#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>
+
#ifndef FMODE_EXEC
#define FMODE_EXEC 0
#endif
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))
* 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;
* dir statahead.
*/
pid_t lli_opendir_pid;
- /*
+ /*
* since parent-child threads can share the same @file struct,
* "opendir_key" is the token when dir close for case of parent exit
* before child -- it is me should cleanup the dir readahead. */
void *lli_opendir_key;
struct ll_statahead_info *lli_sai;
+ struct cl_object *lli_clob;
};
/*
_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;
unsigned long ra_max_pages;
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_OSS_CAPA 0x100 /* support oss capa */
#define LL_SBI_LOCALFLOCK 0x200 /* Local flocks support by kernel */
#define LL_SBI_LRU_RESIZE 0x400 /* lru resize support */
+#define LL_SBI_LAZYSTATFS 0x800 /* lazystatfs mount option */
/* default value for ll_sb_info->contention_time */
#define SBI_DEFAULT_CONTENTION_SECONDS 60
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;
-};
-
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. */
+ /* this protects pglist and ra_info. It isn't safe to
+ * grab from interrupt contexts */
spinlock_t ll_lock;
spinlock_t ll_pp_extent_lock; /* Lock for pp_extent entries */
spinlock_t ll_process_lock; /* Lock for ll_rw_process_info */
struct 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;
* >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;
#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;
* protected by ->ras_lock.
*/
struct list_head ras_read_beads;
- /*
+ /*
* The following 3 items are used for detecting the stride I/O
- * mode.
- * In stride I/O mode,
- * ...............|-----data-----|****gap*****|--------|******|....
- * offset |-stride_pages-|-stride_gap-|
+ * 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;
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,
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 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;
-};
-
-static inline struct ll_async_page *llap_from_cookie(void *ptr)
-{
- struct ll_async_page *ap = ptr;
- LASSERT(ap->llap_magic == LLAP_MAGIC);
- return ap;
-}
-
-/*
- * 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>
/* 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 int ll_have_md_lock(struct inode *inode, __u64 bits);
extern ldlm_mode_t ll_take_md_lock(struct inode *inode, __u64 bits,
struct lustre_handle *lockh);
-int ll_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);
int ll_local_open(struct file *file,
struct lookup_intent *it, struct ll_file_data *fd,
struct obd_client_handle *och);
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_sizeonmds_update(struct inode *inode, struct lustre_handle *fh,
+ __u64 ioepoch);
int ll_inode_getattr(struct inode *inode, struct obdo *obdo);
int ll_md_setattr(struct inode *inode, struct md_op_data *op_data,
struct md_open_data **mod);
void ll_pack_inode2opdata(struct inode *inode, struct md_op_data *op_data,
struct lustre_handle *fh);
-extern void ll_rw_stats_tally(struct ll_sb_info *sbi, pid_t pid, struct 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 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_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);
/* 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;
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);
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);
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 vvp_thread_info {
+ struct ost_lvb vti_lvb;
+ struct cl_2queue vti_queue;
+ struct iovec vti_local_iov;
+ struct ccc_io_args vti_args;
+ struct ra_io_arg vti_ria;
+ struct kiocb vti_kiocb;
+};
+
+struct ccc_object *cl_inode2ccc(struct inode *inode);
+
+static inline struct vvp_thread_info *vvp_env_info(const struct lu_env *env)
+{
+ extern struct lu_context_key vvp_key;
+ struct vvp_thread_info *info;
+
+ info = lu_context_key_get(&env->le_ctx, &vvp_key);
+ LASSERT(info != NULL);
+ return info;
+}
+
+void vvp_write_pending (struct ccc_object *club, struct ccc_page *page);
+void vvp_write_complete(struct ccc_object *club, struct ccc_page *page);
+
+struct vvp_io {
+ union {
+ struct {
+ read_actor_t cui_actor;
+ void *cui_target;
+ } read;
+ struct vvp_fault_io {
+ /**
+ * Inode modification time that is checked across DLM
+ * lock request.
+ */
+ time_t ft_mtime;
+ struct vm_area_struct *ft_vma;
+ /**
+ * Virtual address at which fault occurred.
+ */
+ unsigned long ft_address;
+ /**
+ * Fault type, as to be supplied to filemap_nopage().
+ */
+ int *ft_type;
+ } fault;
+ } u;
+ /**
+ * Read-ahead state used by read and page-fault IO contexts.
+ */
+ struct ll_ra_read cui_bead;
+ /**
+ * Set when cui_bead has been initialized.
+ */
+ int cui_ra_window_set;
+ /**
+ * If IO was created directly in low level method like
+ * ->prepare_write(), this field stores the number of method calls
+ * that constitute this IO. This field is decremented by ll_cl_fini(),
+ * and cl_io is destroyed, when it reaches 0. When oneshot IO
+ * completes, this fields is set to -1.
+ */
+
+ int cui_oneshot;
+ /**
+ * Partially truncated page, that vvp_io_trunc_start() keeps locked
+ * across truncate.
+ */
+ struct cl_page *cui_partpage;
+};
+
+struct vvp_session {
+ struct vvp_io vs_ios;
+};
+
+static inline struct vvp_session *vvp_env_session(const struct lu_env *env)
+{
+ extern struct lu_context_key vvp_session_key;
+ struct vvp_session *ses;
+
+ ses = lu_context_key_get(env->le_ses, &vvp_session_key);
+ LASSERT(ses != NULL);
+ return ses;
+}
+
+static inline struct vvp_io *vvp_env_io(const struct lu_env *env)
+{
+ return &vvp_env_session(env)->vs_ios;
+}
+
void ll_queue_done_writing(struct inode *inode, unsigned long flags);
void ll_close_thread_shutdown(struct ll_close_queue *lcq);
int ll_close_thread_start(struct ll_close_queue **lcq_ret);
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)
/* llite/llite_fid.c */
ino_t ll_fid_build_ino(struct ll_sb_info *sbi, struct lu_fid *fid);
+__u32 ll_fid_build_gen(struct ll_sb_info *sbi, struct lu_fid *fid);
/* 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);
+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);
/* 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
* refcount */
};
int do_statahead_enter(struct inode *dir, struct dentry **dentry, int lookup);
-int ll_statahead_exit(struct dentry *dentry, int result);
+void ll_statahead_exit(struct dentry *dentry, int result);
void ll_stop_statahead(struct inode *inode, void *key);
static inline
-void ll_d_wakeup(struct dentry *dentry)
+void ll_statahead_mark(struct dentry *dentry)
{
- struct ll_dentry_data *lld = ll_d2d(dentry);
+ struct ll_inode_info *lli = ll_i2info(dentry->d_parent->d_inode);
+ struct ll_dentry_data *ldd = ll_d2d(dentry);
- LASSERT(dentry->d_op != &ll_init_d_ops);
- if (lld != NULL)
- cfs_waitq_broadcast(&lld->lld_waitq);
+ /* not the same process, don't mark */
+ if (lli->lli_opendir_pid != cfs_curproc_pid())
+ return;
+
+ spin_lock(&lli->lli_lock);
+ if (likely(lli->lli_sai != NULL && ldd != NULL))
+ ldd->lld_sa_generation = lli->lli_sai->sai_generation;
+ spin_unlock(&lli->lli_lock);
}
static inline
* "IT_GETATTR" for the first time, and the subsequent "IT_GETATTR"
* will bypass interacting with statahead thread for checking:
* "lld_sa_generation == lli_sai->sai_generation"
- */
+ */
if (ldd && lli->lli_sai &&
ldd->lld_sa_generation == lli->lli_sai->sai_generation)
return -EAGAIN;
return do_statahead_enter(dir, dentryp, lookup);
}
+static void inline ll_dops_init(struct dentry *de, int block)
+{
+ struct ll_dentry_data *lld = ll_d2d(de);
+
+ if (lld == NULL && block != 0) {
+ ll_set_dd(de);
+ lld = ll_d2d(de);
+ }
+
+ if (lld != NULL)
+ lld->lld_sa_generation = 0;
+
+ de->d_op = &ll_d_ops;
+}
+
/* llite ioctl register support rountine */
#ifdef __KERNEL__
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
+#define cl_isize_read(inode) i_size_read(inode)
+#define cl_isize_write(inode,kms) i_size_write(inode, kms)
+#define cl_isize_write_nolock(inode,kms) do {(inode)->i_size=(kms);}while(0)
+
+static inline void cl_isize_lock(struct inode *inode, int lsmlock)
+{
+ 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 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);
+
#endif /* LLITE_INTERNAL_H */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff