X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Fllite%2Fllite_internal.h;h=2701b7183765787c9fac499926eb0814507120de;hb=31819a287dcfc8b11b7623b399e9fb444174602c;hp=a71ac76f7f157fa2413c4af78be4ec9ba02c5857;hpb=165aa6adfd492618257f7fa24e0bcf2c716c1977;p=fs%2Flustre-release.git diff --git a/lustre/llite/llite_internal.h b/lustre/llite/llite_internal.h index a71ac76..2701b71 100644 --- a/lustre/llite/llite_internal.h +++ b/lustre/llite/llite_internal.h @@ -1,131 +1,414 @@ /* -*- 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 code is issued under the GNU General Public License. - * See the file COPYING in this distribution + * 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 -#include +#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 + +#define LL_IT2STR(it) ((it) ? ldlm_it2str((it)->it_op) : "0") +#define LUSTRE_FPRIVATE(file) ((file)->private_data) + +#ifdef HAVE_VFS_INTENT_PATCHES +static inline struct lookup_intent *ll_nd2it(struct nameidata *nd) +{ + return &nd->intent; +} +#endif + +struct ll_dentry_data { + int lld_cwd_count; + int lld_mnt_count; + struct obd_client_handle lld_cwd_och; + struct obd_client_handle lld_mnt_och; +#ifndef HAVE_VFS_INTENT_PATCHES + struct lookup_intent *lld_it; +#endif + unsigned int lld_sa_generation; +}; + +#define ll_d2d(de) ((struct ll_dentry_data*)((de)->d_fsdata)) + +extern struct file_operations ll_pgcache_seq_fops; + +#define LLI_INODE_MAGIC 0x111d0de5 +#define LLI_INODE_DEAD 0xdeadd00d + +/* remote client permission cache */ +#define REMOTE_PERM_HASHSIZE 16 + +/* llite setxid/access permission for user on remote client */ +struct ll_remote_perm { + struct hlist_node lrp_list; + uid_t lrp_uid; + gid_t lrp_gid; + uid_t lrp_fsuid; + gid_t lrp_fsgid; + int lrp_access_perm; /* MAY_READ/WRITE/EXEC, this + is access permission with + lrp_fsuid/lrp_fsgid. */ +}; + +enum lli_flags { + /* MDS has an authority for the Size-on-MDS attributes. */ + LLIF_MDS_SIZE_LOCK = (1 << 0), + /* Epoch close is postponed. */ + LLIF_EPOCH_PENDING = (1 << 1), + /* DONE WRITING is allowed. */ + LLIF_DONE_WRITING = (1 << 2), + /* Sizeon-on-MDS attributes are changed. An attribute update needs to + * be sent to MDS. */ + LLIF_SOM_DIRTY = (1 << 3), + /* File is contented */ + LLIF_CONTENDED = (1 << 4), + /* Truncate uses server lock for this file */ + LLIF_SRVLOCK = (1 << 5) + +}; + +struct ll_inode_info { + int lli_inode_magic; + struct semaphore lli_size_sem; /* protect open and change size */ + void *lli_size_sem_owner; + struct semaphore lli_write_sem; + char *lli_symlink_name; + __u64 lli_maxbytes; + __u64 lli_ioepoch; + unsigned long lli_flags; + cfs_time_t lli_contention_time; + + /* this lock protects posix_acl, pending_write_llaps, mmap_cnt */ + spinlock_t lli_lock; + 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; + + /* for writepage() only to communicate to fsync */ + int lli_async_rc; + + struct posix_acl *lli_posix_acl; + + /* remote permission hash */ + struct hlist_head *lli_remote_perms; + unsigned long lli_rmtperm_utime; + struct semaphore lli_rmtperm_sem; + + struct list_head lli_dead_list; + + struct semaphore lli_och_sem; /* Protects access to och pointers + and their usage counters */ + /* We need all three because every inode may be opened in different + modes */ + struct obd_client_handle *lli_mds_read_och; + __u64 lli_open_fd_read_count; + struct obd_client_handle *lli_mds_write_och; + __u64 lli_open_fd_write_count; + struct obd_client_handle *lli_mds_exec_och; + __u64 lli_open_fd_exec_count; + + struct inode lli_vfs_inode; + + /* identifying fields for both metadata and data stacks. */ + struct lu_fid lli_fid; + struct lov_stripe_md *lli_smd; + + /* fid capability */ + /* open count currently used by capability only, indicate whether + * capability needs renewal */ + atomic_t lli_open_count; + struct obd_capa *lli_mds_capa; + struct list_head lli_oss_capas; + + /* metadata stat-ahead */ + /* + * "opendir_pid" is the token when lookup/revalid -- I am the owner of + * 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; +}; + +/* + * Locking to guarantee consistency of non-atomic updates to long long i_size, + * consistency between file size and KMS, and consistency within + * ->lli_smd->lsm_oinfo[]'s. + * + * Implemented by ->lli_size_sem and ->lsm_sem, nested in that order. + */ + +void ll_inode_size_lock(struct inode *inode, int lock_lsm); +void ll_inode_size_unlock(struct inode *inode, int unlock_lsm); + +// FIXME: replace the name of this with LL_I to conform to kernel stuff +// static inline struct ll_inode_info *LL_I(struct inode *inode) +static inline struct ll_inode_info *ll_i2info(struct inode *inode) +{ + return container_of(inode, struct ll_inode_info, lli_vfs_inode); +} /* default to about 40meg of readahead on a given system. That much tied * up in 512k readahead requests serviced at 40ms each is about 1GB/s. */ -#define SBI_DEFAULT_RA_MAX ((40 << 20) >> PAGE_CACHE_SHIFT) +#define SBI_DEFAULT_READAHEAD_MAX (40UL << (20 - CFS_PAGE_SHIFT)) + +/* default to read-ahead full files smaller than 2MB on the second read */ +#define SBI_DEFAULT_READAHEAD_WHOLE_MAX (2UL << (20 - CFS_PAGE_SHIFT)) enum ra_stat { RA_STAT_HIT = 0, RA_STAT_MISS, RA_STAT_DISTANT_READPAGE, RA_STAT_MISS_IN_WINDOW, + RA_STAT_FAILED_GRAB_PAGE, RA_STAT_FAILED_MATCH, RA_STAT_DISCARDED, RA_STAT_ZERO_LEN, RA_STAT_ZERO_WINDOW, RA_STAT_EOF, RA_STAT_MAX_IN_FLIGHT, + RA_STAT_WRONG_GRAB_PAGE, _NR_RA_STAT, }; struct ll_ra_info { - unsigned long ra_cur_pages; + atomic_t ra_cur_pages; unsigned long ra_max_pages; - unsigned long ra_stats[_NR_RA_STAT]; + unsigned long ra_max_pages_per_file; + unsigned long ra_max_read_ahead_whole_pages; +}; + +/* 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 */ +#define LL_HIST_MAX 28 +#define LL_HIST_START 12 /* buckets start at 2^12 = 4k */ +#define LL_PROCESS_HIST_MAX 10 +struct per_process_info { + pid_t pid; + struct obd_histogram pp_r_hist; + struct obd_histogram pp_w_hist; +}; + +/* pp_extents[LL_PROCESS_HIST_MAX] will hold the combined process info */ +struct ll_rw_extents_info { + struct per_process_info pp_extents[LL_PROCESS_HIST_MAX + 1]; +}; + +#define LL_OFFSET_HIST_MAX 100 +struct ll_rw_process_info { + pid_t rw_pid; + int rw_op; + loff_t rw_range_start; + loff_t rw_range_end; + loff_t rw_last_file_pos; + loff_t rw_offset; + size_t rw_smallest_extent; + size_t rw_largest_extent; + struct ll_file_data *rw_last_file; }; -/* after roughly how long should we remove an inactive mount? */ -#define GNS_MOUNT_TIMEOUT 120 +enum stats_track_type { + STATS_TRACK_ALL = 0, /* track all processes */ + STATS_TRACK_PID, /* track process with this pid */ + STATS_TRACK_PPID, /* track processes with this ppid */ + STATS_TRACK_GID, /* track processes with this gid */ + STATS_TRACK_LAST, +}; -/* how often should the GNS timer look for mounts to cleanup? */ -#define GNS_TICK_TIMEOUT 1 +/* flags for sbi->ll_flags */ +#define LL_SBI_NOLCK 0x01 /* DLM locking disabled (directio-only) */ +#define LL_SBI_CHECKSUM 0x02 /* checksum each page as it's written */ +#define LL_SBI_FLOCK 0x04 +#define LL_SBI_USER_XATTR 0x08 /* support user xattr */ +#define LL_SBI_ACL 0x10 /* support ACL */ +#define LL_SBI_JOIN 0x20 /* support JOIN */ +#define LL_SBI_RMT_CLIENT 0x40 /* remote client */ +#define LL_SBI_MDS_CAPA 0x80 /* support mds capa */ +#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 +/* default value for lockless_truncate_enable */ +#define SBI_DEFAULT_LOCKLESS_TRUNCATE_ENABLE 1 +#define RCE_HASHES 32 + +struct rmtacl_ctl_entry { + struct list_head rce_list; + pid_t rce_key; /* hash key */ + int rce_ops; /* acl operation type */ +}; + +struct rmtacl_ctl_table { + spinlock_t rct_lock; + struct list_head rct_entries[RCE_HASHES]; +}; -/* how many times GNS will try to wait for 1 second for mount */ -#define GNS_WAIT_ATTEMPTS 10 +#define EE_HASHES 32 + +struct eacl_entry { + struct list_head ee_list; + pid_t ee_key; /* hash key */ + struct lu_fid ee_fid; + int ee_type; /* ACL type for ACCESS or DEFAULT */ + ext_acl_xattr_header *ee_acl; +}; + +struct eacl_table { + spinlock_t et_lock; + struct list_head et_entries[EE_HASHES]; +}; struct ll_sb_info { - /* this protects pglist and max_r_a_pages. It isn't safe to grab from - * interrupt contexts. */ + struct list_head ll_list; + /* this protects pglist and ra_info. It isn't safe to + * grab from interrupt contexts */ spinlock_t ll_lock; - + spinlock_t ll_pp_extent_lock; /* Lock for pp_extent entries */ + spinlock_t ll_process_lock; /* Lock for ll_rw_process_info */ struct obd_uuid ll_sb_uuid; struct obd_export *ll_md_exp; struct obd_export *ll_dt_exp; - struct lov_desc ll_dt_desc; - struct proc_dir_entry *ll_proc_root; - struct lustre_id ll_rootid; /* root lustre id */ - - struct lustre_mount_data *ll_lmd; - char *ll_instance; + struct proc_dir_entry* ll_proc_root; + struct lu_fid ll_root_fid; /* root object fid */ int ll_flags; struct list_head ll_conn_chain; /* per-conn chain of SBs */ + struct lustre_client_ocd ll_lco; - struct hlist_head ll_orphan_dentry_list; /*please don't ask -p*/ + struct list_head ll_orphan_dentry_list; /*please don't ask -p*/ struct ll_close_queue *ll_lcq; - struct lprocfs_stats *ll_stats; /* lprocfs stats counter */ + struct lprocfs_stats *ll_stats; /* lprocfs stats counter */ - unsigned long ll_pglist_gen; - struct list_head ll_pglist; + unsigned long ll_async_page_max; + unsigned long ll_async_page_count; - struct ll_ra_info ll_ra_info; + struct lprocfs_stats *ll_ra_stats; - unsigned int ll_remote; /* remote client? */ - - __u64 ll_audit_mask; - /* times spent waiting for locks in each call site. These are - * all protected by the ll_lock */ - struct obd_service_time ll_read_stime; - struct obd_service_time ll_write_stime; - struct obd_service_time ll_grouplock_stime; - struct obd_service_time ll_seek_stime; - struct obd_service_time ll_setattr_stime; - struct obd_service_time ll_brw_stime; -// struct obd_service_time ll_done_stime; - - int ll_config_version; /* last-applied update */ - - /* list of GNS mounts; protected by the dcache_lock */ - struct list_head ll_mnt_list; - - struct semaphore ll_gns_sem; - spinlock_t ll_gns_lock; - wait_queue_head_t ll_gns_waitq; - atomic_t ll_gns_enabled; - int ll_gns_state; - struct timer_list ll_gns_timer; - struct list_head ll_gns_sbi_head; - struct completion ll_gns_mount_finished; - struct dentry *ll_gns_pending_dentry; - - unsigned long ll_gns_tick; - unsigned long ll_gns_timeout; - - /* path to upcall */ - char ll_gns_upcall[PATH_MAX]; - - /* mount object entry name */ - char ll_gns_oname[PATH_MAX]; - void *ll_crypto_info; -}; + struct ll_ra_info ll_ra_info; + unsigned int ll_namelen; + struct file_operations *ll_fop; -struct ll_gns_ctl { - struct completion gc_starting; - struct completion gc_finishing; +#ifdef HAVE_EXPORT___IGET + struct list_head ll_deathrow; /* inodes to be destroyed (b1443) */ + spinlock_t ll_deathrow_lock; +#endif + /* =0 - hold lock over whole read/write + * >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; + struct ll_rw_process_info ll_rw_process_info[LL_PROCESS_HIST_MAX]; + unsigned int ll_offset_process_count; + struct ll_rw_process_info ll_rw_offset_info[LL_OFFSET_HIST_MAX]; + unsigned int ll_rw_offset_entry_count; + enum stats_track_type ll_stats_track_type; + int ll_stats_track_id; + int ll_rw_stats_on; + + /* metadata stat-ahead */ + unsigned int ll_sa_max; /* max statahead RPCs */ + unsigned int ll_sa_wrong; /* statahead thread stopped for + * low hit ratio */ + unsigned int ll_sa_total; /* statahead thread started + * count */ + unsigned long long ll_sa_blocked; /* ls count waiting for + * statahead */ + unsigned long long ll_sa_cached; /* ls count got in cache */ + unsigned long long ll_sa_hit; /* hit count */ + unsigned long long ll_sa_miss; /* miss count */ + + dev_t ll_sdev_orig; /* save s_dev before assign for + * clustred nfs */ + struct rmtacl_ctl_table ll_rct; + struct eacl_table ll_et; }; -/* mounting states */ -#define LL_GNS_IDLE (1 << 0) -#define LL_GNS_MOUNTING (1 << 1) -#define LL_GNS_FINISHED (1 << 2) +#define LL_DEFAULT_MAX_RW_CHUNK (32 * 1024 * 1024) -/* mounts checking flags */ -#define LL_GNS_UMOUNT (1 << 0) -#define LL_GNS_CHECK (1 << 1) +struct ll_ra_read { + pgoff_t lrr_start; + pgoff_t lrr_count; + struct task_struct *lrr_reader; + struct list_head lrr_linkage; +}; /* * per file-descriptor read-ahead data. @@ -150,7 +433,13 @@ struct ll_readahead_state { * case, it probably doesn't make sense to expand window to * PTLRPC_MAX_BRW_PAGES on the third access. */ - unsigned long ras_consecutive; + unsigned long ras_consecutive_pages; + /* + * number of read requests after the last read-ahead window reset + * As window is reset on each seek, this is effectively the number + * on consecutive read request and is used to trigger read-ahead. + */ + unsigned long ras_consecutive_requests; /* * Parameters of current read-ahead window. Handled by * ras_update(). On the initial access to the file or after a seek, @@ -167,256 +456,302 @@ struct ll_readahead_state { * not covered by DLM lock. */ unsigned long ras_next_readahead; + /* + * Total number of ll_file_read requests issued, reads originating + * due to mmap are not counted in this total. This value is used to + * trigger full file read-ahead after multiple reads to a small file. + */ + unsigned long ras_requests; + /* + * Page index with respect to the current request, these value + * will not be accurate when dealing with reads issued via mmap. + */ + unsigned long ras_request_index; + /* + * list of struct ll_ra_read's one per read(2) call current in + * progress against this file descriptor. Used by read-ahead code, + * 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-| + * ras_stride_offset = offset; + * ras_stride_length = stride_pages + stride_gap; + * ras_stride_pages = stride_pages; + * Note: all these three items are counted by pages. + */ + 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, + * stride read-ahead will be enable + */ + unsigned long ras_consecutive_stride_requests; +}; +struct ll_file_dir { }; -extern kmem_cache_t *ll_file_data_slab; -extern kmem_cache_t *ll_intent_slab; +extern cfs_mem_cache_t *ll_file_data_slab; struct lustre_handle; - struct ll_file_data { struct ll_readahead_state fd_ras; - __u32 fd_flags; 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; extern spinlock_t inode_lock; -extern void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi); extern struct proc_dir_entry *proc_lustre_fs_root; -#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)) -# define hlist_del_init list_del_init -#endif - static inline struct inode *ll_info2i(struct ll_inode_info *lli) { -#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)) return &lli->lli_vfs_inode; -#else - return list_entry(lli, struct inode, u.generic_ip); -#endif } - struct it_cb_data { struct inode *icbd_parent; struct dentry **icbd_childp; obd_id hash; }; -#define LLAP_MAGIC 98764321 +__u32 ll_i2suppgid(struct inode *i); +void ll_i2gids(__u32 *suppgids, struct inode *i1,struct inode *i2); -struct ll_async_page { - int llap_magic; - void *llap_cookie; - struct page *llap_page; - struct list_head llap_pending_write; - /* only trust these if the page lock is providing exclusion */ - unsigned llap_write_queued:1, - llap_defer_uptodate:1, - llap_origin:3, - llap_ra_used:1; - - struct list_head llap_proc_item; -}; +#define LLAP_MAGIC 98764321 -enum { - LLAP_ORIGIN_UNKNOWN = 0, - LLAP_ORIGIN_READPAGE, - LLAP_ORIGIN_READAHEAD, - LLAP_ORIGIN_COMMIT_WRITE, - LLAP_ORIGIN_WRITEPAGE, - LLAP__ORIGIN_MAX, +extern cfs_mem_cache_t *ll_async_page_slab; +extern size_t ll_async_page_slab_size; + +#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; }; -/* - * remote ACL stuff - */ -#define REMOTE_ACL_HASHSIZE 16 - -struct remote_acl { - struct list_head ra_perm_cache[REMOTE_ACL_HASHSIZE]; - spinlock_t ra_lock; - /* we use one sem per inode, it's kind of coarse: one user must - * wait if another user is updating the perm on this inode. but - * I guess this is fine is real world usage. - */ - struct semaphore ra_update_sem; -}; +#define ll_register_cache(cache) do { \ + struct cache_definition *c = (cache); \ + c->shrinker = set_shrinker(DEFAULT_SEEKS, c->shrink); \ +} while(0) -struct lustre_remote_perm { - struct list_head lrp_list; - uid_t lrp_auth_uid; /* authenticated uid */ - gid_t lrp_auth_gid; /* authenticated gid */ - uint16_t lrp_perm; /* permission bits */ - uint16_t lrp_valid:1, /* lrp_perm is valid */ - lrp_setuid:1, /* allow setuid */ - lrp_setgid:1; /* allow setgid */ - struct list_head lrp_setxid_perms; /* setxid perms list */ -}; +#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) +#endif -struct remote_perm_setxid { - struct list_head list; /* permission list */ - uid_t uid; - gid_t gid; - uint16_t perm; -}; +void ll_ra_read_in(struct file *f, struct ll_ra_read *rar); +void ll_ra_read_ex(struct file *f, struct ll_ra_read *rar); +struct ll_ra_read *ll_ra_read_get(struct file *f); /* llite/lproc_llite.c */ +#ifdef LPROCFS int lprocfs_register_mountpoint(struct proc_dir_entry *parent, - struct super_block *sb, char *lov, - char *lmv); + struct super_block *sb, char *osc, char *mdc); void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi); +void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, int count); +void lprocfs_llite_init_vars(struct lprocfs_static_vars *lvars); +#else +static inline int lprocfs_register_mountpoint(struct proc_dir_entry *parent, + struct super_block *sb, char *osc, char *mdc){return 0;} +static inline void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi) {} +static void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, int count) {} +static void lprocfs_llite_init_vars(struct lprocfs_static_vars *lvars) +{ + memset(lvars, 0, sizeof(*lvars)); +} +#endif + /* llite/dir.c */ +static inline void ll_put_page(struct page *page) +{ + kunmap(page); + page_cache_release(page); +} + extern struct file_operations ll_dir_operations; extern struct inode_operations ll_dir_inode_operations; - +struct page *ll_get_dir_page(struct inode *dir, __u64 hash, int exact, + struct ll_dir_chain *chain); /* llite/namei.c */ int ll_objects_destroy(struct ptlrpc_request *request, - struct inode *dir, int offset); + struct inode *dir); struct inode *ll_iget(struct super_block *sb, ino_t hash, struct lustre_md *lic); -struct dentry *ll_find_alias(struct inode *, struct dentry *); -int ll_mdc_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *, - void *data, int flag); +int ll_md_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *, + void *data, int flag); +#ifndef HAVE_VFS_INTENT_PATCHES +struct lookup_intent *ll_convert_intent(struct open_intent *oit, + int lookup_flags); +#endif +int ll_lookup_it_finish(struct ptlrpc_request *request, + struct lookup_intent *it, void *data); +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); -void ll_ap_completion(void *data, int cmd, struct obdo *oa, int rc); +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_from_cookie(void *cookie); -struct ll_async_page *llap_from_page(struct page *page, unsigned origin); void ll_readahead_init(struct inode *inode, struct ll_readahead_state *ras); - -struct lpage_data *lpd_cast_private(struct page *page); - -void ll_ra_accounting(struct page *page, 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; +extern struct file_operations ll_file_operations_flock; +extern struct file_operations ll_file_operations_noflock; extern struct inode_operations ll_file_inode_operations; -int ll_md_real_close(struct obd_export *md_exp, - struct inode *inode, int flags); -extern int ll_inode_revalidate_it(struct dentry *); -int ll_setxattr(struct dentry *, const char *, const void *, - size_t, int); -int ll_getxattr(struct dentry *, const char *, void *, size_t); -int ll_listxattr(struct dentry *, char *, size_t); -int ll_removexattr(struct dentry *, const char *); -extern int ll_inode_permission(struct inode *, int, struct nameidata *); -int ll_get_acl(struct inode *, struct posix_acl **acl, - struct ptlrpc_request **req); -int ll_refresh_lsm(struct inode *inode, struct lov_stripe_md *lsm); -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, - struct obd_service_time *); -int ll_extent_unlock(struct ll_file_data *, struct inode *, - struct lov_stripe_md *, int mode, struct lustre_handle *); +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_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_glimpse_size(struct inode *inode); -int ll_local_open(struct file *file, struct lookup_intent *it, +int ll_glimpse_ioctl(struct ll_sb_info *sbi, + struct lov_stripe_md *lsm, lstat_t *st); +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); +int ll_release_openhandle(struct dentry *, struct lookup_intent *); int ll_md_close(struct obd_export *md_exp, struct inode *inode, struct file *file); -int ll_md_och_close(struct obd_export *md_exp, struct inode *inode, - struct obd_client_handle *och, int dirty); -void ll_och_fill(struct inode *inode, struct lookup_intent *it, - struct obd_client_handle *och); -int ll_set_audit(struct inode *, __u64); -int ll_audit_log(struct inode *, audit_op, int); - -int ll_getxattr_internal(struct inode *inode, const char *name, - void *value, size_t size, __u64 valid); -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) +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 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 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); -#endif -void ll_stime_record(struct ll_sb_info *sbi, struct timeval *start, - struct obd_service_time *stime); +struct ll_file_data *ll_file_data_get(void); +int ll_inode_permission(struct inode *inode, int mask, struct nameidata *nd); +int ll_lov_setstripe_ea_info(struct inode *inode, struct file *file, + int flags, struct lov_user_md *lum, + int lum_size); +int ll_lov_getstripe_ea_info(struct inode *inode, const char *filename, + struct lov_mds_md **lmm, int *lmm_size, + 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 *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 */ +/* 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; void ll_intent_drop_lock(struct lookup_intent *); void ll_intent_release(struct lookup_intent *); -int ll_intent_alloc(struct lookup_intent *); -void ll_intent_free(struct lookup_intent *it); +int ll_drop_dentry(struct dentry *dentry); extern void ll_set_dd(struct dentry *de); +int ll_drop_dentry(struct dentry *dentry); void ll_unhash_aliases(struct inode *); void ll_frob_intent(struct lookup_intent **itp, struct lookup_intent *deft); void ll_lookup_finish_locks(struct lookup_intent *it, struct dentry *dentry); -int revalidate_it_finish(struct ptlrpc_request *request, int offset, - struct lookup_intent *it, struct dentry *de); - - -/* llite/llite_gns.c */ -int ll_gns_start_thread(void); -void ll_gns_stop_thread(void); - -int ll_gns_mount_object(struct dentry *dentry, - struct vfsmount *mnt); -int ll_gns_umount_object(struct vfsmount *mnt); - -int ll_gns_check_mounts(struct ll_sb_info *sbi, - int flags); - -void ll_gns_timer_callback(unsigned long data); -void ll_gns_add_timer(struct ll_sb_info *sbi); -void ll_gns_del_timer(struct ll_sb_info *sbi); +int ll_dcompare(struct dentry *parent, struct qstr *d_name, struct qstr *name); +int ll_revalidate_it_finish(struct ptlrpc_request *request, + struct lookup_intent *it, struct dentry *de); /* llite/llite_lib.c */ extern struct super_operations lustre_super_operations; char *ll_read_opt(const char *opt, char *data); -int ll_set_opt(const char *opt, char *data, int fl); -void ll_options(char *options, char **ost, char **mds, char **gss, - char **mds_sec, char **oss_sec, int *async, int *flags); void ll_lli_init(struct ll_inode_info *lli); -int ll_fill_super(struct super_block *sb, void *data, int silent); -int lustre_fill_super(struct super_block *sb, void *data, int silent); -void lustre_put_super(struct super_block *sb); +int ll_fill_super(struct super_block *sb); +void ll_put_super(struct super_block *sb); +void ll_kill_super(struct super_block *sb); struct inode *ll_inode_from_lock(struct ldlm_lock *lock); void ll_clear_inode(struct inode *inode); -int ll_attr2inode(struct inode *inode, struct iattr *attr, int trunc); int ll_setattr_raw(struct inode *inode, struct iattr *attr); int ll_setattr(struct dentry *de, struct iattr *attr); +#ifndef HAVE_STATFS_DENTRY_PARAM int ll_statfs(struct super_block *sb, struct kstatfs *sfs); +#else +int ll_statfs(struct dentry *de, struct kstatfs *sfs); +#endif int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs, - unsigned long maxage); -void ll_update_inode(struct inode *inode, struct lustre_md *); -int ll_fetch_remote_perm(struct inode *inode, struct ptlrpc_request *req, - uint16_t *perm); -int it_disposition(struct lookup_intent *it, int flag); -void it_set_disposition(struct lookup_intent *it, int flag); + __u64 max_age, __u32 flags); +void ll_update_inode(struct inode *inode, struct lustre_md *md); void ll_read_inode2(struct inode *inode, void *opaque); void ll_delete_inode(struct inode *inode); int ll_iocontrol(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg); +int ll_flush_ctx(struct inode *inode); +#ifdef HAVE_UMOUNTBEGIN_VFSMOUNT +void ll_umount_begin(struct vfsmount *vfsmnt, int flags); +#else void ll_umount_begin(struct super_block *sb); -int ll_prep_inode(struct obd_export *, struct obd_export *, struct inode **inode, - struct ptlrpc_request *req, int offset, struct super_block *); +#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 *); +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); +struct md_op_data *ll_prep_md_op_data(struct md_op_data *op_data, + struct inode *i1, struct inode *i2, + const char *name, int namelen, + int mode, __u32 opc, void *data); +void ll_finish_md_op_data(struct md_op_data *op_data); + +/* llite/llite_nfs.c */ +extern struct export_operations lustre_export_operations; __u32 get_uuid2int(const char *name, int len); struct dentry *ll_fh_to_dentry(struct super_block *sb, __u32 *data, int len, int fhtype, int parent); int ll_dentry_to_fh(struct dentry *, __u32 *datap, int *lenp, int need_parent); -int null_if_equal(struct ldlm_lock *lock, void *data); -int ll_process_config_update(struct ll_sb_info *sbi, int clean); -int ll_show_options(struct seq_file *m, struct vfsmount *mnt); -int ll_flush_cred(struct inode *inode); - -int ll_remote_acl_permission(struct inode *inode, int mode); -int ll_remote_acl_update(struct inode *inode, struct mds_remote_perm *perm); -void ll_inode_invalidate_acl(struct inode *inode); /* llite/special.c */ extern struct inode_operations ll_special_inode_operations; @@ -433,76 +768,132 @@ extern struct inode_operations ll_fast_symlink_inode_operations; /* llite/llite_close.c */ struct ll_close_queue { spinlock_t lcq_lock; - struct list_head lcq_list; + struct list_head lcq_head; wait_queue_head_t lcq_waitq; struct completion lcq_comp; + atomic_t lcq_stop; }; -void llap_write_pending(struct inode *inode, struct ll_async_page *llap); -void llap_write_complete(struct inode *inode, struct ll_async_page *llap); -void ll_open_complete(struct inode *inode); -int ll_is_inode_dirty(struct inode *inode); -void ll_try_done_writing(struct inode *inode); -void ll_queue_done_writing(struct inode *inode); -void ll_close_thread_stop(struct ll_close_queue *lcq); -int ll_close_thread_start(struct ll_close_queue **lcq_ret); +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); /* llite/llite_mmap.c */ -#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)) typedef struct rb_root rb_root_t; typedef struct rb_node rb_node_t; -#endif - -struct ll_lock_tree_node { - rb_node_t lt_node; - struct list_head lt_locked_item; - __u64 lt_oid; - ldlm_policy_data_t lt_policy; - struct lustre_handle lt_lockh; - ldlm_mode_t lt_mode; -}; +struct ll_lock_tree_node; struct ll_lock_tree { rb_root_t lt_root; struct list_head lt_locked_list; struct ll_file_data *lt_fd; }; -int ll_teardown_mmaps(struct address_space *mapping, __u64 first, - __u64 last); + +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, struct inode *inode, - const char *buf, size_t count, int ast_flags); -int ll_tree_unlock(struct ll_lock_tree *tree, struct inode *inode); - -int ll_get_fid(struct obd_export *exp, struct lustre_id *idp, - char *filename, struct lustre_id *ret); - -/* generic */ -#define LL_SBI_NOLCK 0x1 -#define LL_SBI_READAHEAD 0x2 -#define LL_SUPER_MAGIC 0x0BD00BD0 -#define LL_MAX_BLKSIZE (4UL * 1024 * 1024) - -#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)) -#define ll_s2sbi(sb) ((struct ll_sb_info *)((sb)->s_fs_info)) -#define ll_set_sbi(sb, sbi) ((sb)->s_fs_info = sbi) +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) + static inline __u64 ll_ts2u64(struct timespec *time) { __u64 t = time->tv_sec; return t; } -#else /* 2.4 here */ -#define ll_s2sbi(sb) ((struct ll_sb_info *)((sb)->u.generic_sbp)) -#define ll_set_sbi(sb, sbi) ((sb)->u.generic_sbp = sbi) -static inline __u64 ll_ts2u64(time_t *time) -{ - return *time; -} -#endif /* don't need an addref as the sb_info should be holding one */ static inline struct obd_export *ll_s2dtexp(struct super_block *sb) @@ -516,7 +907,7 @@ static inline struct obd_export *ll_s2mdexp(struct super_block *sb) return ll_s2sbi(sb)->ll_md_exp; } -static inline struct client_obd *sbi2md(struct ll_sb_info *sbi) +static inline struct client_obd *sbi2mdc(struct ll_sb_info *sbi) { struct obd_device *obd = sbi->ll_md_exp->exp_obd; if (obd == NULL) @@ -539,9 +930,19 @@ static inline struct obd_export *ll_i2mdexp(struct inode *inode) { return ll_s2mdexp(inode->i_sb); } + +static inline struct lu_fid *ll_inode2fid(struct inode *inode) +{ + struct lu_fid *fid; + LASSERT(inode != NULL); + fid = &ll_i2info(inode)->lli_fid; + LASSERT(fid_is_igif(fid) || fid_ver(fid) == 0); + return fid; +} + static inline int ll_mds_max_easize(struct super_block *sb) { - return sbi2md(ll_s2sbi(sb))->cl_max_mds_easize; + return sbi2mdc(ll_s2sbi(sb))->cl_max_mds_easize; } static inline __u64 ll_file_maxbytes(struct inode *inode) @@ -549,169 +950,296 @@ static inline __u64 ll_file_maxbytes(struct inode *inode) return ll_i2info(inode)->lli_maxbytes; } +/* llite/xattr.c */ +int ll_setxattr(struct dentry *dentry, const char *name, + const void *value, size_t size, int flags); +ssize_t ll_getxattr(struct dentry *dentry, const char *name, + void *buffer, size_t size); +ssize_t ll_listxattr(struct dentry *dentry, char *buffer, size_t size); +int ll_removexattr(struct dentry *dentry, const char *name); -static inline void -ll_inode2id(struct lustre_id *id, struct inode *inode) -{ - struct lustre_id *lid = &ll_i2info(inode)->lli_id; +/* llite/remote_perm.c */ +extern cfs_mem_cache_t *ll_remote_perm_cachep; +extern cfs_mem_cache_t *ll_rmtperm_hash_cachep; - mdc_pack_id(id, inode->i_ino, inode->i_generation, - (inode->i_mode & S_IFMT), id_group(lid), - id_fid(lid)); -} +struct hlist_head *alloc_rmtperm_hash(void); +void free_rmtperm_hash(struct hlist_head *hash); +int ll_update_remote_perm(struct inode *inode, struct mdt_remote_perm *perm); +int lustre_check_remote_perm(struct inode *inode, int mask); -static inline void -ll_prepare_mdc_data(struct mdc_op_data *data, struct inode *i1, - struct inode *i2, const char *name, int namelen, - int mode) -{ - LASSERT(i1); - ll_inode2id(&data->id1, i1); +/* 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); - /* it could be directory with mea */ - data->mea1 = ll_i2info(i1)->lli_mea; +/* llite/llite_capa.c */ +extern cfs_timer_t ll_capa_timer; - if (i2) { - ll_inode2id(&data->id2, i2); - data->mea2 = ll_i2info(i2)->lli_mea; - } +int ll_capa_thread_start(void); +void ll_capa_thread_stop(void); +void ll_capa_timer_callback(unsigned long unused); - data->valid = 0; - data->name = name; - data->namelen = namelen; - data->create_mode = mode; - data->mod_time = LTIME_S(CURRENT_TIME); -} +struct obd_capa *ll_add_capa(struct inode *inode, struct obd_capa *ocapa); +int ll_update_capa(struct obd_capa *ocapa, struct lustre_capa *capa); -struct crypto_helper_ops { - int (*init_it_key)(struct inode *inode, struct lookup_intent *it); - int (*create_key)(struct inode *dir, mode_t mode, void **key, - int* key_size); - int (*get_mac)(struct inode *inode, struct iattr *iattr, void*value, - int size, void **key, int* key_size); - int (*decrypt_key)(struct inode *inode, struct lookup_intent *it); - int (*init_inode_key)(struct inode *inode, void *md_key); - int (*destroy_key)(struct inode *inode); -}; +void ll_capa_open(struct inode *inode); +void ll_capa_close(struct inode *inode); -/*llite crypto ops for crypto api*/ -struct ll_crypto_info { - struct obd_export *ll_gt_exp; - struct list_head ll_cops_list; - struct crypto_helper_ops *ll_cops; - int ll_c_flags; -}; -#define ll_page2key(page) ((ll_i2info(page->mapping->host))->lli_key_info) -static inline struct ll_crypto_info* ll_s2crpi(struct super_block *sb) -{ - return (struct ll_crypto_info*)ll_s2sbi(sb)->ll_crypto_info; -} -static inline struct ll_crypto_info* ll_i2crpi(struct inode *inode) -{ - return (struct ll_crypto_info*)ll_i2sbi(inode)->ll_crypto_info; -} +struct obd_capa *ll_mdscapa_get(struct inode *inode); +struct obd_capa *ll_osscapa_get(struct inode *inode, __u64 opc); -static inline struct crypto_helper_ops* ll_i2crpops(struct inode *inode) -{ - return ll_i2crpi(inode)->ll_cops; -} +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); -static inline struct crypto_helper_ops* ll_s2crpops(struct super_block *sb) -{ - return ll_s2crpi(sb)->ll_cops; -} +/* llite/llite_cl.c */ +extern struct lu_device_type vvp_device_type; -static inline struct obd_export *ll_s2gsexp(struct super_block *sb) -{ - struct ll_crypto_info *llci = ll_s2crpi(sb); - if (llci) - return llci->ll_gt_exp; - return NULL; -} -static inline struct obd_export *ll_i2gsexp(struct inode *inode) -{ - return ll_s2gsexp(inode->i_sb); -} +/** + * 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); +struct rmtacl_ctl_entry *rct_search(struct rmtacl_ctl_table *rct, pid_t key); +int rct_add(struct rmtacl_ctl_table *rct, pid_t key, int ops); +int rct_del(struct rmtacl_ctl_table *rct, pid_t key); +void rct_init(struct rmtacl_ctl_table *rct); +void rct_fini(struct rmtacl_ctl_table *rct); + +void ee_free(struct eacl_entry *ee); +int ee_add(struct eacl_table *et, pid_t key, struct lu_fid *fid, int type, + ext_acl_xattr_header *header); +struct eacl_entry *et_search_del(struct eacl_table *et, pid_t key, + struct lu_fid *fid, int type); +void et_search_free(struct eacl_table *et, pid_t key); +void et_init(struct eacl_table *et); +void et_fini(struct eacl_table *et); +#endif + +/* statahead.c */ + +#define LL_SA_RPC_MIN 2 +#define LL_SA_RPC_DEF 32 +#define LL_SA_RPC_MAX 8192 + +/* per inode struct, for dir only */ +struct ll_statahead_info { + struct inode *sai_inode; + unsigned int sai_generation; /* generation for statahead */ + atomic_t sai_refcount; /* when access this struct, hold + * refcount */ + unsigned int sai_sent; /* stat requests sent count */ + unsigned int sai_replied; /* stat requests which received + * 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 + * hidden dentry miss; + * for "ls -l" case, it does not + * include hidden dentry miss. + * "sai_miss_hidden" is used for + * the later case. + */ + unsigned int sai_consecutive_miss; /* consecutive miss */ + unsigned int sai_miss_hidden;/* "ls -al", but first dentry + * is not a hidden one */ + unsigned int sai_skip_hidden;/* skipped hidden dentry count */ + unsigned int sai_ls_all:1; /* "ls -al", do stat-ahead for + * hidden entries */ + cfs_waitq_t sai_waitq; /* stat-ahead wait queue */ + struct ptlrpc_thread sai_thread; /* stat-ahead thread */ + 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); +void ll_statahead_exit(struct dentry *dentry, int result); +void ll_stop_statahead(struct inode *inode, void *key); static inline -int ll_crypto_init_it_key(struct inode *inode, struct lookup_intent *it) +void ll_statahead_mark(struct dentry *dentry) { - struct ll_crypto_info *lci = ll_i2crpi(inode); - if (lci) { - struct crypto_helper_ops *ops = lci->ll_cops;; - if (ops && ops->init_it_key) - return ops->init_it_key(inode, it); - } - return 0; + struct ll_inode_info *lli = ll_i2info(dentry->d_parent->d_inode); + struct ll_dentry_data *ldd = ll_d2d(dentry); + + /* 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 -int ll_crypto_create_key(struct inode *inode, mode_t mode, void **key, - int* key_size) +int ll_statahead_enter(struct inode *dir, struct dentry **dentryp, int lookup) { - struct ll_crypto_info *lci = ll_i2crpi(inode); - if (lci) { - struct crypto_helper_ops *ops = lci->ll_cops;; - if (ops && ops->create_key) - return ops->create_key(inode, mode, key, key_size); - } - return 0; + struct ll_sb_info *sbi = ll_i2sbi(dir); + struct ll_inode_info *lli = ll_i2info(dir); + struct ll_dentry_data *ldd = ll_d2d(*dentryp); + + if (sbi->ll_sa_max == 0) + return -ENOTSUPP; + + /* not the same process, don't statahead */ + if (lli->lli_opendir_pid != cfs_curproc_pid()) + return -EBADF; + + /* + * When "ls" a dentry, the system trigger more than once "revalidate" or + * "lookup", for "getattr", for "getxattr", and maybe for others. + * Under patchless client mode, the operation intent is not accurate, + * it maybe misguide the statahead thread. For example: + * The "revalidate" call for "getattr" and "getxattr" of a dentry maybe + * have the same operation intent -- "IT_GETATTR". + * In fact, one dentry should has only one chance to interact with the + * statahead thread, otherwise the statahead windows will be confused. + * The solution is as following: + * Assign "lld_sa_generation" with "sai_generation" when a dentry + * "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; + + return do_statahead_enter(dir, dentryp, lookup); } -static inline -int ll_crypto_get_mac(struct inode *inode, struct iattr *attr, void *acl, - int acl_size, void **mac, int *mac_size) +static void inline ll_dops_init(struct dentry *de, int block) { - struct ll_crypto_info *lci = ll_i2crpi(inode); - if (lci) { - struct crypto_helper_ops *ops = lci->ll_cops; - if (ops && ops->get_mac) - return ops->get_mac(inode, attr, acl, acl_size, - mac, mac_size); + struct ll_dentry_data *lld = ll_d2d(de); + + if (lld == NULL && block != 0) { + ll_set_dd(de); + lld = ll_d2d(de); } - return 0; + + if (lld != NULL) + lld->lld_sa_generation = 0; + + de->d_op = &ll_d_ops; } -static inline -int ll_crypto_decrypt_key(struct inode *inode, struct lookup_intent *it) +/* llite ioctl register support rountine */ +#ifdef __KERNEL__ +enum llioc_iter { + LLIOC_CONT = 0, + LLIOC_STOP +}; + +#define LLIOC_MAX_CMD 256 + +/* + * Rules to write a callback function: + * + * 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 + * 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 + * callback should return LLIOC_STOP; return LLIOC_STOP otherwise. + */ +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, + unsigned int cmd, unsigned long arg, int *rcp); + +/* export functions */ +/* 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 + * belong to the command list @cmd. + * + * Return vaule: + * 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) { - struct ll_crypto_info *lci = ll_i2crpi(inode); - if (lci) { - struct crypto_helper_ops *ops = lci->ll_cops; - if (ops && ops->decrypt_key) - return ops->decrypt_key(inode, it); - } - return 0; + ll_inode_size_lock(inode, lsmlock); } -static inline -int ll_crypto_init_inode_key(struct inode *inode, void *md_key) +static inline void cl_isize_unlock(struct inode *inode, int lsmlock) { - struct ll_crypto_info *lci = ll_i2crpi(inode); - if (lci) { - struct crypto_helper_ops *ops = lci->ll_cops; - if (ops && ops->init_inode_key) - return ops->init_inode_key(inode, md_key); - } - return 0; + ll_inode_size_unlock(inode, lsmlock); } -static inline -int ll_crypto_destroy_inode_key(struct inode *inode) +static inline int cl_merge_lvb(struct inode *inode) { - struct ll_crypto_info *lci = ll_i2crpi(inode); - if (lci) { - struct crypto_helper_ops *ops = lci->ll_cops; - if (ops && ops->destroy_key) - return ops->destroy_key(inode); - } - return 0; + return ll_merge_lvb(inode); } -int lustre_init_crypto(struct super_block *sb, char *gkc, - struct obd_connect_data *data, int async); -int lustre_destroy_crypto(struct super_block *sb); -int ll_set_sb_gksinfo(struct super_block *sb, char *type); -/* pass this flag to ll_md_real_close() to send close rpc right away */ -#define FMODE_SYNC 00000010 +#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 */