/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=8:tabstop=8:
*
- * Copyright (c) 2003 Cluster File Systems, Inc.
+ * GPL HEADER START
*
- * This file is part of Lustre, http://www.lustre.org.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * Lustre is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
*
- * Lustre is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
*
- * You should have received a copy of the GNU General Public License
- * along with Lustre; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
*
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Use is subject to license terms.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
*/
#ifndef _LINUX_COMPAT25_H
#ifdef __KERNEL__
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,5)
-#error Sorry, Lustre requires at Linux kernel version 2.6.5 or later
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,9)
+#error sorry, lustre requires at least linux kernel 2.6.9 or later
#endif
#include <libcfs/linux/portals_compat25.h>
#define ll_iattr iattr
#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,14) */
-#ifndef HAVE_SET_FS_PWD
static inline void ll_set_fs_pwd(struct fs_struct *fs, struct vfsmount *mnt,
struct dentry *dentry)
{
mntput(old_pwdmnt);
}
}
-#else
-#define ll_set_fs_pwd set_fs_pwd
-#endif /* HAVE_SET_FS_PWD */
/*
* set ATTR_BLOCKS to a high value to avoid any risk of collision with other
#if HAVE_INODE_I_MUTEX
#define UNLOCK_INODE_MUTEX(inode) do {mutex_unlock(&(inode)->i_mutex); } while(0)
#define LOCK_INODE_MUTEX(inode) do {mutex_lock(&(inode)->i_mutex); } while(0)
+#define LOCK_INODE_MUTEX_PARENT(inode) \
+do {mutex_lock_nested(&(inode)->i_mutex, I_MUTEX_PARENT); } while(0)
#define TRYLOCK_INODE_MUTEX(inode) mutex_trylock(&(inode)->i_mutex)
#else
#define UNLOCK_INODE_MUTEX(inode) do {up(&(inode)->i_sem); } while(0)
#define LOCK_INODE_MUTEX(inode) do {down(&(inode)->i_sem); } while(0)
#define TRYLOCK_INODE_MUTEX(inode) (!down_trylock(&(inode)->i_sem))
+#define LOCK_INODE_MUTEX_PARENT(inode) LOCK_INODE_MUTEX(inode)
#endif /* HAVE_INODE_I_MUTEX */
+#ifdef HAVE_SEQ_LOCK
+#define LL_SEQ_LOCK(seq) mutex_lock(&(seq)->lock)
+#define LL_SEQ_UNLOCK(seq) mutex_unlock(&(seq)->lock)
+#else
+#define LL_SEQ_LOCK(seq) down(&(seq)->sem)
+#define LL_SEQ_UNLOCK(seq) up(&(seq)->sem)
+#endif
+
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,15)
#define d_child d_u.d_child
#define d_rcu d_u.d_rcu
#endif
#define CheckWriteback(page, cmd) \
- (!(!PageWriteback(page) && cmd == OBD_BRW_WRITE))
+ ((!PageWriteback(page) && (cmd & OBD_BRW_READ)) || \
+ (PageWriteback(page) && (cmd & OBD_BRW_WRITE)))
#ifdef HAVE_PAGE_LIST
static inline int mapping_has_pages(struct address_space *mapping)
#define KIOBUF_GET_BLOCKS(k) ((k)->blocks)
#endif
+#ifdef HAVE_SECURITY_PLUG
+#define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
+ vfs_symlink(dir, dentry, mnt, path, mode)
+#else
+#ifdef HAVE_4ARGS_VFS_SYMLINK
+#define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
+ vfs_symlink(dir, dentry, path, mode)
+#else
+#define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
+ vfs_symlink(dir, dentry, path)
+#endif
+#endif
+
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,7))
#define ll_set_dflags(dentry, flags) do { dentry->d_vfs_flags |= flags; } while(0)
-#define ll_vfs_symlink(dir, dentry, path, mode) vfs_symlink(dir, dentry, path)
#else
#define ll_set_dflags(dentry, flags) do { \
spin_lock(&dentry->d_lock); \
dentry->d_flags |= flags; \
spin_unlock(&dentry->d_lock); \
} while(0)
-#define ll_vfs_symlink(dir, dentry, path, mode) vfs_symlink(dir, dentry, path, mode)
#endif
#ifndef container_of
#define filemap_fdatawrite(mapping) filemap_fdatasync(mapping)
#endif
+#include <linux/mpage.h> /* for generic_writepages */
+#ifndef HAVE_FILEMAP_FDATAWRITE_RANGE
+#include <linux/backing-dev.h> /* for mapping->backing_dev_info */
+static inline int filemap_fdatawrite_range(struct address_space *mapping,
+ loff_t start, loff_t end)
+{
+ int rc;
+ struct writeback_control wbc = {
+ .sync_mode = WB_SYNC_ALL,
+ .nr_to_write = (end - start + PAGE_SIZE - 1) >> PAGE_SHIFT,
+ };
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,18)
+ wbc.range_start = start;
+ wbc.range_end = end;
+#else
+ wbc.start = start;
+ wbc.end = end;
+#endif
+
+#ifdef mapping_cap_writeback_dirty
+ if (!mapping_cap_writeback_dirty(mapping))
+ rc = 0;
+#else
+ if (mapping->backing_dev_info->memory_backed)
+ rc = 0;
+#endif
+ /* do_writepages() */
+ else if (mapping->a_ops->writepages)
+ rc = mapping->a_ops->writepages(mapping, &wbc);
+ else
+ rc = generic_writepages(mapping, &wbc);
+ return rc;
+}
+#else
+int filemap_fdatawrite_range(struct address_space *mapping,
+ loff_t start, loff_t end);
+#endif
+
#ifdef HAVE_VFS_KERN_MOUNT
-static inline
+static inline
struct vfsmount *
ll_kern_mount(const char *fstype, int flags, const char *name, void *data)
{
#define ll_kern_mount(fstype, flags, name, data) do_kern_mount((fstype), (flags), (name), (data))
#endif
-#ifndef HAVE_GENERIC_FILE_READ
-static inline
-ssize_t
-generic_file_read(struct file *filp, char __user *buf, size_t len, loff_t *ppos)
-{
- struct iovec iov = { .iov_base = (void __user *)buf, .iov_len = len };
- struct kiocb kiocb;
- ssize_t ret;
-
- init_sync_kiocb(&kiocb, filp);
- kiocb.ki_pos = *ppos;
- kiocb.ki_left = len;
-
- ret = generic_file_aio_read(&kiocb, &iov, 1, kiocb.ki_pos);
- *ppos = kiocb.ki_pos;
- return ret;
-}
-#endif
-
-#ifndef HAVE_GENERIC_FILE_WRITE
-static inline
-ssize_t
-generic_file_write(struct file *filp, const char __user *buf, size_t len, loff_t *ppos)
-{
- struct iovec iov = { .iov_base = (void __user *)buf, .iov_len = len };
- struct kiocb kiocb;
- ssize_t ret;
-
- init_sync_kiocb(&kiocb, filp);
- kiocb.ki_pos = *ppos;
- kiocb.ki_left = len;
-
- ret = generic_file_aio_write(&kiocb, &iov, 1, kiocb.ki_pos);
- *ppos = kiocb.ki_pos;
-
- return ret;
-}
-#endif
-
#ifdef HAVE_STATFS_DENTRY_PARAM
#define ll_do_statfs(sb, sfs) (sb)->s_op->statfs((sb)->s_root, (sfs))
#else
#endif
#ifdef HAVE_RW_TREE_LOCK
-#define TREE_READ_LOCK_IRQ(mapping) read_lock_irq(&(mapping)->tree_lock)
+#define TREE_READ_LOCK_IRQ(mapping) read_lock_irq(&(mapping)->tree_lock)
#define TREE_READ_UNLOCK_IRQ(mapping) read_unlock_irq(&(mapping)->tree_lock)
#else
#define TREE_READ_LOCK_IRQ(mapping) spin_lock_irq(&(mapping)->tree_lock)
#ifdef HAVE_UNREGISTER_BLKDEV_RETURN_INT
#define ll_unregister_blkdev(a,b) unregister_blkdev((a),(b))
#else
-static inline
+static inline
int ll_unregister_blkdev(unsigned int dev, const char *name)
{
unregister_blkdev(dev, name);
#define ll_inode_blksize(a) (1<<(a)->i_blkbits)
#endif
-#ifndef HAVE_EXPORT_NR_FREE_BUFFER_PAGES
-static inline unsigned int ll_nr_free_buffer_pages(void)
-{
- struct sysinfo si;
-
- si_meminfo(&si);
- return (unsigned int)(si.freeram - si.freehigh);
-}
-#else
-#define ll_nr_free_buffer_pages() nr_free_buffer_pages()
-#endif
-
#ifdef HAVE_FS_RENAME_DOES_D_MOVE
-#define LL_RENAME_DOES_D_MOVE FS_RENAME_DOES_D_MOVE
+#define LL_RENAME_DOES_D_MOVE FS_RENAME_DOES_D_MOVE
#else
-#define LL_RENAME_DOES_D_MOVE FS_ODD_RENAME
+#define LL_RENAME_DOES_D_MOVE FS_ODD_RENAME
#endif
/* add a lustre compatible layer for crypto API */
return crypto_hash_digest(&desc, sg, size, result);
}
static inline
-unsigned int crypto_tfm_alg_max_keysize(struct crypto_blkcipher *tfm)
+unsigned int ll_crypto_tfm_alg_max_keysize(struct crypto_blkcipher *tfm)
{
return crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher.max_keysize;
}
static inline
-unsigned int crypto_tfm_alg_min_keysize(struct crypto_blkcipher *tfm)
+unsigned int ll_crypto_tfm_alg_min_keysize(struct crypto_blkcipher *tfm)
{
return crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher.min_keysize;
}
#include <linux/scatterlist.h>
#define ll_crypto_hash crypto_tfm
#define ll_crypto_cipher crypto_tfm
+#ifndef HAVE_STRUCT_HASH_DESC
struct hash_desc {
struct ll_crypto_hash *tfm;
u32 flags;
};
+#endif
+#ifndef HAVE_STRUCT_BLKCIPHER_DESC
struct blkcipher_desc {
struct ll_crypto_cipher *tfm;
void *info;
u32 flags;
};
+#endif
#define ll_crypto_blkcipher_setkey(tfm, key, keylen) \
crypto_cipher_setkey(tfm, key, keylen)
#define ll_crypto_blkcipher_set_iv(tfm, src, len) \
#define ll_crypto_blkcipher_encrypt_iv(desc, dst, src, bytes) \
crypto_cipher_encrypt_iv((desc)->tfm, dst, src, bytes, (desc)->info)
-extern struct ll_crypto_cipher *ll_crypto_alloc_blkcipher(
- const char * algname, u32 type, u32 mask);
-static inline
+static inline
+struct ll_crypto_cipher *ll_crypto_alloc_blkcipher(const char * algname,
+ u32 type, u32 mask)
+{
+ char buf[CRYPTO_MAX_ALG_NAME + 1];
+ const char *pan = algname;
+ u32 flag = 0;
+
+ if (strncmp("cbc(", algname, 4) == 0)
+ flag |= CRYPTO_TFM_MODE_CBC;
+ else if (strncmp("ecb(", algname, 4) == 0)
+ flag |= CRYPTO_TFM_MODE_ECB;
+ if (flag) {
+ char *vp = strnchr(algname, CRYPTO_MAX_ALG_NAME, ')');
+ if (vp) {
+ memcpy(buf, algname + 4, vp - algname - 4);
+ buf[vp - algname - 4] = '\0';
+ pan = buf;
+ } else {
+ flag = 0;
+ }
+ }
+ return crypto_alloc_tfm(pan, flag);
+}
+
+static inline
struct ll_crypto_hash *ll_crypto_alloc_hash(const char *alg, u32 type, u32 mask)
{
char buf[CRYPTO_MAX_ALG_NAME + 1];
{
struct scatterlist *sl = sg;
unsigned int count;
- /*
+ /*
* This way is very weakness. We must ensure that
* the sum of sg[0..i]->length isn't greater than nbytes.
- * In the upstream kernel the crypto_hash_update() also
+ * In the upstream kernel the crypto_hash_update() also
* via the nbytes computed the count of sg[...].
* The old style is more safely. but it gone.
*/
#define ll_crypto_hash_blocksize(tfm) crypto_tfm_alg_blocksize(tfm)
#define ll_crypto_free_hash(tfm) crypto_free_tfm(tfm)
#define ll_crypto_free_blkcipher(tfm) crypto_free_tfm(tfm)
+#define ll_crypto_tfm_alg_min_keysize crypto_tfm_alg_min_keysize
+#define ll_crypto_tfm_alg_max_keysize crypto_tfm_alg_max_keysize
#endif /* HAVE_ASYNC_BLOCK_CIPHER */
+#ifndef HAVE_SYNCHRONIZE_RCU
+#define synchronize_rcu() synchronize_kernel()
+#endif
+
+#ifdef HAVE_SECURITY_PLUG
+#define ll_remove_suid(inode,mnt) remove_suid(inode,mnt)
+#define ll_vfs_rmdir(dir,entry,mnt) vfs_rmdir(dir,entry,mnt)
+#define ll_vfs_mkdir(inode,dir,mnt,mode) vfs_mkdir(inode,dir,mnt,mode)
+#define ll_vfs_link(old,mnt,dir,new,mnt1) vfs_link(old,mnt,dir,new,mnt1)
+#define ll_vfs_unlink(inode,entry,mnt) vfs_unlink(inode,entry,mnt)
+#define ll_vfs_mknod(dir,entry,mnt,mode,dev) \
+ vfs_mknod(dir,entry,mnt,mode,dev)
+#define ll_security_inode_unlink(dir,entry,mnt) \
+ security_inode_unlink(dir,entry,mnt)
+#define ll_vfs_rename(old,old_dir,mnt,new,new_dir,mnt1) \
+ vfs_rename(old,old_dir,mnt,new,new_dir,mnt1)
+#else
+#define ll_remove_suid(inode,mnt) remove_suid(inode)
+#define ll_vfs_rmdir(dir,entry,mnt) vfs_rmdir(dir,entry)
+#define ll_vfs_mkdir(inode,dir,mnt,mode) vfs_mkdir(inode,dir,mode)
+#define ll_vfs_link(old,mnt,dir,new,mnt1) vfs_link(old,dir,new)
+#define ll_vfs_unlink(inode,entry,mnt) vfs_unlink(inode,entry)
+#define ll_vfs_mknod(dir,entry,mnt,mode,dev) vfs_mknod(dir,entry,mode,dev)
+#define ll_security_inode_unlink(dir,entry,mnt) security_inode_unlink(dir,entry)
+#define ll_vfs_rename(old,old_dir,mnt,new,new_dir,mnt1) \
+ vfs_rename(old,old_dir,new,new_dir)
+#endif
+
+#ifndef for_each_possible_cpu
+#define for_each_possible_cpu(i) for_each_cpu(i)
+#endif
+
+#ifndef cpu_to_node
+#define cpu_to_node(cpu) 0
+#endif
+
+#ifndef abs
+static inline int abs(int x)
+{
+ return (x < 0) ? -x : x;
+}
+#endif
+
+#ifndef labs
+static inline long labs(long x)
+{
+ return (x < 0) ? -x : x;
+}
+#endif
+
+/* Using kernel fls(). Userspace will use one defined in user-bitops.h. */
+#ifndef __fls
+#define __fls fls
+#endif
+
+#ifdef HAVE_INVALIDATE_INODE_PAGES
+#define invalidate_mapping_pages(mapping,s,e) invalidate_inode_pages(mapping)
+#endif
+
+#ifdef HAVE_INODE_IPRIVATE
+#define INODE_PRIVATE_DATA(inode) ((inode)->i_private)
+#else
+#define INODE_PRIVATE_DATA(inode) ((inode)->u.generic_ip)
+#endif
+
+#ifndef SLAB_DESTROY_BY_RCU
+#define SLAB_DESTROY_BY_RCU 0
+#endif
+
#endif /* __KERNEL__ */
#endif /* _COMPAT25_H */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff