZE (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1)
+#elif BITS_PER_LONG==64
+#define MAX_LFS_FILESIZE 0x7fffffffffffffff
+#endif
+#endif
+ sb->s_maxbytes = MAX_LFS_FILESIZE;
+#else
sb->s_maxbytes = MAX_NON_LFS;
#endif
+#endif
code = afs_root(sb);
- if (code)
+ if (code) {
+ afs_globalVFS = NULL;
#if defined(AFS_LINUX26_ENV)
- module_put(THIS_MODULE);
+ module_put(THIS_MODULE);
#else
- MOD_DEC_USE_COUNT;
+ MOD_DEC_USE_COUNT;
#endif
+ }
#if !defined(AFS_LINUX24_ENV)
unlock_super(sb);
if (!(code = afs_InitReq(&treq, credp)) && !(code = afs_CheckInit())) {
tvp = afs_GetVCache(&afs_rootFid, &treq, NULL, NULL);
if (tvp) {
- extern struct inode_operations afs_dir_iops;
-#if defined(AFS_LINUX24_ENV)
- extern struct file_operations afs_dir_fops;
-#endif
+ struct inode *ip = AFSTOV(tvp);
+ struct vattr vattr;
- /* "/afs" is a directory, reset inode ops accordingly. */
- AFSTOV(tvp)->v_op = &afs_dir_iops;
-#if defined(AFS_LINUX24_ENV)
- AFSTOV(tvp)->v_fop = &afs_dir_fops;
-#endif
+ afs_getattr(tvp, &vattr, credp);
+ afs_fill_inode(ip, &vattr);
/* setup super_block and mount point inode. */
afs_globalVp = tvp;
#if defined(AFS_LINUX24_ENV)
- afsp->s_root = d_alloc_root(AFSTOI(tvp));
+ afsp->s_root = d_alloc_root(ip);
#else
- afsp->s_root = d_alloc_root(AFSTOI(tvp), NULL);
+ afsp->s_root = d_alloc_root(ip, NULL);
#endif
afsp->s_root->d_op = &afs_dentry_operations;
} else
afs_notify_change(struct dentry *dp, struct iattr *iattrp)
{
struct vattr vattr;
- int code;
cred_t *credp = crref();
struct inode *ip = dp->d_inode;
+ int code;
- AFS_GLOCK();
-#if defined(AFS_LINUX26_ENV)
- lock_kernel();
-#endif
VATTR_NULL(&vattr);
iattr2vattr(&vattr, iattrp); /* Convert for AFS vnodeops call. */
- update_inode_cache(ip, &vattr);
- code = afs_setattr(ITOAFS(ip), &vattr, credp);
- afs_CopyOutAttrs(ITOAFS(ip), &vattr);
- /* Note that the inode may still not have all the correct info. But at
- * least we've got the newest version of what was supposed to be set.
- */
#if defined(AFS_LINUX26_ENV)
- unlock_kernel();
+ lock_kernel();
#endif
+ AFS_GLOCK();
+ code = afs_setattr(VTOAFS(ip), &vattr, credp);
+ if (!code) {
+ afs_getattr(VTOAFS(ip), &vattr, credp);
+ vattr2inode(ip, &vattr);
+ }
AFS_GUNLOCK();
+#if defined(AFS_LINUX26_ENV)
+ unlock_kernel();
+#endif
crfree(credp);
return -code;
}
-/* This list is simply used to initialize the i_list member of the
- * linux inode. This stops linux inode syncing code from choking on our
- * inodes.
- */
-static LIST_HEAD(dummy_inode_list);
+#if defined(STRUCT_SUPER_HAS_ALLOC_INODE)
+static kmem_cache_t *afs_inode_cachep;
+static struct inode *
+afs_alloc_inode(struct super_block *sb)
+{
+ struct vcache *vcp;
+
+ vcp = (struct vcache *) kmem_cache_alloc(afs_inode_cachep, SLAB_KERNEL);
+ if (!vcp)
+ return NULL;
+
+ return AFSTOV(vcp);
+}
-/* This is included for documentation only. */
-/* afs_write_inode
- * Used to flush in core inode to disk. We don't need to do this. Top level
- * write_inode() routine will clear i_dirt. If this routine is in the table,
- * it's expected to do the cleaning and clear i_dirt.
- *
- * 9/24/99: This is what we thought until we discovered msync() does end up calling
- * this function to sync a single inode to disk. msync() only flushes selective
- * pages to disk. So it needs an inode syncing function to update metadata when it
- * has synced some pages of a file to disk.
- */
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
static void
-afs_write_inode(struct inode *ip, int unused)
-#else
+afs_destroy_inode(struct inode *inode)
+{
+ kmem_cache_free(afs_inode_cachep, inode);
+}
+
static void
-afs_write_inode(struct inode *ip)
-#endif
+init_once(void * foo, kmem_cache_t * cachep, unsigned long flags)
{
- list_del(&ip->i_list);
- /* and put it back on our dummy list. */
- put_inode_on_dummy_list(ip);
+ struct vcache *vcp = (struct vcache *) foo;
- /* for now we don't actually update the metadata during msync. This
- * is just to keep linux happy. */
+ if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
+ SLAB_CTOR_CONSTRUCTOR)
+ inode_init_once(AFSTOV(vcp));
}
+int
+afs_init_inodecache(void)
+{
+#ifndef SLAB_RECLAIM_ACCOUNT
+#define SLAB_RECLAIM_ACCOUNT 0
+#endif
-static void
-afs_destroy_inode(struct inode *ip)
+ afs_inode_cachep = kmem_cache_create("afs_inode_cache",
+ sizeof(struct vcache),
+ 0, SLAB_HWCACHE_ALIGN | SLAB_RECLAIM_ACCOUNT,
+ init_once, NULL);
+ if (afs_inode_cachep == NULL)
+ return -ENOMEM;
+ return 0;
+}
+
+void
+afs_destroy_inodecache(void)
{
- ip->i_state = 0;
+ if (kmem_cache_destroy(afs_inode_cachep))
+ printk(KERN_INFO "afs_inode_cache: not all structures were freed\n");
+}
+#else
+int
+afs_init_inodecache(void)
+{
+ return 0;
}
+void
+afs_destroy_inodecache(void)
+{
+ return;
+}
+#endif
+
+static void
+afs_clear_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 || vcp->vhnext)
+ osi_Panic("inode freed while still hashed");
+
+#if !defined(STRUCT_SUPER_HAS_ALLOC_INODE)
+ afs_osi_Free(ip->u.generic_ip, sizeof(struct vcache));
+#endif
+}
/* afs_put_inode
- * called from iput when count goes to zero. Linux version of inactive.
- * For Linux 2.2, this funcionality has moved to the delete inode super op.
- * If we use the common inode pool, we'll need to set i_nlink to 0 here.
- * That will trigger the call to delete routine.
+ * Linux version of inactive. When refcount == 2, we are about to
+ * decrement to 1 and the only reference remaining should be for
+ * the VLRU
*/
static void
-afs_delete_inode(struct inode *ip)
+afs_put_inode(struct inode *ip)
{
- struct vcache *vp = ITOAFS(ip);
-
-#ifdef AFS_LINUX26_ENV
- put_inode_on_dummy_list(ip);
-#endif
+ cred_t *credp = crref();
+ struct vcache *vcp = VTOAFS(ip);
AFS_GLOCK();
- osi_clear_inode(ip);
+ ObtainReadLock(&vcp->lock);
+ if (VREFCOUNT(vcp) == 2)
+ afs_InactiveVCache(vcp, credp);
+ ReleaseReadLock(&vcp->lock);
AFS_GUNLOCK();
+ crfree(credp);
}
-
/* afs_put_super
* Called from unmount to release super_block. */
static void
afs_put_super(struct super_block *sbp)
{
- extern int afs_afs_cold_shutdown;
int code = 0;
- int fv_slept;
AFS_GLOCK();
AFS_STATCNT(afs_unmount);
afs_globalVFS = 0;
afs_globalVp = 0;
+
+ osi_linux_free_inode_pages(); /* invalidate and release remaining AFS inodes. */
afs_shutdown();
#if defined(AFS_LINUX24_ENV)
- path_release(&afs_cacheNd);
+ mntput(afs_cacheMnt);
#endif
osi_linux_verify_alloced_memory();
- done:
AFS_GUNLOCK();
if (!code) {
#endif
{
#if !defined(AFS_LINUX24_ENV)
- struct statfs stat;
+ struct statfs stat, *statp;
if (size < sizeof(struct statfs))
return;
}
struct super_operations afs_sops = {
-#if defined(AFS_LINUX26_ENV)
- .drop_inode = generic_delete_inode,
+#if defined(STRUCT_SUPER_HAS_ALLOC_INODE)
+ .alloc_inode = afs_alloc_inode,
.destroy_inode = afs_destroy_inode,
#endif
- .delete_inode = afs_delete_inode,
- .write_inode = afs_write_inode,
+ .clear_inode = afs_clear_inode,
+ .put_inode = afs_put_inode,
.put_super = afs_put_super,
.statfs = afs_statfs,
.umount_begin = afs_umount_begin
}
}
-/* update_inode_cache
- * Update inode with info from vattr struct. Use va_mask to determine what
- * to update.
- */
-static void
-update_inode_cache(struct inode *ip, struct vattr *vp)
-{
- if (vp->va_mask & ATTR_MODE)
- ip->i_mode = vp->va_mode;
- if (vp->va_mask & ATTR_UID)
- ip->i_uid = vp->va_uid;
- if (vp->va_mask & ATTR_GID)
- ip->i_gid = vp->va_gid;
- if (vp->va_mask & ATTR_SIZE)
- ip->i_size = vp->va_size;
- if (vp->va_mask & ATTR_ATIME)
-#if defined(AFS_LINUX26_ENV)
- ip->i_atime.tv_sec = vp->va_atime.tv_sec;
-#else
- ip->i_atime = vp->va_atime.tv_sec;
-#endif
- if (vp->va_mask & ATTR_MTIME)
-#if defined(AFS_LINUX26_ENV)
- ip->i_mtime.tv_sec = vp->va_mtime.tv_sec;
-#else
- ip->i_mtime = vp->va_mtime.tv_sec;
-#endif
- if (vp->va_mask & ATTR_CTIME)
-#if defined(AFS_LINUX26_ENV)
- ip->i_ctime.tv_sec = vp->va_ctime.tv_sec;
-#else
- ip->i_ctime = vp->va_ctime.tv_sec;
-#endif
-}
-
/* vattr2inode
* Rewrite the inode cache from the attr. Assumes all vattr fields are valid.
*/
ip->i_ctime = vp->va_ctime.tv_sec;
#endif
}
-
-/* Put this afs inode on our own dummy list. Linux expects to see inodes
- * nicely strung up in lists. Linux inode syncing code chokes on our inodes if
- * they're not on any lists.
- */
-void
-put_inode_on_dummy_list(struct inode *ip)
-{
- /* Initialize list. See explanation above. */
- list_add(&ip->i_list, &dummy_inode_list);
-}
-
-/* And yet another routine to update the inode cache - called from ProcessFS */
-void
-vcache2inode(struct vcache *avc)
-{
- struct vattr vattr;
-
- VATTR_NULL(&vattr);
- afs_CopyOutAttrs(avc, &vattr); /* calls vattr2inode */
-}
-
-/* Yet another one for fakestat'ed mountpoints */
-void
-vcache2fakeinode(struct vcache *rootvp, struct vcache *mpvp)
-{
- struct vattr vattr;
-
- VATTR_NULL(&vattr);
- afs_CopyOutAttrs(rootvp, &vattr);
- vattr2inode(AFSTOI(mpvp), &vattr);
-}
git://git.openafs.org / openafs.git / blobdiff