X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Fllite%2Fllite_internal.h;h=da60dd318a7880bf53a8297da203185b260e6a00;hb=2b23ad0d183141dc25377f2d37de6e6e36ba1169;hp=a4247668ec524f7b7aa8e2ebcd517734dd651dce;hpb=8fe3dba83f51aaa7ef76f117915d40811bfb4300;p=fs%2Flustre-release.git diff --git a/lustre/llite/llite_internal.h b/lustre/llite/llite_internal.h index a424766..da60dd3 100644 --- a/lustre/llite/llite_internal.h +++ b/lustre/llite/llite_internal.h @@ -27,7 +27,7 @@ * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. * Use is subject to license terms. * - * Copyright (c) 2011, 2012, Whamcloud, Inc. + * Copyright (c) 2011, 2013, Intel Corporation. */ /* * This file is part of Lustre, http://www.lustre.org/ @@ -36,9 +36,6 @@ #ifndef LLITE_INTERNAL_H #define LLITE_INTERNAL_H - -#include - #include #include #include /* for s2sbi */ @@ -49,6 +46,7 @@ #include #include #include +#include #ifndef FMODE_EXEC #define FMODE_EXEC 0 @@ -124,7 +122,12 @@ enum lli_flags { LLIF_CONTENDED = (1 << 4), /* Truncate uses server lock for this file */ LLIF_SRVLOCK = (1 << 5), - + /* File data is modified. */ + LLIF_DATA_MODIFIED = (1 << 6), + /* File is being restored */ + LLIF_FILE_RESTORING = (1 << 7), + /* Xattr cache is attached to the file */ + LLIF_XATTR_CACHE = (1 << 8), }; struct ll_inode_info { @@ -195,6 +198,8 @@ struct ll_inode_info { /* "opendir_pid" is the token when lookup/revalid * -- I am the owner of dir statahead. */ pid_t d_opendir_pid; + /* directory stripe information */ + struct lmv_stripe_md *d_lmv_md; } d; #define lli_readdir_mutex u.d.d_readdir_mutex @@ -203,6 +208,7 @@ struct ll_inode_info { #define lli_def_acl u.d.d_def_acl #define lli_sa_lock u.d.d_sa_lock #define lli_opendir_pid u.d.d_opendir_pid +#define lli_lmv_md u.d.d_lmv_md /* for non-directory */ struct { @@ -228,6 +234,11 @@ struct ll_inode_info { /* for writepage() only to communicate to fsync */ int f_async_rc; + /* volatile file criteria is based on file name, this + * flag is used to keep the test result, so the strcmp + * is done only once + */ + bool f_volatile; /* * whenever a process try to read/write the file, the * jobid of the process will be saved here, and it'll @@ -251,6 +262,7 @@ struct ll_inode_info { #define lli_agl_index u.f.f_agl_index #define lli_async_rc u.f.f_async_rc #define lli_jobid u.f.f_jobid +#define lli_volatile u.f.f_volatile } u; @@ -271,8 +283,20 @@ struct ll_inode_info { struct mutex lli_layout_mutex; /* valid only inside LAYOUT ibits lock, protected by lli_layout_mutex */ __u32 lli_layout_gen; + + struct rw_semaphore lli_xattrs_list_rwsem; + struct mutex lli_xattrs_enq_lock; + struct list_head lli_xattrs; /* ll_xattr_entry->xe_list */ }; +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); + /* * Locking to guarantee consistency of non-atomic updates to long long i_size, * consistency between file size and KMS. @@ -292,10 +316,10 @@ static inline struct ll_inode_info *ll_i2info(struct inode *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 - CFS_PAGE_SHIFT)) +#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 - CFS_PAGE_SHIFT)) +#define SBI_DEFAULT_READAHEAD_WHOLE_MAX (2UL << (20 - PAGE_CACHE_SHIFT)) enum ra_stat { RA_STAT_HIT = 0, @@ -394,6 +418,30 @@ enum stats_track_type { #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_FLAGS { \ + "nolck", \ + "checksum", \ + "flock", \ + "xattr", \ + "acl", \ + "???", \ + "rmt_client", \ + "mds_capa", \ + "oss_capa", \ + "flock", \ + "lru_resize", \ + "lazy_statfs", \ + "som", \ + "32bit_api", \ + "64bit_hash", \ + "agl", \ + "verbose", \ + "layout", \ + "user_fid2path",\ + "xattr", \ +} /* default value for ll_sb_info->contention_time */ #define SBI_DEFAULT_CONTENTION_SECONDS 60 @@ -441,6 +489,8 @@ struct ll_sb_info { struct lu_fid ll_root_fid; /* root object fid */ int ll_flags; + unsigned int ll_umounting:1, + ll_xattr_cache_enabled:1; cfs_list_t ll_conn_chain; /* per-conn chain of SBs */ struct lustre_client_ocd ll_lco; @@ -449,6 +499,10 @@ struct ll_sb_info { 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; @@ -584,15 +638,19 @@ struct ll_readahead_state { unsigned long ras_consecutive_stride_requests; }; -extern cfs_mem_cache_t *ll_file_data_slab; +extern struct kmem_cache *ll_file_data_slab; struct lustre_handle; struct ll_file_data { - struct ll_readahead_state fd_ras; - int fd_omode; - struct ccc_grouplock fd_grouplock; + struct ll_readahead_state fd_ras; + struct ccc_grouplock fd_grouplock; __u64 lfd_pos; - __u32 fd_flags; - struct file *fd_file; + __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. */ @@ -624,13 +682,18 @@ static inline int ll_need_32bit_api(struct ll_sb_info *sbi) #if BITS_PER_LONG == 32 return 1; #else - return unlikely(cfs_curproc_is_32bit() || (sbi->ll_flags & LL_SBI_32BIT_API)); + return unlikely( +#ifdef CONFIG_COMPAT + is_compat_task() || +#endif + (sbi->ll_flags & LL_SBI_32BIT_API) + ); #endif } #define LLAP_MAGIC 98764321 -extern cfs_mem_cache_t *ll_async_page_slab; +extern struct kmem_cache *ll_async_page_slab; extern size_t ll_async_page_slab_size; void ll_ra_read_in(struct file *f, struct ll_ra_read *rar); @@ -657,15 +720,20 @@ static void lprocfs_llite_init_vars(struct lprocfs_static_vars *lvars) /* llite/dir.c */ -void ll_release_page(struct page *page, int remove); 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, - struct ll_dir_chain *chain); -int ll_dir_read(struct inode *inode, __u64 *_pos, void *cookie, - filldir_t filldir); - +int ll_dir_read(struct inode *inode, struct md_op_data *op_data, + void *cookie, filldir_t filldir); int ll_get_mdt_idx(struct inode *inode); + +struct lu_dirent *ll_dir_entry_start(struct inode *dir, + struct md_op_data *op_data); + +struct lu_dirent *ll_dir_entry_next(struct inode *dir, + struct md_op_data *op_data, + struct lu_dirent *ent); +void ll_dir_entry_end(struct inode *dir, struct md_op_data *op_data, + struct lu_dirent *ent); /* llite/namei.c */ int ll_objects_destroy(struct ptlrpc_request *request, struct inode *dir); @@ -673,15 +741,14 @@ struct inode *ll_iget(struct super_block *sb, ino_t hash, struct lustre_md *lic); int ll_md_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *, void *data, int flag); +#ifndef HAVE_IOP_ATOMIC_OPEN struct lookup_intent *ll_convert_intent(struct open_intent *oit, int lookup_flags); -int ll_lookup_it_finish(struct ptlrpc_request *request, - struct lookup_intent *it, void *data); +#endif struct dentry *ll_splice_alias(struct inode *inode, struct dentry *de); +int ll_rmdir_entry(struct inode *dir, char *name, int namelen); /* 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, struct writeback_control *wbc); int ll_writepages(struct address_space *, struct writeback_control *wbc); void ll_removepage(struct page *page); @@ -694,6 +761,9 @@ 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); +int vvp_io_write_commit(const struct lu_env *env, struct cl_io *io); +struct ll_cl_context *ll_cl_init(struct file *file, struct page *vmpage); +void ll_cl_fini(struct ll_cl_context *lcc); /* llite/file.c */ extern struct file_operations ll_file_operations; @@ -705,10 +775,15 @@ extern int ll_inode_revalidate_it(struct dentry *, struct lookup_intent *, extern int ll_have_md_lock(struct inode *inode, __u64 *bits, ldlm_mode_t l_req_mode); extern ldlm_mode_t ll_take_md_lock(struct inode *inode, __u64 bits, - struct lustre_handle *lockh, __u64 flags); + struct lustre_handle *lockh, __u64 flags, + ldlm_mode_t mode); int __ll_inode_revalidate_it(struct dentry *, struct lookup_intent *, __u64 bits); +#ifdef HAVE_IOP_ATOMIC_OPEN +int ll_revalidate_nd(struct dentry *dentry, unsigned int flags); +#else int ll_revalidate_nd(struct dentry *dentry, struct nameidata *nd); +#endif int ll_file_open(struct inode *inode, struct file *file); int ll_file_release(struct inode *inode, struct file *file); int ll_glimpse_ioctl(struct ll_sb_info *sbi, @@ -720,7 +795,7 @@ int ll_local_open(struct file *file, 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_real_close(struct inode *inode, int flags); +int ll_md_real_close(struct inode *inode, fmode_t fmode); void ll_ioepoch_close(struct inode *inode, struct md_op_data *op_data, struct obd_client_handle **och, unsigned long flags); void ll_done_writing_attr(struct inode *inode, struct md_op_data *op_data); @@ -751,14 +826,14 @@ int ll_inode_permission(struct inode *inode, int mask); #endif int ll_lov_setstripe_ea_info(struct inode *inode, struct file *file, - int flags, struct lov_user_md *lum, - int lum_size); + __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, struct lov_mds_md **lmm, +int ll_dir_getstripe(struct inode *inode, struct lov_mds_md **lmmp, int *lmm_size, struct ptlrpc_request **request); #ifdef HAVE_FILE_FSYNC_4ARGS int ll_fsync(struct file *file, loff_t start, loff_t end, int data); @@ -769,27 +844,27 @@ int ll_fsync(struct file *file, struct dentry *dentry, int data); #endif int ll_do_fiemap(struct inode *inode, struct ll_user_fiemap *fiemap, int num_bytes); -int ll_merge_lvb(struct inode *inode); +int ll_merge_lvb(const struct lu_env *env, 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 inode *inode, void *arg); +int ll_data_version(struct inode *inode, __u64 *data_version, int flags); +int ll_hsm_release(struct inode *inode); + +struct obd_client_handle *ll_lease_open(struct inode *inode, struct file *file, + fmode_t mode, __u64 flags); +int ll_lease_close(struct obd_client_handle *och, struct inode *inode, + bool *lease_broken); /* llite/dcache.c */ -int ll_dops_init(struct dentry *de, int block, int init_sa); +int ll_d_init(struct dentry *de); extern 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_frob_intent(struct lookup_intent **itp, struct lookup_intent *deft); void ll_lookup_finish_locks(struct lookup_intent *it, struct dentry *dentry); -#ifdef HAVE_D_COMPARE_7ARGS -int ll_dcompare(const struct dentry *parent, const struct inode *pinode, - const struct dentry *dentry, const struct inode *inode, - unsigned int len, const char *str, const struct qstr *d_name); -#else -int ll_dcompare(struct dentry *parent, struct qstr *d_name, struct qstr *name); -#endif int ll_revalidate_it_finish(struct ptlrpc_request *request, struct lookup_intent *it, struct dentry *de); @@ -801,9 +876,10 @@ 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); struct inode *ll_inode_from_lock(struct ldlm_lock *lock); void ll_clear_inode(struct inode *inode); -int ll_setattr_raw(struct dentry *dentry, struct iattr *attr); +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, @@ -814,20 +890,16 @@ 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); -#endif 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(cfs_page_t *page, int ioret); +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 super_block *, struct lookup_intent *); void lustre_dump_dentry(struct dentry *, int recur); void lustre_dump_inode(struct inode *); int ll_obd_statfs(struct inode *inode, void *arg); @@ -844,6 +916,8 @@ char *ll_get_fsname(struct super_block *sb, char *buf, int buflen); /* 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); /* llite/special.c */ extern struct inode_operations ll_special_inode_operations; @@ -861,7 +935,7 @@ extern struct inode_operations ll_fast_symlink_inode_operations; struct ll_close_queue { spinlock_t lcq_lock; cfs_list_t lcq_head; - cfs_waitq_t lcq_waitq; + wait_queue_head_t lcq_waitq; struct completion lcq_comp; cfs_atomic_t lcq_stop; }; @@ -906,20 +980,7 @@ struct vvp_io { /** * locked page returned from vvp_io */ - cfs_page_t *ft_vmpage; -#ifndef HAVE_VM_OP_FAULT - struct vm_nopage_api { - /** - * Virtual address at which fault occurred. - */ - unsigned long ft_address; - /** - * Fault type, as to be supplied to - * filemap_nopage(). - */ - int *ft_type; - } nopage; -#else + struct page *ft_vmpage; struct vm_fault_api { /** * kernel fault info @@ -930,7 +991,6 @@ struct vvp_io { */ unsigned int ft_flags; } fault; -#endif } fault; } u; /** @@ -957,9 +1017,7 @@ struct vvp_io_args { union { struct { -#ifndef HAVE_FILE_WRITEV struct kiocb *via_iocb; -#endif struct iovec *via_iov; unsigned long via_nrsegs; } normal; @@ -1058,15 +1116,19 @@ struct vm_area_struct *our_vma(struct mm_struct *mm, unsigned long addr, 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; - - ll_teardown_mmaps(mapping, offset, offset + CFS_PAGE_SIZE); - truncate_complete_page(mapping, 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) @@ -1110,9 +1172,10 @@ static inline struct obd_export *ll_i2mdexp(struct inode *inode) 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; } @@ -1135,8 +1198,8 @@ 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 cfs_mem_cache_t *ll_remote_perm_cachep; -extern cfs_mem_cache_t *ll_rmtperm_hash_cachep; +extern struct kmem_cache *ll_remote_perm_cachep; +extern struct kmem_cache *ll_rmtperm_hash_cachep; cfs_hlist_head_t *alloc_rmtperm_hash(void); void free_rmtperm_hash(cfs_hlist_head_t *hash); @@ -1144,7 +1207,7 @@ int ll_update_remote_perm(struct inode *inode, struct mdt_remote_perm *perm); int lustre_check_remote_perm(struct inode *inode, int mask); /* llite/llite_capa.c */ -extern cfs_timer_t ll_capa_timer; +extern struct timer_list ll_capa_timer; int ll_capa_thread_start(void); void ll_capa_thread_stop(void); @@ -1236,14 +1299,14 @@ struct ll_statahead_info { 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_in_readpage:1,/* statahead is in readdir()*/ - sai_agl_valid:1;/* AGL is valid for the dir */ - cfs_waitq_t sai_waitq; /* stat-ahead wait queue */ - struct ptlrpc_thread sai_thread; /* stat-ahead thread */ - struct ptlrpc_thread sai_agl_thread; /* AGL thread */ - cfs_list_t sai_entries_sent; /* entries sent out */ + unsigned int sai_ls_all:1, /* "ls -al", do stat-ahead for + * hidden entries */ + sai_in_readpage:1,/* statahead is in readdir()*/ + sai_agl_valid:1;/* AGL is valid for the dir */ + 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 */ + cfs_list_t sai_entries; /* entry list */ cfs_list_t sai_entries_received; /* entries returned */ cfs_list_t sai_entries_stated; /* entries stated */ cfs_list_t sai_entries_agl; /* AGL entries to be sent */ @@ -1271,53 +1334,70 @@ static inline int ll_glimpse_size(struct inode *inode) static inline void ll_statahead_mark(struct inode *dir, struct dentry *dentry) { - struct ll_inode_info *lli = ll_i2info(dir); - struct ll_statahead_info *sai = lli->lli_sai; - struct ll_dentry_data *ldd = ll_d2d(dentry); + struct ll_inode_info *lli = ll_i2info(dir); + struct ll_statahead_info *sai = lli->lli_sai; + struct ll_dentry_data *ldd = ll_d2d(dentry); - /* not the same process, don't mark */ - if (lli->lli_opendir_pid != cfs_curproc_pid()) - return; + /* not the same process, don't mark */ + if (lli->lli_opendir_pid != current_pid()) + return; - if (sai != NULL && ldd != NULL) - ldd->lld_sa_generation = sai->sai_generation; + LASSERT(ldd != NULL); + if (sai != NULL) + ldd->lld_sa_generation = sai->sai_generation; } static inline int -ll_statahead_enter(struct inode *dir, struct dentry **dentryp, int only_unplug) +d_need_statahead(struct inode *dir, struct dentry *dentryp) { - struct ll_inode_info *lli; - struct ll_dentry_data *ldd; - - if (ll_i2sbi(dir)->ll_sa_max == 0) - return -EAGAIN; + struct ll_inode_info *lli; + struct ll_dentry_data *ldd; + + if (ll_i2sbi(dir)->ll_sa_max == 0) + return -EAGAIN; + + lli = ll_i2info(dir); + /* not the same process, don't statahead */ + if (lli->lli_opendir_pid != current_pid()) + return -EAGAIN; + + /* statahead has been stopped */ + if (lli->lli_opendir_key == NULL) + return -EAGAIN; + + ldd = ll_d2d(dentryp); + /* + * When stats 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, + * which 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 1; +} - lli = ll_i2info(dir); - /* not the same process, don't statahead */ - if (lli->lli_opendir_pid != cfs_curproc_pid()) - return -EAGAIN; +static inline int +ll_statahead_enter(struct inode *dir, struct dentry **dentryp, int only_unplug) +{ + int ret; - ldd = ll_d2d(*dentryp); - /* - * When stats 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, - * which 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; + ret = d_need_statahead(dir, *dentryp); + if (ret <= 0) + return ret; - return do_statahead_enter(dir, dentryp, only_unplug); + return do_statahead_enter(dir, dentryp, only_unplug); } /* llite ioctl register support rountine */ @@ -1392,8 +1472,8 @@ static inline void cl_isize_unlock(struct inode *inode) static inline void cl_isize_write_nolock(struct inode *inode, loff_t kms) { - LASSERT_SEM_LOCKED(&ll_i2info(inode)->lli_size_sem); - i_size_write(inode, kms); + LASSERT(down_trylock(&ll_i2info(inode)->lli_size_sem) != 0); + i_size_write(inode, kms); } static inline void cl_isize_write(struct inode *inode, loff_t kms) @@ -1405,9 +1485,9 @@ static inline void cl_isize_write(struct inode *inode, loff_t kms) #define cl_isize_read(inode) i_size_read(inode) -static inline int cl_merge_lvb(struct inode *inode) +static inline int cl_merge_lvb(const struct lu_env *env, struct inode *inode) { - return ll_merge_lvb(inode); + return ll_merge_lvb(env, inode); } #define cl_inode_atime(inode) LTIME_S((inode)->i_atime) @@ -1417,7 +1497,7 @@ static inline int cl_merge_lvb(struct inode *inode) struct obd_capa *cl_capa_lookup(struct inode *inode, enum cl_req_type crt); int cl_sync_file_range(struct inode *inode, loff_t start, loff_t end, - enum cl_fsync_mode mode); + enum cl_fsync_mode mode, int ignore_layout); /** direct write pages */ struct ll_dio_pages { @@ -1462,16 +1542,38 @@ static inline int ll_file_nolock(const struct file *file) 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) { - CDEBUG(D_DLMTRACE, "setting l_data to inode %p (%lu/%u)\n", - inode, inode->i_ino, inode->i_generation); - md_set_lock_data(exp, &it->d.lustre.it_lock_handle, - inode, &it->d.lustre.it_lock_bits); - it->d.lustre.it_lock_set = 1; - } - - if (bits != NULL) - *bits = it->d.lustre.it_lock_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) @@ -1512,15 +1614,16 @@ static inline void __d_lustre_invalidate(struct dentry *dentry) * 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) +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, d_refcount(dentry)); + dentry->d_parent, dentry->d_inode, d_count(dentry)); - spin_lock(&dentry->d_lock); + spin_lock_nested(&dentry->d_lock, + nested ? DENTRY_D_LOCK_NESTED : DENTRY_D_LOCK_NORMAL); __d_lustre_invalidate(dentry); - if (d_refcount(dentry) == 0) + if (d_count(dentry) == 0) __d_drop(dentry); spin_unlock(&dentry->d_lock); } @@ -1551,7 +1654,19 @@ struct if_quotactl_18 { #warning "remove old LL_IOC_QUOTACTL_18 compatibility code" #endif /* LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 7, 50, 0) */ +enum { + LL_LAYOUT_GEN_NONE = ((__u32)-2), /* layout lock was cancelled */ + LL_LAYOUT_GEN_EMPTY = ((__u32)-1) /* for empty layout */ +}; + 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_page_sync_io(const struct lu_env *env, struct cl_io *io, + struct cl_page *page, enum cl_req_type crt); #endif /* LLITE_INTERNAL_H */