/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- * vim:expandtab:shiftwidth=8:tabstop=8: * * Copyright (c) 2003 Cluster File Systems, Inc. * * This file is part of Lustre, http://www.lustre.org. * * 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. * * 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. * * 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. * */ #ifndef _LINUX_COMPAT25_H #define _LINUX_COMPAT25_H #ifdef __KERNEL__ #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) && LINUX_VERSION_CODE < KERNEL_VERSION(2,5,69) #error sorry, lustre requires at least 2.5.69 #endif #include #include #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,14) struct ll_iattr { struct iattr iattr; unsigned int ia_attr_flags; }; #else #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) { struct dentry *old_pwd; struct vfsmount *old_pwdmnt; write_lock(&fs->lock); old_pwd = fs->pwd; old_pwdmnt = fs->pwdmnt; fs->pwdmnt = mntget(mnt); fs->pwd = dget(dentry); write_unlock(&fs->lock); if (old_pwd) { dput(old_pwd); 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 * ATTR_* attributes (see bug 13828) */ #define ATTR_BLOCKS (1 << 27) #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 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)) #endif /* HAVE_INODE_I_MUTEX */ #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,15) #define d_child d_u.d_child #define d_rcu d_u.d_rcu #endif #ifdef HAVE_DQUOTOFF_MUTEX #define UNLOCK_DQONOFF_MUTEX(dqopt) do {mutex_unlock(&(dqopt)->dqonoff_mutex); } while(0) #define LOCK_DQONOFF_MUTEX(dqopt) do {mutex_lock(&(dqopt)->dqonoff_mutex); } while(0) #else #define UNLOCK_DQONOFF_MUTEX(dqopt) do {up(&(dqopt)->dqonoff_sem); } while(0) #define LOCK_DQONOFF_MUTEX(dqopt) do {down(&(dqopt)->dqonoff_sem); } while(0) #endif /* HAVE_DQUOTOFF_MUTEX */ #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,4) #define NGROUPS_SMALL NGROUPS #define NGROUPS_PER_BLOCK ((int)(EXEC_PAGESIZE / sizeof(gid_t))) struct group_info { int ngroups; atomic_t usage; gid_t small_block[NGROUPS_SMALL]; int nblocks; gid_t *blocks[0]; }; #define current_ngroups current->ngroups #define current_groups current->groups struct group_info *groups_alloc(int gidsetsize); void groups_free(struct group_info *ginfo); #else /* >= 2.6.4 */ #define current_ngroups current->group_info->ngroups #define current_groups current->group_info->small_block #endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2,6,4) */ #ifndef page_private #define page_private(page) ((page)->private) #define set_page_private(page, v) ((page)->private = (v)) #endif #ifndef HAVE_GFP_T #define gfp_t int #endif #define lock_dentry(___dentry) spin_lock(&(___dentry)->d_lock) #define unlock_dentry(___dentry) spin_unlock(&(___dentry)->d_lock) #define lock_24kernel() do {} while (0) #define unlock_24kernel() do {} while (0) #define ll_kernel_locked() kernel_locked() /* * OBD need working random driver, thus all our * initialization routines must be called after device * driver initialization */ #ifndef MODULE #undef module_init #define module_init(a) late_initcall(a) #endif /* XXX our code should be using the 2.6 calls, not the other way around */ #define TryLockPage(page) TestSetPageLocked(page) #define Page_Uptodate(page) PageUptodate(page) #define ll_redirty_page(page) set_page_dirty(page) #define KDEVT_INIT(val) (val) #define LTIME_S(time) (time.tv_sec) #define ll_path_lookup path_lookup #define ll_permission(inode,mask,nd) permission(inode,mask,nd) #define ll_pgcache_lock(mapping) spin_lock(&mapping->page_lock) #define ll_pgcache_unlock(mapping) spin_unlock(&mapping->page_lock) #define ll_call_writepage(inode, page) \ (inode)->i_mapping->a_ops->writepage(page, NULL) #define ll_invalidate_inode_pages(inode) \ invalidate_inode_pages((inode)->i_mapping) #define ll_truncate_complete_page(page) \ truncate_complete_page(page->mapping, page) #define ll_vfs_create(a,b,c,d) vfs_create(a,b,c,d) #define ll_dev_t dev_t #define kdev_t dev_t #define to_kdev_t(dev) (dev) #define kdev_t_to_nr(dev) (dev) #define val_to_kdev(dev) (dev) #define ILOOKUP(sb, ino, test, data) ilookup5(sb, ino, test, data); #include static inline int cleanup_group_info(void) { struct group_info *ginfo; ginfo = groups_alloc(0); if (!ginfo) return -ENOMEM; set_current_groups(ginfo); put_group_info(ginfo); return 0; } #define __set_page_ll_data(page, llap) \ do { \ page_cache_get(page); \ SetPagePrivate(page); \ set_page_private(page, (unsigned long)llap); \ } while (0) #define __clear_page_ll_data(page) \ do { \ ClearPagePrivate(page); \ set_page_private(page, 0); \ page_cache_release(page); \ } while(0) #define kiobuf bio #include #ifndef HAVE___D_REHASH #define __d_rehash(dentry, lock) d_rehash_cond(dentry, lock) #endif #ifdef HAVE_CAN_SLEEP_ARG #define ll_flock_lock_file_wait(file, lock, can_sleep) \ flock_lock_file_wait(file, lock, can_sleep) #else #define ll_flock_lock_file_wait(file, lock, can_sleep) \ flock_lock_file_wait(file, lock) #endif #define CheckWriteback(page, cmd) \ (!(!PageWriteback(page) && cmd == OBD_BRW_WRITE)) #ifdef HAVE_PAGE_LIST static inline int mapping_has_pages(struct address_space *mapping) { int rc = 1; ll_pgcache_lock(mapping); if (list_empty(&mapping->dirty_pages) && list_empty(&mapping->clean_pages) && list_empty(&mapping->locked_pages)) { rc = 0; } ll_pgcache_unlock(mapping); return rc; } #else static inline int mapping_has_pages(struct address_space *mapping) { return mapping->nrpages > 0; } #endif #ifdef HAVE_KIOBUF_KIO_BLOCKS #define KIOBUF_GET_BLOCKS(k) ((k)->kio_blocks) #else #define KIOBUF_GET_BLOCKS(k) ((k)->blocks) #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 container_of(ptr, type, member) ({ \ const typeof( ((type *)0)->member ) *__mptr = (ptr); \ (type *)( (char *)__mptr - offsetof(type,member) );}) #endif #ifdef HAVE_I_ALLOC_SEM #define UP_WRITE_I_ALLOC_SEM(i) do { up_write(&(i)->i_alloc_sem); } while (0) #define DOWN_WRITE_I_ALLOC_SEM(i) do { down_write(&(i)->i_alloc_sem); } while(0) #define LASSERT_I_ALLOC_SEM_WRITE_LOCKED(i) LASSERT(down_read_trylock(&(i)->i_alloc_sem) == 0) #define UP_READ_I_ALLOC_SEM(i) do { up_read(&(i)->i_alloc_sem); } while (0) #define DOWN_READ_I_ALLOC_SEM(i) do { down_read(&(i)->i_alloc_sem); } while (0) #define LASSERT_I_ALLOC_SEM_READ_LOCKED(i) LASSERT(down_write_trylock(&(i)->i_alloc_sem) == 0) #else #define UP_READ_I_ALLOC_SEM(i) do { } while (0) #define DOWN_READ_I_ALLOC_SEM(i) do { } while (0) #define LASSERT_I_ALLOC_SEM_READ_LOCKED(i) do { } while (0) #define UP_WRITE_I_ALLOC_SEM(i) do { } while (0) #define DOWN_WRITE_I_ALLOC_SEM(i) do { } while (0) #define LASSERT_I_ALLOC_SEM_WRITE_LOCKED(i) do { } while (0) #endif #ifndef HAVE_GRAB_CACHE_PAGE_NOWAIT_GFP #define grab_cache_page_nowait_gfp(x, y, z) grab_cache_page_nowait((x), (y)) #endif #ifndef HAVE_FILEMAP_FDATAWRITE #define filemap_fdatawrite(mapping) filemap_fdatasync(mapping) #endif #ifdef HAVE_VFS_KERN_MOUNT static inline struct vfsmount * ll_kern_mount(const char *fstype, int flags, const char *name, void *data) { struct file_system_type *type = get_fs_type(fstype); struct vfsmount *mnt; if (!type) return ERR_PTR(-ENODEV); mnt = vfs_kern_mount(type, flags, name, data); module_put(type->owner); return mnt; } #else #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 #define ll_do_statfs(sb, sfs) (sb)->s_op->statfs((sb), (sfs)) #endif /* task_struct */ #ifndef HAVE_TASK_PPTR #define p_pptr parent #endif #endif /* __KERNEL__ */ #endif /* _COMPAT25_H */