X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Fllite%2Fllite_internal.h;h=6967afb0ebc87b5a624f9072fd9ccb0bc11ab8eb;hp=6273f68a41cab52eaaabc0576e084fd61c26a55a;hb=1cbf25caab01ac561bb35053ca34fb6eb7336b3d;hpb=f2b264f2049554d69c1cc6f0c0ebc5d3e196a068 diff --git a/lustre/llite/llite_internal.h b/lustre/llite/llite_internal.h index 6273f68..6967afb 100644 --- a/lustre/llite/llite_internal.h +++ b/lustre/llite/llite_internal.h @@ -1,30 +1,61 @@ /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- * vim:expandtab:shiftwidth=8:tabstop=8: + * + * GPL HEADER START + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 only, + * as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License version 2 for more details (a copy is included + * in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU General Public License + * version 2 along with this program; If not, see + * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf + * + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + * GPL HEADER END + */ +/* + * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. + * Use is subject to license terms. + */ +/* + * This file is part of Lustre, http://www.lustre.org/ + * Lustre is a trademark of Sun Microsystems, Inc. */ #ifndef LLITE_INTERNAL_H #define LLITE_INTERNAL_H -# include - -#ifdef CONFIG_FS_POSIX_ACL -# include -#ifdef HAVE_XATTR_ACL -# include -#endif -#ifdef HAVE_LINUX_POSIX_ACL_XATTR_H -# include -#endif -#endif +#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 +#ifndef DCACHE_LUSTRE_INVALID +#define DCACHE_LUSTRE_INVALID 0x4000 +#endif + #define LL_IT2STR(it) ((it) ? ldlm_it2str((it)->it_op) : "0") #define LUSTRE_FPRIVATE(file) ((file)->private_data) @@ -41,11 +72,12 @@ struct ll_dentry_data { struct obd_client_handle lld_cwd_och; struct obd_client_handle lld_mnt_och; #ifndef HAVE_VFS_INTENT_PATCHES - struct lookup_intent *lld_it; + struct lookup_intent *lld_it; #endif + unsigned int lld_sa_generation; }; -#define ll_d2d(de) ((struct ll_dentry_data*) de->d_fsdata) +#define ll_d2d(de) ((struct ll_dentry_data*)((de)->d_fsdata)) extern struct file_operations ll_pgcache_seq_fops; @@ -57,7 +89,7 @@ extern struct file_operations ll_pgcache_seq_fops; /* llite setxid/access permission for user on remote client */ struct ll_remote_perm { - struct hlist_node lrp_list; + cfs_hlist_node_t lrp_list; uid_t lrp_uid; gid_t lrp_gid; uid_t lrp_fsuid; @@ -77,42 +109,50 @@ enum lli_flags { /* 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 */ + cfs_semaphore_t lli_size_sem; /* protect open and change size */ void *lli_size_sem_owner; - struct semaphore lli_write_sem; + cfs_semaphore_t lli_write_sem; + cfs_rw_semaphore_t lli_trunc_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_pending_write_llaps; - struct list_head lli_close_list; + cfs_spinlock_t lli_lock; + cfs_list_t lli_close_list; /* handle is to be sent to MDS later on done_writing and setattr. * Open handle data are needed for the recovery to reconstruct * the inode state on the MDS. XXX: recovery is not ready yet. */ struct obd_client_handle *lli_pending_och; - atomic_t lli_mmap_cnt; /* for writepage() only to communicate to fsync */ int lli_async_rc; + int lli_write_rc; struct posix_acl *lli_posix_acl; /* remote permission hash */ - struct hlist_head *lli_remote_perms; + cfs_hlist_head_t *lli_remote_perms; unsigned long lli_rmtperm_utime; - struct semaphore lli_rmtperm_sem; + cfs_semaphore_t lli_rmtperm_sem; - struct list_head lli_dead_list; + cfs_list_t lli_dead_list; - struct semaphore lli_och_sem; /* Protects access to och pointers - and their usage counters */ + cfs_semaphore_t lli_och_sem; /* Protects access to och pointers + and their usage counters, also + atomicity of check-update of + lli_smd */ /* We need all three because every inode may be opened in different modes */ struct obd_client_handle *lli_mds_read_och; @@ -131,9 +171,33 @@ struct ll_inode_info { /* fid capability */ /* open count currently used by capability only, indicate whether * capability needs renewal */ - atomic_t lli_open_count; + cfs_atomic_t lli_open_count; struct obd_capa *lli_mds_capa; - struct list_head lli_oss_capas; + cfs_list_t lli_oss_capas; + + /* metadata statahead */ + /* protect statahead stuff: lli_opendir_pid, lli_opendir_key, lli_sai, + * and so on. */ + cfs_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; + /* + * 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; + __u64 lli_sa_pos; + struct cl_object *lli_clob; + /* the most recent timestamps obtained from mds */ + struct ost_lvb lli_lvb; + /** + * serialize normal readdir and statahead-readdir + */ + cfs_semaphore_t lli_readdir_sem; }; /* @@ -178,10 +242,29 @@ enum ra_stat { }; struct ll_ra_info { - unsigned long ra_cur_pages; + cfs_atomic_t ra_cur_pages; unsigned long ra_max_pages; + unsigned long ra_max_pages_per_file; unsigned long ra_max_read_ahead_whole_pages; - unsigned long ra_stats[_NR_RA_STAT]; +}; + +/* ra_io_arg will be filled in the beginning of ll_readahead with + * ras_lock, then the following ll_read_ahead_pages will read RA + * pages according to this arg, all the items in this structure are + * counted by page index. + */ +struct ra_io_arg { + unsigned long ria_start; /* start offset of read-ahead*/ + unsigned long ria_end; /* end offset of read-ahead*/ + /* If stride read pattern is detected, ria_stoff means where + * stride read is started. Note: for normal read-ahead, the + * value here is meaningless, and also it will not be accessed*/ + pgoff_t ria_stoff; + /* ria_length and ria_pages are the length and pages length in the + * stride I/O mode. And they will also be used to check whether + * it is stride I/O read-ahead in the read-ahead pages*/ + unsigned long ria_length; + unsigned long ria_pages; }; /* LL_HIST_MAX=32 causes an overflow */ @@ -209,7 +292,7 @@ struct ll_rw_process_info { loff_t rw_offset; size_t rw_smallest_extent; size_t rw_largest_extent; - struct file *rw_last_file; + struct ll_file_data *rw_last_file; }; enum stats_track_type { @@ -226,20 +309,54 @@ enum stats_track_type { #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 */ +#define LL_SBI_SOM_PREVIEW 0x1000 /* SOM preview mount option */ +#define LL_SBI_32BIT_API 0x2000 /* generate 32 bit inodes. */ + +/* 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 { + cfs_list_t rce_list; + pid_t rce_key; /* hash key */ + int rce_ops; /* acl operation type */ +}; + +struct rmtacl_ctl_table { + cfs_spinlock_t rct_lock; + cfs_list_t rct_entries[RCE_HASHES]; +}; + +#define EE_HASHES 32 + +struct eacl_entry { + cfs_list_t 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 { + cfs_spinlock_t et_lock; + cfs_list_t et_entries[EE_HASHES]; +}; struct ll_sb_info { - struct list_head ll_list; + cfs_list_t 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 */ + cfs_spinlock_t ll_lock; + cfs_spinlock_t ll_pp_extent_lock; /* Lock for pp_extent entries */ + cfs_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; @@ -247,31 +364,29 @@ struct ll_sb_info { struct lu_fid ll_root_fid; /* root object fid */ int ll_flags; - struct list_head ll_conn_chain; /* per-conn chain of SBs */ + cfs_list_t ll_conn_chain; /* per-conn chain of SBs */ struct lustre_client_ocd ll_lco; - struct list_head ll_orphan_dentry_list; /*please don't ask -p*/ + cfs_list_t ll_orphan_dentry_list; /*please don't ask -p*/ struct ll_close_queue *ll_lcq; struct lprocfs_stats *ll_stats; /* lprocfs stats counter */ unsigned long ll_async_page_max; unsigned long ll_async_page_count; - unsigned long ll_pglist_gen; - struct list_head ll_pglist; /* all pages (llap_pglist_item) */ + + struct lprocfs_stats *ll_ra_stats; struct ll_ra_info ll_ra_info; unsigned int ll_namelen; struct file_operations *ll_fop; -#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; @@ -283,24 +398,33 @@ struct ll_sb_info { int ll_stats_track_id; 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 */ + dev_t ll_sdev_orig; /* save s_dev before assign for * clustred nfs */ + struct rmtacl_ctl_table ll_rct; + struct eacl_table ll_et; }; -#define LL_DEFAULT_MAX_RW_CHUNK (32 * 1024 * 1024) +#define LL_DEFAULT_MAX_RW_CHUNK (32 * 1024 * 1024) struct ll_ra_read { pgoff_t lrr_start; pgoff_t lrr_count; struct task_struct *lrr_reader; - struct list_head lrr_linkage; + cfs_list_t lrr_linkage; }; /* * per file-descriptor read-ahead data. */ struct ll_readahead_state { - spinlock_t ras_lock; + cfs_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. @@ -358,10 +482,33 @@ struct ll_readahead_state { * progress against this file descriptor. Used by read-ahead code, * protected by ->ras_lock. */ - struct list_head ras_read_beads; + cfs_list_t 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 { + __u64 lfd_pos; + __u64 lfd_next; }; extern cfs_mem_cache_t *ll_file_data_slab; @@ -369,15 +516,15 @@ struct lustre_handle; struct ll_file_data { struct ll_readahead_state fd_ras; int fd_omode; - struct lustre_handle fd_cwlockh; - unsigned long fd_gid; + struct ccc_grouplock fd_grouplock; struct ll_file_dir fd_dir; __u32 fd_flags; + struct file *fd_file; }; struct lov_stripe_md; -extern spinlock_t inode_lock; +extern cfs_spinlock_t inode_lock; extern struct proc_dir_entry *proc_lustre_fs_root; @@ -387,55 +534,27 @@ static inline struct inode *ll_info2i(struct ll_inode_info *lli) } struct it_cb_data { - struct inode *icbd_parent; + struct inode *icbd_parent; struct dentry **icbd_childp; - obd_id hash; + obd_id hash; }; +__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; +#else + return unlikely(cfs_curproc_is_32bit() || (sbi->ll_flags & LL_SBI_32BIT_API)); +#endif +} + #define LLAP_MAGIC 98764321 extern cfs_mem_cache_t *ll_async_page_slab; extern size_t ll_async_page_slab_size; -struct ll_async_page { - int llap_magic; - /* only trust these if the page lock is providing exclusion */ - unsigned int llap_write_queued:1, - llap_defer_uptodate:1, - llap_origin:3, - llap_ra_used:1, - llap_ignore_quota:1; - void *llap_cookie; - struct page *llap_page; - struct list_head llap_pending_write; - struct list_head llap_pglist_item; - /* checksum for paranoid I/O debugging */ - __u32 llap_checksum; -}; - -/* - * enumeration of llap_from_page() call-sites. Used to export statistics in - * /proc/fs/lustre/llite/fsN/dump_page_cache. - */ -enum { - LLAP_ORIGIN_UNKNOWN = 0, - LLAP_ORIGIN_READPAGE, - LLAP_ORIGIN_READAHEAD, - LLAP_ORIGIN_COMMIT_WRITE, - LLAP_ORIGIN_WRITEPAGE, - LLAP_ORIGIN_REMOVEPAGE, - LLAP__ORIGIN_MAX, -}; -extern char *llap_origins[]; - -#ifdef HAVE_REGISTER_CACHE -#define ll_register_cache(cache) register_cache(cache) -#define ll_unregister_cache(cache) unregister_cache(cache) -#else -#define ll_register_cache(cache) do {} while (0) -#define ll_unregister_cache(cache) do {} while (0) -#endif 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); @@ -461,37 +580,46 @@ static void lprocfs_llite_init_vars(struct lprocfs_static_vars *lvars) /* 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 file *filp, struct inode *dir, __u64 hash, + int exact, struct ll_dir_chain *chain); +int ll_get_mdt_idx(struct inode *inode); /* llite/namei.c */ -int ll_objects_destroy(struct ptlrpc_request *request, struct inode *dir); +int ll_objects_destroy(struct ptlrpc_request *request, + 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_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); /* llite/rw.c */ int ll_prepare_write(struct file *, struct page *, unsigned from, unsigned to); int ll_commit_write(struct file *, struct page *, unsigned from, unsigned to); -int ll_writepage(struct page *page); -void ll_inode_fill_obdo(struct inode *inode, int cmd, struct obdo *oa); -int ll_ap_completion(void *data, int cmd, struct obdo *oa, int rc); -int llap_shrink_cache(struct ll_sb_info *sbi, int shrink_fraction); -struct ll_async_page *llap_from_page(struct page *page, unsigned origin); -extern struct cache_definition ll_cache_definition; +int ll_writepage(struct page *page, struct writeback_control *wbc); void ll_removepage(struct page *page); int ll_readpage(struct file *file, struct page *page); -struct ll_async_page *llap_cast_private(struct page *page); void ll_readahead_init(struct inode *inode, struct ll_readahead_state *ras); -void ll_ra_accounting(struct ll_async_page *llap,struct address_space *mapping); void ll_truncate(struct inode *inode); +int ll_file_punch(struct inode *, loff_t, int); +ssize_t ll_file_lockless_io(struct file *, char *, size_t, loff_t *, int); +void ll_clear_file_contended(struct inode*); int ll_sync_page_range(struct inode *, struct address_space *, loff_t, size_t); +int ll_readahead(const struct lu_env *env, struct cl_io *io, struct ll_readahead_state *ras, + struct address_space *mapping, struct cl_page_list *queue, int flags); /* llite/file.c */ extern struct file_operations ll_file_operations; @@ -499,21 +627,16 @@ 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_inode_revalidate_it(struct dentry *, struct lookup_intent *); -extern int ll_have_md_lock(struct inode *inode, __u64 bits); +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); -int ll_extent_lock(struct ll_file_data *, struct inode *, - struct lov_stripe_md *, int mode, ldlm_policy_data_t *, - struct lustre_handle *, int ast_flags); -int ll_extent_unlock(struct ll_file_data *, struct inode *, - struct lov_stripe_md *, int mode, struct lustre_handle *); +int __ll_inode_revalidate_it(struct dentry *, struct lookup_intent *, __u64 bits); +int ll_revalidate_nd(struct dentry *dentry, struct nameidata *nd); int ll_file_open(struct inode *inode, struct file *file); int ll_file_release(struct inode *inode, struct file *file); -int ll_lsm_getattr(struct obd_export *, struct lov_stripe_md *, struct obdo *); -int ll_local_size(struct inode *inode); int ll_glimpse_ioctl(struct ll_sb_info *sbi, struct lov_stripe_md *lsm, lstat_t *st); -int ll_glimpse_size(struct inode *inode, int ast_flags); +void ll_ioepoch_open(struct ll_inode_info *lli, __u64 ioepoch); int ll_local_open(struct file *file, struct lookup_intent *it, struct ll_file_data *fd, struct obd_client_handle *och); @@ -521,22 +644,28 @@ 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); -void ll_epoch_close(struct inode *inode, struct md_op_data *op_data, - struct obd_client_handle **och, unsigned long flags); -int ll_sizeonmds_update(struct inode *inode, struct md_open_data *data, - struct lustre_handle *fh, __u64 ioepoch); -int ll_inode_getattr(struct inode *inode, struct obdo *obdo); +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); +int ll_som_update(struct inode *inode, struct md_op_data *op_data); +int ll_inode_getattr(struct inode *inode, struct obdo *obdo, + __u64 ioepoch, int sync); int ll_md_setattr(struct inode *inode, struct md_op_data *op_data, struct md_open_data **mod); void ll_pack_inode2opdata(struct inode *inode, struct md_op_data *op_data, struct lustre_handle *fh); -extern void ll_rw_stats_tally(struct ll_sb_info *sbi, pid_t pid, struct file - *file, size_t count, int rw); +extern void ll_rw_stats_tally(struct ll_sb_info *sbi, pid_t pid, + struct ll_file_data *file, loff_t pos, + size_t count, int rw); int ll_getattr_it(struct vfsmount *mnt, struct dentry *de, struct lookup_intent *it, struct kstat *stat); int ll_getattr(struct vfsmount *mnt, struct dentry *de, struct kstat *stat); struct ll_file_data *ll_file_data_get(void); +#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 int ll_lov_setstripe_ea_info(struct inode *inode, struct file *file, int flags, struct lov_user_md *lum, int lum_size); @@ -545,20 +674,33 @@ int ll_lov_getstripe_ea_info(struct inode *inode, const char *filename, struct ptlrpc_request **request); int ll_dir_setstripe(struct inode *inode, struct lov_user_md *lump, int set_default); -int ll_dir_getstripe(struct inode *inode, struct lov_mds_md **lmm, +int ll_dir_getstripe(struct inode *inode, struct lov_mds_md **lmm, int *lmm_size, struct ptlrpc_request **request); +int ll_fsync(struct file *file, struct dentry *dentry, int data); +int ll_do_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 + */ +int ll_dops_init(struct dentry *de, int block); +extern cfs_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_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 ll_dcompare(struct dentry *parent, struct qstr *d_name, struct qstr *name); -int ll_revalidate_it_finish(struct ptlrpc_request *request, int offset, +int ll_revalidate_it_finish(struct ptlrpc_request *request, struct lookup_intent *it, struct dentry *de); /* llite/llite_lib.c */ @@ -569,6 +711,7 @@ void ll_lli_init(struct ll_inode_info *lli); int ll_fill_super(struct super_block *sb); void ll_put_super(struct super_block *sb); void ll_kill_super(struct super_block *sb); +int ll_shrink_cache(int nr_to_scan, gfp_t gfp_mask); struct inode *ll_inode_from_lock(struct ldlm_lock *lock); void ll_clear_inode(struct inode *inode); int ll_setattr_raw(struct inode *inode, struct iattr *attr); @@ -579,7 +722,7 @@ int ll_statfs(struct super_block *sb, struct kstatfs *sfs); int ll_statfs(struct dentry *de, struct kstatfs *sfs); #endif int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs, - __u64 max_age); + __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); @@ -592,17 +735,14 @@ void ll_umount_begin(struct vfsmount *vfsmnt, int flags); void ll_umount_begin(struct super_block *sb); #endif int ll_remount_fs(struct super_block *sb, int *flags, char *data); +int ll_show_options(struct seq_file *seq, struct vfsmount *vfs); int ll_prep_inode(struct inode **inode, struct ptlrpc_request *req, - int offset, struct super_block *); + struct super_block *); void lustre_dump_dentry(struct dentry *, int recur); void lustre_dump_inode(struct inode *); -struct ll_async_page *llite_pglist_next_llap(struct ll_sb_info *sbi, - struct list_head *list); int ll_obd_statfs(struct inode *inode, void *arg); int ll_get_max_mdsize(struct ll_sb_info *sbi, int *max_mdsize); int ll_process_config(struct lustre_cfg *lcfg); -int ll_ioctl_getfacl(struct inode *inode, struct rmtacl_ioctl_data *ioc); -int ll_ioctl_setfacl(struct inode *inode, struct rmtacl_ioctl_data *ioc); 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, @@ -612,9 +752,6 @@ 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); /* llite/special.c */ extern struct inode_operations ll_special_inode_operations; @@ -630,16 +767,179 @@ 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_head; - wait_queue_head_t lcq_waitq; - struct completion lcq_comp; - atomic_t lcq_stop; + cfs_spinlock_t lcq_lock; + cfs_list_t lcq_head; + cfs_waitq_t lcq_waitq; + cfs_completion_t lcq_comp; + cfs_atomic_t lcq_stop; +}; + +struct ccc_object *cl_inode2ccc(struct inode *inode); + + +void vvp_write_pending (struct ccc_object *club, struct ccc_page *page); +void vvp_write_complete(struct ccc_object *club, struct ccc_page *page); + +/* specific achitecture can implement only part of this list */ +enum vvp_io_subtype { + /** normal IO */ + IO_NORMAL, + /** io called from .sendfile */ + IO_SENDFILE, + /** io started from splice_{read|write} */ + IO_SPLICE }; -void llap_write_pending(struct inode *inode, struct ll_async_page *llap); -int llap_write_complete(struct inode *inode, struct ll_async_page *llap); -int ll_inode_dirty(struct inode *inode, unsigned long flags); +/* IO subtypes */ +struct vvp_io { + /** io subtype */ + enum vvp_io_subtype cui_io_subtype; + + union { + struct { + read_actor_t cui_actor; + void *cui_target; + } sendfile; + struct { + struct pipe_inode_info *cui_pipe; + unsigned int cui_flags; + } splice; + struct vvp_fault_io { + /** + * Inode modification time that is checked across DLM + * lock request. + */ + time_t ft_mtime; + struct vm_area_struct *ft_vma; + /** + * 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 vm_fault_api { + /** + * kernel fault info + */ + struct vm_fault *ft_vmf; + /** + * fault API used bitflags for return code. + */ + unsigned int ft_flags; + } fault; +#endif + } 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; + /** + * Partially truncated page, that vvp_io_trunc_start() keeps locked + * across truncate. + */ + struct cl_page *cui_partpage; +}; + +/** + * IO arguments for various VFS I/O interfaces. + */ +struct vvp_io_args { + /** normal/sendfile/splice */ + enum vvp_io_subtype via_io_subtype; + + union { + struct { +#ifndef HAVE_FILE_WRITEV + struct kiocb *via_iocb; +#endif + struct iovec *via_iov; + unsigned long via_nrsegs; + } normal; + struct { + read_actor_t via_actor; + void *via_target; + } sendfile; + struct { + struct pipe_inode_info *via_pipe; + unsigned int via_flags; + } splice; + } u; +}; + +struct ll_cl_context { + void *lcc_cookie; + struct cl_io *lcc_io; + struct cl_page *lcc_page; + struct lu_env *lcc_env; + int lcc_refcheck; + int lcc_created; +}; + +struct vvp_thread_info { + struct ost_lvb vti_lvb; + struct cl_2queue vti_queue; + struct iovec vti_local_iov; + struct vvp_io_args vti_args; + struct ra_io_arg vti_ria; + struct kiocb vti_kiocb; + struct ll_cl_context vti_io_ctx; +}; + +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; +} + +static inline struct vvp_io_args *vvp_env_args(const struct lu_env *env, + enum vvp_io_subtype type) +{ + struct vvp_io_args *ret = &vvp_env_info(env)->vti_args; + + ret->via_io_subtype = type; + + return ret; +} + +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); @@ -651,28 +951,20 @@ typedef struct rb_node rb_node_t; 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; + cfs_list_t lt_locked_list; + struct ll_file_data *lt_fd; }; int ll_teardown_mmaps(struct address_space *mapping, __u64 first, __u64 last); int ll_file_mmap(struct file * file, struct vm_area_struct * vma); struct ll_lock_tree_node * ll_node_from_inode(struct inode *inode, __u64 start, __u64 end, ldlm_mode_t mode); -int ll_tree_lock(struct ll_lock_tree *tree, - struct ll_lock_tree_node *first_node, - const char *buf, size_t count, int ast_flags); -int ll_tree_unlock(struct ll_lock_tree *tree); +void policy_from_vma(ldlm_policy_data_t *policy, + struct vm_area_struct *vma, unsigned long addr, size_t count); +struct vm_area_struct *our_vma(unsigned long addr, size_t count); #define ll_s2sbi(sb) (s2lsi(sb)->lsi_llsbi) -void __d_rehash(struct dentry * entry, int lock); -static inline __u64 ll_ts2u64(struct timespec *time) -{ - __u64 t = time->tv_sec; - return t; -} - /* don't need an addref as the sb_info should be holding one */ static inline struct obd_export *ll_s2dtexp(struct super_block *sb) { @@ -740,14 +1032,11 @@ int ll_removexattr(struct dentry *dentry, const char *name); extern cfs_mem_cache_t *ll_remote_perm_cachep; extern cfs_mem_cache_t *ll_rmtperm_hash_cachep; -struct hlist_head *alloc_rmtperm_hash(void); -void free_rmtperm_hash(struct hlist_head *hash); +cfs_hlist_head_t *alloc_rmtperm_hash(void); +void free_rmtperm_hash(cfs_hlist_head_t *hash); 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_fid.c */ -ino_t ll_fid_build_ino(struct ll_sb_info *sbi, struct lu_fid *fid); - /* llite/llite_capa.c */ extern cfs_timer_t ll_capa_timer; @@ -768,6 +1057,153 @@ void ll_truncate_free_capa(struct obd_capa *ocapa); void ll_clear_inode_capas(struct inode *inode); void ll_print_capa_stat(struct ll_sb_info *sbi); +/* llite/llite_cl.c */ +extern struct lu_device_type vvp_device_type; + +/** + * Common IO arguments for various VFS I/O interfaces. + */ + +int cl_sb_init(struct super_block *sb); +int cl_sb_fini(struct super_block *sb); +int cl_inode_init(struct inode *inode, struct lustre_md *md); +void cl_inode_fini(struct inode *inode); + +enum cl_lock_mode vvp_mode_from_vma(struct vm_area_struct *vma); +void ll_io_init(struct cl_io *io, const struct file *file, int write); + +void ras_update(struct ll_sb_info *sbi, struct inode *inode, + struct ll_readahead_state *ras, unsigned long index, + unsigned hit); +void ll_ra_count_put(struct ll_sb_info *sbi, unsigned long len); +int ll_is_file_contended(struct file *file); +void ll_ra_stats_inc(struct address_space *mapping, enum ra_stat which); + +/* llite/llite_rmtacl.c */ +#ifdef CONFIG_FS_POSIX_ACL +obd_valid rce_ops2valid(int ops); +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 */ + cfs_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 */ + cfs_list_t sai_entries_sent; /* entries sent out */ + cfs_list_t sai_entries_received; /* entries returned */ + cfs_list_t sai_entries_stated; /* entries stated */ + pid_t sai_pid; /* pid of statahead itself */ +}; + +int do_statahead_enter(struct inode *dir, struct dentry **dentry, int lookup); +void ll_statahead_exit(struct inode *dir, struct dentry *dentry, int result); +void ll_stop_statahead(struct inode *dir, void *key); + +static inline +void ll_statahead_mark(struct inode *dir, struct dentry *dentry) +{ + struct ll_inode_info *lli; + struct ll_dentry_data *ldd = ll_d2d(dentry); + + /* dentry has been move to other directory, no need mark */ + if (unlikely(dir != dentry->d_parent->d_inode)) + return; + + lli = ll_i2info(dir); + /* not the same process, don't mark */ + if (lli->lli_opendir_pid != cfs_curproc_pid()) + return; + + cfs_spin_lock(&lli->lli_sa_lock); + if (likely(lli->lli_sai != NULL && ldd != NULL)) + ldd->lld_sa_generation = lli->lli_sai->sai_generation; + cfs_spin_unlock(&lli->lli_sa_lock); +} + +static inline +int ll_statahead_enter(struct inode *dir, struct dentry **dentryp, int lookup) +{ + struct ll_inode_info *lli; + struct ll_dentry_data *ldd = ll_d2d(*dentryp); + + if (unlikely(dir == NULL)) + return -EAGAIN; + + if (ll_i2sbi(dir)->ll_sa_max == 0) + return -ENOTSUPP; + + lli = ll_i2info(dir); + /* not the same process, don't statahead */ + if (lli->lli_opendir_pid != cfs_curproc_pid()) + return -EAGAIN; + + /* + * 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); +} + /* llite ioctl register support rountine */ #ifdef __KERNEL__ enum llioc_iter { @@ -783,36 +1219,108 @@ enum llioc_iter { * Parameters: * @magic: Dynamic ioctl call routine will feed this vaule with the pointer * returned to ll_iocontrol_register. Callback functions should use this - * data to check the potential collasion of ioctl cmd. If collasion is + * data to check the potential collasion of ioctl cmd. If collasion is * found, callback function should return LLIOC_CONT. * @rcp: The result of ioctl command. * * Return values: - * If @magic matches the pointer returned by ll_iocontrol_data, the + * If @magic matches the pointer returned by ll_iocontrol_data, the * callback should return LLIOC_STOP; return LLIOC_STOP otherwise. */ -typedef enum llioc_iter (*llioc_callback_t)(struct inode *inode, +typedef enum llioc_iter (*llioc_callback_t)(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg, void *magic, int *rcp); -enum llioc_iter ll_iocontrol_call(struct inode *inode, struct file *file, +enum llioc_iter ll_iocontrol_call(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg, int *rcp); /* export functions */ -/* Register ioctl block dynamatically for a regular file. +/* Register ioctl block dynamatically for a regular file. * * @cmd: the array of ioctl command set * @count: number of commands in the @cmd - * @cb: callback function, it will be called if an ioctl command is found to + * @cb: callback function, it will be called if an ioctl command is found to * belong to the command list @cmd. * * Return vaule: - * A magic pointer will be returned if success; - * otherwise, NULL will be returned. + * A magic pointer will be returned if success; + * otherwise, NULL will be returned. * */ void *ll_iocontrol_register(llioc_callback_t cb, int count, unsigned int *cmd); void ll_iocontrol_unregister(void *magic); #endif +/* lclient compat stuff */ +#define cl_inode_info ll_inode_info +#define cl_i2info(info) ll_i2info(info) +#define cl_inode_mode(inode) ((inode)->i_mode) +#define cl_i2sbi ll_i2sbi + +static inline void cl_isize_lock(struct inode *inode, int lsmlock) +{ + ll_inode_size_lock(inode, lsmlock); +} + +static inline void cl_isize_unlock(struct inode *inode, int lsmlock) +{ + ll_inode_size_unlock(inode, lsmlock); +} + +static inline 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); +} + +static inline void cl_isize_write(struct inode *inode, loff_t kms) +{ + ll_inode_size_lock(inode, 0); + i_size_write(inode, kms); + ll_inode_size_unlock(inode, 0); +} + +#define cl_isize_read(inode) i_size_read(inode) + +static inline int cl_merge_lvb(struct inode *inode) +{ + return ll_merge_lvb(inode); +} + +#define cl_inode_atime(inode) LTIME_S((inode)->i_atime) +#define cl_inode_ctime(inode) LTIME_S((inode)->i_ctime) +#define cl_inode_mtime(inode) LTIME_S((inode)->i_mtime) + +struct obd_capa *cl_capa_lookup(struct inode *inode, enum cl_req_type crt); + +/** direct write pages */ +struct ll_dio_pages { + /** page array to be written. we don't support + * partial pages except the last one. */ + struct page **ldp_pages; + /* offset of each page */ + loff_t *ldp_offsets; + /** if ldp_offsets is NULL, it means a sequential + * pages to be written, then this is the file offset + * of the * first page. */ + loff_t ldp_start_offset; + /** how many bytes are to be written. */ + size_t ldp_size; + /** # of pages in the array. */ + int ldp_nr; +}; + +extern ssize_t ll_direct_rw_pages(const struct lu_env *env, struct cl_io *io, + int rw, struct inode *inode, + struct ll_dio_pages *pv); + +static inline int ll_file_nolock(const struct file *file) +{ + struct ll_file_data *fd = LUSTRE_FPRIVATE(file); + struct inode *inode = file->f_dentry->d_inode; + + LASSERT(fd != NULL); + return ((fd->fd_flags & LL_FILE_IGNORE_LOCK) || + (ll_i2sbi(inode)->ll_flags & LL_SBI_NOLCK)); +} #endif /* LLITE_INTERNAL_H */