-/* -*- 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) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2013, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#ifndef LCLIENT_H
#define LCLIENT_H
-int cl_glimpse_size(struct inode *inode);
+#include <lustre/lustre_idl.h>
+#include <cl_object.h>
+
+enum obd_notify_event;
+struct inode;
+struct lov_stripe_md;
+struct lustre_md;
+struct obd_capa;
+struct obd_device;
+struct obd_export;
+struct page;
+
+blkcnt_t dirty_cnt(struct inode *inode);
+
+int cl_glimpse_size0(struct inode *inode, int agl);
int cl_glimpse_lock(const struct lu_env *env, struct cl_io *io,
- struct inode *inode, struct cl_object *clob);
+ struct inode *inode, struct cl_object *clob, int agl);
-/**
- * Common IO arguments for various VFS I/O interfaces.
- */
-struct ccc_io_args {
- int cia_is_sendfile;
-#ifndef HAVE_FILE_WRITEV
- struct kiocb *cia_iocb;
-#endif
- struct iovec *cia_iov;
- unsigned long cia_nrsegs;
- read_actor_t cia_actor;
- void *cia_target;
-};
+static inline int cl_glimpse_size(struct inode *inode)
+{
+ return cl_glimpse_size0(inode, 0);
+}
+
+static inline int cl_agl(struct inode *inode)
+{
+ return cl_glimpse_size0(inode, 1);
+}
/**
- * Locking policy for truncate.
+ * Locking policy for setattr.
*/
-enum ccc_trunc_lock_type {
+enum ccc_setattr_lock_type {
/** Locking is done by server */
- TRUNC_NOLOCK,
+ SETATTR_NOLOCK,
/** Extent lock is enqueued */
- TRUNC_EXTENT,
+ SETATTR_EXTENT_LOCK,
/** Existing local extent lock is used */
- TRUNC_MATCH
+ SETATTR_MATCH_LOCK
};
+
/**
* IO state private to vvp or slp layers.
*/
union {
struct {
- int cui_locks_released;
- enum ccc_trunc_lock_type cui_local_lock;
- } trunc;
- } u;
- /**
- * True iff io is processing glimpse right now.
- */
- int cui_glimpse;
+ enum ccc_setattr_lock_type cui_local_lock;
+ } setattr;
+ struct {
+ struct cl_page_list cui_queue;
+ unsigned long cui_written;
+ int cui_from;
+ int cui_to;
+ } write;
+ } u;
+ /**
+ * True iff io is processing glimpse right now.
+ */
+ int cui_glimpse;
+ /**
+ * Layout version when this IO is initialized
+ */
+ __u32 cui_layout_gen;
/**
* File descriptor against which IO is done.
*/
struct ll_file_data *cui_fd;
-#ifndef HAVE_FILE_WRITEV
struct kiocb *cui_iocb;
-#endif
};
+/**
+ * True, if \a io is a normal io, False for other splice_{read,write}.
+ * must be impementated in arch specific code.
+ */
+int cl_is_normalio(const struct lu_env *env, const struct cl_io *io);
+
extern struct lu_context_key ccc_key;
extern struct lu_context_key ccc_session_key;
struct ccc_thread_info {
struct cl_lock_descr cti_descr;
struct cl_io cti_io;
- struct cl_sync_io cti_sync_io;
struct cl_attr cti_attr;
};
return attr;
}
+static inline struct cl_io *ccc_env_thread_io(const struct lu_env *env)
+{
+ struct cl_io *io = &ccc_env_info(env)->cti_io;
+ memset(io, 0, sizeof(*io));
+ return io;
+}
+
struct ccc_session {
struct ccc_io cs_ios;
};
*
* \see ccc_page::cpg_pending_linkage
*/
- struct list_head cob_pending_list;
+ struct list_head cob_pending_list;
/**
* Access this counter is protected by inode->i_sem. Now that
* we don't need to hold any lock..
*/
int cob_transient_pages;
- /**
- * Number of outstanding mmaps on this file.
- *
- * \see ll_vm_open(), ll_vm_close().
- */
- atomic_t cob_mmap_cnt;
+ /**
+ * Number of outstanding mmaps on this file.
+ *
+ * \see ll_vm_open(), ll_vm_close().
+ */
+ atomic_t cob_mmap_cnt;
+
+ /**
+ * various flags
+ * cob_discard_page_warned
+ * if pages belonging to this object are discarded when a client
+ * is evicted, some debug info will be printed, this flag will be set
+ * during processing the first discarded page, then avoid flooding
+ * debug message for lots of discarded pages.
+ *
+ * \see ll_dirty_page_discard_warn.
+ */
+ unsigned int cob_discard_page_warned:1;
};
/**
* ccc-private page state.
*/
struct ccc_page {
- struct cl_page_slice cpg_cl;
- int cpg_defer_uptodate;
- int cpg_ra_used;
- int cpg_write_queued;
- /**
- * Non-empty iff this page is already counted in
- * ccc_object::cob_pending_list. Protected by
- * ccc_object::cob_pending_guard. This list is only used as a flag,
- * that is, never iterated through, only checked for list_empty(), but
- * having a list is useful for debugging.
- */
- struct list_head cpg_pending_linkage;
- /** VM page */
- cfs_page_t *cpg_page;
- struct cl_sync_io *cpg_sync_io;
- /**
- * checksum for paranoid I/O debugging enabled by
- * ENABLE_LLITE_CHECKSUM configuration option.
- *
- * XXX This cannot be implemented reliably because checksum cannot be
- * updated from ->set_page_dirty() that is called without page VM
- * lock.
- */
- __u32 cpg_checksum;
+ struct cl_page_slice cpg_cl;
+ unsigned cpg_defer_uptodate:1,
+ cpg_ra_used:1,
+ cpg_write_queued:1;
+ /**
+ * Non-empty iff this page is already counted in
+ * ccc_object::cob_pending_list. Protected by
+ * ccc_object::cob_pending_guard. This list is only used as a flag,
+ * that is, never iterated through, only checked for list_empty(), but
+ * having a list is useful for debugging.
+ */
+ struct list_head cpg_pending_linkage;
+ /** VM page */
+ struct page *cpg_page;
};
static inline struct ccc_page *cl2ccc_page(const struct cl_page_slice *slice)
return container_of(slice, struct ccc_page, cpg_cl);
}
-struct cl_page *ccc_vmpage_page_transient(cfs_page_t *vmpage);
+static inline pgoff_t ccc_index(struct ccc_page *ccc)
+{
+ return ccc->cpg_cl.cpl_index;
+}
+
+struct cl_page *ccc_vmpage_page_transient(struct page *vmpage);
struct ccc_device {
struct cl_device cdv_cl;
const struct cl_object *obj, struct ost_lvb *lvb);
int ccc_conf_set(const struct lu_env *env, struct cl_object *obj,
const struct cl_object_conf *conf);
-cfs_page_t *ccc_page_vmpage(const struct lu_env *env,
- const struct cl_page_slice *slice);
-int ccc_page_is_under_lock(const struct lu_env *env,
- const struct cl_page_slice *slice, struct cl_io *io);
int ccc_fail(const struct lu_env *env, const struct cl_page_slice *slice);
void ccc_transient_page_verify(const struct cl_page *page);
-void ccc_transient_page_own(const struct lu_env *env,
+int ccc_transient_page_own(const struct lu_env *env,
const struct cl_page_slice *slice,
- struct cl_io *io);
+ struct cl_io *io, int nonblock);
void ccc_transient_page_assume(const struct lu_env *env,
const struct cl_page_slice *slice,
struct cl_io *io);
void ccc_lock_fini(const struct lu_env *env,struct cl_lock_slice *slice);
int ccc_lock_enqueue(const struct lu_env *env,const struct cl_lock_slice *slice,
struct cl_io *io, __u32 enqflags);
+int ccc_lock_use(const struct lu_env *env,const struct cl_lock_slice *slice);
int ccc_lock_unuse(const struct lu_env *env,const struct cl_lock_slice *slice);
int ccc_lock_wait(const struct lu_env *env,const struct cl_lock_slice *slice);
int ccc_lock_fits_into(const struct lu_env *env,
void ccc_io_update_iov(const struct lu_env *env, struct ccc_io *cio,
struct cl_io *io);
int ccc_prep_size(const struct lu_env *env, struct cl_object *obj,
- struct cl_io *io, loff_t start, size_t count, int vfslock,
- int *exceed);
+ struct cl_io *io, loff_t start, size_t count, int *exceed);
void ccc_req_completion(const struct lu_env *env,
const struct cl_req_slice *slice, int ioret);
void ccc_req_attr_set(const struct lu_env *env,const struct cl_req_slice *slice,
struct ccc_io *cl2ccc_io (const struct lu_env *env,
const struct cl_io_slice *slice);
struct ccc_req *cl2ccc_req (const struct cl_req_slice *slice);
-cfs_page_t *cl2vm_page (const struct cl_page_slice *slice);
+struct page *cl2vm_page (const struct cl_page_slice *slice);
struct inode *ccc_object_inode(const struct cl_object *obj);
struct ccc_object *cl_inode2ccc (struct inode *inode);
-int cl_setattr_do_truncate(struct inode *inode, loff_t size,
- struct obd_capa *capa);
-int cl_setattr_ost(struct inode *inode, struct obd_capa *capa);
+int cl_setattr_ost(struct inode *inode, const struct iattr *attr,
+ struct obd_capa *capa);
-struct cl_page *ccc_vmpage_page_transient(cfs_page_t *vmpage);
+struct cl_page *ccc_vmpage_page_transient(struct page *vmpage);
int ccc_object_invariant(const struct cl_object *obj);
-int cl_inode_init(struct inode *inode, struct lustre_md *md);
+int cl_file_inode_init(struct inode *inode, struct lustre_md *md);
void cl_inode_fini(struct inode *inode);
int cl_local_size(struct inode *inode);
__u16 ll_dirent_type_get(struct lu_dirent *ent);
+__u64 cl_fid_build_ino(const struct lu_fid *fid, int api32);
+__u32 cl_fid_build_gen(const struct lu_fid *fid);
-#ifdef INVARIANT_CHECK
+#ifdef CONFIG_LUSTRE_DEBUG_EXPENSIVE_CHECK
# define CLOBINVRNT(env, clob, expr) \
do { \
if (unlikely(!(expr))) { \
LINVRNT(0); \
} \
} while (0)
-#else /* !INVARIANT_CHECK */
+#else /* !CONFIG_LUSTRE_DEBUG_EXPENSIVE_CHECK */
# define CLOBINVRNT(env, clob, expr) \
- ((void)sizeof(env), (void)sizeof(clob), (void)sizeof !!(expr))
-#endif /* !INVARIANT_CHECK */
+ ((void)sizeof(env), (void)sizeof(clob), (void)sizeof !!(expr))
+#endif /* !CONFIG_LUSTRE_DEBUG_EXPENSIVE_CHECK */
int cl_init_ea_size(struct obd_export *md_exp, struct obd_export *dt_exp);
int cl_ocd_update(struct obd_device *host,
struct obd_device *watched,
- enum obd_notify_event ev, void *owner);
+ enum obd_notify_event ev, void *owner, void *data);
struct ccc_grouplock {
struct lu_env *cg_env;
+ struct cl_io *cg_io;
struct cl_lock *cg_lock;
unsigned long cg_gid;
};
struct ccc_grouplock *cg);
void cl_put_grouplock(struct ccc_grouplock *cg);
+/**
+ * New interfaces to get and put lov_stripe_md from lov layer. This violates
+ * layering because lov_stripe_md is supposed to be a private data in lov.
+ *
+ * NB: If you find you have to use these interfaces for your new code, please
+ * think about it again. These interfaces may be removed in the future for
+ * better layering. */
+struct lov_stripe_md *lov_lsm_get(struct cl_object *clobj);
+void lov_lsm_put(struct cl_object *clobj, struct lov_stripe_md *lsm);
+int lov_read_and_clear_async_rc(struct cl_object *clob);
+
+struct lov_stripe_md *ccc_inode_lsm_get(struct inode *inode);
+void ccc_inode_lsm_put(struct inode *inode, struct lov_stripe_md *lsm);
+
+/**
+ * Data structure managing a client's cached pages. A count of
+ * "unstable" pages is maintained, and an LRU of clean pages is
+ * maintained. "unstable" pages are pages pinned by the ptlrpc
+ * layer for recovery purposes.
+ */
+struct cl_client_cache {
+ /**
+ * # of users (OSCs)
+ */
+ atomic_t ccc_users;
+ /**
+ * # of LRU entries available
+ */
+ atomic_t ccc_lru_left;
+ /**
+ * List of entities(OSCs) for this LRU cache
+ */
+ struct list_head ccc_lru;
+ /**
+ * Max # of LRU entries
+ */
+ unsigned long ccc_lru_max;
+ /**
+ * Lock to protect ccc_lru list
+ */
+ spinlock_t ccc_lru_lock;
+ /**
+ * # of threads are doing shrinking
+ */
+ unsigned int ccc_lru_shrinkers;
+ /**
+ * Set if unstable check is enabled
+ */
+ unsigned int ccc_unstable_check:1;
+ /**
+ * Waitq for awaiting unstable pages to reach zero.
+ * Used at umounting time and signaled on BRW commit
+ */
+ wait_queue_head_t ccc_unstable_waitq;
+ /**
+ * # of unstable pages for this mount point
+ */
+ atomic_t ccc_unstable_nr;
+};
+
+enum {
+ LUSTRE_OPC_MKDIR = 0,
+ LUSTRE_OPC_SYMLINK = 1,
+ LUSTRE_OPC_MKNOD = 2,
+ LUSTRE_OPC_CREATE = 3,
+ LUSTRE_OPC_ANY = 5
+};
+
+enum op_cli_flags {
+ CLI_SET_MEA = 1 << 0,
+ CLI_RM_ENTRY = 1 << 1,
+ CLI_HASH64 = 1 << 2,
+ CLI_API32 = 1 << 3,
+ CLI_MIGRATE = 1 << 4,
+};
+
#endif /*LCLIENT_H */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff