*/
/*
* This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
*/
#ifndef LLITE_INTERNAL_H
#define LLITE_INTERNAL_H
-#include <lustre_debug.h>
+#include <obd.h>
#include <lustre_disk.h> /* for s2sbi */
-#include <lustre_eacl.h>
#include <lustre_linkea.h>
/* for struct cl_lock_descr and struct cl_io */
#include <linux/compat.h>
#include <linux/aio.h>
#include <lustre_compat.h>
+#include <lustre_crypto.h>
+#include <range_lock.h>
#include "vvp_internal.h"
-#include "range_lock.h"
+#include "pcc.h"
+#include "foreign_symlink.h"
#ifndef FMODE_EXEC
#define FMODE_EXEC 0
#endif
-#ifndef VM_FAULT_RETRY
+#ifndef HAVE_VM_FAULT_RETRY
#define VM_FAULT_RETRY 0
#endif
#define LL_MAX_BLKSIZE_BITS 22
#define LL_IT2STR(it) ((it) ? ldlm_it2str((it)->it_op) : "0")
-#define LUSTRE_FPRIVATE(file) ((file)->private_data)
+
+#define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET | ATTR_TIMES_SET)
struct ll_dentry_data {
- struct lookup_intent *lld_it;
unsigned int lld_sa_generation;
unsigned int lld_invalid:1;
unsigned int lld_nfs_dentry:1;
unsigned long lg_gid;
};
+/* See comment on trunc_sem_down_read_nowait */
+struct ll_trunc_sem {
+ /* when positive, this is a count of readers, when -1, it indicates
+ * the semaphore is held for write, and 0 is unlocked
+ */
+ atomic_t ll_trunc_readers;
+ /* this tracks a count of waiting writers */
+ atomic_t ll_trunc_waiters;
+};
+
struct ll_inode_info {
__u32 lli_inode_magic;
spinlock_t lli_lock;
__u64 lli_open_fd_read_count;
__u64 lli_open_fd_write_count;
__u64 lli_open_fd_exec_count;
+
+ /* Number of times this inode was opened */
+ u64 lli_open_fd_count;
+ /* When last close was performed on this inode */
+ ktime_t lli_close_fd_time;
+
/* Protects access to och pointers and their usage counters */
struct mutex lli_och_mutex;
s64 lli_atime;
s64 lli_mtime;
s64 lli_ctime;
+ s64 lli_btime;
spinlock_t lli_agl_lock;
- /* update atime from MDS no matter if it's older than
- * local inode atime. */
- unsigned int lli_update_atime:1;
-
/* 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. */
- struct mutex lli_readdir_mutex;
-
/* metadata statahead */
/* since parent-child threads can share the same @file
* struct, "opendir_key" is the token when dir close for
struct {
struct mutex lli_size_mutex;
char *lli_symlink_name;
- /*
- * struct rw_semaphore {
- * signed long count; // align d.d_def_acl
- * spinlock_t wait_lock; // align d.d_sa_lock
- * struct list_head wait_list;
- * }
- */
- struct rw_semaphore lli_trunc_sem;
+ struct ll_trunc_sem lli_trunc_sem;
struct range_lock_tree lli_write_tree;
+ struct mutex lli_setattr_mutex;
struct rw_semaphore lli_glimpse_sem;
ktime_t lli_glimpse_time;
* accurate if the file is shared by different jobs.
*/
char lli_jobid[LUSTRE_JOBID_SIZE];
+
+ struct mutex lli_pcc_lock;
+ enum lu_pcc_state_flags lli_pcc_state;
+ /*
+ * @lli_pcc_generation saves the gobal PCC generation
+ * when the file was successfully attached into PCC.
+ * The flags of the PCC dataset are saved in
+ * @lli_pcc_dsflags.
+ * The gobal PCC generation will be increased when add
+ * or delete a PCC backend, or change the configuration
+ * parameters for PCC.
+ * If @lli_pcc_generation is same as the gobal PCC
+ * generation, we can use the saved flags of the PCC
+ * dataset to determine whether need to try auto attach
+ * safely.
+ */
+ __u64 lli_pcc_generation;
+ enum pcc_dataset_flags lli_pcc_dsflags;
+ struct pcc_inode *lli_pcc_inode;
+
+ struct mutex lli_group_mutex;
+ __u64 lli_group_users;
+ unsigned long lli_group_gid;
+
+ __u64 lli_attr_valid;
+ __u64 lli_lazysize;
+ __u64 lli_lazyblocks;
};
};
- /* 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.
- */
+ /* 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.
+ */
struct cl_object *lli_clob;
/* mutex to request for layout lock exclusively. */
struct list_head lli_xattrs; /* ll_xattr_entry->xe_list */
};
+static inline void ll_trunc_sem_init(struct ll_trunc_sem *sem)
+{
+ atomic_set(&sem->ll_trunc_readers, 0);
+ atomic_set(&sem->ll_trunc_waiters, 0);
+}
+
+/* This version of down read ignores waiting writers, meaning if the semaphore
+ * is already held for read, this down_read will 'join' that reader and also
+ * take the semaphore.
+ *
+ * This lets us avoid an unusual deadlock.
+ *
+ * We must take lli_trunc_sem in read mode on entry in to various i/o paths
+ * in Lustre, in order to exclude truncates. Some of these paths then need to
+ * take the mmap_lock, while still holding the trunc_sem. The problem is that
+ * page faults hold the mmap_lock when calling in to Lustre, and then must also
+ * take the trunc_sem to exclude truncate.
+ *
+ * This means the locking order for trunc_sem and mmap_lock is sometimes AB,
+ * sometimes BA. This is almost OK because in both cases, we take the trunc
+ * sem for read, so it doesn't block.
+ *
+ * However, if a write mode user (truncate, a setattr op) arrives in the
+ * middle of this, the second reader on the truncate_sem will wait behind that
+ * writer.
+ *
+ * So we have, on our truncate sem, in order (where 'reader' and 'writer' refer
+ * to the mode in which they take the semaphore):
+ * reader (holding mmap_lock, needs truncate_sem)
+ * writer
+ * reader (holding truncate sem, waiting for mmap_lock)
+ *
+ * And so the readers deadlock.
+ *
+ * The solution is this modified semaphore, where this down_read ignores
+ * waiting write operations, and all waiters are woken up at once, so readers
+ * using down_read_nowait cannot get stuck behind waiting writers, regardless
+ * of the order they arrived in.
+ *
+ * down_read_nowait is only used in the page fault case, where we already hold
+ * the mmap_lock. This is because otherwise repeated read and write operations
+ * (which take the truncate sem) could prevent a truncate from ever starting.
+ * This could still happen with page faults, but without an even more complex
+ * mechanism, this is unavoidable.
+ *
+ * LU-12460
+ */
+static inline void trunc_sem_down_read_nowait(struct ll_trunc_sem *sem)
+{
+ wait_var_event(&sem->ll_trunc_readers,
+ atomic_inc_unless_negative(&sem->ll_trunc_readers));
+}
+
+static inline void trunc_sem_down_read(struct ll_trunc_sem *sem)
+{
+ wait_var_event(&sem->ll_trunc_readers,
+ atomic_read(&sem->ll_trunc_waiters) == 0 &&
+ atomic_inc_unless_negative(&sem->ll_trunc_readers));
+}
+
+static inline void trunc_sem_up_read(struct ll_trunc_sem *sem)
+{
+ if (atomic_dec_return(&sem->ll_trunc_readers) == 0 &&
+ atomic_read(&sem->ll_trunc_waiters))
+ wake_up_var(&sem->ll_trunc_readers);
+}
+
+static inline void trunc_sem_down_write(struct ll_trunc_sem *sem)
+{
+ atomic_inc(&sem->ll_trunc_waiters);
+ wait_var_event(&sem->ll_trunc_readers,
+ atomic_cmpxchg(&sem->ll_trunc_readers, 0, -1) == 0);
+ atomic_dec(&sem->ll_trunc_waiters);
+}
+
+static inline void trunc_sem_up_write(struct ll_trunc_sem *sem)
+{
+ atomic_set(&sem->ll_trunc_readers, 0);
+ wake_up_var(&sem->ll_trunc_readers);
+}
+
+#ifdef CONFIG_LUSTRE_FS_POSIX_ACL
+static inline void lli_clear_acl(struct ll_inode_info *lli)
+{
+ if (lli->lli_posix_acl) {
+ posix_acl_release(lli->lli_posix_acl);
+ lli->lli_posix_acl = NULL;
+ }
+}
+
+static inline void lli_replace_acl(struct ll_inode_info *lli,
+ struct lustre_md *md)
+{
+ spin_lock(&lli->lli_lock);
+ if (lli->lli_posix_acl)
+ posix_acl_release(lli->lli_posix_acl);
+ lli->lli_posix_acl = md->posix_acl;
+ spin_unlock(&lli->lli_lock);
+}
+#else
+static inline void lli_clear_acl(struct ll_inode_info *lli)
+{
+}
+
+static inline void lli_replace_acl(struct ll_inode_info *lli,
+ struct lustre_md *md)
+{
+}
+#endif
+
static inline __u32 ll_layout_version_get(struct ll_inode_info *lli)
{
__u32 gen;
LLIF_XATTR_CACHE = 2,
/* Project inherit */
LLIF_PROJECT_INHERIT = 3,
-};
+ /* update atime from MDS even if it's older than local inode atime. */
+ LLIF_UPDATE_ATIME = 4,
+ /* foreign file/dir can be unlinked unconditionnaly */
+ LLIF_FOREIGN_REMOVABLE = 5,
+ /* setting encryption context in progress */
+ LLIF_SET_ENC_CTX = 6,
-static inline void ll_file_set_flag(struct ll_inode_info *lli,
- enum ll_file_flags flag)
-{
- set_bit(flag, &lli->lli_flags);
-}
-
-static inline void ll_file_clear_flag(struct ll_inode_info *lli,
- enum ll_file_flags flag)
-{
- clear_bit(flag, &lli->lli_flags);
-}
-
-static inline bool ll_file_test_flag(struct ll_inode_info *lli,
- enum ll_file_flags flag)
-{
- return test_bit(flag, &lli->lli_flags);
-}
-
-static inline bool ll_file_test_and_clear_flag(struct ll_inode_info *lli,
- enum ll_file_flags flag)
-{
- return test_and_clear_bit(flag, &lli->lli_flags);
-}
+};
int ll_xattr_cache_destroy(struct inode *inode);
int ll_xattr_cache_get(struct inode *inode,
- const char *name,
- char *buffer,
- size_t size,
- __u64 valid);
+ const char *name,
+ char *buffer,
+ size_t size,
+ __u64 valid);
+
+int ll_xattr_cache_insert(struct inode *inode,
+ const char *name,
+ char *buffer,
+ size_t size);
static inline bool obd_connect_has_secctx(struct obd_connect_data *data)
{
-#if defined(HAVE_SECURITY_DENTRY_INIT_SECURITY) && defined(CONFIG_SECURITY)
+#ifdef CONFIG_SECURITY
return data->ocd_connect_flags & OBD_CONNECT_FLAGS2 &&
- data->ocd_connect_flags2 & OBD_CONNECT2_FILE_SECCTX;
+ data->ocd_connect_flags2 & OBD_CONNECT2_FILE_SECCTX;
#else
return false;
-#endif /* HAVE_SECURITY_DENTRY_INIT_SECURITY */
+#endif
}
static inline void obd_connect_set_secctx(struct obd_connect_data *data)
{
-#if defined(HAVE_SECURITY_DENTRY_INIT_SECURITY) && defined(CONFIG_SECURITY)
+#ifdef CONFIG_SECURITY
data->ocd_connect_flags2 |= OBD_CONNECT2_FILE_SECCTX;
-#endif /* HAVE_SECURITY_DENTRY_INIT_SECURITY */
+#endif
}
int ll_dentry_init_security(struct dentry *dentry, int mode, struct qstr *name,
int ll_listsecurity(struct inode *inode, char *secctx_name,
size_t secctx_name_size);
+static inline bool obd_connect_has_enc(struct obd_connect_data *data)
+{
+#ifdef HAVE_LUSTRE_CRYPTO
+ return data->ocd_connect_flags & OBD_CONNECT_FLAGS2 &&
+ data->ocd_connect_flags2 & OBD_CONNECT2_ENCRYPT;
+#else
+ return false;
+#endif
+}
+
+static inline void obd_connect_set_enc(struct obd_connect_data *data)
+{
+#ifdef HAVE_LUSTRE_CRYPTO
+ data->ocd_connect_flags2 |= OBD_CONNECT2_ENCRYPT;
+#endif
+}
+
/*
* Locking to guarantee consistency of non-atomic updates to long long i_size,
* consistency between file size and KMS.
return container_of(inode, struct ll_inode_info, lli_vfs_inode);
}
-/* default to about 64M of readahead on a given system. */
-#define SBI_DEFAULT_READAHEAD_MAX MiB_TO_PAGES(64UL)
+static inline struct pcc_inode *ll_i2pcci(struct inode *inode)
+{
+ return ll_i2info(inode)->lli_pcc_inode;
+}
+
+/* default to use at least 16M for fast read if possible */
+#define RA_REMAIN_WINDOW_MIN MiB_TO_PAGES(16UL)
+
+/* default read-ahead on a given client mountpoint. */
+#define SBI_DEFAULT_READ_AHEAD_MAX MiB_TO_PAGES(1024UL)
+
+/* default read-ahead for a single file descriptor */
+#define SBI_DEFAULT_READ_AHEAD_PER_FILE_MAX MiB_TO_PAGES(256UL)
+
+/* default read-ahead full files smaller than limit on the second read */
+#define SBI_DEFAULT_READ_AHEAD_WHOLE_MAX MiB_TO_PAGES(2UL)
-/* default to read-ahead full files smaller than 2MB on the second read */
-#define SBI_DEFAULT_READAHEAD_WHOLE_MAX MiB_TO_PAGES(2UL)
+/* default range pages */
+#define SBI_DEFAULT_RA_RANGE_PAGES MiB_TO_PAGES(1ULL)
+
+/* Min range pages */
+#define RA_MIN_MMAP_RANGE_PAGES 16UL
enum ra_stat {
RA_STAT_HIT = 0,
RA_STAT_MAX_IN_FLIGHT,
RA_STAT_WRONG_GRAB_PAGE,
RA_STAT_FAILED_REACH_END,
+ RA_STAT_ASYNC,
+ RA_STAT_FAILED_FAST_READ,
+ RA_STAT_MMAP_RANGE_READ,
_NR_RA_STAT,
};
atomic_t ra_cur_pages;
unsigned long ra_max_pages;
unsigned long ra_max_pages_per_file;
+ unsigned long ra_range_pages;
unsigned long ra_max_read_ahead_whole_pages;
+ struct workqueue_struct *ll_readahead_wq;
+ /*
+ * Max number of active works could be triggered
+ * for async readahead.
+ */
+ unsigned int ra_async_max_active;
+ /* how many async readahead triggered in flight */
+ atomic_t ra_async_inflight;
+ /* Threshold to control when to trigger async readahead */
+ unsigned long ra_async_pages_per_file_threshold;
};
/* ra_io_arg will be filled in the beginning of ll_readahead with
* 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*/
- unsigned long ria_reserved; /* reserved pages for read-ahead */
- unsigned long ria_end_min; /* minimum end to cover current read */
- bool ria_eof; /* reach end of file */
- /* If stride read pattern is detected, ria_stoff means where
- * stride read is started. Note: for normal read-ahead, the
+ pgoff_t ria_start_idx; /* start offset of read-ahead*/
+ pgoff_t ria_end_idx; /* end offset of read-ahead*/
+ unsigned long ria_reserved; /* reserved pages for read-ahead */
+ pgoff_t ria_end_idx_min;/* minimum end to cover current read */
+ bool ria_eof; /* reach end of file */
+ /* If stride read pattern is detected, ria_stoff is the byte offset
+ * 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
+ loff_t ria_stoff;
+ /* ria_length and ria_bytes 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;
+ loff_t ria_length;
+ loff_t ria_bytes;
};
/* LL_HIST_MAX=32 causes an overflow */
2.10, abandoned */
#define LL_SBI_TINY_WRITE 0x2000000 /* tiny write support */
#define LL_SBI_FILE_HEAT 0x4000000 /* file heat support */
+#define LL_SBI_TEST_DUMMY_ENCRYPTION 0x8000000 /* test dummy encryption */
+#define LL_SBI_ENCRYPT 0x10000000 /* client side encryption */
+#define LL_SBI_FOREIGN_SYMLINK 0x20000000 /* foreign fake-symlink support */
+/* foreign fake-symlink upcall registered */
+#define LL_SBI_FOREIGN_SYMLINK_UPCALL 0x40000000
#define LL_SBI_FLAGS { \
"nolck", \
"checksum", \
"pio", \
"tiny_write", \
"file_heat", \
+ "test_dummy_encryption", \
+ "noencrypt", \
+ "foreign_symlink", \
+ "foreign_symlink_upcall", \
}
/* This is embedded into llite super-blocks to keep track of connect
struct dentry *ll_debugfs_entry;
struct lu_fid ll_root_fid; /* root object fid */
- int ll_flags;
- unsigned int ll_umounting:1,
- ll_xattr_cache_enabled:1,
+ int ll_flags;
+ unsigned int ll_xattr_cache_enabled:1,
ll_xattr_cache_set:1, /* already set to 0/1 */
ll_client_common_fill_super_succeeded:1,
ll_checksum_set:1;
- struct lustre_client_ocd ll_lco;
+ struct lustre_client_ocd ll_lco;
- struct lprocfs_stats *ll_stats; /* lprocfs stats counter */
+ struct lprocfs_stats *ll_stats; /* lprocfs stats counter */
/* Used to track "unstable" pages on a client, and maintain a
* LRU list of clean pages. An "unstable" page is defined as
* but is uncommitted to stable storage. */
struct cl_client_cache *ll_cache;
- struct lprocfs_stats *ll_ra_stats;
-
- struct ll_ra_info ll_ra_info;
- unsigned int ll_namelen;
- struct file_operations *ll_fop;
-
- 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;
- struct ll_rw_process_info ll_rw_process_info[LL_PROCESS_HIST_MAX];
- 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;
- int ll_stats_track_id;
- enum stats_track_type ll_stats_track_type;
- int ll_rw_stats_on;
+ struct lprocfs_stats *ll_ra_stats;
+
+ struct ll_ra_info ll_ra_info;
+ unsigned int ll_namelen;
+ const struct file_operations *ll_fop;
+
+ 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;
+ struct ll_rw_process_info ll_rw_process_info[LL_PROCESS_HIST_MAX];
+ 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;
+ 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_running_max;/* max concurrent
/* st_blksize returned by stat(2), when non-zero */
unsigned int ll_stat_blksize;
+ /* maximum relative age of cached statfs results */
+ unsigned int ll_statfs_max_age;
+
struct kset ll_kset; /* sysfs object */
struct completion ll_kobj_unregister;
unsigned int ll_heat_decay_weight;
unsigned int ll_heat_period_second;
+ /* Opens of the same inode before we start requesting open lock */
+ u32 ll_oc_thrsh_count;
+
+ /* Time in ms between last inode close and next open to be considered
+ * instant back to back and would trigger an open lock request
+ */
+ u32 ll_oc_thrsh_ms;
+
+ /* Time in ms after last file close that we no longer count prior opens*/
+ u32 ll_oc_max_ms;
+
/* filesystem fsname */
char ll_fsname[LUSTRE_MAXFSNAME + 1];
+
+ /* Persistent Client Cache */
+ struct pcc_super ll_pcc_super;
+
+ /* to protect vs updates in all following foreign symlink fields */
+ struct rw_semaphore ll_foreign_symlink_sem;
+ /* foreign symlink path prefix */
+ char *ll_foreign_symlink_prefix;
+ /* full prefix size including leading '\0' */
+ size_t ll_foreign_symlink_prefix_size;
+ /* foreign symlink path upcall */
+ char *ll_foreign_symlink_upcall;
+ /* foreign symlink path upcall infos */
+ struct ll_foreign_symlink_upcall_item *ll_foreign_symlink_upcall_items;
+ /* foreign symlink path upcall nb infos */
+ unsigned int ll_foreign_symlink_upcall_nb_items;
};
#define SBI_DEFAULT_HEAT_DECAY_WEIGHT ((80 * 256 + 50) / 100)
#define SBI_DEFAULT_HEAT_PERIOD_SECOND (60)
+
+#define SBI_DEFAULT_OPENCACHE_THRESHOLD_COUNT (5)
+#define SBI_DEFAULT_OPENCACHE_THRESHOLD_MS (100) /* 0.1 second */
+#define SBI_DEFAULT_OPENCACHE_THRESHOLD_MAX_MS (60000) /* 1 minute */
+
/*
* per file-descriptor read-ahead data.
*/
struct ll_readahead_state {
- spinlock_t ras_lock;
+ spinlock_t ras_lock;
+ /* End byte that read(2) try to read. */
+ loff_t ras_last_read_end_bytes;
/*
- * index of the last page that read(2) needed and that wasn't in the
- * cache. Used by ras_update() to detect seeks.
- *
- * XXX nikita: if access seeks into cached region, Lustre doesn't see
- * this.
- */
- unsigned long ras_last_readpage;
- /*
- * number of pages read after last read-ahead window reset. As window
+ * number of bytes read after last read-ahead window reset. As window
* is reset on each seek, this is effectively a number of consecutive
* accesses. Maybe ->ras_accessed_in_window is better name.
*
* case, it probably doesn't make sense to expand window to
* PTLRPC_MAX_BRW_PAGES on the third access.
*/
- unsigned long ras_consecutive_pages;
+ loff_t ras_consecutive_bytes;
/*
* number of read requests after the last read-ahead window reset
* As window is reset on each seek, this is effectively the number
* on consecutive read request and is used to trigger read-ahead.
*/
- unsigned long ras_consecutive_requests;
+ unsigned long ras_consecutive_requests;
/*
* Parameters of current read-ahead window. Handled by
* ras_update(). On the initial access to the file or after a seek,
* expanded to PTLRPC_MAX_BRW_PAGES. Afterwards, window is enlarged by
* PTLRPC_MAX_BRW_PAGES chunks up to ->ra_max_pages.
*/
- unsigned long ras_window_start, ras_window_len;
+ pgoff_t ras_window_start_idx;
+ pgoff_t ras_window_pages;
+
+ /* Page index where min range read starts */
+ pgoff_t ras_range_min_start_idx;
+ /* Page index where mmap range read ends */
+ pgoff_t ras_range_max_end_idx;
+ /* number of mmap pages where last time detected */
+ pgoff_t ras_last_range_pages;
+ /* number of mmap range requests */
+ pgoff_t ras_range_requests;
+
/*
- * Optimal RPC size. It decides how many pages will be sent
- * for each read-ahead.
+ * Optimal RPC size in pages.
+ * It decides how many pages will be sent for each read-ahead.
*/
- unsigned long ras_rpc_size;
+ unsigned long ras_rpc_pages;
/*
* Where next read-ahead should start at. This lies within read-ahead
* window. Read-ahead window is read in pieces rather than at once
* ->ra_max_pages (see ll_ra_count_get()), 2. client cannot read pages
* not covered by DLM lock.
*/
- unsigned long ras_next_readahead;
+ pgoff_t ras_next_readahead_idx;
/*
* Total number of ll_file_read requests issued, reads originating
* due to mmap are not counted in this total. This value is used to
* trigger full file read-ahead after multiple reads to a small file.
*/
- unsigned long ras_requests;
- /*
- * Page index with respect to the current request, these value
- * will not be accurate when dealing with reads issued via mmap.
- */
- unsigned long ras_request_index;
+ unsigned long ras_requests;
/*
* 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-|
+ * offset |-stride_bytes-|-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;
+ * ras_stride_length = stride_bytes + stride_gap;
+ * ras_stride_bytes = stride_bytes;
+ * Note: all these three items are counted by bytes.
+ */
+ loff_t ras_stride_offset;
+ loff_t ras_stride_length;
+ loff_t ras_stride_bytes;
/*
* 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;
+ /* index of the last page that async readahead starts */
+ pgoff_t ras_async_last_readpage_idx;
+ /* whether we should increase readahead window */
+ bool ras_need_increase_window;
+ /* whether ra miss check should be skipped */
+ bool ras_no_miss_check;
+};
+
+struct ll_readahead_work {
+ /** File to readahead */
+ struct file *lrw_file;
+ pgoff_t lrw_start_idx;
+ pgoff_t lrw_end_idx;
+
+ /* async worker to handler read */
+ struct work_struct lrw_readahead_work;
+ char lrw_jobid[LUSTRE_JOBID_SIZE];
};
extern struct kmem_cache *ll_file_data_slab;
/* The layout version when resync starts. Resync I/O should carry this
* layout version for verification to OST objects */
__u32 fd_layout_version;
+ struct pcc_file fd_pcc_file;
};
void llite_tunables_unregister(void);
return !!(sbi->ll_flags & LL_SBI_FILE_HEAT);
}
-void ll_ras_enter(struct file *f);
+static inline bool ll_sbi_has_foreign_symlink(struct ll_sb_info *sbi)
+{
+ return !!(sbi->ll_flags & LL_SBI_FOREIGN_SYMLINK);
+}
+
+void ll_ras_enter(struct file *f, loff_t pos, size_t count);
/* llite/lcommon_misc.c */
int cl_ocd_update(struct obd_device *host, struct obd_device *watched,
/* llite/lproc_llite.c */
int ll_debugfs_register_super(struct super_block *sb, const char *name);
void ll_debugfs_unregister_super(struct super_block *sb);
-void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, int count);
+void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, long count);
enum {
- LPROC_LL_DIRTY_HITS,
- LPROC_LL_DIRTY_MISSES,
LPROC_LL_READ_BYTES,
LPROC_LL_WRITE_BYTES,
- LPROC_LL_BRW_READ,
- LPROC_LL_BRW_WRITE,
+ LPROC_LL_READ,
+ LPROC_LL_WRITE,
LPROC_LL_IOCTL,
LPROC_LL_OPEN,
LPROC_LL_RELEASE,
- LPROC_LL_MAP,
+ LPROC_LL_MMAP,
LPROC_LL_FAULT,
LPROC_LL_MKWRITE,
LPROC_LL_LLSEEK,
LPROC_LL_RMDIR,
LPROC_LL_MKNOD,
LPROC_LL_RENAME,
- LPROC_LL_STAFS,
- LPROC_LL_ALLOC_INODE,
+ LPROC_LL_STATFS,
LPROC_LL_SETXATTR,
LPROC_LL_GETXATTR,
LPROC_LL_GETXATTR_HITS,
LPROC_LL_LISTXATTR,
LPROC_LL_REMOVEXATTR,
LPROC_LL_INODE_PERM,
+ LPROC_LL_FALLOCATE,
+ LPROC_LL_INODE_OCOUNT,
+ LPROC_LL_INODE_OPCLTM,
LPROC_LL_FILE_OPCODES
};
/* llite/dir.c */
-struct ll_dir_chain {
+enum get_default_layout_type {
+ GET_DEFAULT_LAYOUT_ROOT = 1,
};
-static inline void ll_dir_chain_init(struct ll_dir_chain *chain)
-{
-}
-
-static inline void ll_dir_chain_fini(struct ll_dir_chain *chain)
-{
-}
-
extern const struct file_operations ll_dir_operations;
extern const struct inode_operations ll_dir_inode_operations;
#ifdef HAVE_DIR_CONTEXT
int ll_get_mdt_idx(struct inode *inode);
int ll_get_mdt_idx_by_fid(struct ll_sb_info *sbi, const struct lu_fid *fid);
struct page *ll_get_dir_page(struct inode *dir, struct md_op_data *op_data,
- __u64 offset, struct ll_dir_chain *chain);
+ __u64 offset);
void ll_release_page(struct inode *inode, struct page *page, bool remove);
+int quotactl_ioctl(struct ll_sb_info *sbi, struct if_quotactl *qctl);
/* llite/namei.c */
extern const struct inode_operations ll_special_inode_operations;
extern const struct address_space_operations ll_aops;
/* 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 const struct inode_operations ll_file_inode_operations;
+const struct file_operations *ll_select_file_operations(struct ll_sb_info *sbi);
extern int ll_have_md_lock(struct inode *inode, __u64 *bits,
enum ldlm_mode l_req_mode);
extern enum ldlm_mode ll_take_md_lock(struct inode *inode, __u64 bits,
int ll_file_release(struct inode *inode, struct file *file);
int ll_release_openhandle(struct dentry *, struct lookup_intent *);
int ll_md_real_close(struct inode *inode, fmode_t fmode);
+void ll_track_file_opens(struct inode *inode);
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);
#else
int ll_getattr(struct vfsmount *mnt, struct dentry *de, struct kstat *stat);
#endif
+int ll_getattr_dentry(struct dentry *de, struct kstat *stat, u32 request_mask,
+ unsigned int flags, bool foreign);
+#ifdef CONFIG_LUSTRE_FS_POSIX_ACL
struct posix_acl *ll_get_acl(struct inode *inode, int type);
-#ifdef HAVE_IOP_SET_ACL
-#ifdef CONFIG_FS_POSIX_ACL
int ll_set_acl(struct inode *inode, struct posix_acl *acl, int type);
-#else /* !CONFIG_FS_POSIX_ACL */
+#else /* !CONFIG_LUSTRE_FS_POSIX_ACL */
+#define ll_get_acl NULL
#define ll_set_acl NULL
-#endif /* CONFIG_FS_POSIX_ACL */
+#endif /* CONFIG_LUSTRE_FS_POSIX_ACL */
+
+static inline int ll_xflags_to_inode_flags(int xflags)
+{
+ return ((xflags & FS_XFLAG_SYNC) ? S_SYNC : 0) |
+ ((xflags & FS_XFLAG_NOATIME) ? S_NOATIME : 0) |
+ ((xflags & FS_XFLAG_APPEND) ? S_APPEND : 0) |
+ ((xflags & FS_XFLAG_IMMUTABLE) ? S_IMMUTABLE : 0);
+}
+
+static inline int ll_inode_flags_to_xflags(int inode_flags)
+{
+ return ((inode_flags & S_SYNC) ? FS_XFLAG_SYNC : 0) |
+ ((inode_flags & S_NOATIME) ? FS_XFLAG_NOATIME : 0) |
+ ((inode_flags & S_APPEND) ? FS_XFLAG_APPEND : 0) |
+ ((inode_flags & S_IMMUTABLE) ? FS_XFLAG_IMMUTABLE : 0);
+}
-#endif
int ll_migrate(struct inode *parent, struct file *file,
struct lmv_user_md *lum, const char *name);
int ll_get_fid_by_name(struct inode *parent, const char *name,
int namelen, struct lu_fid *fid, struct inode **inode);
-#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_ioctl_check_project(struct inode *inode, struct fsxattr *fa);
int ll_ioctl_fsgetxattr(struct inode *inode, unsigned int cmd,
unsigned long arg);
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, void **lmmp,
- int *lmm_size, struct ptlrpc_request **request,
- u64 valid);
-#ifdef HAVE_FILE_FSYNC_4ARGS
+int ll_dir_getstripe_default(struct inode *inode, void **lmmp,
+ int *lmm_size, struct ptlrpc_request **request,
+ struct ptlrpc_request **root_request, u64 valid);
+int ll_dir_getstripe(struct inode *inode, void **plmm, int *plmm_size,
+ struct ptlrpc_request **request, u64 valid);
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);
-#endif
int ll_merge_attr(const struct lu_env *env, struct inode *inode);
int ll_fid2path(struct inode *inode, void __user *arg);
int ll_data_version(struct inode *inode, __u64 *data_version, int flags);
extern const struct dentry_operations ll_d_ops;
void ll_intent_drop_lock(struct lookup_intent *);
void ll_intent_release(struct lookup_intent *);
-void ll_invalidate_aliases(struct inode *);
+void ll_prune_aliases(struct inode *inode);
void ll_lookup_finish_locks(struct lookup_intent *it, struct dentry *dentry);
int ll_revalidate_it_finish(struct ptlrpc_request *request,
struct lookup_intent *it, struct dentry *de);
/* llite/llite_lib.c */
-extern struct super_operations lustre_super_operations;
+extern const struct super_operations lustre_super_operations;
void ll_lli_init(struct ll_inode_info *lli);
-int ll_fill_super(struct super_block *sb, struct vfsmount *mnt);
+int ll_fill_super(struct super_block *sb);
void ll_put_super(struct super_block *sb);
void ll_kill_super(struct super_block *sb);
struct inode *ll_inode_from_resource_lock(struct ldlm_lock *lock);
int ll_statfs_internal(struct ll_sb_info *sbi, struct obd_statfs *osfs,
u32 flags);
int ll_update_inode(struct inode *inode, struct lustre_md *md);
-void ll_update_inode_flags(struct inode *inode, int ext_flags);
+void ll_update_inode_flags(struct inode *inode, unsigned int ext_flags);
int ll_read_inode2(struct inode *inode, void *opaque);
+void ll_truncate_inode_pages_final(struct inode *inode);
void ll_delete_inode(struct inode *inode);
int ll_iocontrol(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg);
int ll_flush_ctx(struct inode *inode);
void ll_umount_begin(struct super_block *sb);
int ll_remount_fs(struct super_block *sb, int *flags, char *data);
-#ifdef HAVE_SUPEROPS_USE_DENTRY
int ll_show_options(struct seq_file *seq, struct dentry *dentry);
-#else
-int ll_show_options(struct seq_file *seq, struct vfsmount *vfs);
-#endif
void ll_dirty_page_discard_warn(struct page *page, int ioret);
int ll_prep_inode(struct inode **inode, struct ptlrpc_request *req,
struct super_block *, struct lookup_intent *);
struct lov_user_md **kbuf);
void ll_open_cleanup(struct super_block *sb, struct ptlrpc_request *open_req);
-void ll_dom_finish_open(struct inode *inode, struct ptlrpc_request *req,
- struct lookup_intent *it);
+void ll_dom_finish_open(struct inode *inode, struct ptlrpc_request *req);
/* Compute expected user md size when passing in a md from user space */
static inline ssize_t ll_lov_user_md_size(const struct lov_user_md *lum)
}
/* llite/llite_nfs.c */
-extern struct export_operations lustre_export_operations;
+extern const struct export_operations lustre_export_operations;
__u32 get_uuid2int(const char *name, int len);
struct inode *search_inode_for_lustre(struct super_block *sb,
const struct lu_fid *fid);
int ll_dir_get_parent_fid(struct inode *dir, struct lu_fid *parent_fid);
/* llite/symlink.c */
-extern struct inode_operations ll_fast_symlink_inode_operations;
+extern const struct inode_operations ll_fast_symlink_inode_operations;
/**
* IO arguments for various VFS I/O interfaces.
*/
struct vvp_io_args {
/** normal/sendfile/splice */
- enum vvp_io_subtype via_io_subtype;
-
union {
struct {
struct kiocb *via_iocb;
struct iov_iter *via_iter;
} normal;
- struct {
- struct pipe_inode_info *via_pipe;
- unsigned int via_flags;
- } splice;
} u;
};
};
struct ll_thread_info {
- struct iov_iter lti_iter;
struct vvp_io_args lti_args;
struct ra_io_arg lti_ria;
struct ll_cl_context lti_io_ctx;
return lti;
}
-static inline struct vvp_io_args *ll_env_args(const struct lu_env *env,
- enum vvp_io_subtype type)
+static inline struct vvp_io_args *ll_env_args(const struct lu_env *env)
{
- struct vvp_io_args *via = &ll_env_info(env)->lti_args;
-
- via->via_io_subtype = type;
-
- return via;
+ return &ll_env_info(env)->lti_args;
}
+void ll_io_init(struct cl_io *io, struct file *file, enum cl_io_type iot,
+ struct vvp_io_args *args);
+
/* llite/llite_mmap.c */
-int ll_teardown_mmaps(struct address_space *mapping, __u64 first, __u64 last);
int ll_file_mmap(struct file * file, struct vm_area_struct * vma);
void policy_from_vma(union ldlm_policy_data *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);
-static inline void ll_invalidate_page(struct page *vmpage)
-{
- struct address_space *mapping = vmpage->mapping;
- loff_t offset = vmpage->index << PAGE_SHIFT;
-
- LASSERT(PageLocked(vmpage));
- if (mapping == NULL)
- return;
-
- /*
- * truncate_complete_page() calls
- * a_ops->invalidatepage()->cl_page_delete()->vvp_page_delete().
- */
- ll_teardown_mmaps(mapping, offset, offset + 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 */
*/
unsigned int sai_ls_all:1, /* "ls -al", do stat-ahead for
* hidden entries */
- sai_agl_valid:1,/* AGL is valid for the dir */
sai_in_readpage:1;/* statahead is in readdir()*/
wait_queue_head_t sai_waitq; /* stat-ahead wait queue */
- struct ptlrpc_thread sai_thread; /* stat-ahead thread */
- struct ptlrpc_thread sai_agl_thread; /* AGL thread */
+ struct task_struct *sai_task; /* stat-ahead thread */
+ struct task_struct *sai_agl_task; /* AGL thread */
struct list_head sai_interim_entries; /* entries which got async
* stat reply, but not
* instantiated */
atomic_t sai_cache_count; /* entry count in cache */
};
-int ll_statahead(struct inode *dir, struct dentry **dentry, bool unplug);
+int ll_revalidate_statahead(struct inode *dir, struct dentry **dentry,
+ bool unplug);
+int ll_start_statahead(struct inode *dir, struct dentry *dentry, bool agl);
void ll_authorize_statahead(struct inode *dir, void *key);
void ll_deauthorize_statahead(struct inode *dir, void *key);
return false;
/* not the same process, don't statahead */
- if (lli->lli_opendir_pid != current_pid())
+ if (lli->lli_opendir_pid != current->pid)
return false;
/*
* 'lld_sa_generation == lli->lli_sa_generation'.
*/
ldd = ll_d2d(dentry);
- if (ldd != NULL && ldd->lld_sa_generation == lli->lli_sa_generation)
+ if (ldd != NULL && lli->lli_sa_generation &&
+ ldd->lld_sa_generation == lli->lli_sa_generation)
return false;
return true;
static inline int ll_file_nolock(const struct file *file)
{
- struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
+ struct ll_file_data *fd = file->private_data;
struct inode *inode = file_inode((struct file *)file);
- LASSERT(fd != NULL);
- return ((fd->fd_flags & LL_FILE_IGNORE_LOCK) ||
- (ll_i2sbi(inode)->ll_flags & LL_SBI_NOLCK));
+ 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,
*bits = it->it_lock_bits;
}
-static inline void ll_lock_dcache(struct inode *inode)
-{
-#ifdef HAVE_DCACHE_LOCK
- spin_lock(&dcache_lock);
-#else
- spin_lock(&inode->i_lock);
-#endif
-}
-
-static inline void ll_unlock_dcache(struct inode *inode)
-{
-#ifdef HAVE_DCACHE_LOCK
- spin_unlock(&dcache_lock);
-#else
- spin_unlock(&inode->i_lock);
-#endif
-}
-
static inline int d_lustre_invalid(const struct dentry *dentry)
{
struct ll_dentry_data *lld = ll_d2d(dentry);
/*
* Mark dentry INVALID, if dentry refcount is zero (this is normally case for
- * ll_md_blocking_ast), unhash this dentry, and let dcache to reclaim it later;
- * else dput() of the last refcount will unhash this dentry and kill it.
+ * ll_md_blocking_ast), it will be pruned by ll_prune_aliases() and
+ * ll_prune_negative_children(); otherwise dput() of the last refcount will
+ * unhash this dentry and kill it.
*/
-static inline void d_lustre_invalidate(struct dentry *dentry, int nested)
+static inline void d_lustre_invalidate(struct dentry *dentry)
{
- CDEBUG(D_DENTRY, "invalidate dentry %.*s (%p) parent %p inode %p "
- "refc %d\n", dentry->d_name.len, dentry->d_name.name, dentry,
+ CDEBUG(D_DENTRY, "invalidate dentry %pd (%p) parent %p inode %p refc %d\n",
+ dentry, dentry,
dentry->d_parent, dentry->d_inode, ll_d_count(dentry));
- spin_lock_nested(&dentry->d_lock,
- nested ? DENTRY_D_LOCK_NESTED : DENTRY_D_LOCK_NORMAL);
+ spin_lock(&dentry->d_lock);
__d_lustre_invalidate(dentry);
- /*
- * We should be careful about dentries created by d_obtain_alias().
- * These dentries are not put in the dentry tree, instead they are
- * linked to sb->s_anon through dentry->d_hash.
- * shrink_dcache_for_umount() shrinks the tree and sb->s_anon list.
- * If we unhashed such a dentry, unmount would not be able to find
- * it and busy inodes would be reported.
- */
- if (ll_d_count(dentry) == 0 && !(dentry->d_flags & DCACHE_DISCONNECTED))
- __d_drop(dentry);
spin_unlock(&dentry->d_lock);
}
spin_unlock(&dentry->d_lock);
}
+static inline dev_t ll_compat_encode_dev(dev_t dev)
+{
+ /* The compat_sys_*stat*() syscalls will fail unless the
+ * device majors and minors are both less than 256. Note that
+ * the value returned here will be passed through
+ * old_encode_dev() in cp_compat_stat(). And so we are not
+ * trying to return a valid compat (u16) device number, just
+ * one that will pass the old_valid_dev() check. */
+
+ return MKDEV(MAJOR(dev) & 0xff, MINOR(dev) & 0xff);
+}
+
int ll_layout_conf(struct inode *inode, const struct cl_object_conf *conf);
int ll_layout_refresh(struct inode *inode, __u32 *gen);
int ll_layout_restore(struct inode *inode, loff_t start, __u64 length);
u64 cl_fid_build_ino(const struct lu_fid *fid, int api32);
u32 cl_fid_build_gen(const struct lu_fid *fid);
+static inline struct pcc_super *ll_i2pccs(struct inode *inode)
+{
+ return &ll_i2sbi(inode)->ll_pcc_super;
+}
+
+static inline struct pcc_super *ll_info2pccs(struct ll_inode_info *lli)
+{
+ return ll_i2pccs(ll_info2i(lli));
+}
+
+#ifdef HAVE_LUSTRE_CRYPTO
+/* crypto.c */
+extern const struct llcrypt_operations lustre_cryptops;
+#endif
+/* llite/llite_foreign.c */
+int ll_manage_foreign(struct inode *inode, struct lustre_md *lmd);
+bool ll_foreign_is_openable(struct dentry *dentry, unsigned int flags);
+bool ll_foreign_is_removable(struct dentry *dentry, bool unset);
+
#endif /* LLITE_INTERNAL_H */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff