-/* -*- 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.
* GPL HEADER END
*/
/*
- * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2012, Whamcloud, Inc.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#endif
#include <linux/fs_struct.h>
+#include <linux/namei.h>
#include <libcfs/linux/portals_compat25.h>
#include <linux/lustre_patchless_compat.h>
+/* Some old kernels (like 2.6.9) may not define such SEEK_XXX. So the
+ * definition allows to compile lustre client on more OS platforms. */
+#ifndef SEEK_SET
+ #define SEEK_SET 0
+ #define SEEK_CUR 1
+ #define SEEK_END 2
+#endif
+
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,14)
struct ll_iattr {
struct iattr iattr;
#define ll_iattr iattr
#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,14) */
+#ifdef HAVE_FS_STRUCT_RWLOCK
+# define LOCK_FS_STRUCT(fs) cfs_write_lock(&(fs)->lock)
+# define UNLOCK_FS_STRUCT(fs) cfs_write_unlock(&(fs)->lock)
+#else
+# define LOCK_FS_STRUCT(fs) cfs_spin_lock(&(fs)->lock)
+# define UNLOCK_FS_STRUCT(fs) cfs_spin_unlock(&(fs)->lock)
+#endif
+
#ifdef HAVE_FS_STRUCT_USE_PATH
static inline void ll_set_fs_pwd(struct fs_struct *fs, struct vfsmount *mnt,
struct dentry *dentry)
path.mnt = mnt;
path.dentry = dentry;
- write_lock(&fs->lock);
+ LOCK_FS_STRUCT(fs);
old_pwd = fs->pwd;
path_get(&path);
fs->pwd = path;
- write_unlock(&fs->lock);
+ UNLOCK_FS_STRUCT(fs);
if (old_pwd.dentry)
path_put(&old_pwd);
struct dentry *old_pwd;
struct vfsmount *old_pwdmnt;
- cfs_write_lock(&fs->lock);
+ LOCK_FS_STRUCT(fs);
old_pwd = fs->pwd;
old_pwdmnt = fs->pwdmnt;
fs->pwdmnt = mntget(mnt);
fs->pwd = dget(dentry);
- cfs_write_unlock(&fs->lock);
+ UNLOCK_FS_STRUCT(fs);
if (old_pwd) {
dput(old_pwd);
#define LOCK_INODE_MUTEX_PARENT(inode) LOCK_INODE_MUTEX(inode)
#endif /* HAVE_INODE_I_MUTEX */
-#ifdef HAVE_SEQ_LOCK
-#define LL_SEQ_LOCK(seq) cfs_mutex_lock(&(seq)->lock)
-#define LL_SEQ_UNLOCK(seq) cfs_mutex_unlock(&(seq)->lock)
-#else
-#define LL_SEQ_LOCK(seq) cfs_down(&(seq)->sem)
-#define LL_SEQ_UNLOCK(seq) cfs_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
#define set_page_private(page, v) ((page)->private = (v))
#endif
-#ifndef HAVE_GFP_T
-#define gfp_t int
-#endif
-
-#define lock_dentry(___dentry) cfs_spin_lock(&(___dentry)->d_lock)
-#define unlock_dentry(___dentry) cfs_spin_unlock(&(___dentry)->d_lock)
-
#define ll_kernel_locked() kernel_locked()
/*
#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
+
+#ifdef HAVE_GENERIC_PERMISSION_4ARGS
+#define ll_generic_permission(inode, mask, flags, check_acl) \
+ generic_permission(inode, mask, flags, check_acl)
+#else
+#define ll_generic_permission(inode, mask, flags, check_acl) \
+ generic_permission(inode, mask, check_acl)
+#endif
#define ll_pgcache_lock(mapping) cfs_spin_lock(&mapping->page_lock)
#define ll_pgcache_unlock(mapping) cfs_spin_unlock(&mapping->page_lock)
(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 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)
#include <linux/proc_fs.h>
-#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);
-#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)))
#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)
-#else
-#define ll_set_dflags(dentry, flags) do { \
- cfs_spin_lock(&dentry->d_lock); \
- dentry->d_flags |= flags; \
- cfs_spin_unlock(&dentry->d_lock); \
- } while(0)
#endif
#ifndef container_of
#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 <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)
+
+#ifndef HAVE_ATOMIC_MNT_COUNT
+static inline unsigned int mnt_get_count(struct vfsmount *mnt)
{
- int rc;
- struct writeback_control wbc = {
- .sync_mode = WB_SYNC_ALL,
- .nr_to_write = (end - start + PAGE_SIZE - 1) >> PAGE_SHIFT,
- };
+#ifdef CONFIG_SMP
+ unsigned int count = 0;
+ int cpu;
-#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
+ for_each_possible_cpu(cpu) {
+ count += per_cpu_ptr(mnt->mnt_pcp, cpu)->mnt_count;
+ }
-#ifdef HAVE_MAPPING_CAP_WRITEBACK_DIRTY
- if (!mapping_cap_writeback_dirty(mapping))
- rc = 0;
+ return count;
#else
- if (mapping->backing_dev_info->memory_backed)
- rc = 0;
+ return mnt->mnt_count;
#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);
- cfs_module_put(type->owner);
- return mnt;
-}
-#else
-#define ll_kern_mount(fstype, flags, name, data) do_kern_mount((fstype), (flags), (name), (data))
+# define mnt_get_count(mnt) cfs_atomic_read(&mnt->mnt_count)
#endif
#ifdef HAVE_STATFS_DENTRY_PARAM
#define ll_do_statfs(sb, sfs) (sb)->s_op->statfs((sb), (sfs))
#endif
-#ifndef HAVE_SB_TIME_GRAN
-#ifndef HAVE_S_TIME_GRAN
-#error Need s_time_gran patch!
-#endif
-static inline u32 get_sb_time_gran(struct super_block *sb)
-{
- return sb->s_time_gran;
-}
-#endif
-
#ifdef HAVE_RW_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)
#endif
#ifndef HAVE_D_OBTAIN_ALIAS
-#define d_obtain_alias(inode) d_alloc_anon(inode)
+/* The old d_alloc_anon() didn't free the inode reference on error
+ * like d_obtain_alias(). Hide that difference/inconvenience here. */
+static inline struct dentry *d_obtain_alias(struct inode *inode)
+{
+ struct dentry *anon = d_alloc_anon(inode);
+
+ if (anon == NULL) {
+ iput(inode);
+ anon = ERR_PTR(-ENOMEM);
+ }
+
+ return anon;
+}
#endif
/* add a lustre compatible layer for crypto API */
#define ll_crypto_hash_init(desc) crypto_hash_init(desc)
#define ll_crypto_hash_update(desc, sl, bytes) crypto_hash_update(desc, sl, bytes)
#define ll_crypto_hash_final(desc, out) crypto_hash_final(desc, out)
-#define ll_crypto_alloc_blkcipher(name, type, mask) \
- crypto_alloc_blkcipher(name ,type, mask)
#define ll_crypto_blkcipher_setkey(tfm, key, keylen) \
crypto_blkcipher_setkey(tfm, key, keylen)
#define ll_crypto_blkcipher_set_iv(tfm, src, len) \
#define ll_crypto_blkcipher_decrypt_iv(desc, dst, src, bytes) \
crypto_blkcipher_decrypt_iv(desc, dst, src, bytes)
+static inline
+struct ll_crypto_cipher *ll_crypto_alloc_blkcipher(const char *name,
+ u32 type, u32 mask)
+{
+ struct ll_crypto_cipher *rtn = crypto_alloc_blkcipher(name, type, mask);
+
+ return (rtn == NULL ? ERR_PTR(-ENOMEM) : rtn);
+}
+
static inline int ll_crypto_hmac(struct ll_crypto_hash *tfm,
u8 *key, unsigned int *keylen,
struct scatterlist *sg,
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);
+ struct ll_crypto_cipher *rtn;
+ 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;
+ }
+ }
+ rtn = crypto_alloc_tfm(pan, flag);
+ return (rtn == NULL ? ERR_PTR(-ENOMEM) : rtn);
}
static inline
#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_FILE_REMOVE_SUID
# define ll_remove_suid(file, mnt) file_remove_suid(file)
#else
#define cfs_for_each_possible_cpu(cpu) for_each_cpu(cpu)
#endif
-#ifndef cpu_to_node
-#define cpu_to_node(cpu) 0
-#endif
-
-#ifdef HAVE_REGISTER_SHRINKER
-typedef int (*cfs_shrinker_t)(int nr_to_scan, gfp_t gfp_mask);
-
-static inline
-struct shrinker *cfs_set_shrinker(int seek, cfs_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 cfs_remove_shrinker(struct shrinker *shrinker)
-{
- if (shrinker == NULL)
- return;
-
- unregister_shrinker(shrinker);
- kfree(shrinker);
-}
-#endif
-
#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))
#define INODE_PRIVATE_DATA(inode) ((inode)->u.generic_ip)
#endif
+#ifndef HAVE_SIMPLE_SETATTR
+#define simple_setattr(dentry, ops) inode_setattr((dentry)->d_inode, ops)
+#endif
+
#ifndef SLAB_DESTROY_BY_RCU
#define CFS_SLAB_DESTROY_BY_RCU 0
#else
#define ll_sb_has_quota_active(sb, type) sb_has_quota_enabled(sb, type)
#endif
-#ifdef HAVE_SB_ANY_QUOTA_ACTIVE
+#ifdef HAVE_SB_ANY_QUOTA_LOADED
+#define ll_sb_any_quota_active(sb) sb_any_quota_loaded(sb)
+#elif defined(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)
static inline int
ll_quota_on(struct super_block *sb, int off, int ver, char *name, int remount)
{
+ int rc;
+
if (sb->s_qcop->quota_on) {
- return sb->s_qcop->quota_on(sb, off, ver, name
+#ifdef HAVE_QUOTA_ON_USE_PATH
+ struct path path;
+
+ rc = kern_path(name, LOOKUP_FOLLOW, &path);
+ if (!rc)
+ return rc;
+#endif
+ rc = sb->s_qcop->quota_on(sb, off, ver
+#ifdef HAVE_QUOTA_ON_USE_PATH
+ , &path
+#else
+ , name
+#endif
#ifdef HAVE_QUOTA_ON_5ARGS
, remount
#endif
);
+#ifdef HAVE_QUOTA_ON_USE_PATH
+ path_put(&path);
+#endif
+ return rc;
}
else
return -ENOSYS;
return -ENOSYS;
}
+#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
+
+#ifndef HAVE_VFS_DQ_OFF
+# define ll_vfs_dq_init DQUOT_INIT
+# define ll_vfs_dq_drop DQUOT_DROP
+# define ll_vfs_dq_transfer DQUOT_TRANSFER
+# define ll_vfs_dq_off(sb, remount) DQUOT_OFF(sb)
+#else
+# define ll_vfs_dq_init vfs_dq_init
+# define ll_vfs_dq_drop vfs_dq_drop
+# define ll_vfs_dq_transfer vfs_dq_transfer
+# define ll_vfs_dq_off(sb, remount) vfs_dq_off(sb, remount)
+#endif
+
+#ifdef HAVE_BDI_INIT
+#define ll_bdi_init(bdi) bdi_init(bdi)
+#define ll_bdi_destroy(bdi) bdi_destroy(bdi)
+#else
+#define ll_bdi_init(bdi) 0
+#define ll_bdi_destroy(bdi) do { } while(0)
+#endif
+
+#ifdef HAVE_NEW_BACKING_DEV_INFO
+# define ll_bdi_wb_cnt(bdi) ((bdi).wb_cnt)
+#else
+# define ll_bdi_wb_cnt(bdi) 1
+#endif
+
+#ifdef HAVE_BLK_QUEUE_MAX_SECTORS /* removed in rhel6 */
+#define blk_queue_max_hw_sectors(q, sect) blk_queue_max_sectors(q, sect)
+#endif
+
+#ifndef HAVE_BLKDEV_GET_BY_DEV
+# define blkdev_get_by_dev(dev, mode, holder) open_by_devnum(dev, mode)
+#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_phys_segments(rq) ((rq)->max_phys_segments)
+#define queue_max_hw_segments(rq) ((rq)->max_hw_segments)
+#endif
+
+#ifndef HAVE_BLK_QUEUE_MAX_SEGMENTS
+#define blk_queue_max_segments(rq, seg) \
+ do { blk_queue_max_phys_segments(rq, seg); \
+ blk_queue_max_hw_segments(rq, seg); } while (0)
+#else
+#define queue_max_phys_segments(rq) queue_max_segments(rq)
+#define queue_max_hw_segments(rq) queue_max_segments(rq)
+#endif
+
+
+#ifndef HAVE_BI_HW_SEGMENTS
+#define bio_hw_segments(q, bio) 0
+#endif
+
+#ifndef HAVE_PAGEVEC_LRU_ADD_FILE
+#define pagevec_lru_add_file pagevec_lru_add
+#endif
+
+#ifdef HAVE_ADD_TO_PAGE_CACHE_LRU
+#define ll_add_to_page_cache_lru(pg, mapping, off, gfp) \
+ add_to_page_cache_lru(pg, mapping, off, gfp)
+#define ll_pagevec_init(pv, cold) do {} while (0)
+#define ll_pagevec_add(pv, pg) (0)
+#define ll_pagevec_lru_add_file(pv) do {} while (0)
+#else
+#define ll_add_to_page_cache_lru(pg, mapping, off, gfp) \
+ add_to_page_cache(pg, mapping, off, gfp)
+#define ll_pagevec_init(pv, cold) pagevec_init(&lru_pvec, cold);
+#define ll_pagevec_add(pv, pg) \
+({ \
+ int __ret; \
+ \
+ page_cache_get(pg); \
+ __ret = pagevec_add(pv, pg); \
+})
+#define ll_pagevec_lru_add_file(pv) pagevec_lru_add_file(pv)
+#endif
+
+#if !defined(HAVE_NODE_TO_CPUMASK) && defined(HAVE_CPUMASK_OF_NODE)
+#define node_to_cpumask(i) (*(cpumask_of_node(i)))
+#define HAVE_NODE_TO_CPUMASK
+#endif
+
+#ifndef QUOTA_OK
+# define QUOTA_OK 0
+#endif
+#ifndef NO_QUOTA
+# define NO_QUOTA (-EDQUOT)
+#endif
+
+#if !defined(_ASM_GENERIC_BITOPS_EXT2_NON_ATOMIC_H_) && !defined(ext2_set_bit)
+# define ext2_set_bit __test_and_set_bit_le
+# define ext2_clear_bit __test_and_clear_bit_le
+# define ext2_test_bit test_bit_le
+# define ext2_find_first_zero_bit find_first_zero_bit_le
+# define ext2_find_next_zero_bit find_next_zero_bit_le
+#endif
+
+#ifdef ATTR_TIMES_SET
+# define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET | ATTR_TIMES_SET)
+#else
+# define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET)
+#endif
+
+#ifndef HAVE_SELINUX_IS_ENABLED
+static inline bool selinux_is_enabled(void)
+{
+ return 0;
+}
+#endif
+
#endif /* __KERNEL__ */
#endif /* _COMPAT25_H */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff