/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- * vim:expandtab:shiftwidth=8:tabstop=8: * * GPL HEADER START * * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * 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. * * 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 * 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 (c) 2003, 2010, Oracle and/or its affiliates. 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 #define _LINUX_COMPAT25_H #ifdef __KERNEL__ #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,5) #error sorry, lustre requires at least 2.6.5 #endif #include #include #include #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,14) struct ll_iattr_struct { struct iattr iattr; unsigned int ia_attr_flags; }; #else #define ll_iattr_struct iattr #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,14) */ #ifdef HAVE_FS_STRUCT_USE_PATH static inline void ll_set_fs_pwd(struct fs_struct *fs, struct vfsmount *mnt, struct dentry *dentry) { struct path path; struct path old_pwd; path.mnt = mnt; path.dentry = dentry; write_lock(&fs->lock); old_pwd = fs->pwd; path_get(&path); fs->pwd = path; write_unlock(&fs->lock); if (old_pwd.dentry) path_put(&old_pwd); } #else 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); } } #endif /* HAVE_FS_STRUCT_USE_PATH */ #ifdef 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_cred()->group_info->ngroups #define current_groups current_cred()->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 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 */ #ifndef HAVE_TRYLOCK_PAGE #define TryLockPage(page) TestSetPageLocked(page) #else #define TryLockPage(page) (!trylock_page(page)) #endif #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 #ifdef HAVE_EXPORT_INODE_PERMISSION #define ll_permission(inode,mask,nd) inode_permission(inode,mask) #else #define ll_permission(inode,mask,nd) permission(inode,mask,nd) #endif #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, (void *)(data)); #ifdef HAVE_BLKDEV_PUT_2ARGS #define ll_blkdev_put(a, b) blkdev_put(a, b) #else #define ll_blkdev_put(a, b) blkdev_put(a) #endif #ifdef HAVE_DENTRY_OPEN_4ARGS #define ll_dentry_open(a, b, c, d) dentry_open(a, b, c, d) #else #define ll_dentry_open(a, b, c, d) dentry_open(a, b, c) #endif #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 #if !defined(HAVE_D_REHASH_COND) && defined(HAVE___D_REHASH) #define d_rehash_cond(dentry, lock) __d_rehash(dentry, lock) extern void __d_rehash(struct dentry *dentry, int lock); #else extern void d_rehash_cond(struct dentry*, int lock); #endif #if !defined(HAVE_D_MOVE_LOCKED) && defined(HAVE___D_MOVE) #define d_move_locked(dentry, target) __d_move(dentry, target) extern void __d_move(struct dentry *dentry, struct dentry *target); #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_READ)) || \ (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 #ifdef HAVE_SECURITY_PLUG #ifdef HAVE_VFS_SYMLINK_5ARGS #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \ vfs_symlink(dir, dentry, mnt, path, mode) #else #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \ vfs_symlink(dir, dentry, mnt, path) #endif #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 /* HAVE_SECURITY_PLUG */ #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,7)) #define ll_set_dflags(dentry, flags) do { dentry->d_vfs_flags |= flags; } while(0) #else #define ll_set_dflags(dentry, flags) do { \ spin_lock(&dentry->d_lock); \ dentry->d_flags |= flags; \ spin_unlock(&dentry->d_lock); \ } while(0) #endif #ifndef container_of #define container_of(ptr, type, member) ({ \ const typeof( ((type *)0)->member ) *__mptr = (ptr); \ (type *)( (char *)__mptr - offsetof(type,member) );}) #endif #define UP_WRITE_I_ALLOC_SEM(i) up_write(&(i)->i_alloc_sem) #define DOWN_WRITE_I_ALLOC_SEM(i) down_write(&(i)->i_alloc_sem) #define LASSERT_I_ALLOC_SEM_WRITE_LOCKED(i) LASSERT(down_read_trylock(&(i)->i_alloc_sem) == 0) #define UP_READ_I_ALLOC_SEM(i) up_read(&(i)->i_alloc_sem) #define DOWN_READ_I_ALLOC_SEM(i) down_read(&(i)->i_alloc_sem) #define LASSERT_I_ALLOC_SEM_READ_LOCKED(i) LASSERT(down_write_trylock(&(i)->i_alloc_sem) == 0) #ifndef HAVE_GRAB_CACHE_PAGE_NOWAIT_GFP #define grab_cache_page_nowait_gfp(x, y, z) grab_cache_page_nowait((x), (y)) #endif #include /* for generic_writepages */ #ifndef HAVE_FILEMAP_FDATAWRITE_RANGE #include /* 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 HAVE_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 /* HAVE_FILEMAP_FDATAWRITE_RANGE */ #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 #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 #ifndef HAVE_D_OBTAIN_ALIAS #define d_obtain_alias(inode) d_alloc_anon(inode) #endif #ifdef HAVE_UNREGISTER_BLKDEV_RETURN_INT #define ll_unregister_blkdev(a,b) unregister_blkdev((a),(b)) #else static inline int ll_unregister_blkdev(unsigned int dev, const char *name) { unregister_blkdev(dev, name); return 0; } #endif #ifdef HAVE_INVALIDATE_BDEV_2ARG #define ll_invalidate_bdev(a,b) invalidate_bdev((a),(b)) #else #define ll_invalidate_bdev(a,b) invalidate_bdev((a)) #endif #ifdef HAVE_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 #endif #ifdef HAVE_FILE_REMOVE_SUID #define ll_remove_suid(file, mnt) file_remove_suid(file) #else #ifdef HAVE_SECURITY_PLUG #ifdef HAVE_PATH_REMOVE_SUID #define ll_remove_suid(file,mnt) remove_suid(&file->f_path) #else #define ll_remove_suid(file,mnt) remove_suid(file->f_dentry,mnt) #endif #else #define ll_remove_suid(file,mnt) remove_suid(file->f_dentry) #endif #endif #ifndef HAVE_SYNCHRONIZE_RCU /* Linux 2.6.32 provides define when !CONFIG_TREE_PREEMPT_RCU */ #ifndef synchronize_rcu #define synchronize_rcu() synchronize_kernel() #endif #endif #ifdef HAVE_SECURITY_PLUG #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_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 /* HAVE_SECURITY_PLUG */ #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 #ifdef HAVE_REGISTER_SHRINKER #define SHRINKER_MASK_T gfp_t typedef int (*shrinker_t)(int nr_to_scan, gfp_t gfp_mask); static inline struct shrinker *set_shrinker(int seek, shrinker_t func) { struct shrinker *s; s = kmalloc(sizeof(*s), GFP_KERNEL); if (s == NULL) return (NULL); s->shrink = func; s->seeks = seek; register_shrinker(s); return s; } static inline void remove_shrinker(struct shrinker *shrinker) { if (shrinker == NULL) return; unregister_shrinker(shrinker); kfree(shrinker); } #endif /* HAVE_REGISTER_SHRINKER */ #ifdef HAVE_BIO_ENDIO_2ARG #define cfs_bio_io_error(a,b) bio_io_error((a)) #define cfs_bio_endio(a,b,c) bio_endio((a),(c)) #else #define cfs_bio_io_error(a,b) bio_io_error((a),(b)) #define cfs_bio_endio(a,b,c) bio_endio((a),(b),(c)) #endif #ifdef HAVE_FS_STRUCT_USE_PATH #define cfs_fs_pwd(fs) ((fs)->pwd.dentry) #define cfs_fs_mnt(fs) ((fs)->pwd.mnt) #define cfs_path_put(nd) path_put(&(nd)->path) #else #define cfs_fs_pwd(fs) ((fs)->pwd) #define cfs_fs_mnt(fs) ((fs)->pwdmnt) #define cfs_path_put(nd) path_release(nd) #endif #ifndef list_for_each_safe_rcu #define list_for_each_safe_rcu(a,b,c) list_for_each_rcu(a, c) #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 #ifndef SLAB_DESTROY_BY_RCU #define SLAB_DESTROY_BY_RCU 0 #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 HAVE_SYSCTL_VFS_CACHE_PRESSURE #define sysctl_vfs_cache_pressure 100 #endif #ifdef HAVE_SB_HAS_QUOTA_ACTIVE #define ll_sb_has_quota_active(sb, type) sb_has_quota_active(sb, type) #else #define ll_sb_has_quota_active(sb, type) sb_has_quota_enabled(sb, type) #endif #ifdef HAVE_SB_ANY_QUOTA_ACTIVE #define ll_sb_any_quota_active(sb) sb_any_quota_active(sb) #else #define ll_sb_any_quota_active(sb) sb_any_quota_enabled(sb) #endif static inline int ll_quota_on(struct super_block *sb, int off, int ver, char *name, int remount) { if (sb->s_qcop->quota_on) { return sb->s_qcop->quota_on(sb, off, ver, name #ifdef HAVE_QUOTA_ON_5ARGS , remount #endif ); } else return -ENOSYS; } static inline int ll_quota_off(struct super_block *sb, int off, int remount) { if (sb->s_qcop->quota_off) { return sb->s_qcop->quota_off(sb, off #ifdef HAVE_QUOTA_OFF_3ARGS , remount #endif ); } else return -ENOSYS; } #ifndef HAVE_BI_HW_SEGMENTS #define bio_hw_segments(q, bio) 0 #endif #ifdef HAVE_FILE_UPDATE_TIME #define ll_update_time(file) file_update_time(file) #else #define ll_update_time(file) inode_update_time(file->f_mapping->host, 1) #endif /* Needed for sles9 */ #ifndef HAVE_ATOMIC_CMPXCHG #define atomic_cmpxchg(v, old, new) ((int)cmpxchg(&((v)->counter), old, new)) #endif /* Needed for rhel4 and sles9 */ #ifndef HAVE_ATOMIC_INC_NOT_ZERO /** * atomic_add_unless - add unless the number is a given value * @v: pointer of type atomic_t * @a: the amount to add to v... * @u: ...unless v is equal to u. * * Atomically adds @a to @v, so long as it was not @u. * Returns non-zero if @v was not @u, and zero otherwise. */ #define atomic_add_unless(v, a, u) \ ({ \ int c, old; \ c = atomic_read(v); \ while (c != (u) && (old = atomic_cmpxchg((v), c, c + (a))) != c) \ c = old; \ c != (u); \ }) #define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0) #endif /* !atomic_inc_not_zero */ #ifndef HAVE_BLK_QUEUE_LOG_BLK_SIZE /* added in 2.6.31 */ #define blk_queue_logical_block_size(q, sz) blk_queue_hardsect_size(q, sz) #endif #ifdef HAVE_DQUOT_INIT #define ll_vfs_dq_init DQUOT_INIT #define ll_vfs_dq_drop DQUOT_DROP #else #define ll_vfs_dq_init vfs_dq_init #define ll_vfs_dq_drop vfs_dq_drop #endif #ifndef HAVE_REQUEST_QUEUE_LIMITS #define queue_max_sectors(rq) ((rq)->max_sectors) #define queue_max_hw_sectors(rq) ((rq)->max_hw_sectors) #define queue_max_hw_segments(rq) ((rq)->max_hw_segments) #define queue_max_phys_segments(rq) ((rq)->max_phys_segments) #endif #endif /* __KERNEL__ */ #endif /* _COMPAT25_H */