* Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2011, 2016, Intel Corporation.
+ * Copyright (c) 2011, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
/*
* super-class definitions.
*/
+#include <linux/aio.h>
+#include <linux/fs.h>
+
#include <libcfs/libcfs.h>
#include <lu_object.h>
#include <linux/atomic.h>
#include <linux/radix-tree.h>
#include <linux/spinlock.h>
#include <linux/wait.h>
+#include <linux/pagevec.h>
#include <lustre_dlm.h>
struct obd_info;
/* nlink of the directory */
__u64 cat_nlink;
+
+ /* Project identifier for quota purpose. */
+ __u32 cat_projid;
};
/**
* Fields in cl_attr that are being set.
*/
enum cl_attr_valid {
- CAT_SIZE = 1 << 0,
- CAT_KMS = 1 << 1,
- CAT_MTIME = 1 << 3,
- CAT_ATIME = 1 << 4,
- CAT_CTIME = 1 << 5,
- CAT_BLOCKS = 1 << 6,
- CAT_UID = 1 << 7,
- CAT_GID = 1 << 8
+ CAT_SIZE = 1 << 0,
+ CAT_KMS = 1 << 1,
+ CAT_MTIME = 1 << 3,
+ CAT_ATIME = 1 << 4,
+ CAT_CTIME = 1 << 5,
+ CAT_BLOCKS = 1 << 6,
+ CAT_UID = 1 << 7,
+ CAT_GID = 1 << 8,
+ CAT_PROJID = 1 << 9
};
/**
struct lu_buf cl_buf;
/** size of layout in lov_mds_md format. */
size_t cl_size;
+ /** size of DoM component if exists or zero otherwise */
+ u64 cl_dom_comp_size;
/** Layout generation. */
u32 cl_layout_gen;
+ /** whether layout is a composite one */
+ bool cl_is_composite;
+ /** Whether layout is a HSM released one */
+ bool cl_is_released;
};
/**
* Object getstripe method.
*/
int (*coo_getstripe)(const struct lu_env *env, struct cl_object *obj,
- struct lov_user_md __user *lum);
+ struct lov_user_md __user *lum, size_t size);
/**
* Get FIEMAP mapping from the object.
*/
void (*coo_req_attr_set)(const struct lu_env *env,
struct cl_object *obj,
struct cl_req_attr *attr);
+ /**
+ * Flush \a obj data corresponding to \a lock. Used for DoM
+ * locks in llite's cancelling blocking ast callback.
+ */
+ int (*coo_object_flush)(const struct lu_env *env,
+ struct cl_object *obj,
+ struct ldlm_lock *lock);
};
/**
/** Transient page, the transient cl_page is used to bind a cl_page
* to vmpage which is not belonging to the same object of cl_page.
- * it is used in DirectIO, lockless IO and liblustre. */
+ * it is used in DirectIO and lockless IO. */
CPT_TRANSIENT,
};
*/
int (*cpo_is_vmlocked)(const struct lu_env *env,
const struct cl_page_slice *slice);
+
+ /**
+ * Update file attributes when all we have is this page. Used for tiny
+ * writes to update attributes when we don't have a full cl_io.
+ */
+ void (*cpo_page_touch)(const struct lu_env *env,
+ const struct cl_page_slice *slice, size_t to);
/**
* Page destruction.
*/
const struct cl_page_slice *slice);
/** Destructor. Frees resources and slice itself. */
void (*cpo_fini)(const struct lu_env *env,
- struct cl_page_slice *slice);
+ struct cl_page_slice *slice,
+ struct pagevec *pvec);
/**
* Optional debugging helper. Prints given page slice.
*
* (struct cl_lock) and a list of layers (struct cl_lock_slice), linked to
* cl_lock::cll_layers list through cl_lock_slice::cls_linkage.
*
- * Typical cl_lock consists of the two layers:
+ * Typical cl_lock consists of one layer:
*
- * - vvp_lock (vvp specific data), and
* - lov_lock (lov specific data).
*
* lov_lock contains an array of sub-locks. Each of these sub-locks is a
* normal cl_lock: it has a header (struct cl_lock) and a list of layers:
*
- * - lovsub_lock, and
* - osc_lock
*
* Each sub-lock is associated with a cl_object (representing stripe
/**
* Per-layer part of cl_lock
*
- * \see vvp_lock, lov_lock, lovsub_lock, osc_lock
+ * \see lov_lock, osc_lock
*/
struct cl_lock_slice {
struct cl_lock *cls_lock;
/**
*
- * \see vvp_lock_ops, lov_lock_ops, lovsub_lock_ops, osc_lock_ops
+ * \see lov_lock_ops, osc_lock_ops
*/
struct cl_lock_operations {
/** @{ */
* @anchor for resources
* \retval -ve failure
*
- * \see vvp_lock_enqueue(), lov_lock_enqueue(), lovsub_lock_enqueue(),
- * \see osc_lock_enqueue()
+ * \see lov_lock_enqueue(), osc_lock_enqueue()
*/
int (*clo_enqueue)(const struct lu_env *env,
const struct cl_lock_slice *slice,
/**
* Destructor. Frees resources and the slice.
*
- * \see vvp_lock_fini(), lov_lock_fini(), lovsub_lock_fini(),
- * \see osc_lock_fini()
+ * \see lov_lock_fini(), osc_lock_fini()
*/
void (*clo_fini)(const struct lu_env *env, struct cl_lock_slice *slice);
/**
struct task_struct *pl_owner;
};
-/**
+/**
* A 2-queue of pages. A convenience data-type for common use case, 2-queue
* contains an incoming page list and an outgoing page list.
*/
*/
CIT_FSYNC,
/**
+ * glimpse. An io context to acquire glimpse lock.
+ */
+ CIT_GLIMPSE,
+ /**
* Miscellaneous io. This is used for occasional io activity that
* doesn't fit into other types. Currently this is used for:
*
* - VM induced page write-out. An io context for writing page out
* for memory cleansing;
*
- * - glimpse. An io context to acquire glimpse lock.
- *
* - grouplock. An io context to acquire group lock.
*
* CIT_MISC io is used simply as a context in which locks and pages
* -EWOULDBLOCK is returned immediately.
*/
CEF_NONBLOCK = 0x00000001,
- /**
- * take lock asynchronously (out of order), as it cannot
- * deadlock. This is for LDLM_FL_HAS_INTENT locks used for glimpsing.
- */
- CEF_ASYNC = 0x00000002,
+ /**
+ * Tell lower layers this is a glimpse request, translated to
+ * LDLM_FL_HAS_INTENT at LDLM layer.
+ *
+ * Also, because glimpse locks never block other locks, we count this
+ * as automatically compatible with other osc locks.
+ * (see osc_lock_compatible)
+ */
+ CEF_GLIMPSE = 0x00000002,
/**
* tell the server to instruct (though a flag in the blocking ast) an
* owner of the conflicting lock, that it can drop dirty pages
* protected by this lock, without sending them to the server.
*/
CEF_DISCARD_DATA = 0x00000004,
- /**
- * tell the sub layers that it must be a `real' lock. This is used for
- * mmapped-buffer locks and glimpse locks that must be never converted
- * into lockless mode.
- *
- * \see vvp_mmap_locks(), cl_glimpse_lock().
- */
- CEF_MUST = 0x00000008,
+ /**
+ * tell the sub layers that it must be a `real' lock. This is used for
+ * mmapped-buffer locks, glimpse locks, manually requested locks
+ * (LU_LADVISE_LOCKAHEAD) that must never be converted into lockless
+ * mode.
+ *
+ * \see vvp_mmap_locks(), cl_glimpse_lock, cl_request_lock().
+ */
+ CEF_MUST = 0x00000008,
/**
* tell the sub layers that never request a `real' lock. This flag is
* not used currently.
*/
CEF_NEVER = 0x00000010,
/**
- * for async glimpse lock.
+ * tell the dlm layer this is a speculative lock request
+ * speculative lock requests are locks which are not requested as part
+ * of an I/O operation. Instead, they are requested because we expect
+ * to use them in the future. They are requested asynchronously at the
+ * ptlrpc layer.
+ *
+ * Currently used for asynchronous glimpse locks and manually requested
+ * locks (LU_LADVISE_LOCKAHEAD).
*/
- CEF_AGL = 0x00000020,
+ CEF_SPECULATIVE = 0x00000020,
/**
* enqueue a lock to test DLM lock existence.
*/
*/
CEF_LOCK_MATCH = 0x00000080,
/**
+ * tell the DLM layer to lock only the requested range
+ */
+ CEF_LOCK_NO_EXPAND = 0x00000100,
+ /**
* mask of enq_flags.
*/
- CEF_MASK = 0x000000ff,
+ CEF_MASK = 0x000001ff,
};
/**
};
struct cl_io_rw_common {
- loff_t crw_pos;
- size_t crw_count;
- int crw_nonblock;
+ loff_t crw_pos;
+ size_t crw_count;
+ int crw_nonblock;
};
/**
struct cl_lockset ci_lockset;
/** lock requirements, this is just a help info for sublayers. */
enum cl_io_lock_dmd ci_lockreq;
- union {
- struct cl_rd_io {
- struct cl_io_rw_common rd;
- } ci_rd;
+ /** layout version when this IO occurs */
+ __u32 ci_layout_version;
+ union {
+ struct cl_rd_io {
+ struct cl_io_rw_common rd;
+ } ci_rd;
struct cl_wr_io {
struct cl_io_rw_common wr;
int wr_append;
struct cl_setattr_io {
struct ost_lvb sa_attr;
unsigned int sa_attr_flags;
- unsigned int sa_valid;
+ unsigned int sa_avalid; /* ATTR_* */
+ unsigned int sa_xvalid; /* OP_XVALID */
int sa_stripe_index;
struct ost_layout sa_layout;
const struct lu_fid *sa_parent_fid;
} ci_setattr;
struct cl_data_version_io {
u64 dv_data_version;
+ u32 dv_layout_version;
int dv_flags;
} ci_data_version;
struct cl_fault_io {
*/
ci_ignore_layout:1,
/**
- * Need MDS intervention to complete a write. This usually means the
- * corresponding component is not initialized for the writing extent.
+ * Need MDS intervention to complete a write.
+ * Write intent is required for the following cases:
+ * 1. component being written is not initialized, or
+ * 2. the mirrored files are NOT in WRITE_PENDING state.
*/
ci_need_write_intent:1,
/**
/**
* O_NOATIME
*/
- ci_noatime:1;
+ ci_noatime:1,
+ /* Tell sublayers not to expand LDLM locks requested for this IO */
+ ci_lock_no_expand:1,
+ /**
+ * Set if non-delay RPC should be used for this IO.
+ *
+ * If this file has multiple mirrors, and if the OSTs of the current
+ * mirror is inaccessible, non-delay RPC would error out quickly so
+ * that the upper layer can try to access the next mirror.
+ */
+ ci_ndelay:1,
+ /**
+ * Set if IO is triggered by async workqueue readahead.
+ */
+ ci_async_readahead:1;
+ /**
+ * How many times the read has retried before this one.
+ * Set by the top level and consumed by the LOV.
+ */
+ unsigned ci_ndelay_tried;
+ /**
+ * Designated mirror index for this I/O.
+ */
+ unsigned ci_designated_mirror;
/**
* Number of pages owned by this IO. For invariant checking.
*/
unsigned ci_owned_nr;
+ /**
+ * Range of write intent. Valid if ci_need_write_intent is set.
+ */
+ struct lu_extent ci_write_intent;
};
/** @} cl_io */
int cl_object_prune (const struct lu_env *env, struct cl_object *obj);
void cl_object_kill (const struct lu_env *env, struct cl_object *obj);
int cl_object_getstripe(const struct lu_env *env, struct cl_object *obj,
- struct lov_user_md __user *lum);
+ struct lov_user_md __user *lum, size_t size);
int cl_object_fiemap(const struct lu_env *env, struct cl_object *obj,
struct ll_fiemap_info_key *fmkey, struct fiemap *fiemap,
size_t *buflen);
int cl_object_layout_get(const struct lu_env *env, struct cl_object *obj,
struct cl_layout *cl);
loff_t cl_object_maxbytes(struct cl_object *obj);
+int cl_object_flush(const struct lu_env *env, struct cl_object *obj,
+ struct ldlm_lock *lock);
+
/**
* Returns true, iff \a o0 and \a o1 are slices of the same object.
void cl_page_get (struct cl_page *page);
void cl_page_put (const struct lu_env *env,
struct cl_page *page);
+void cl_pagevec_put (const struct lu_env *env,
+ struct cl_page *page,
+ struct pagevec *pvec);
void cl_page_print (const struct lu_env *env, void *cookie,
lu_printer_t printer,
const struct cl_page *pg);
void cl_page_delete(const struct lu_env *env, struct cl_page *pg);
int cl_page_is_vmlocked(const struct lu_env *env,
const struct cl_page *pg);
+void cl_page_touch(const struct lu_env *env, const struct cl_page *pg,
+ size_t to);
void cl_page_export(const struct lu_env *env,
struct cl_page *pg, int uptodate);
loff_t cl_offset(const struct cl_object *obj, pgoff_t idx);
*/
static inline int cl_io_is_append(const struct cl_io *io)
{
- return io->ci_type == CIT_WRITE && io->u.ci_wr.wr_append;
+ return io->ci_type == CIT_WRITE && io->u.ci_wr.wr_append;
}
static inline int cl_io_is_sync_write(const struct cl_io *io)
*/
static inline int cl_io_is_trunc(const struct cl_io *io)
{
- return io->ci_type == CIT_SETATTR &&
- (io->u.ci_setattr.sa_valid & ATTR_SIZE);
+ return io->ci_type == CIT_SETATTR &&
+ (io->u.ci_setattr.sa_avalid & ATTR_SIZE);
}
struct cl_io *cl_io_top(struct cl_io *io);
void cl_io_print(const struct lu_env *env, void *cookie,
lu_printer_t printer, const struct cl_io *io);
-#define CL_IO_SLICE_CLEAN(foo_io, base) \
-do { \
- typeof(foo_io) __foo_io = (foo_io); \
- \
- CLASSERT(offsetof(typeof(*__foo_io), base) == 0); \
- memset(&__foo_io->base + 1, 0, \
- (sizeof *__foo_io) - sizeof __foo_io->base); \
+#define CL_IO_SLICE_CLEAN(foo_io, base) \
+do { \
+ typeof(foo_io) __foo_io = (foo_io); \
+ \
+ memset(&__foo_io->base, 0, \
+ sizeof(*__foo_io) - offsetof(typeof(*__foo_io), base)); \
} while (0)
/** @} cl_io */
atomic_t csi_sync_nr;
/** error code. */
int csi_sync_rc;
- /** barrier of destroy this structure */
- atomic_t csi_barrier;
/** completion to be signaled when transfer is complete. */
wait_queue_head_t csi_waitq;
/** callback to invoke when this IO is finished */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff