X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Fllite%2Fllite_internal.h;h=2701b7183765787c9fac499926eb0814507120de;hp=3b73342f174b7f71d995ebbd8db22094247bb742;hb=31819a287dcfc8b11b7623b399e9fb444174602c;hpb=4cc21ecbcee4d29017fe5d400f3a88321d65d58d diff --git a/lustre/llite/llite_internal.h b/lustre/llite/llite_internal.h index 3b73342..2701b71 100644 --- a/lustre/llite/llite_internal.h +++ b/lustre/llite/llite_internal.h @@ -1,27 +1,53 @@ /* -*- 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 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 LLITE_INTERNAL_H #define LLITE_INTERNAL_H -#include - -#ifdef CONFIG_FS_POSIX_ACL -# include -#ifdef HAVE_XATTR_ACL -# include -#endif /* HAVE_XATTR_ACL */ -#ifdef HAVE_LINUX_POSIX_ACL_XATTR_H -# include -#endif /* HAVE_LINUX_POSIX_ACL_XATTR_H */ -#endif /* CONFIG_FS_POSIX_ACL */ +#include #include #include #include /* for s2sbi */ #include +/* for struct cl_lock_descr and struct cl_io */ +#include +#include + #ifndef FMODE_EXEC #define FMODE_EXEC 0 #endif @@ -45,7 +71,6 @@ struct ll_dentry_data { struct lookup_intent *lld_it; #endif unsigned int lld_sa_generation; - cfs_waitq_t lld_waitq; }; #define ll_d2d(de) ((struct ll_dentry_data*)((de)->d_fsdata)) @@ -100,13 +125,11 @@ struct ll_inode_info { /* this lock protects posix_acl, pending_write_llaps, mmap_cnt */ spinlock_t lli_lock; - struct list_head lli_pending_write_llaps; struct list_head lli_close_list; /* handle is to be sent to MDS later on done_writing and setattr. * Open handle data are needed for the recovery to reconstruct * the inode state on the MDS. XXX: recovery is not ready yet. */ struct obd_client_handle *lli_pending_och; - atomic_t lli_mmap_cnt; /* for writepage() only to communicate to fsync */ int lli_async_rc; @@ -150,12 +173,13 @@ struct ll_inode_info { * dir statahead. */ pid_t lli_opendir_pid; - /* + /* * since parent-child threads can share the same @file struct, * "opendir_key" is the token when dir close for case of parent exit * before child -- it is me should cleanup the dir readahead. */ void *lli_opendir_key; struct ll_statahead_info *lli_sai; + struct cl_object *lli_clob; }; /* @@ -200,10 +224,29 @@ enum ra_stat { }; struct ll_ra_info { - unsigned long ra_cur_pages; + atomic_t ra_cur_pages; unsigned long ra_max_pages; + unsigned long ra_max_pages_per_file; unsigned long ra_max_read_ahead_whole_pages; - unsigned long ra_stats[_NR_RA_STAT]; +}; + +/* ra_io_arg will be filled in the beginning of ll_readahead with + * ras_lock, then the following ll_read_ahead_pages will read RA + * pages according to this arg, all the items in this structure are + * counted by page index. + */ +struct ra_io_arg { + unsigned long ria_start; /* start offset of read-ahead*/ + unsigned long ria_end; /* end offset of read-ahead*/ + /* If stride read pattern is detected, ria_stoff means where + * stride read is started. Note: for normal read-ahead, the + * value here is meaningless, and also it will not be accessed*/ + pgoff_t ria_stoff; + /* ria_length and ria_pages are the length and pages length in the + * stride I/O mode. And they will also be used to check whether + * it is stride I/O read-ahead in the read-ahead pages*/ + unsigned long ria_length; + unsigned long ria_pages; }; /* LL_HIST_MAX=32 causes an overflow */ @@ -231,7 +274,7 @@ struct ll_rw_process_info { loff_t rw_offset; size_t rw_smallest_extent; size_t rw_largest_extent; - struct file *rw_last_file; + struct ll_file_data *rw_last_file; }; enum stats_track_type { @@ -254,6 +297,7 @@ enum stats_track_type { #define LL_SBI_OSS_CAPA 0x100 /* support oss capa */ #define LL_SBI_LOCALFLOCK 0x200 /* Local flocks support by kernel */ #define LL_SBI_LRU_RESIZE 0x400 /* lru resize support */ +#define LL_SBI_LAZYSTATFS 0x800 /* lazystatfs mount option */ /* default value for ll_sb_info->contention_time */ #define SBI_DEFAULT_CONTENTION_SECONDS 60 @@ -311,11 +355,8 @@ struct ll_sb_info { unsigned long ll_async_page_max; unsigned long ll_async_page_count; - unsigned long ll_pglist_gen; - struct list_head ll_pglist; /* all pages (llap_pglist_item) */ - unsigned ll_contention_time; /* seconds */ - unsigned ll_lockless_truncate_enable; /* true/false */ + struct lprocfs_stats *ll_ra_stats; struct ll_ra_info ll_ra_info; unsigned int ll_namelen; @@ -329,6 +370,8 @@ struct ll_sb_info { * >0 - max. chunk to be read/written w/o lock re-acquiring */ unsigned long ll_max_rw_chunk; + struct lu_site *ll_site; + struct cl_device *ll_cl; /* Statistics */ struct ll_rw_extents_info ll_rw_extents_info; int ll_extent_process_count; @@ -358,7 +401,7 @@ struct ll_sb_info { struct eacl_table ll_et; }; -#define LL_DEFAULT_MAX_RW_CHUNK (32 * 1024 * 1024) +#define LL_DEFAULT_MAX_RW_CHUNK (32 * 1024 * 1024) struct ll_ra_read { pgoff_t lrr_start; @@ -430,12 +473,12 @@ struct ll_readahead_state { * protected by ->ras_lock. */ struct list_head ras_read_beads; - /* + /* * The following 3 items are used for detecting the stride I/O - * mode. - * In stride I/O mode, - * ...............|-----data-----|****gap*****|--------|******|.... - * offset |-stride_pages-|-stride_gap-| + * mode. + * In stride I/O mode, + * ...............|-----data-----|****gap*****|--------|******|.... + * offset |-stride_pages-|-stride_gap-| * ras_stride_offset = offset; * ras_stride_length = stride_pages + stride_gap; * ras_stride_pages = stride_pages; @@ -444,7 +487,7 @@ struct ll_readahead_state { unsigned long ras_stride_length; unsigned long ras_stride_pages; pgoff_t ras_stride_offset; - /* + /* * number of consecutive stride request count, and it is similar as * ras_consecutive_requests, but used for stride I/O mode. * Note: only more than 2 consecutive stride request are detected, @@ -461,10 +504,10 @@ struct lustre_handle; struct ll_file_data { struct ll_readahead_state fd_ras; int fd_omode; - struct lustre_handle fd_cwlockh; - unsigned long fd_gid; + struct ccc_grouplock fd_grouplock; struct ll_file_dir fd_dir; __u32 fd_flags; + struct file *fd_file; }; struct lov_stripe_md; @@ -491,42 +534,27 @@ void ll_i2gids(__u32 *suppgids, struct inode *i1,struct inode *i2); extern cfs_mem_cache_t *ll_async_page_slab; extern size_t ll_async_page_slab_size; -struct ll_async_page { - int llap_magic; - /* only trust these if the page lock is providing exclusion */ - unsigned int llap_write_queued:1, - llap_defer_uptodate:1, - llap_origin:3, - llap_ra_used:1, - llap_ignore_quota:1, - llap_lockless_io_page:1; - void *llap_cookie; - struct page *llap_page; - struct list_head llap_pending_write; - struct list_head llap_pglist_item; - /* checksum for paranoid I/O debugging */ - __u32 llap_checksum; -}; - -/* - * enumeration of llap_from_page() call-sites. Used to export statistics in - * /proc/fs/lustre/llite/fsN/dump_page_cache. - */ -enum { - LLAP_ORIGIN_UNKNOWN = 0, - LLAP_ORIGIN_READPAGE, - LLAP_ORIGIN_READAHEAD, - LLAP_ORIGIN_COMMIT_WRITE, - LLAP_ORIGIN_WRITEPAGE, - LLAP_ORIGIN_REMOVEPAGE, - LLAP_ORIGIN_LOCKLESS_IO, - LLAP__ORIGIN_MAX, -}; -extern char *llap_origins[]; #ifdef HAVE_REGISTER_CACHE +#include #define ll_register_cache(cache) register_cache(cache) #define ll_unregister_cache(cache) unregister_cache(cache) +#elif defined(HAVE_SHRINKER_CACHE) +struct cache_definition { + const char *name; + shrinker_t shrink; + struct shrinker *shrinker; +}; + +#define ll_register_cache(cache) do { \ + struct cache_definition *c = (cache); \ + c->shrinker = set_shrinker(DEFAULT_SEEKS, c->shrink); \ +} while(0) + +#define ll_unregister_cache(cache) do { \ + remove_shrinker((cache)->shrinker); \ + (cache)->shrinker = NULL; \ +} while(0) #else #define ll_register_cache(cache) do {} while (0) #define ll_unregister_cache(cache) do {} while (0) @@ -584,22 +612,17 @@ void ll_lookup_finish_locks(struct lookup_intent *it, struct dentry *dentry); /* llite/rw.c */ int ll_prepare_write(struct file *, struct page *, unsigned from, unsigned to); int ll_commit_write(struct file *, struct page *, unsigned from, unsigned to); -int ll_writepage(struct page *page); -void ll_inode_fill_obdo(struct inode *inode, int cmd, struct obdo *oa); -int ll_ap_completion(void *data, int cmd, struct obdo *oa, int rc); -int llap_shrink_cache(struct ll_sb_info *sbi, int shrink_fraction); -struct ll_async_page *llap_from_page(struct page *page, unsigned origin); -extern struct cache_definition ll_cache_definition; +int ll_writepage(struct page *page, struct writeback_control *wbc); void ll_removepage(struct page *page); int ll_readpage(struct file *file, struct page *page); -struct ll_async_page *llap_cast_private(struct page *page); void ll_readahead_init(struct inode *inode, struct ll_readahead_state *ras); -void ll_ra_accounting(struct ll_async_page *llap,struct address_space *mapping); void ll_truncate(struct inode *inode); int ll_file_punch(struct inode *, loff_t, int); ssize_t ll_file_lockless_io(struct file *, char *, size_t, loff_t *, int); void ll_clear_file_contended(struct inode*); int ll_sync_page_range(struct inode *, struct address_space *, loff_t, size_t); +int ll_readahead(const struct lu_env *env, struct cl_io *io, struct ll_readahead_state *ras, + struct address_space *mapping, struct cl_page_list *queue, int flags); /* llite/file.c */ extern struct file_operations ll_file_operations; @@ -610,18 +633,13 @@ extern int ll_inode_revalidate_it(struct dentry *, struct lookup_intent *); extern int ll_have_md_lock(struct inode *inode, __u64 bits); extern ldlm_mode_t ll_take_md_lock(struct inode *inode, __u64 bits, struct lustre_handle *lockh); -int ll_extent_lock(struct ll_file_data *, struct inode *, - struct lov_stripe_md *, int mode, ldlm_policy_data_t *, - struct lustre_handle *, int ast_flags); -int ll_extent_unlock(struct ll_file_data *, struct inode *, - struct lov_stripe_md *, int mode, struct lustre_handle *); +int __ll_inode_revalidate_it(struct dentry *, struct lookup_intent *, __u64 bits); +int ll_revalidate_nd(struct dentry *dentry, struct nameidata *nd); int ll_file_open(struct inode *inode, struct file *file); int ll_file_release(struct inode *inode, struct file *file); -int ll_lsm_getattr(struct obd_export *, struct lov_stripe_md *, struct obdo *); -int ll_local_size(struct inode *inode); int ll_glimpse_ioctl(struct ll_sb_info *sbi, struct lov_stripe_md *lsm, lstat_t *st); -int ll_glimpse_size(struct inode *inode, int ast_flags); +void ll_ioepoch_open(struct ll_inode_info *lli, __u64 ioepoch); int ll_local_open(struct file *file, struct lookup_intent *it, struct ll_file_data *fd, struct obd_client_handle *och); @@ -631,15 +649,16 @@ int ll_md_close(struct obd_export *md_exp, struct inode *inode, int ll_md_real_close(struct inode *inode, int flags); void ll_epoch_close(struct inode *inode, struct md_op_data *op_data, struct obd_client_handle **och, unsigned long flags); -int ll_sizeonmds_update(struct inode *inode, struct md_open_data *data, - struct lustre_handle *fh, __u64 ioepoch); +int ll_sizeonmds_update(struct inode *inode, struct lustre_handle *fh, + __u64 ioepoch); int ll_inode_getattr(struct inode *inode, struct obdo *obdo); int ll_md_setattr(struct inode *inode, struct md_op_data *op_data, struct md_open_data **mod); void ll_pack_inode2opdata(struct inode *inode, struct md_op_data *op_data, struct lustre_handle *fh); -extern void ll_rw_stats_tally(struct ll_sb_info *sbi, pid_t pid, struct file - *file, size_t count, int rw); +extern void ll_rw_stats_tally(struct ll_sb_info *sbi, pid_t pid, + struct ll_file_data *file, loff_t pos, + size_t count, int rw); int ll_getattr_it(struct vfsmount *mnt, struct dentry *de, struct lookup_intent *it, struct kstat *stat); int ll_getattr(struct vfsmount *mnt, struct dentry *de, struct kstat *stat); @@ -653,13 +672,23 @@ int ll_lov_getstripe_ea_info(struct inode *inode, const char *filename, struct ptlrpc_request **request); int ll_dir_setstripe(struct inode *inode, struct lov_user_md *lump, int set_default); -int ll_dir_getstripe(struct inode *inode, struct lov_mds_md **lmm, +int ll_dir_getstripe(struct inode *inode, struct lov_mds_md **lmm, int *lmm_size, struct ptlrpc_request **request); +int ll_fsync(struct file *file, struct dentry *dentry, int data); +int ll_fiemap(struct inode *inode, struct ll_user_fiemap *fiemap, + int num_bytes); +int ll_merge_lvb(struct inode *inode); +int ll_get_grouplock(struct inode *inode, struct file *file, unsigned long arg); +int ll_put_grouplock(struct inode *inode, struct file *file, unsigned long arg); +int ll_fid2path(struct obd_export *exp, void *arg); /* llite/dcache.c */ -extern struct dentry_operations ll_init_d_ops; +/* llite/namei.c */ +/** + * protect race ll_find_aliases vs ll_revalidate_it vs ll_unhash_aliases + */ +extern spinlock_t ll_lookup_lock; extern struct dentry_operations ll_d_ops; -extern struct dentry_operations ll_fini_d_ops; void ll_intent_drop_lock(struct lookup_intent *); void ll_intent_release(struct lookup_intent *); int ll_drop_dentry(struct dentry *dentry); @@ -703,12 +732,11 @@ void ll_umount_begin(struct vfsmount *vfsmnt, int flags); void ll_umount_begin(struct super_block *sb); #endif int ll_remount_fs(struct super_block *sb, int *flags, char *data); +int ll_show_options(struct seq_file *seq, struct vfsmount *vfs); int ll_prep_inode(struct inode **inode, struct ptlrpc_request *req, struct super_block *); void lustre_dump_dentry(struct dentry *, int recur); void lustre_dump_inode(struct inode *); -struct ll_async_page *llite_pglist_next_llap(struct ll_sb_info *sbi, - struct list_head *list); int ll_obd_statfs(struct inode *inode, void *arg); int ll_get_max_mdsize(struct ll_sb_info *sbi, int *max_mdsize); int ll_process_config(struct lustre_cfg *lcfg); @@ -746,9 +774,96 @@ struct ll_close_queue { atomic_t lcq_stop; }; -void llap_write_pending(struct inode *inode, struct ll_async_page *llap); -int llap_write_complete(struct inode *inode, struct ll_async_page *llap); -int ll_inode_dirty(struct inode *inode, unsigned long flags); +struct vvp_thread_info { + struct ost_lvb vti_lvb; + struct cl_2queue vti_queue; + struct iovec vti_local_iov; + struct ccc_io_args vti_args; + struct ra_io_arg vti_ria; + struct kiocb vti_kiocb; +}; + +struct ccc_object *cl_inode2ccc(struct inode *inode); + +static inline struct vvp_thread_info *vvp_env_info(const struct lu_env *env) +{ + extern struct lu_context_key vvp_key; + struct vvp_thread_info *info; + + info = lu_context_key_get(&env->le_ctx, &vvp_key); + LASSERT(info != NULL); + return info; +} + +void vvp_write_pending (struct ccc_object *club, struct ccc_page *page); +void vvp_write_complete(struct ccc_object *club, struct ccc_page *page); + +struct vvp_io { + union { + struct { + read_actor_t cui_actor; + void *cui_target; + } read; + struct vvp_fault_io { + /** + * Inode modification time that is checked across DLM + * lock request. + */ + time_t ft_mtime; + struct vm_area_struct *ft_vma; + /** + * Virtual address at which fault occurred. + */ + unsigned long ft_address; + /** + * Fault type, as to be supplied to filemap_nopage(). + */ + int *ft_type; + } fault; + } u; + /** + * Read-ahead state used by read and page-fault IO contexts. + */ + struct ll_ra_read cui_bead; + /** + * Set when cui_bead has been initialized. + */ + int cui_ra_window_set; + /** + * If IO was created directly in low level method like + * ->prepare_write(), this field stores the number of method calls + * that constitute this IO. This field is decremented by ll_cl_fini(), + * and cl_io is destroyed, when it reaches 0. When oneshot IO + * completes, this fields is set to -1. + */ + + int cui_oneshot; + /** + * Partially truncated page, that vvp_io_trunc_start() keeps locked + * across truncate. + */ + struct cl_page *cui_partpage; +}; + +struct vvp_session { + struct vvp_io vs_ios; +}; + +static inline struct vvp_session *vvp_env_session(const struct lu_env *env) +{ + extern struct lu_context_key vvp_session_key; + struct vvp_session *ses; + + ses = lu_context_key_get(env->le_ses, &vvp_session_key); + LASSERT(ses != NULL); + return ses; +} + +static inline struct vvp_io *vvp_env_io(const struct lu_env *env) +{ + return &vvp_env_session(env)->vs_ios; +} + void ll_queue_done_writing(struct inode *inode, unsigned long flags); void ll_close_thread_shutdown(struct ll_close_queue *lcq); int ll_close_thread_start(struct ll_close_queue **lcq_ret); @@ -768,10 +883,9 @@ int ll_teardown_mmaps(struct address_space *mapping, __u64 first, __u64 last); int ll_file_mmap(struct file * file, struct vm_area_struct * vma); struct ll_lock_tree_node * ll_node_from_inode(struct inode *inode, __u64 start, __u64 end, ldlm_mode_t mode); -int ll_tree_lock(struct ll_lock_tree *tree, - struct ll_lock_tree_node *first_node, - const char *buf, size_t count, int ast_flags); -int ll_tree_unlock(struct ll_lock_tree *tree); +void policy_from_vma(ldlm_policy_data_t *policy, + struct vm_area_struct *vma, unsigned long addr, size_t count); +struct vm_area_struct *our_vma(unsigned long addr, size_t count); #define ll_s2sbi(sb) (s2lsi(sb)->lsi_llsbi) @@ -855,6 +969,7 @@ int lustre_check_remote_perm(struct inode *inode, int mask); /* llite/llite_fid.c */ ino_t ll_fid_build_ino(struct ll_sb_info *sbi, struct lu_fid *fid); +__u32 ll_fid_build_gen(struct ll_sb_info *sbi, struct lu_fid *fid); /* llite/llite_capa.c */ extern cfs_timer_t ll_capa_timer; @@ -876,6 +991,28 @@ void ll_truncate_free_capa(struct obd_capa *ocapa); void ll_clear_inode_capas(struct inode *inode); void ll_print_capa_stat(struct ll_sb_info *sbi); +/* llite/llite_cl.c */ +extern struct lu_device_type vvp_device_type; + +/** + * Common IO arguments for various VFS I/O interfaces. + */ + +int cl_sb_init(struct super_block *sb); +int cl_sb_fini(struct super_block *sb); +int cl_inode_init(struct inode *inode, struct lustre_md *md); +void cl_inode_fini(struct inode *inode); + +enum cl_lock_mode vvp_mode_from_vma(struct vm_area_struct *vma); +void ll_io_init(struct cl_io *io, const struct file *file, int write); + +void ras_update(struct ll_sb_info *sbi, struct inode *inode, + struct ll_readahead_state *ras, unsigned long index, + unsigned hit); +void ll_ra_count_put(struct ll_sb_info *sbi, unsigned long len); +int ll_is_file_contended(struct file *file); +void ll_ra_stats_inc(struct address_space *mapping, enum ra_stat which); + /* llite/llite_rmtacl.c */ #ifdef CONFIG_FS_POSIX_ACL obd_valid rce_ops2valid(int ops); @@ -912,6 +1049,8 @@ struct ll_statahead_info { * reply */ unsigned int sai_max; /* max ahead of lookup */ unsigned int sai_index; /* index of statahead entry */ + unsigned int sai_index_next; /* index for the next statahead + * entry to be stated */ unsigned int sai_hit; /* hit count */ unsigned int sai_miss; /* miss count: * for "ls -al" case, it includes @@ -929,7 +1068,9 @@ struct ll_statahead_info { * hidden entries */ cfs_waitq_t sai_waitq; /* stat-ahead wait queue */ struct ptlrpc_thread sai_thread; /* stat-ahead thread */ - struct list_head sai_entries; /* stat-ahead entries */ + struct list_head sai_entries_sent; /* entries sent out */ + struct list_head sai_entries_received; /* entries returned */ + struct list_head sai_entries_stated; /* entries stated */ }; int do_statahead_enter(struct inode *dir, struct dentry **dentry, int lookup); @@ -937,13 +1078,19 @@ void ll_statahead_exit(struct dentry *dentry, int result); void ll_stop_statahead(struct inode *inode, void *key); static inline -void ll_d_wakeup(struct dentry *dentry) +void ll_statahead_mark(struct dentry *dentry) { - struct ll_dentry_data *lld = ll_d2d(dentry); + struct ll_inode_info *lli = ll_i2info(dentry->d_parent->d_inode); + struct ll_dentry_data *ldd = ll_d2d(dentry); - LASSERT(dentry->d_op != &ll_init_d_ops); - if (lld != NULL) - cfs_waitq_broadcast(&lld->lld_waitq); + /* not the same process, don't mark */ + if (lli->lli_opendir_pid != cfs_curproc_pid()) + return; + + spin_lock(&lli->lli_lock); + if (likely(lli->lli_sai != NULL && ldd != NULL)) + ldd->lld_sa_generation = lli->lli_sai->sai_generation; + spin_unlock(&lli->lli_lock); } static inline @@ -974,7 +1121,7 @@ int ll_statahead_enter(struct inode *dir, struct dentry **dentryp, int lookup) * "IT_GETATTR" for the first time, and the subsequent "IT_GETATTR" * will bypass interacting with statahead thread for checking: * "lld_sa_generation == lli_sai->sai_generation" - */ + */ if (ldd && lli->lli_sai && ldd->lld_sa_generation == lli->lli_sai->sai_generation) return -EAGAIN; @@ -982,6 +1129,21 @@ int ll_statahead_enter(struct inode *dir, struct dentry **dentryp, int lookup) return do_statahead_enter(dir, dentryp, lookup); } +static void inline ll_dops_init(struct dentry *de, int block) +{ + struct ll_dentry_data *lld = ll_d2d(de); + + if (lld == NULL && block != 0) { + ll_set_dd(de); + lld = ll_d2d(de); + } + + if (lld != NULL) + lld->lld_sa_generation = 0; + + de->d_op = &ll_d_ops; +} + /* llite ioctl register support rountine */ #ifdef __KERNEL__ enum llioc_iter { @@ -997,36 +1159,87 @@ enum llioc_iter { * Parameters: * @magic: Dynamic ioctl call routine will feed this vaule with the pointer * returned to ll_iocontrol_register. Callback functions should use this - * data to check the potential collasion of ioctl cmd. If collasion is + * data to check the potential collasion of ioctl cmd. If collasion is * found, callback function should return LLIOC_CONT. * @rcp: The result of ioctl command. * * Return values: - * If @magic matches the pointer returned by ll_iocontrol_data, the + * If @magic matches the pointer returned by ll_iocontrol_data, the * callback should return LLIOC_STOP; return LLIOC_STOP otherwise. */ -typedef enum llioc_iter (*llioc_callback_t)(struct inode *inode, +typedef enum llioc_iter (*llioc_callback_t)(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg, void *magic, int *rcp); -enum llioc_iter ll_iocontrol_call(struct inode *inode, struct file *file, +enum llioc_iter ll_iocontrol_call(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg, int *rcp); /* export functions */ -/* Register ioctl block dynamatically for a regular file. +/* Register ioctl block dynamatically for a regular file. * * @cmd: the array of ioctl command set * @count: number of commands in the @cmd - * @cb: callback function, it will be called if an ioctl command is found to + * @cb: callback function, it will be called if an ioctl command is found to * belong to the command list @cmd. * * Return vaule: - * A magic pointer will be returned if success; - * otherwise, NULL will be returned. + * A magic pointer will be returned if success; + * otherwise, NULL will be returned. * */ void *ll_iocontrol_register(llioc_callback_t cb, int count, unsigned int *cmd); void ll_iocontrol_unregister(void *magic); #endif +/* lclient compat stuff */ +#define cl_inode_info ll_inode_info +#define cl_i2info(info) ll_i2info(info) +#define cl_inode_mode(inode) ((inode)->i_mode) +#define cl_i2sbi ll_i2sbi +#define cl_isize_read(inode) i_size_read(inode) +#define cl_isize_write(inode,kms) i_size_write(inode, kms) +#define cl_isize_write_nolock(inode,kms) do {(inode)->i_size=(kms);}while(0) + +static inline void cl_isize_lock(struct inode *inode, int lsmlock) +{ + ll_inode_size_lock(inode, lsmlock); +} + +static inline void cl_isize_unlock(struct inode *inode, int lsmlock) +{ + ll_inode_size_unlock(inode, lsmlock); +} + +static inline int cl_merge_lvb(struct inode *inode) +{ + return ll_merge_lvb(inode); +} + +#define cl_inode_atime(inode) LTIME_S((inode)->i_atime) +#define cl_inode_ctime(inode) LTIME_S((inode)->i_ctime) +#define cl_inode_mtime(inode) LTIME_S((inode)->i_mtime) + +struct obd_capa *cl_capa_lookup(struct inode *inode, enum cl_req_type crt); + +/** direct write pages */ +struct ll_dio_pages { + /** page array to be written. we don't support + * partial pages except the last one. */ + struct page **ldp_pages; + /* offset of each page */ + loff_t *ldp_offsets; + /** if ldp_offsets is NULL, it means a sequential + * pages to be written, then this is the file offset + * of the * first page. */ + loff_t ldp_start_offset; + /** how many bytes are to be written. */ + size_t ldp_size; + /** # of pages in the array. */ + int ldp_nr; +}; + +extern ssize_t ll_direct_rw_pages(const struct lu_env *env, struct cl_io *io, + int rw, struct inode *inode, + struct ll_dio_pages *pv); + #endif /* LLITE_INTERNAL_H */