/* * GPL HEADER START * * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 only, * as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License version 2 for more details (a copy is included * in the LICENSE file that accompanied this code). * * You should have received a copy of the GNU General Public License * version 2 along with this program; If not, see * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf * * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * * GPL HEADER END */ /* * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. * Use is subject to license terms. * * Copyright (c) 2011, 2015, Intel Corporation. */ /* * 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 /* for s2sbi */ #include #include /* for struct cl_lock_descr and struct cl_io */ #include #include #include #include #include #include #include "vvp_internal.h" #include "range_lock.h" #ifndef FMODE_EXEC #define FMODE_EXEC 0 #endif #ifndef VM_FAULT_RETRY #define VM_FAULT_RETRY 0 #endif /* Kernel 3.1 kills LOOKUP_CONTINUE, LOOKUP_PARENT is equivalent to it. * seem kernel commit 49084c3bb2055c401f3493c13edae14d49128ca0 */ #ifndef LOOKUP_CONTINUE #define LOOKUP_CONTINUE LOOKUP_PARENT #endif /** Only used on client-side for indicating the tail of dir hash/offset. */ #define LL_DIR_END_OFF 0x7fffffffffffffffULL #define LL_DIR_END_OFF_32BIT 0x7fffffffUL /* 4UL * 1024 * 1024 */ #define LL_MAX_BLKSIZE_BITS 22 #define LL_IT2STR(it) ((it) ? ldlm_it2str((it)->it_op) : "0") #define LUSTRE_FPRIVATE(file) ((file)->private_data) struct ll_dentry_data { struct lookup_intent *lld_it; unsigned int lld_sa_generation; unsigned int lld_invalid:1; struct rcu_head lld_rcu_head; }; #define ll_d2d(de) ((struct ll_dentry_data*)((de)->d_fsdata)) #define LLI_INODE_MAGIC 0x111d0de5 #define LLI_INODE_DEAD 0xdeadd00d /* remote client permission cache */ #define REMOTE_PERM_HASHSIZE 16 struct ll_getname_data { #ifdef HAVE_DIR_CONTEXT struct dir_context ctx; #endif char *lgd_name; /* points to a buffer with NAME_MAX+1 size */ struct lu_fid lgd_fid; /* target fid we are looking for */ int lgd_found; /* inode matched? */ }; /* 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. */ }; struct ll_grouplock { struct lu_env *lg_env; struct cl_io *lg_io; struct cl_lock *lg_lock; unsigned long lg_gid; }; struct ll_inode_info { __u32 lli_inode_magic; spinlock_t lli_lock; volatile unsigned long lli_flags; struct posix_acl *lli_posix_acl; struct hlist_head *lli_remote_perms; struct mutex lli_rmtperm_mutex; /* identifying fields for both metadata and data stacks. */ struct lu_fid lli_fid; /* master inode fid for stripe directory */ struct lu_fid lli_pfid; /* open count currently used by capability only, indicate whether * capability needs renewal */ atomic_t lli_open_count; cfs_time_t lli_rmtperm_time; /* We need all three because every inode may be opened in different * modes */ struct obd_client_handle *lli_mds_read_och; struct obd_client_handle *lli_mds_write_och; struct obd_client_handle *lli_mds_exec_och; __u64 lli_open_fd_read_count; __u64 lli_open_fd_write_count; __u64 lli_open_fd_exec_count; /* Protects access to och pointers and their usage counters */ struct mutex lli_och_mutex; struct inode lli_vfs_inode; /* the most recent timestamps obtained from mds */ s64 lli_atime; s64 lli_mtime; s64 lli_ctime; spinlock_t lli_agl_lock; /* Try to make the d::member and f::member are aligned. Before using * these members, make clear whether it is directory or not. */ union { /* for directory */ struct { /* serialize normal readdir and statahead-readdir. */ struct mutex lli_readdir_mutex; /* metadata statahead */ /* 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; /* protect statahead stuff. */ spinlock_t lli_sa_lock; /* "opendir_pid" is the token when lookup/revalid * -- I am the owner of dir statahead. */ pid_t lli_opendir_pid; /* stat will try to access statahead entries or start * statahead if this flag is set, and this flag will be * set upon dir open, and cleared when dir is closed, * statahead hit ratio is too low, or start statahead * thread failed. */ unsigned int lli_sa_enabled:1; /* generation for statahead */ unsigned int lli_sa_generation; /* directory stripe information */ struct lmv_stripe_md *lli_lsm_md; /* default directory stripe offset. This is extracted * from the "dmv" xattr in order to decide which MDT to * create a subdirectory on. The MDS itself fetches * "dmv" and gets the rest of the default layout itself * (count, hash, etc). */ __u32 lli_def_stripe_offset; }; /* for non-directory */ struct { struct mutex lli_size_mutex; char *lli_symlink_name; /* * struct rw_semaphore { * signed long count; // align d.d_def_acl * spinlock_t wait_lock; // align d.d_sa_lock * struct list_head wait_list; * } */ struct rw_semaphore lli_trunc_sem; struct range_lock_tree lli_write_tree; struct rw_semaphore lli_glimpse_sem; cfs_time_t lli_glimpse_time; struct list_head lli_agl_list; __u64 lli_agl_index; /* for writepage() only to communicate to fsync */ int lli_async_rc; /* * whenever a process try to read/write the file, the * jobid of the process will be saved here, and it'll * be packed into the write PRC when flush later. * * so the read/write statistics for jobid will not be * accurate if the file is shared by different jobs. */ char lli_jobid[LUSTRE_JOBID_SIZE]; }; }; /* XXX: For following frequent used members, although they maybe special * used for non-directory object, it is some time-wasting to check * whether the object is directory or not before using them. On the * other hand, currently, sizeof(f) > sizeof(d), it cannot reduce * the "ll_inode_info" size even if moving those members into u.f. * So keep them out side. * * In the future, if more members are added only for directory, * some of the following members can be moved into u.f. */ struct cl_object *lli_clob; /* mutex to request for layout lock exclusively. */ struct mutex lli_layout_mutex; /* Layout version, protected by lli_layout_lock */ __u32 lli_layout_gen; spinlock_t lli_layout_lock; struct rw_semaphore lli_xattrs_list_rwsem; struct mutex lli_xattrs_enq_lock; struct list_head lli_xattrs; /* ll_xattr_entry->xe_list */ }; static inline __u32 ll_layout_version_get(struct ll_inode_info *lli) { __u32 gen; spin_lock(&lli->lli_layout_lock); gen = lli->lli_layout_gen; spin_unlock(&lli->lli_layout_lock); return gen; } static inline void ll_layout_version_set(struct ll_inode_info *lli, __u32 gen) { spin_lock(&lli->lli_layout_lock); lli->lli_layout_gen = gen; spin_unlock(&lli->lli_layout_lock); } enum ll_file_flags { /* File data is modified. */ LLIF_DATA_MODIFIED = 0, /* File is being restored */ LLIF_FILE_RESTORING = 1, /* Xattr cache is attached to the file */ LLIF_XATTR_CACHE = 2, }; static inline void ll_file_set_flag(struct ll_inode_info *lli, enum ll_file_flags flag) { set_bit(flag, &lli->lli_flags); } static inline void ll_file_clear_flag(struct ll_inode_info *lli, enum ll_file_flags flag) { clear_bit(flag, &lli->lli_flags); } static inline bool ll_file_test_flag(struct ll_inode_info *lli, enum ll_file_flags flag) { return test_bit(flag, &lli->lli_flags); } static inline bool ll_file_test_and_clear_flag(struct ll_inode_info *lli, enum ll_file_flags flag) { return test_and_clear_bit(flag, &lli->lli_flags); } int ll_xattr_cache_destroy(struct inode *inode); int ll_xattr_cache_get(struct inode *inode, const char *name, char *buffer, size_t size, __u64 valid); int ll_init_security(struct dentry *dentry, struct inode *inode, struct inode *dir); /* * Locking to guarantee consistency of non-atomic updates to long long i_size, * consistency between file size and KMS. * * Implemented by ->lli_size_mutex and ->lsm_lock, nested in that order. */ void ll_inode_size_lock(struct inode *inode); void ll_inode_size_unlock(struct inode *inode); // 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_READAHEAD_MAX (40UL << (20 - PAGE_CACHE_SHIFT)) /* default to read-ahead full files smaller than 2MB on the second read */ #define SBI_DEFAULT_READAHEAD_WHOLE_MAX (2UL << (20 - PAGE_CACHE_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, RA_STAT_FAILED_REACH_END, _NR_RA_STAT, }; struct ll_ra_info { 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; }; /* 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; }; 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, }; /* 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_RMT_CLIENT 0x40 /* remote client */ #define LL_SBI_MDS_CAPA 0x80 /* support mds capa, obsolete */ #define LL_SBI_OSS_CAPA 0x100 /* support oss capa, obsolete */ #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 */ /* LL_SBI_SOM_PREVIEW 0x1000 SOM preview mount option, obsolete */ #define LL_SBI_32BIT_API 0x2000 /* generate 32 bit inodes. */ #define LL_SBI_64BIT_HASH 0x4000 /* support 64-bits dir hash/offset */ #define LL_SBI_AGL_ENABLED 0x8000 /* enable agl */ #define LL_SBI_VERBOSE 0x10000 /* verbose mount/umount */ #define LL_SBI_LAYOUT_LOCK 0x20000 /* layout lock support */ #define LL_SBI_USER_FID2PATH 0x40000 /* allow fid2path by unprivileged users */ #define LL_SBI_XATTR_CACHE 0x80000 /* support for xattr cache */ #define LL_SBI_NOROOTSQUASH 0x100000 /* do not apply root squash */ #define LL_SBI_ALWAYS_PING 0x200000 /* always ping even if server * suppress_pings */ #define LL_SBI_FLAGS { \ "nolck", \ "checksum", \ "flock", \ "user_xattr", \ "acl", \ "???", \ "rmt_client", \ "mds_capa", \ "oss_capa", \ "flock", \ "lru_resize", \ "lazy_statfs", \ "som", \ "32bit_api", \ "64bit_hash", \ "agl", \ "verbose", \ "layout", \ "user_fid2path",\ "xattr_cache", \ "norootsquash", \ "always_ping", \ } #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]; }; #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]; }; /* This is embedded into llite super-blocks to keep track of connect * flags (capabilities) supported by all imports given mount is * connected to. */ struct lustre_client_ocd { /* This is conjunction of connect_flags across all imports * (LOVs) this mount is connected to. This field is updated by * cl_ocd_update() under ->lco_lock. */ __u64 lco_flags; struct mutex lco_lock; struct obd_export *lco_md_exp; struct obd_export *lco_dt_exp; }; struct ll_sb_info { /* 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; /* pp_extent entry*/ spinlock_t ll_process_lock; /* ll_rw_process_info */ struct obd_uuid ll_sb_uuid; struct obd_export *ll_md_exp; struct obd_export *ll_dt_exp; struct proc_dir_entry* ll_proc_root; struct lu_fid ll_root_fid; /* root object fid */ int ll_flags; unsigned int ll_umounting:1, ll_xattr_cache_enabled:1, ll_client_common_fill_super_succeeded:1; /* per-conn chain of SBs */ struct list_head ll_conn_chain; struct lustre_client_ocd ll_lco; /*please don't ask -p*/ struct list_head ll_orphan_dentry_list; struct lprocfs_stats *ll_stats; /* lprocfs stats counter */ /* Used to track "unstable" pages on a client, and maintain a * LRU list of clean pages. An "unstable" page is defined as * any page which is sent to a server as part of a bulk request, * but is uncommitted to stable storage. */ struct cl_client_cache *ll_cache; struct lprocfs_stats *ll_ra_stats; struct ll_ra_info ll_ra_info; unsigned int ll_namelen; struct file_operations *ll_fop; unsigned int ll_md_brw_pages; /* readdir pages per RPC */ 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; int ll_stats_track_id; enum stats_track_type ll_stats_track_type; int ll_rw_stats_on; /* metadata stat-ahead */ unsigned int ll_sa_max; /* max statahead RPCs */ atomic_t ll_sa_total; /* statahead thread started * count */ atomic_t ll_sa_wrong; /* statahead thread stopped for * low hit ratio */ atomic_t ll_sa_running; /* running statahead thread * count */ atomic_t ll_agl_total; /* AGL thread started 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; /* root squash */ struct root_squash_info ll_squash; }; /* * per file-descriptor read-ahead data. */ struct ll_readahead_state { spinlock_t ras_lock; /* * index of the last page that read(2) needed and that wasn't in the * cache. Used by ras_update() to detect seeks. * * XXX nikita: if access seeks into cached region, Lustre doesn't see * this. */ unsigned long ras_last_readpage; /* * number of pages read after last read-ahead window reset. As window * is reset on each seek, this is effectively a number of consecutive * accesses. Maybe ->ras_accessed_in_window is better name. * * XXX nikita: window is also reset (by ras_update()) when Lustre * believes that memory pressure evicts read-ahead pages. In that * case, it probably doesn't make sense to expand window to * PTLRPC_MAX_BRW_PAGES on the third access. */ 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, * window is reset to 0. After 3 consecutive accesses, window is * expanded to PTLRPC_MAX_BRW_PAGES. Afterwards, window is enlarged by * PTLRPC_MAX_BRW_PAGES chunks up to ->ra_max_pages. */ unsigned long ras_window_start, ras_window_len; /* * Where next read-ahead should start at. This lies within read-ahead * window. Read-ahead window is read in pieces rather than at once * because: 1. lustre limits total number of pages under read-ahead by * ->ra_max_pages (see ll_ra_count_get()), 2. client cannot read pages * 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; /* * 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; }; extern struct kmem_cache *ll_file_data_slab; struct lustre_handle; struct ll_file_data { struct ll_readahead_state fd_ras; struct ll_grouplock fd_grouplock; __u64 lfd_pos; __u32 fd_flags; fmode_t fd_omode; /* openhandle if lease exists for this file. * Borrow lli->lli_och_mutex to protect assignment */ struct obd_client_handle *fd_lease_och; struct obd_client_handle *fd_och; struct file *fd_file; /* Indicate whether need to report failure when close. * true: failure is known, not report again. * false: unknown failure, should report. */ bool fd_write_failed; rwlock_t fd_lock; /* protect lcc list */ struct list_head fd_lccs; /* list of ll_cl_context */ }; extern spinlock_t inode_lock; extern struct proc_dir_entry *proc_lustre_fs_root; static inline struct inode *ll_info2i(struct ll_inode_info *lli) { return &lli->lli_vfs_inode; } __u32 ll_i2suppgid(struct inode *i); void ll_i2gids(__u32 *suppgids, struct inode *i1,struct inode *i2); static inline int ll_need_32bit_api(struct ll_sb_info *sbi) { #if BITS_PER_LONG == 32 return 1; #elif defined(CONFIG_COMPAT) return unlikely(is_compat_task() || (sbi->ll_flags & LL_SBI_32BIT_API)); #else return unlikely(sbi->ll_flags & LL_SBI_32BIT_API); #endif } void ll_ras_enter(struct file *f); /* llite/lcommon_misc.c */ int cl_ocd_update(struct obd_device *host, struct obd_device *watched, enum obd_notify_event ev, void *owner, void *data); int cl_get_grouplock(struct cl_object *obj, unsigned long gid, int nonblock, struct ll_grouplock *lg); void cl_put_grouplock(struct ll_grouplock *lg); /* llite/lproc_llite.c */ #ifdef CONFIG_PROC_FS int lprocfs_register_mountpoint(struct proc_dir_entry *parent, 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); extern struct lprocfs_vars lprocfs_llite_obd_vars[]; #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) {} #endif enum { LPROC_LL_DIRTY_HITS, LPROC_LL_DIRTY_MISSES, LPROC_LL_READ_BYTES, LPROC_LL_WRITE_BYTES, LPROC_LL_BRW_READ, LPROC_LL_BRW_WRITE, LPROC_LL_IOCTL, LPROC_LL_OPEN, LPROC_LL_RELEASE, LPROC_LL_MAP, LPROC_LL_LLSEEK, LPROC_LL_FSYNC, LPROC_LL_READDIR, LPROC_LL_SETATTR, LPROC_LL_TRUNC, LPROC_LL_FLOCK, LPROC_LL_GETATTR, LPROC_LL_CREATE, LPROC_LL_LINK, LPROC_LL_UNLINK, LPROC_LL_SYMLINK, LPROC_LL_MKDIR, LPROC_LL_RMDIR, LPROC_LL_MKNOD, LPROC_LL_RENAME, LPROC_LL_STAFS, LPROC_LL_ALLOC_INODE, LPROC_LL_SETXATTR, LPROC_LL_GETXATTR, LPROC_LL_GETXATTR_HITS, LPROC_LL_LISTXATTR, LPROC_LL_REMOVEXATTR, LPROC_LL_INODE_PERM, LPROC_LL_FILE_OPCODES }; /* llite/dir.c */ struct ll_dir_chain { }; static inline void ll_dir_chain_init(struct ll_dir_chain *chain) { } static inline void ll_dir_chain_fini(struct ll_dir_chain *chain) { } extern const struct file_operations ll_dir_operations; extern const struct inode_operations ll_dir_inode_operations; #ifdef HAVE_DIR_CONTEXT int ll_dir_read(struct inode *inode, __u64 *pos, struct md_op_data *op_data, struct dir_context *ctx); #else int ll_dir_read(struct inode *inode, __u64 *pos, struct md_op_data *op_data, void *cookie, filldir_t filldir); #endif int ll_get_mdt_idx(struct inode *inode); int ll_get_mdt_idx_by_fid(struct ll_sb_info *sbi, const struct lu_fid *fid); struct page *ll_get_dir_page(struct inode *dir, struct md_op_data *op_data, __u64 offset, struct ll_dir_chain *chain); void ll_release_page(struct inode *inode, struct page *page, bool remove); /* llite/namei.c */ extern const struct inode_operations ll_special_inode_operations; struct inode *ll_iget(struct super_block *sb, ino_t hash, struct lustre_md *lic); int ll_test_inode_by_fid(struct inode *inode, void *opaque); int ll_md_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *, void *data, int flag); struct dentry *ll_splice_alias(struct inode *inode, struct dentry *de); int ll_rmdir_entry(struct inode *dir, char *name, int namelen); void ll_update_times(struct ptlrpc_request *request, struct inode *inode); /* llite/rw.c */ int ll_writepage(struct page *page, struct writeback_control *wbc); int ll_writepages(struct address_space *, struct writeback_control *wbc); int ll_readpage(struct file *file, struct page *page); void ll_readahead_init(struct inode *inode, struct ll_readahead_state *ras); int vvp_io_write_commit(const struct lu_env *env, struct cl_io *io); struct ll_cl_context *ll_cl_find(struct file *file); void ll_cl_add(struct file *file, const struct lu_env *env, struct cl_io *io); void ll_cl_remove(struct file *file, const struct lu_env *env); #ifndef MS_HAS_NEW_AOPS extern const struct address_space_operations ll_aops; #else extern const struct address_space_operations_ext ll_aops; #endif /* 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; extern int ll_have_md_lock(struct inode *inode, __u64 *bits, enum ldlm_mode l_req_mode); extern enum ldlm_mode ll_take_md_lock(struct inode *inode, __u64 bits, struct lustre_handle *lockh, __u64 flags, enum ldlm_mode mode); int ll_file_open(struct inode *inode, struct file *file); int ll_file_release(struct inode *inode, struct file *file); int ll_release_openhandle(struct dentry *, struct lookup_intent *); int ll_md_real_close(struct inode *inode, fmode_t fmode); 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(struct vfsmount *mnt, struct dentry *de, struct kstat *stat); struct posix_acl *ll_get_acl(struct inode *inode, int type); int ll_migrate(struct inode *parent, struct file *file, int mdtidx, const char *name, int namelen); int ll_get_fid_by_name(struct inode *parent, const char *name, int namelen, struct lu_fid *fid, struct inode **inode); #ifdef HAVE_GENERIC_PERMISSION_4ARGS int ll_inode_permission(struct inode *inode, int mask, unsigned int flags); #else # ifndef HAVE_INODE_PERMISION_2ARGS int ll_inode_permission(struct inode *inode, int mask, struct nameidata *nd); # else int ll_inode_permission(struct inode *inode, int mask); # endif #endif int ll_lov_setstripe_ea_info(struct inode *inode, struct file *file, __u64 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, void **lmmp, int *lmm_size, struct ptlrpc_request **request, u64 valid); #ifdef HAVE_FILE_FSYNC_4ARGS int ll_fsync(struct file *file, loff_t start, loff_t end, int data); #elif defined(HAVE_FILE_FSYNC_2ARGS) int ll_fsync(struct file *file, int data); #else int ll_fsync(struct file *file, struct dentry *dentry, int data); #endif int ll_merge_attr(const struct lu_env *env, struct inode *inode); int ll_fid2path(struct inode *inode, void __user *arg); int ll_data_version(struct inode *inode, __u64 *data_version, int flags); int ll_hsm_release(struct inode *inode); int ll_hsm_state_set(struct inode *inode, struct hsm_state_set *hss); /* llite/dcache.c */ int ll_d_init(struct dentry *de); extern const struct dentry_operations ll_d_ops; void ll_intent_drop_lock(struct lookup_intent *); void ll_intent_release(struct lookup_intent *); void ll_invalidate_aliases(struct inode *); void ll_lookup_finish_locks(struct lookup_intent *it, struct dentry *dentry); 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; void ll_lli_init(struct ll_inode_info *lli); int ll_fill_super(struct super_block *sb, struct vfsmount *mnt); void ll_put_super(struct super_block *sb); void ll_kill_super(struct super_block *sb); struct inode *ll_inode_from_resource_lock(struct ldlm_lock *lock); void ll_dir_clear_lsm_md(struct inode *inode); void ll_clear_inode(struct inode *inode); int ll_setattr_raw(struct dentry *dentry, struct iattr *attr, bool hsm_import); int ll_setattr(struct dentry *de, struct iattr *attr); int ll_statfs(struct dentry *de, struct kstatfs *sfs); int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs, __u64 max_age, __u32 flags); int ll_update_inode(struct inode *inode, struct lustre_md *md); int 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); void ll_umount_begin(struct super_block *sb); int ll_remount_fs(struct super_block *sb, int *flags, char *data); #ifdef HAVE_SUPEROPS_USE_DENTRY int ll_show_options(struct seq_file *seq, struct dentry *dentry); #else int ll_show_options(struct seq_file *seq, struct vfsmount *vfs); #endif void ll_dirty_page_discard_warn(struct page *page, int ioret); int ll_prep_inode(struct inode **inode, struct ptlrpc_request *req, struct super_block *, struct lookup_intent *); void lustre_dump_dentry(struct dentry *, int recur); int ll_obd_statfs(struct inode *inode, void __user *arg); int ll_get_max_mdsize(struct ll_sb_info *sbi, int *max_mdsize); int ll_get_default_mdsize(struct ll_sb_info *sbi, int *default_mdsize); int ll_set_default_mdsize(struct ll_sb_info *sbi, int default_mdsize); int ll_process_config(struct lustre_cfg *lcfg); enum { LUSTRE_OPC_MKDIR = 0, LUSTRE_OPC_SYMLINK = 1, LUSTRE_OPC_MKNOD = 2, LUSTRE_OPC_CREATE = 3, LUSTRE_OPC_ANY = 5, }; struct md_op_data *ll_prep_md_op_data(struct md_op_data *op_data, struct inode *i1, struct inode *i2, const char *name, size_t namelen, __u32 mode, __u32 opc, void *data); void ll_finish_md_op_data(struct md_op_data *op_data); int ll_get_obd_name(struct inode *inode, unsigned int cmd, unsigned long arg); char *ll_get_fsname(struct super_block *sb, char *buf, int buflen); void ll_compute_rootsquash_state(struct ll_sb_info *sbi); ssize_t ll_copy_user_md(const struct lov_user_md __user *md, struct lov_user_md **kbuf); void ll_open_cleanup(struct super_block *sb, struct ptlrpc_request *open_req); /* Compute expected user md size when passing in a md from user space */ static inline ssize_t ll_lov_user_md_size(const struct lov_user_md *lum) { switch (lum->lmm_magic) { case LOV_USER_MAGIC_V1: return sizeof(struct lov_user_md_v1); case LOV_USER_MAGIC_V3: return sizeof(struct lov_user_md_v3); case LOV_USER_MAGIC_SPECIFIC: if (lum->lmm_stripe_count > LOV_MAX_STRIPE_COUNT) return -EINVAL; return lov_user_md_size(lum->lmm_stripe_count, LOV_USER_MAGIC_SPECIFIC); } return -EINVAL; } /* llite/llite_nfs.c */ extern struct export_operations lustre_export_operations; __u32 get_uuid2int(const char *name, int len); struct inode *search_inode_for_lustre(struct super_block *sb, const struct lu_fid *fid); int ll_dir_get_parent_fid(struct inode *dir, struct lu_fid *parent_fid); /* llite/symlink.c */ extern struct inode_operations ll_fast_symlink_inode_operations; /** * IO arguments for various VFS I/O interfaces. */ struct vvp_io_args { /** normal/sendfile/splice */ enum vvp_io_subtype via_io_subtype; union { struct { struct kiocb *via_iocb; struct iov_iter *via_iter; } normal; struct { struct pipe_inode_info *via_pipe; unsigned int via_flags; } splice; } u; }; struct ll_cl_context { struct list_head lcc_list; void *lcc_cookie; const struct lu_env *lcc_env; struct cl_io *lcc_io; struct cl_page *lcc_page; }; struct ll_thread_info { struct iovec lti_local_iov; struct vvp_io_args lti_args; struct ra_io_arg lti_ria; struct kiocb lti_kiocb; struct ll_cl_context lti_io_ctx; }; extern struct lu_context_key ll_thread_key; static inline struct ll_thread_info *ll_env_info(const struct lu_env *env) { struct ll_thread_info *lti; lti = lu_context_key_get(&env->le_ctx, &ll_thread_key); LASSERT(lti != NULL); return lti; } static inline struct vvp_io_args *ll_env_args(const struct lu_env *env, enum vvp_io_subtype type) { struct vvp_io_args *via = &ll_env_info(env)->lti_args; via->via_io_subtype = type; return via; } /* llite/llite_mmap.c */ int ll_teardown_mmaps(struct address_space *mapping, __u64 first, __u64 last); int ll_file_mmap(struct file * file, struct vm_area_struct * vma); void policy_from_vma(union ldlm_policy_data *policy, struct vm_area_struct *vma, unsigned long addr, size_t count); struct vm_area_struct *our_vma(struct mm_struct *mm, unsigned long addr, size_t count); static inline void ll_invalidate_page(struct page *vmpage) { struct address_space *mapping = vmpage->mapping; loff_t offset = vmpage->index << PAGE_CACHE_SHIFT; LASSERT(PageLocked(vmpage)); if (mapping == NULL) return; /* * truncate_complete_page() calls * a_ops->invalidatepage()->cl_page_delete()->vvp_page_delete(). */ ll_teardown_mmaps(mapping, offset, offset + PAGE_CACHE_SIZE); truncate_complete_page(mapping, vmpage); } #define ll_s2sbi(sb) (s2lsi(sb)->lsi_llsbi) /* don't need an addref as the sb_info should be holding one */ static inline struct obd_export *ll_s2dtexp(struct super_block *sb) { return ll_s2sbi(sb)->ll_dt_exp; } /* don't need an addref as the sb_info should be holding one */ static inline struct obd_export *ll_s2mdexp(struct super_block *sb) { return ll_s2sbi(sb)->ll_md_exp; } static inline struct client_obd *sbi2mdc(struct ll_sb_info *sbi) { struct obd_device *obd = sbi->ll_md_exp->exp_obd; if (obd == NULL) LBUG(); return &obd->u.cli; } // FIXME: replace the name of this with LL_SB to conform to kernel stuff static inline struct ll_sb_info *ll_i2sbi(struct inode *inode) { return ll_s2sbi(inode->i_sb); } static inline struct obd_export *ll_i2dtexp(struct inode *inode) { return ll_s2dtexp(inode->i_sb); } 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; return fid; } static inline loff_t ll_file_maxbytes(struct inode *inode) { struct cl_object *obj = ll_i2info(inode)->lli_clob; if (obj == NULL) return MAX_LFS_FILESIZE; return min_t(loff_t, cl_object_maxbytes(obj), MAX_LFS_FILESIZE); } /* 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); /* llite/remote_perm.c */ extern struct kmem_cache *ll_remote_perm_cachep; extern struct kmem_cache *ll_rmtperm_hash_cachep; 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); /** * 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); enum ras_update_flags { LL_RAS_HIT = 0x1, LL_RAS_MMAP = 0x2 }; void ll_ra_count_put(struct ll_sb_info *sbi, unsigned long len); void ll_ra_stats_inc(struct inode *inode, enum ra_stat which); /* llite/llite_rmtacl.c */ #ifdef CONFIG_FS_POSIX_ACL u64 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 #define LL_SA_CACHE_BIT 5 #define LL_SA_CACHE_SIZE (1 << LL_SA_CACHE_BIT) #define LL_SA_CACHE_MASK (LL_SA_CACHE_SIZE - 1) /* per inode struct, for dir only */ struct ll_statahead_info { struct dentry *sai_dentry; atomic_t sai_refcount; /* when access this struct, hold * refcount */ unsigned int sai_max; /* max ahead of lookup */ __u64 sai_sent; /* stat requests sent count */ __u64 sai_replied; /* stat requests which received * reply */ __u64 sai_index; /* index of statahead entry */ __u64 sai_index_wait; /* index of entry which is the * caller is waiting for */ __u64 sai_hit; /* hit count */ __u64 sai_miss; /* miss count: * for "ls -al" case, 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 */ sai_agl_valid:1,/* AGL is valid for the dir */ sai_in_readpage:1;/* statahead is in readdir()*/ wait_queue_head_t sai_waitq; /* stat-ahead wait queue */ struct ptlrpc_thread sai_thread; /* stat-ahead thread */ struct ptlrpc_thread sai_agl_thread; /* AGL thread */ struct list_head sai_interim_entries; /* entries which got async * stat reply, but not * instantiated */ struct list_head sai_entries; /* completed entries */ struct list_head sai_agls; /* AGLs to be sent */ struct list_head sai_cache[LL_SA_CACHE_SIZE]; spinlock_t sai_cache_lock[LL_SA_CACHE_SIZE]; atomic_t sai_cache_count; /* entry count in cache */ }; int ll_statahead(struct inode *dir, struct dentry **dentry, bool unplug); void ll_authorize_statahead(struct inode *dir, void *key); void ll_deauthorize_statahead(struct inode *dir, void *key); /* glimpse.c */ blkcnt_t dirty_cnt(struct inode *inode); int cl_glimpse_size0(struct inode *inode, int agl); int cl_glimpse_lock(const struct lu_env *env, struct cl_io *io, struct inode *inode, struct cl_object *clob, int agl); static inline int cl_glimpse_size(struct inode *inode) { return cl_glimpse_size0(inode, 0); } static inline int cl_agl(struct inode *inode) { return cl_glimpse_size0(inode, 1); } static inline int ll_glimpse_size(struct inode *inode) { struct ll_inode_info *lli = ll_i2info(inode); int rc; down_read(&lli->lli_glimpse_sem); rc = cl_glimpse_size(inode); lli->lli_glimpse_time = cfs_time_current(); up_read(&lli->lli_glimpse_sem); return rc; } /* dentry may statahead when statahead is enabled and current process has opened * parent directory, and this dentry hasn't accessed statahead cache before */ static inline bool dentry_may_statahead(struct inode *dir, struct dentry *dentry) { struct ll_inode_info *lli; struct ll_dentry_data *ldd; if (ll_i2sbi(dir)->ll_sa_max == 0) return false; lli = ll_i2info(dir); /* statahead is not allowed for this dir, there may be three causes: * 1. dir is not opened. * 2. statahead hit ratio is too low. * 3. previous stat started statahead thread failed. */ if (!lli->lli_sa_enabled) return false; /* not the same process, don't statahead */ if (lli->lli_opendir_pid != current_pid()) return false; /* * When stating a dentry, kernel may trigger 'revalidate' or 'lookup' * multiple times, eg. for 'getattr', 'getxattr' and etc. * For patchless client, lookup intent is not accurate, which may * misguide statahead. For example: * The 'revalidate' call for 'getattr' and 'getxattr' of a dentry will * have the same intent -- IT_GETATTR, while one dentry should access * statahead cache once, otherwise statahead windows is messed up. * The solution is as following: * Assign 'lld_sa_generation' with 'lli_sa_generation' when a dentry * IT_GETATTR for the first time, and subsequent IT_GETATTR will * bypass interacting with statahead cache by checking * 'lld_sa_generation == lli->lli_sa_generation'. */ ldd = ll_d2d(dentry); if (ldd != NULL && ldd->lld_sa_generation == lli->lli_sa_generation) return false; return true; } /* llite ioctl register support rountine */ 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); /* 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); int cl_sync_file_range(struct inode *inode, loff_t start, loff_t end, enum cl_fsync_mode mode, int ignore_layout); /** 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); static inline int ll_file_nolock(const struct file *file) { struct ll_file_data *fd = LUSTRE_FPRIVATE(file); struct inode *inode = file->f_path.dentry->d_inode; LASSERT(fd != NULL); return ((fd->fd_flags & LL_FILE_IGNORE_LOCK) || (ll_i2sbi(inode)->ll_flags & LL_SBI_NOLCK)); } static inline void ll_set_lock_data(struct obd_export *exp, struct inode *inode, struct lookup_intent *it, __u64 *bits) { if (!it->d.lustre.it_lock_set) { struct lustre_handle handle; /* If this inode is a remote object, it will get two * separate locks in different namespaces, Master MDT, * where the name entry is, will grant LOOKUP lock, * remote MDT, where the object is, will grant * UPDATE|PERM lock. The inode will be attched to both * LOOKUP and PERM locks, so revoking either locks will * case the dcache being cleared */ if (it->d.lustre.it_remote_lock_mode) { handle.cookie = it->d.lustre.it_remote_lock_handle; CDEBUG(D_DLMTRACE, "setting l_data to inode "DFID "(%p) for remote lock "LPX64"\n", PFID(ll_inode2fid(inode)), inode, handle.cookie); md_set_lock_data(exp, &handle.cookie, inode, NULL); } handle.cookie = it->d.lustre.it_lock_handle; CDEBUG(D_DLMTRACE, "setting l_data to inode "DFID"(%p)" " for lock "LPX64"\n", PFID(ll_inode2fid(inode)), inode, handle.cookie); md_set_lock_data(exp, &handle.cookie, inode, &it->d.lustre.it_lock_bits); it->d.lustre.it_lock_set = 1; } if (bits != NULL) *bits = it->d.lustre.it_lock_bits; } static inline void ll_lock_dcache(struct inode *inode) { #ifdef HAVE_DCACHE_LOCK spin_lock(&dcache_lock); #else spin_lock(&inode->i_lock); #endif } static inline void ll_unlock_dcache(struct inode *inode) { #ifdef HAVE_DCACHE_LOCK spin_unlock(&dcache_lock); #else spin_unlock(&inode->i_lock); #endif } static inline int d_lustre_invalid(const struct dentry *dentry) { struct ll_dentry_data *lld = ll_d2d(dentry); return (lld == NULL) || lld->lld_invalid; } static inline void __d_lustre_invalidate(struct dentry *dentry) { struct ll_dentry_data *lld = ll_d2d(dentry); if (lld != NULL) lld->lld_invalid = 1; } /* * Mark dentry INVALID, if dentry refcount is zero (this is normally case for * ll_md_blocking_ast), unhash this dentry, and let dcache to reclaim it later; * else dput() of the last refcount will unhash this dentry and kill it. */ static inline void d_lustre_invalidate(struct dentry *dentry, int nested) { CDEBUG(D_DENTRY, "invalidate dentry %.*s (%p) parent %p inode %p " "refc %d\n", dentry->d_name.len, dentry->d_name.name, dentry, dentry->d_parent, dentry->d_inode, ll_d_count(dentry)); spin_lock_nested(&dentry->d_lock, nested ? DENTRY_D_LOCK_NESTED : DENTRY_D_LOCK_NORMAL); __d_lustre_invalidate(dentry); /* * We should be careful about dentries created by d_obtain_alias(). * These dentries are not put in the dentry tree, instead they are * linked to sb->s_anon through dentry->d_hash. * shrink_dcache_for_umount() shrinks the tree and sb->s_anon list. * If we unhashed such a dentry, unmount would not be able to find * it and busy inodes would be reported. */ if (ll_d_count(dentry) == 0 && !(dentry->d_flags & DCACHE_DISCONNECTED)) __d_drop(dentry); spin_unlock(&dentry->d_lock); } static inline void d_lustre_revalidate(struct dentry *dentry) { spin_lock(&dentry->d_lock); LASSERT(ll_d2d(dentry) != NULL); ll_d2d(dentry)->lld_invalid = 0; spin_unlock(&dentry->d_lock); } int ll_layout_conf(struct inode *inode, const struct cl_object_conf *conf); int ll_layout_refresh(struct inode *inode, __u32 *gen); int ll_layout_restore(struct inode *inode, loff_t start, __u64 length); int ll_xattr_init(void); void ll_xattr_fini(void); int ll_getxattr_common(struct inode *inode, const char *name, void *buffer, size_t size, __u64 valid); int ll_page_sync_io(const struct lu_env *env, struct cl_io *io, struct cl_page *page, enum cl_req_type crt); int ll_getparent(struct file *file, struct getparent __user *arg); /* lcommon_cl.c */ int cl_setattr_ost(struct cl_object *obj, const struct iattr *attr, unsigned int attr_flags); extern struct lu_env *cl_inode_fini_env; extern __u16 cl_inode_fini_refcheck; int cl_file_inode_init(struct inode *inode, struct lustre_md *md); void cl_inode_fini(struct inode *inode); u64 cl_fid_build_ino(const struct lu_fid *fid, int api32); u32 cl_fid_build_gen(const struct lu_fid *fid); #endif /* LLITE_INTERNAL_H */