-/* -*- 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.
* GPL HEADER END
*/
/*
- * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2012, Whamcloud, Inc.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#include <lustre_disk.h> /* for s2sbi */
#include <lustre_eacl.h>
+/* for struct cl_lock_descr and struct cl_io */
+#include <cl_object.h>
+#include <lclient.h>
+#include <lustre_mdc.h>
+#include <linux/lustre_intent.h>
+
#ifndef FMODE_EXEC
#define FMODE_EXEC 0
#endif
-#define LL_IT2STR(it) ((it) ? ldlm_it2str((it)->it_op) : "0")
-#define LUSTRE_FPRIVATE(file) ((file)->private_data)
+#ifndef VM_FAULT_RETRY
+#define VM_FAULT_RETRY 0
+#endif
-#ifdef HAVE_VFS_INTENT_PATCHES
-static inline struct lookup_intent *ll_nd2it(struct nameidata *nd)
-{
- return &nd->intent;
-}
+/** 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
+
+#ifndef DCACHE_LUSTRE_INVALID
+#define DCACHE_LUSTRE_INVALID 0x4000000
#endif
+#define LL_IT2STR(it) ((it) ? ldlm_it2str((it)->it_op) : "0")
+#define LUSTRE_FPRIVATE(file) ((file)->private_data)
+
struct ll_dentry_data {
int lld_cwd_count;
int lld_mnt_count;
struct obd_client_handle lld_cwd_och;
struct obd_client_handle lld_mnt_och;
-#ifndef HAVE_VFS_INTENT_PATCHES
struct lookup_intent *lld_it;
-#endif
unsigned int lld_sa_generation;
- cfs_waitq_t lld_waitq;
};
#define ll_d2d(de) ((struct ll_dentry_data*)((de)->d_fsdata))
/* remote client permission cache */
#define REMOTE_PERM_HASHSIZE 16
+struct ll_getname_data {
+ 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;
+ cfs_hlist_node_t lrp_list;
uid_t lrp_uid;
gid_t lrp_gid;
uid_t lrp_fsuid;
* be sent to MDS. */
LLIF_SOM_DIRTY = (1 << 3),
/* File is contented */
- LLIF_CONTENDED = (1 << 4),
+ LLIF_CONTENDED = (1 << 4),
/* Truncate uses server lock for this file */
- LLIF_SRVLOCK = (1 << 5)
+ LLIF_SRVLOCK = (1 << 5),
};
struct ll_inode_info {
- int lli_inode_magic;
- struct semaphore lli_size_sem; /* protect open and change size */
- void *lli_size_sem_owner;
- struct semaphore lli_write_sem;
- char *lli_symlink_name;
- __u64 lli_maxbytes;
- __u64 lli_ioepoch;
- unsigned long lli_flags;
- cfs_time_t lli_contention_time;
-
- /* this lock protects posix_acl, pending_write_llaps, mmap_cnt */
- spinlock_t lli_lock;
- struct list_head lli_pending_write_llaps;
- struct list_head lli_close_list;
- /* handle is to be sent to MDS later on done_writing and setattr.
- * Open handle data are needed for the recovery to reconstruct
- * the inode state on the MDS. XXX: recovery is not ready yet. */
- struct obd_client_handle *lli_pending_och;
- atomic_t lli_mmap_cnt;
-
- /* for writepage() only to communicate to fsync */
- int lli_async_rc;
-
- struct posix_acl *lli_posix_acl;
+ __u32 lli_inode_magic;
+ __u32 lli_flags;
+ __u64 lli_ioepoch;
- /* remote permission hash */
- struct hlist_head *lli_remote_perms;
- unsigned long lli_rmtperm_utime;
- struct semaphore lli_rmtperm_sem;
+ cfs_spinlock_t lli_lock;
+ struct posix_acl *lli_posix_acl;
- struct list_head lli_dead_list;
-
- struct semaphore lli_och_sem; /* Protects access to och pointers
- and their usage counters */
- /* We need all three because every inode may be opened in different
- modes */
- struct obd_client_handle *lli_mds_read_och;
- __u64 lli_open_fd_read_count;
- struct obd_client_handle *lli_mds_write_och;
- __u64 lli_open_fd_write_count;
- struct obd_client_handle *lli_mds_exec_och;
- __u64 lli_open_fd_exec_count;
-
- struct inode lli_vfs_inode;
+ cfs_hlist_head_t *lli_remote_perms;
+ cfs_mutex_t lli_rmtperm_mutex;
/* identifying fields for both metadata and data stacks. */
- struct lu_fid lli_fid;
- struct lov_stripe_md *lli_smd;
+ struct lu_fid lli_fid;
+ /* Parent fid for accessing default stripe data on parent directory
+ * for allocating OST objects after a mknod() and later open-by-FID. */
+ struct lu_fid lli_pfid;
- /* fid capability */
+ cfs_list_t lli_close_list;
+ cfs_list_t lli_oss_capas;
/* open count currently used by capability only, indicate whether
* capability needs renewal */
- atomic_t lli_open_count;
- struct obd_capa *lli_mds_capa;
- struct list_head lli_oss_capas;
+ cfs_atomic_t lli_open_count;
+ struct obd_capa *lli_mds_capa;
+ cfs_time_t lli_rmtperm_time;
- /* metadata stat-ahead */
- /*
- * "opendir_pid" is the token when lookup/revalid -- I am the owner of
- * dir statahead.
+ /* 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;
+
+ /* 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, also
+ * atomicity of check-update of lli_smd */
+ cfs_mutex_t lli_och_mutex;
+
+ struct inode lli_vfs_inode;
+
+ /* the most recent timestamps obtained from mds */
+ struct ost_lvb lli_lvb;
+ cfs_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. */
+ cfs_mutex_t d_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 *d_opendir_key;
+ struct ll_statahead_info *d_sai;
+ __u64 d_sa_pos;
+ struct posix_acl *d_def_acl;
+ /* protect statahead stuff. */
+ cfs_spinlock_t d_sa_lock;
+ /* "opendir_pid" is the token when lookup/revalid
+ * -- I am the owner of dir statahead. */
+ pid_t d_opendir_pid;
+ } d;
+
+#define lli_readdir_mutex u.d.d_readdir_mutex
+#define lli_opendir_key u.d.d_opendir_key
+#define lli_sai u.d.d_sai
+#define lli_sa_pos u.d.d_sa_pos
+#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
+
+ /* for non-directory */
+ struct {
+ cfs_semaphore_t f_size_sem;
+ void *f_size_sem_owner;
+ char *f_symlink_name;
+ __u64 f_maxbytes;
+ /*
+ * cfs_rw_semaphore_t {
+ * signed long count; // align u.d.d_def_acl
+ * cfs_spinlock_t wait_lock; // align u.d.d_sa_lock
+ * struct list_head wait_list;
+ * }
+ */
+ cfs_rw_semaphore_t f_trunc_sem;
+ cfs_mutex_t f_write_mutex;
+
+ /* for writepage() only to communicate to fsync */
+ int f_async_rc;
+ int f_write_rc;
+
+ cfs_rw_semaphore_t f_glimpse_sem;
+ cfs_time_t f_glimpse_time;
+ cfs_list_t f_agl_list;
+ __u64 f_agl_index;
+ /*
+ * 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 f_jobid[JOBSTATS_JOBID_SIZE];
+ } f;
+
+#define lli_size_sem u.f.f_size_sem
+#define lli_size_sem_owner u.f.f_size_sem_owner
+#define lli_symlink_name u.f.f_symlink_name
+#define lli_maxbytes u.f.f_maxbytes
+#define lli_trunc_sem u.f.f_trunc_sem
+#define lli_write_mutex u.f.f_write_mutex
+#define lli_async_rc u.f.f_async_rc
+#define lli_write_rc u.f.f_write_rc
+#define lli_glimpse_sem u.f.f_glimpse_sem
+#define lli_glimpse_time u.f.f_glimpse_time
+#define lli_agl_list u.f.f_agl_list
+#define lli_agl_index u.f.f_agl_index
+#define lli_jobid u.f.f_jobid
+
+ } u;
+
+ /* 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.
*/
- pid_t lli_opendir_pid;
- /*
- * since parent-child threads can share the same @file struct,
- * "opendir_key" is the token when dir close for case of parent exit
- * before child -- it is me should cleanup the dir readahead. */
- void *lli_opendir_key;
- struct ll_statahead_info *lli_sai;
+ struct lov_stripe_md *lli_smd;
+ struct cl_object *lli_clob;
};
/*
_NR_RA_STAT,
};
-#define LL_RA_STAT _NR_RA_STAT
-#define LL_RA_STAT_STRINGS { \
- [RA_STAT_HIT] = "hits", \
- [RA_STAT_MISS] = "misses", \
- [RA_STAT_DISTANT_READPAGE] = "readpage not consecutive", \
- [RA_STAT_MISS_IN_WINDOW] = "miss inside window", \
- [RA_STAT_FAILED_GRAB_PAGE] = "failed grab_cache_page", \
- [RA_STAT_FAILED_MATCH] = "failed lock match", \
- [RA_STAT_DISCARDED] = "read but discarded", \
- [RA_STAT_ZERO_LEN] = "zero length file", \
- [RA_STAT_ZERO_WINDOW] = "zero size window", \
- [RA_STAT_EOF] = "read-ahead to EOF", \
- [RA_STAT_MAX_IN_FLIGHT] = "hit max r-a issue", \
- [RA_STAT_WRONG_GRAB_PAGE] = "wrong page from grab_cache_page",\
-}
-
struct ll_ra_info {
- atomic_t 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;
};
+/* 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 */
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 {
#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. */
+#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 */
/* default value for ll_sb_info->contention_time */
#define SBI_DEFAULT_CONTENTION_SECONDS 60
#define RCE_HASHES 32
struct rmtacl_ctl_entry {
- struct list_head rce_list;
+ cfs_list_t 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];
+ cfs_spinlock_t rct_lock;
+ cfs_list_t rct_entries[RCE_HASHES];
};
#define EE_HASHES 32
struct eacl_entry {
- struct list_head ee_list;
+ 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 */
};
struct eacl_table {
- spinlock_t et_lock;
- struct list_head et_entries[EE_HASHES];
-};
-
-/* percpu data structure for lustre lru page list */
-struct ll_pglist_data {
- spinlock_t llpd_lock; /* lock to protect llpg_list */
- struct list_head llpd_list; /* all pages (llap_pglist_item) */
- unsigned long llpd_gen; /* generation # of this list */
- unsigned long llpd_count; /* How many pages in this list */
- atomic_t llpd_sample_count;
- unsigned long llpd_reblnc_count;
- /* the pages in this list shouldn't be over this number */
- unsigned long llpd_budget;
- int llpd_cpu;
- /* which page the pglist data is in */
- struct page *llpd_page;
-
- /* stats */
- unsigned long llpd_hit;
- unsigned long llpd_miss;
- unsigned long llpd_cross;
+ cfs_spinlock_t et_lock;
+ cfs_list_t et_entries[EE_HASHES];
};
struct ll_sb_info {
- struct list_head ll_list;
- /* this protects pglist(only ll_async_page_max) 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_list_t ll_list;
+ /* this protects pglist and ra_info. It isn't safe to
+ * grab from interrupt contexts */
+ 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;
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 */
- /* reblnc lock protects llpd_budget */
- spinlock_t ll_async_page_reblnc_lock;
- unsigned long ll_async_page_reblnc_count;
- unsigned long ll_async_page_sample_max;
- /* I defined this array here rather than in ll_pglist_data
- * because it is always accessed by only one cpu. -jay */
- unsigned long *ll_async_page_sample;
unsigned long ll_async_page_max;
- unsigned long ll_async_page_clock_hand;
- lcounter_t ll_async_page_count;
- struct ll_pglist_data **ll_pglist;
+ unsigned long ll_async_page_count;
struct lprocfs_stats *ll_ra_stats;
- unsigned ll_contention_time; /* seconds */
- unsigned ll_lockless_truncate_enable; /* true/false */
-
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;
+ unsigned int ll_md_brw_size; /* used by readdir */
+ 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;
unsigned int ll_offset_process_count;
struct ll_rw_process_info ll_rw_offset_info[LL_OFFSET_HIST_MAX];
unsigned int ll_rw_offset_entry_count;
- enum stats_track_type ll_stats_track_type;
int ll_stats_track_id;
+ enum stats_track_type ll_stats_track_type;
int ll_rw_stats_on;
/* metadata stat-ahead */
unsigned int ll_sa_max; /* max statahead RPCs */
- unsigned int ll_sa_wrong; /* statahead thread stopped for
- * low hit ratio */
- unsigned int ll_sa_total; /* statahead thread started
+ atomic_t ll_sa_total; /* statahead thread started
* count */
- unsigned long long ll_sa_blocked; /* ls count waiting for
- * statahead */
- unsigned long long ll_sa_cached; /* ls count got in cache */
- unsigned long long ll_sa_hit; /* hit count */
- unsigned long long ll_sa_miss; /* miss count */
+ atomic_t ll_sa_wrong; /* statahead thread stopped for
+ * low hit ratio */
+ 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;
+ struct vfsmount *ll_mnt;
};
#define LL_DEFAULT_MAX_RW_CHUNK (32 * 1024 * 1024)
-#define LL_PGLIST_DATA_CPU(sbi, cpu) ((sbi)->ll_pglist[cpu])
-#define LL_PGLIST_DATA(sbi) LL_PGLIST_DATA_CPU(sbi, smp_processor_id())
-
-static inline struct ll_pglist_data *ll_pglist_cpu_lock(
- struct ll_sb_info *sbi,
- int cpu)
-{
- spin_lock(&sbi->ll_pglist[cpu]->llpd_lock);
- return LL_PGLIST_DATA_CPU(sbi, cpu);
-}
-
-static inline void ll_pglist_cpu_unlock(struct ll_sb_info *sbi, int cpu)
-{
- spin_unlock(&sbi->ll_pglist[cpu]->llpd_lock);
-}
-
-static inline struct ll_pglist_data *ll_pglist_double_lock(
- struct ll_sb_info *sbi,
- int cpu, struct ll_pglist_data **pd_cpu)
-{
- int current_cpu = get_cpu();
-
- if (cpu == current_cpu) {
- ll_pglist_cpu_lock(sbi, cpu);
- } else if (current_cpu < cpu) {
- ll_pglist_cpu_lock(sbi, current_cpu);
- ll_pglist_cpu_lock(sbi, cpu);
- } else {
- ll_pglist_cpu_lock(sbi, cpu);
- ll_pglist_cpu_lock(sbi, current_cpu);
- }
-
- if (pd_cpu)
- *pd_cpu = LL_PGLIST_DATA_CPU(sbi, cpu);
-
- return LL_PGLIST_DATA(sbi);
-}
-
-static inline void ll_pglist_double_unlock(struct ll_sb_info *sbi, int cpu)
-{
- int current_cpu = smp_processor_id();
- if (cpu == current_cpu) {
- ll_pglist_cpu_unlock(sbi, cpu);
- } else {
- ll_pglist_cpu_unlock(sbi, cpu);
- ll_pglist_cpu_unlock(sbi, current_cpu);
- }
- put_cpu();
-}
-
-static inline struct ll_pglist_data *ll_pglist_lock(struct ll_sb_info *sbi)
-{
- ll_pglist_cpu_lock(sbi, get_cpu());
- return LL_PGLIST_DATA(sbi);
-}
-
-static inline void ll_pglist_unlock(struct ll_sb_info *sbi)
-{
- ll_pglist_cpu_unlock(sbi, smp_processor_id());
- put_cpu();
-}
-
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.
* 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-|
+ * 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;
- /*
+ 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;
+ 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;
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;
}
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,
- llap_nocache:1,
- llap_lockless_io_page:1,
- llap_reserved:7;
- unsigned int llap_pglist_cpu:16;
- void *llap_cookie;
- struct page *llap_page;
- struct list_head llap_pending_write;
- struct list_head llap_pglist_item;
- /* checksum for paranoid I/O debugging */
- __u32 llap_checksum;
-};
-
-/*
- * enumeration of llap_from_page() call-sites. Used to export statistics in
- * /proc/fs/lustre/llite/fsN/dump_page_cache.
- */
-enum {
- LLAP_ORIGIN_UNKNOWN = 0,
- LLAP_ORIGIN_READPAGE,
- LLAP_ORIGIN_READAHEAD,
- LLAP_ORIGIN_COMMIT_WRITE,
- LLAP_ORIGIN_WRITEPAGE,
- LLAP_ORIGIN_REMOVEPAGE,
- LLAP_ORIGIN_LOCKLESS_IO,
- LLAP__ORIGIN_MAX,
-};
-extern char *llap_origins[];
-
-#ifdef HAVE_REGISTER_CACHE
-#include <linux/cache_def.h>
-#define ll_register_cache(cache) register_cache(cache)
-#define ll_unregister_cache(cache) unregister_cache(cache)
-#elif defined(HAVE_SHRINKER_CACHE)
-struct cache_definition {
- const char *name;
- shrinker_t shrink;
- struct shrinker *shrinker;
-};
-
-#define ll_register_cache(cache) do { \
- struct cache_definition *c = (cache); \
- c->shrinker = set_shrinker(DEFAULT_SEEKS, c->shrink); \
-} while(0)
-
-#define ll_unregister_cache(cache) do { \
- remove_shrinker((cache)->shrinker); \
- (cache)->shrinker = NULL; \
-} while(0)
-#else
-#define ll_register_cache(cache) do {} while (0)
-#define ll_unregister_cache(cache) do {} while (0)
-#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);
/* llite/dir.c */
-static inline void ll_put_page(struct page *page)
-{
- kunmap(page);
- page_cache_release(page);
-}
-
+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, int exact,
+struct page *ll_get_dir_page(struct file *filp, struct inode *dir, __u64 hash,
struct ll_dir_chain *chain);
+int ll_readdir(struct file *filp, void *cookie, filldir_t filldir);
+
+int ll_get_mdt_idx(struct inode *inode);
/* llite/namei.c */
int ll_objects_destroy(struct ptlrpc_request *request,
struct inode *dir);
struct lustre_md *lic);
int ll_md_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *,
void *data, int flag);
-#ifndef HAVE_VFS_INTENT_PATCHES
struct lookup_intent *ll_convert_intent(struct open_intent *oit,
int lookup_flags);
-#endif
int ll_lookup_it_finish(struct ptlrpc_request *request,
struct lookup_intent *it, void *data);
-void ll_lookup_finish_locks(struct lookup_intent *it, struct dentry *dentry);
+struct dentry *ll_find_alias(struct inode *inode, struct dentry *de);
/* 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;
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_inode_revalidate_it(struct dentry *, struct lookup_intent *,
+ __u64);
+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_region_mapped(unsigned long addr, size_t count);
-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);
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);
-int ll_md_setattr(struct inode *inode, struct md_op_data *op_data,
+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 dentry *dentry, 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);
+#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,
int flags, struct lov_user_md *lum,
int lum_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 **lmm,
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);
+#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);
-int ll_fiemap(struct inode *inode, struct ll_user_fiemap *fiemap,
+#endif
+int ll_do_fiemap(struct inode *inode, struct ll_user_fiemap *fiemap,
int num_bytes);
-void ll_pin_extent_cb(void *data);
-int ll_page_removal_cb(void *data, int discard);
-int ll_extent_lock_cancel_cb(struct ldlm_lock *lock, struct ldlm_lock_desc *new,
- void *data, int flag);
+int ll_merge_lvb(struct inode *inode);
+int ll_get_grouplock(struct inode *inode, struct file *file, unsigned long arg);
+int ll_put_grouplock(struct inode *inode, struct file *file, unsigned long arg);
+int ll_fid2path(struct obd_export *exp, void *arg);
/* llite/dcache.c */
-/* llite/namei.c */
-/**
- * protect race ll_find_aliases vs ll_revalidate_it vs ll_unhash_aliases
- */
-extern spinlock_t ll_lookup_lock;
-extern struct dentry_operations ll_init_d_ops;
+int ll_dops_init(struct dentry *de, int block, int init_sa);
+extern cfs_spinlock_t ll_lookup_lock;
extern struct dentry_operations ll_d_ops;
-extern struct dentry_operations ll_fini_d_ops;
-void ll_release(struct dentry *de);
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);
char *ll_read_opt(const char *opt, char *data);
void ll_lli_init(struct ll_inode_info *lli);
-int ll_fill_super(struct super_block *sb);
+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_lock(struct ldlm_lock *lock);
void ll_clear_inode(struct inode *inode);
-int ll_setattr_raw(struct inode *inode, struct iattr *attr);
+int ll_setattr_raw(struct dentry *dentry, struct iattr *attr);
int ll_setattr(struct dentry *de, struct iattr *attr);
#ifndef HAVE_STATFS_DENTRY_PARAM
int ll_statfs(struct super_block *sb, struct kstatfs *sfs);
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 list_head *head,
- 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);
const char *name, int namelen,
int 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);
/* 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;
/* 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;
};
-void llap_write_pending(struct inode *inode, struct ll_async_page *llap);
-int llap_write_complete(struct inode *inode, struct ll_async_page *llap);
-int ll_inode_dirty(struct inode *inode, unsigned long flags);
+struct 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
+};
+
+/* 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);
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(struct mm_struct *mm, unsigned long addr,
+ size_t count);
-#define ll_s2sbi(sb) (s2lsi(sb)->lsi_llsbi)
-
-static inline __u64 ll_ts2u64(struct timespec *time)
+static inline void ll_invalidate_page(struct page *vmpage)
{
- __u64 t = time->tv_sec;
- return t;
+ 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);
}
+#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)
{
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;
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);
+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);
/* statahead.c */
-#define LL_SA_RPC_MIN 2
-#ifdef CONFIG_SLUB /* can be removed once bug 16303 is fixed */
-#define LL_SA_RPC_DEF 0
-#else
-#define LL_SA_RPC_DEF 32
-#endif
-#define LL_SA_RPC_MAX 8192
+#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 inode *sai_inode;
- struct dentry *sai_first; /* first dentry item */
- unsigned int sai_generation; /* generation for statahead */
- atomic_t sai_refcount; /* when access this struct, hold
+ 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_generation; /* generation for statahead */
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:
+ __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, it includes
* hidden dentry miss;
* for "ls -l" case, it does not
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
+ 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 list_head sai_entries_sent; /* entries sent out */
- struct list_head sai_entries_received; /* entries returned */
- struct list_head sai_entries_stated; /* entries stated */
+ struct ptlrpc_thread sai_agl_thread; /* AGL 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 */
+ cfs_list_t sai_entries_agl; /* AGL entries to be sent */
+ cfs_list_t sai_cache[LL_SA_CACHE_SIZE];
+ cfs_spinlock_t sai_cache_lock[LL_SA_CACHE_SIZE];
+ cfs_atomic_t sai_cache_count; /* entry count in cache */
};
-int do_statahead_enter(struct inode *dir, struct dentry **dentry, int lookup);
-int ll_statahead_exit(struct dentry *dentry, int result);
-void ll_stop_statahead(struct inode *inode, void *key);
+int do_statahead_enter(struct inode *dir, struct dentry **dentry,
+ int only_unplug);
+void ll_stop_statahead(struct inode *dir, void *key);
-static inline
-void ll_d_wakeup(struct dentry *dentry)
+static inline int ll_glimpse_size(struct inode *inode)
{
- struct ll_dentry_data *lld = ll_d2d(dentry);
-
- LASSERT(dentry->d_op != &ll_init_d_ops);
- if (lld != NULL)
- cfs_waitq_broadcast(&lld->lld_waitq);
+ struct ll_inode_info *lli = ll_i2info(inode);
+ int rc;
+
+ cfs_down_read(&lli->lli_glimpse_sem);
+ rc = cl_glimpse_size(inode);
+ lli->lli_glimpse_time = cfs_time_current();
+ cfs_up_read(&lli->lli_glimpse_sem);
+ return rc;
}
-static inline
-int ll_statahead_enter(struct inode *dir, struct dentry **dentryp, int lookup)
+static inline void
+ll_statahead_mark(struct inode *dir, struct dentry *dentry)
{
- struct ll_sb_info *sbi = ll_i2sbi(dir);
struct ll_inode_info *lli = ll_i2info(dir);
- struct ll_dentry_data *ldd = ll_d2d(*dentryp);
+ 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;
+
+ if (sai != NULL && ldd != NULL)
+ ldd->lld_sa_generation = sai->sai_generation;
+}
- if (sbi->ll_sa_max == 0)
- return -ENOTSUPP;
+static inline int
+ll_statahead_enter(struct inode *dir, struct dentry **dentryp, int only_unplug)
+{
+ 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 != cfs_curproc_pid())
- return -EBADF;
+ return -EAGAIN;
+ ldd = ll_d2d(*dentryp);
/*
- * When "ls" a dentry, the system trigger more than once "revalidate" or
- * "lookup", for "getattr", for "getxattr", and maybe for others.
+ * 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,
- * it maybe misguide the statahead thread. For example:
+ * 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
* "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);
+ return do_statahead_enter(dir, dentryp, only_unplug);
}
/* llite ioctl register support rountine */
* 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 struct ll_file_data *cl_iattr2fd(struct inode *inode,
+ const struct iattr *attr)
+{
+ LASSERT(attr->ia_valid & ATTR_FILE);
+ return LUSTRE_FPRIVATE(attr->ia_file);
+}
+
+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);
+
+int cl_sync_file_range(struct inode *inode, loff_t start, loff_t end);
+
+/** 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;
+};
+
+static inline void cl_stats_tally(struct cl_device *dev, enum cl_req_type crt,
+ int rc)
+{
+ int opc = (crt == CRT_READ) ? LPROC_LL_OSC_READ :
+ LPROC_LL_OSC_WRITE;
+
+ ll_stats_ops_tally(ll_s2sbi(cl2ccc_dev(dev)->cdv_sb), opc, rc);
+}
+
+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));
+}
+
+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;
+}
+
+static inline void ll_dentry_rehash(struct dentry *dentry, int locked)
+{
+ if (!locked) {
+ cfs_spin_lock(&ll_lookup_lock);
+ spin_lock(&dcache_lock);
+ }
+ if (d_unhashed(dentry))
+ d_rehash_cond(dentry, 0);
+ if (!locked) {
+ spin_unlock(&dcache_lock);
+ cfs_spin_unlock(&ll_lookup_lock);
+ }
+}
+
+static inline void ll_dentry_reset_flags(struct dentry *dentry, __u64 bits)
+{
+ if (bits & MDS_INODELOCK_LOOKUP &&
+ dentry->d_flags & DCACHE_LUSTRE_INVALID) {
+ lock_dentry(dentry);
+ dentry->d_flags &= ~DCACHE_LUSTRE_INVALID;
+ unlock_dentry(dentry);
+ }
+}
+
+#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2,7,50,0)
+/* Compatibility for old (1.8) compiled userspace quota code */
+struct if_quotactl_18 {
+ __u32 qc_cmd;
+ __u32 qc_type;
+ __u32 qc_id;
+ __u32 qc_stat;
+ struct obd_dqinfo qc_dqinfo;
+ struct obd_dqblk qc_dqblk;
+ char obd_type[16];
+ struct obd_uuid obd_uuid;
+};
+#define LL_IOC_QUOTACTL_18 _IOWR('f', 162, struct if_quotactl_18 *)
+/* End compatibility for old (1.8) compiled userspace quota code */
+#else
+#warning "remove old LL_IOC_QUOTACTL_18 compatibility code"
+#endif /* LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2,7,50,0) */
+
#endif /* LLITE_INTERNAL_H */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff