/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * Copyright (C) 2003 Cluster File Systems, Inc.
- *
- * This code is issued under the GNU General Public License.
- * See the file COPYING in this distribution
*/
#ifndef LLITE_INTERNAL_H
#define LLITE_INTERNAL_H
+# include <linux/lustre_acl.h>
+
+#ifdef CONFIG_FS_POSIX_ACL
+# include <linux/fs.h>
+#ifdef HAVE_XATTR_ACL
+# include <linux/xattr_acl.h>
+#endif
+#ifdef HAVE_LINUX_POSIX_ACL_XATTR_H
+# include <linux/posix_acl_xattr.h>
+#endif
+#endif
+
+#include <lustre_debug.h>
+#include <lustre_ver.h>
+#include <lustre_disk.h> /* for s2sbi */
+
+#define LL_IT2STR(it) ((it) ? ldlm_it2str((it)->it_op) : "0")
+#define LUSTRE_FPRIVATE(file) ((file)->private_data)
+
+#ifdef LUSTRE_KERNEL_VERSION
+static inline struct lookup_intent *ll_nd2it(struct nameidata *nd)
+{
+ return &nd->intent;
+}
+#endif
+
+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 LUSTRE_KERNEL_VERSION
+ struct lookup_intent *lld_it;
+#endif
+};
+
+#define ll_d2d(de) ((struct ll_dentry_data*) de->d_fsdata)
+
+extern struct file_operations ll_pgcache_seq_fops;
+
+#define LLI_INODE_MAGIC 0x111d0de5
+#define LLI_INODE_DEAD 0xdeadd00d
+
+/* remote client permission cache */
+#define REMOTE_PERM_HASHSIZE 16
+
+/* llite setxid/access permission for user on remote client */
+struct ll_remote_perm {
+ struct hlist_node lrp_list;
+ uid_t lrp_uid;
+ gid_t lrp_gid;
+ uid_t lrp_fsuid;
+ gid_t lrp_fsgid;
+ int lrp_access_perm; /* MAY_READ/WRITE/EXEC, this
+ is access permission with
+ lrp_fsuid/lrp_fsgid. */
+};
+
+enum lli_flags {
+ /* MDS has an authority for the Size-on-MDS attributes. */
+ LLIF_MDS_SIZE_LOCK = (1 << 0),
+ /* Epoch close is postponed. */
+ LLIF_EPOCH_PENDING = (1 << 1),
+ /* DONE WRITING is allowed. */
+ LLIF_DONE_WRITING = (1 << 2),
+ /* Sizeon-on-MDS attributes are changed. An attribute update needs to
+ * be sent to MDS. */
+ LLIF_SOM_DIRTY = (1 << 3),
+};
+
+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;
+
+ /* 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;
+
+ /* remote permission hash */
+ struct hlist_head *lli_remote_perms;
+ unsigned long lli_rmtperm_utime;
+ struct semaphore lli_rmtperm_sem;
+
+ 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;
+
+ /* identifying fields for both metadata and data stacks. */
+ struct lu_fid lli_fid;
+ struct lov_stripe_md *lli_smd;
+
+ /* fid capability */
+ /* 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;
+};
+
+/*
+ * Locking to guarantee consistency of non-atomic updates to long long i_size,
+ * consistency between file size and KMS, and consistency within
+ * ->lli_smd->lsm_oinfo[]'s.
+ *
+ * Implemented by ->lli_size_sem and ->lsm_sem, nested in that order.
+ */
+
+void ll_inode_size_lock(struct inode *inode, int lock_lsm);
+void ll_inode_size_unlock(struct inode *inode, int unlock_lsm);
+
+// FIXME: replace the name of this with LL_I to conform to kernel stuff
+// static inline struct ll_inode_info *LL_I(struct inode *inode)
+static inline struct ll_inode_info *ll_i2info(struct inode *inode)
+{
+ return container_of(inode, struct ll_inode_info, lli_vfs_inode);
+}
+
/* default to about 40meg of readahead on a given system. That much tied
* up in 512k readahead requests serviced at 40ms each is about 1GB/s. */
-#define SBI_DEFAULT_RA_MAX ((40 << 20) >> PAGE_CACHE_SHIFT)
+#define SBI_DEFAULT_READAHEAD_MAX (40UL << (20 - CFS_PAGE_SHIFT))
+
+/* default to read-ahead full files smaller than 2MB on the second read */
+#define SBI_DEFAULT_READAHEAD_WHOLE_MAX (2UL << (20 - CFS_PAGE_SHIFT))
+
+enum ra_stat {
+ RA_STAT_HIT = 0,
+ RA_STAT_MISS,
+ RA_STAT_DISTANT_READPAGE,
+ RA_STAT_MISS_IN_WINDOW,
+ RA_STAT_FAILED_GRAB_PAGE,
+ RA_STAT_FAILED_MATCH,
+ RA_STAT_DISCARDED,
+ RA_STAT_ZERO_LEN,
+ RA_STAT_ZERO_WINDOW,
+ RA_STAT_EOF,
+ RA_STAT_MAX_IN_FLIGHT,
+ RA_STAT_WRONG_GRAB_PAGE,
+ _NR_RA_STAT,
+};
+
+struct ll_ra_info {
+ unsigned long ra_cur_pages;
+ unsigned long ra_max_pages;
+ unsigned long ra_max_read_ahead_whole_pages;
+ unsigned long ra_stats[_NR_RA_STAT];
+};
+
+/* LL_HIST_MAX=32 causes an overflow */
+#define LL_HIST_MAX 28
+#define LL_HIST_START 12 /* buckets start at 2^12 = 4k */
+#define LL_PROCESS_HIST_MAX 10
+struct per_process_info {
+ pid_t pid;
+ struct obd_histogram pp_r_hist;
+ struct obd_histogram pp_w_hist;
+};
+
+/* pp_extents[LL_PROCESS_HIST_MAX] will hold the combined process info */
+struct ll_rw_extents_info {
+ struct per_process_info pp_extents[LL_PROCESS_HIST_MAX + 1];
+};
+
+#define LL_OFFSET_HIST_MAX 100
+struct ll_rw_process_info {
+ pid_t rw_pid;
+ int rw_op;
+ loff_t rw_range_start;
+ loff_t rw_range_end;
+ loff_t rw_last_file_pos;
+ loff_t rw_offset;
+ size_t rw_smallest_extent;
+ size_t rw_largest_extent;
+ struct file *rw_last_file;
+};
+
+enum stats_track_type {
+ STATS_TRACK_ALL = 0, /* track all processes */
+ STATS_TRACK_PID, /* track process with this pid */
+ STATS_TRACK_PPID, /* track processes with this ppid */
+ STATS_TRACK_GID, /* track processes with this gid */
+ STATS_TRACK_LAST,
+};
+
+/* flags for sbi->ll_flags */
+#define LL_SBI_NOLCK 0x01 /* DLM locking disabled (directio-only) */
+#define LL_SBI_CHECKSUM 0x02 /* checksum each page as it's written */
+#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 */
struct ll_sb_info {
- /* this protects pglist and max_r_a_pages. It isn't safe to
+ struct list_head ll_list;
+ /* 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 obd_uuid ll_sb_uuid;
- struct obd_export *ll_mdc_exp;
- struct obd_export *ll_osc_exp;
+ struct obd_export *ll_md_exp;
+ struct obd_export *ll_dt_exp;
struct proc_dir_entry* ll_proc_root;
- obd_id ll_rootino; /* number of root inode */
-
- struct lustre_mount_data *ll_lmd;
- char *ll_instance;
+ struct lu_fid ll_root_fid; /* root object fid */
int ll_flags;
struct list_head ll_conn_chain; /* per-conn chain of SBs */
+ struct lustre_client_ocd ll_lco;
- struct hlist_head ll_orphan_dentry_list; /*please don't ask -p*/
+ struct list_head ll_orphan_dentry_list; /*please don't ask -p*/
struct ll_close_queue *ll_lcq;
struct lprocfs_stats *ll_stats; /* lprocfs stats counter */
+ unsigned long ll_async_page_max;
+ unsigned long ll_async_page_count;
unsigned long ll_pglist_gen;
- struct list_head ll_pglist;
+ struct list_head ll_pglist; /* all pages (llap_pglist_item) */
- unsigned long ll_read_ahead_pages;
- unsigned long ll_max_read_ahead_pages;
+ 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;
+
+ /* 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;
+ enum stats_track_type ll_stats_track_type;
+ int ll_stats_track_id;
+ int ll_rw_stats_on;
+ dev_t ll_sdev_orig; /* save s_dev before assign for clustred nfs*/
};
+#define LL_DEFAULT_MAX_RW_CHUNK (32 * 1024 * 1024)
+
+struct ll_ra_read {
+ pgoff_t lrr_start;
+ pgoff_t lrr_count;
+ struct task_struct *lrr_reader;
+ struct list_head lrr_linkage;
+};
+
+/*
+ * per file-descriptor read-ahead data.
+ */
struct ll_readahead_state {
spinlock_t ras_lock;
- unsigned long ras_last_readpage, ras_consecutive;
+ /*
+ * 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
+ * is reset on each seek, this is effectively a number of consecutive
+ * accesses. Maybe ->ras_accessed_in_window is better name.
+ *
+ * XXX nikita: window is also reset (by ras_update()) when Lustre
+ * believes that memory pressure evicts read-ahead pages. In that
+ * case, it probably doesn't make sense to expand window to
+ * PTLRPC_MAX_BRW_PAGES on the third access.
+ */
+ unsigned long ras_consecutive_pages;
+ /*
+ * 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;
+ /*
+ * Parameters of current read-ahead window. Handled by
+ * ras_update(). On the initial access to the file or after a seek,
+ * window is reset to 0. After 3 consecutive accesses, window is
+ * 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;
+ /*
+ * Where next read-ahead should start at. This lies within read-ahead
+ * window. Read-ahead window is read in pieces rather than at once
+ * because: 1. lustre limits total number of pages under read-ahead by
+ * ->ra_max_pages (see ll_ra_count_get()), 2. client cannot read pages
+ * not covered by DLM lock.
+ */
unsigned long ras_next_readahead;
+ /*
+ * 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;
+ /*
+ * list of struct ll_ra_read's one per read(2) call current in
+ * progress against this file descriptor. Used by read-ahead code,
+ * protected by ->ras_lock.
+ */
+ struct list_head ras_read_beads;
+};
+struct ll_file_dir {
};
-extern kmem_cache_t *ll_file_data_slab;
+extern cfs_mem_cache_t *ll_file_data_slab;
struct lustre_handle;
struct ll_file_data {
- struct obd_client_handle fd_mds_och;
struct ll_readahead_state fd_ras;
- __u32 fd_flags;
+ int fd_omode;
struct lustre_handle fd_cwlockh;
unsigned long fd_gid;
+ struct ll_file_dir fd_dir;
+ __u32 fd_flags;
};
struct lov_stripe_md;
extern spinlock_t inode_lock;
-extern void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi);
extern struct proc_dir_entry *proc_lustre_fs_root;
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
-# define hlist_del_init list_del_init
-#endif
-
static inline struct inode *ll_info2i(struct ll_inode_info *lli)
{
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
return &lli->lli_vfs_inode;
-#else
- return list_entry(lli, struct inode, u.generic_ip);
-#endif
-}
-
-static inline void ll_i2uctxt(struct ll_uctxt *ctxt, struct inode *i1,
- struct inode *i2)
-{
- LASSERT(i1);
- LASSERT(ctxt);
-
- if (in_group_p(i1->i_gid))
- ctxt->gid1 = i1->i_gid;
- else
- ctxt->gid1 = -1;
-
- if (i2) {
- if (in_group_p(i2->i_gid))
- ctxt->gid2 = i2->i_gid;
- else
- ctxt->gid2 = -1;
- } else
- ctxt->gid2 = 0;
}
struct it_cb_data {
obd_id hash;
};
+void ll_i2gids(__u32 *suppgids, struct inode *i1,struct inode *i2);
+
#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;
+ 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;
void *llap_cookie;
struct page *llap_page;
struct list_head llap_pending_write;
- /* only trust these if the page lock is providing exclusion */
- int llap_write_queued:1,
- llap_defer_uptodate:1;
- struct list_head llap_proc_item;
+ struct list_head llap_pglist_item;
+ /* checksum for paranoid I/O debugging */
+ __u32 llap_checksum;
};
-#define LL_CDEBUG_PAGE(mask, page, fmt, arg...) \
- CDEBUG(mask, "page %p map %p ind %lu priv %0lx: " fmt, \
- page, page->mapping, page->index, page->private, ## arg)
+/*
+ * 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_MAX,
+};
+extern char *llap_origins[];
+
+#ifdef HAVE_REGISTER_CACHE
+#define ll_register_cache(cache) register_cache(cache)
+#define ll_unregister_cache(cache) unregister_cache(cache)
+#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);
+struct ll_ra_read *ll_ra_read_get(struct file *f);
/* llite/lproc_llite.c */
+#ifdef LPROCFS
int lprocfs_register_mountpoint(struct proc_dir_entry *parent,
struct super_block *sb, char *osc, char *mdc);
void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi);
+void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, int count);
+#else
+static inline int lprocfs_register_mountpoint(struct proc_dir_entry *parent,
+ struct super_block *sb, char *osc, char *mdc){return 0;}
+static inline void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi) {}
+static void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, int count) {}
+#endif
+
/* llite/dir.c */
extern struct file_operations ll_dir_operations;
struct inode *ll_iget(struct super_block *sb, ino_t hash,
struct lustre_md *lic);
struct dentry *ll_find_alias(struct inode *, struct dentry *);
-int ll_mdc_cancel_unused(struct lustre_handle *, struct inode *, int flags,
- void *opaque);
-int ll_mdc_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *,
- void *data, int flag);
-void ll_prepare_mdc_op_data(struct mdc_op_data *,
- struct inode *i1, struct inode *i2,
- const char *name, int namelen, int mode);
+int ll_md_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *,
+ void *data, int flag);
+#ifndef LUSTRE_KERNEL_VERSION
+struct lookup_intent *ll_convert_intent(struct open_intent *oit,
+ int lookup_flags);
+#endif
/* 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);
-void ll_ap_completion(void *data, int cmd, struct obdo *oa, int rc);
+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;
void ll_removepage(struct page *page);
int ll_readpage(struct file *file, struct page *page);
-struct ll_async_page *llap_from_cookie(void *cookie);
-struct ll_async_page *llap_from_page(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_sync_page_range(struct inode *, struct address_space *, loff_t, size_t);
/* 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);
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_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_glimpse_size(struct inode *inode, struct ost_lvb *lvb);
-int ll_local_open(struct file *file, struct lookup_intent *it);
-int ll_mdc_close(struct obd_export *mdc_exp, struct inode *inode,
- struct file *file);
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
-int ll_getattr(struct vfsmount *mnt, struct dentry *de,
+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_release_openhandle(struct dentry *, struct lookup_intent *);
+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,
+ 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);
+int ll_getattr_it(struct vfsmount *mnt, struct dentry *de,
struct lookup_intent *it, struct kstat *stat);
-#endif
+int ll_getattr(struct vfsmount *mnt, struct dentry *de, struct kstat *stat);
+struct ll_file_data *ll_file_data_get(void);
+int ll_inode_permission(struct inode *inode, int mask, struct nameidata *nd);
+int ll_lov_setstripe_ea_info(struct inode *inode, struct file *file,
+ int flags, struct lov_user_md *lum,
+ int lum_size);
+int ll_lov_getstripe_ea_info(struct inode *inode, const char *filename,
+ struct lov_mds_md **lmm, int *lmm_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 *lmm_size, struct ptlrpc_request **request);
/* llite/dcache.c */
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);
+int ll_dcompare(struct dentry *parent, struct qstr *d_name, struct qstr *name);
+int ll_revalidate_it_finish(struct ptlrpc_request *request, int offset,
+ struct lookup_intent *it, struct dentry *de);
/* llite/llite_lib.c */
-
extern struct super_operations lustre_super_operations;
char *ll_read_opt(const char *opt, char *data);
-int ll_set_opt(const char *opt, char *data, int fl);
-void ll_options(char *options, char **ost, char **mds, int *flags);
void ll_lli_init(struct ll_inode_info *lli);
-int ll_fill_super(struct super_block *sb, void *data, int silent);
-int lustre_fill_super(struct super_block *sb, void *data, int silent);
-void lustre_put_super(struct super_block *sb);
+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_lock(struct ldlm_lock *lock);
void ll_clear_inode(struct inode *inode);
-int ll_attr2inode(struct inode *inode, struct iattr *attr, int trunc);
int ll_setattr_raw(struct inode *inode, 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);
+#else
+int ll_statfs(struct dentry *de, struct kstatfs *sfs);
+#endif
int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
- unsigned long maxage);
-void ll_update_inode(struct inode *inode, struct mds_body *body,
- struct lov_stripe_md *lsm);
-int it_disposition(struct lookup_intent *it, int flag);
-void it_set_disposition(struct lookup_intent *it, int flag);
+ __u64 max_age);
+void ll_update_inode(struct inode *inode, struct lustre_md *md);
void ll_read_inode2(struct inode *inode, void *opaque);
+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);
+#ifdef HAVE_UMOUNTBEGIN_VFSMOUNT
+void ll_umount_begin(struct vfsmount *vfsmnt, int flags);
+#else
void ll_umount_begin(struct super_block *sb);
-int ll_prep_inode(struct obd_export *exp, struct inode **inode,
- struct ptlrpc_request *req, int offset, struct super_block *);
+#endif
+int ll_remount_fs(struct super_block *sb, int *flags, char *data);
+int ll_prep_inode(struct inode **inode, struct ptlrpc_request *req,
+ int offset, 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 ll_sb_info *sbi,
+ 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);
+int ll_ioctl_getfacl(struct inode *inode, struct rmtacl_ioctl_data *ioc);
+int ll_ioctl_setfacl(struct inode *inode, struct rmtacl_ioctl_data *ioc);
+struct md_op_data *ll_prep_md_op_data(struct md_op_data *op_data,
+ struct inode *i1, struct inode *i2,
+ const char *name, int namelen,
+ int mode, __u32 opc, void *data);
+void ll_finish_md_op_data(struct md_op_data *op_data);
+
+/* 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);
/* llite/llite_close.c */
struct ll_close_queue {
spinlock_t lcq_lock;
- struct list_head lcq_list;
+ struct list_head lcq_head;
wait_queue_head_t lcq_waitq;
struct completion lcq_comp;
+ atomic_t lcq_stop;
};
void llap_write_pending(struct inode *inode, struct ll_async_page *llap);
-void llap_write_complete(struct inode *inode, struct ll_async_page *llap);
-void ll_open_complete(struct inode *inode);
-int ll_is_inode_dirty(struct inode *inode);
-void ll_try_done_writing(struct inode *inode);
-void ll_queue_done_writing(struct inode *inode);
+int llap_write_complete(struct inode *inode, struct ll_async_page *llap);
+int ll_inode_dirty(struct inode *inode, unsigned long flags);
+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);
-/* generic */
-#define LL_SUPER_MAGIC 0x0BD00BD0
+/* llite/llite_mmap.c */
+typedef struct rb_root rb_root_t;
+typedef struct rb_node rb_node_t;
+
+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;
+};
-#define LL_SBI_NOLCK 0x1
-#define LL_SBI_READAHEAD 0x2
+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);
-#define LL_MAX_BLKSIZE (4UL * 1024 * 1024)
+#define ll_s2sbi(sb) (s2lsi(sb)->lsi_llsbi)
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
-#define ll_s2sbi(sb) ((struct ll_sb_info *)((sb)->s_fs_info))
void __d_rehash(struct dentry * entry, int lock);
static inline __u64 ll_ts2u64(struct timespec *time)
{
__u64 t = time->tv_sec;
return t;
}
-#else /* 2.4 here */
-#define ll_s2sbi(sb) ((struct ll_sb_info *)((sb)->u.generic_sbp))
-static inline __u64 ll_ts2u64(time_t *time)
-{
- return *time;
-}
-#endif
/* don't need an addref as the sb_info should be holding one */
-static inline struct obd_export *ll_s2obdexp(struct super_block *sb)
+static inline struct obd_export *ll_s2dtexp(struct super_block *sb)
{
- return ll_s2sbi(sb)->ll_osc_exp;
+ return ll_s2sbi(sb)->ll_dt_exp;
}
/* don't need an addref as the sb_info should be holding one */
-static inline struct obd_export *ll_s2mdcexp(struct super_block *sb)
+static inline struct obd_export *ll_s2mdexp(struct super_block *sb)
{
- return ll_s2sbi(sb)->ll_mdc_exp;
+ return ll_s2sbi(sb)->ll_md_exp;
}
static inline struct client_obd *sbi2mdc(struct ll_sb_info *sbi)
{
- struct obd_device *obd = sbi->ll_mdc_exp->exp_obd;
+ struct obd_device *obd = sbi->ll_md_exp->exp_obd;
if (obd == NULL)
LBUG();
return &obd->u.cli;
return ll_s2sbi(inode->i_sb);
}
-static inline struct obd_export *ll_i2obdexp(struct inode *inode)
+static inline struct obd_export *ll_i2dtexp(struct inode *inode)
{
- return ll_s2obdexp(inode->i_sb);
+ return ll_s2dtexp(inode->i_sb);
}
-static inline struct obd_export *ll_i2mdcexp(struct inode *inode)
+static inline struct obd_export *ll_i2mdexp(struct inode *inode)
{
- return ll_s2mdcexp(inode->i_sb);
+ return ll_s2mdexp(inode->i_sb);
}
-static inline void ll_inode2fid(struct ll_fid *fid, struct inode *inode)
+static inline struct lu_fid *ll_inode2fid(struct inode *inode)
{
- mdc_pack_fid(fid, inode->i_ino, inode->i_generation,
- inode->i_mode & S_IFMT);
+ struct lu_fid *fid;
+ LASSERT(inode != NULL);
+ fid = &ll_i2info(inode)->lli_fid;
+ LASSERT(fid_is_igif(fid) || fid_ver(fid) == 0);
+ return fid;
}
static inline int ll_mds_max_easize(struct super_block *sb)
return ll_i2info(inode)->lli_maxbytes;
}
+/* llite/xattr.c */
+int ll_setxattr(struct dentry *dentry, const char *name,
+ const void *value, size_t size, int flags);
+ssize_t ll_getxattr(struct dentry *dentry, const char *name,
+ void *buffer, size_t size);
+ssize_t ll_listxattr(struct dentry *dentry, char *buffer, size_t size);
+int ll_removexattr(struct dentry *dentry, const char *name);
+
+/* llite/remote_perm.c */
+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);
+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;
+
+int ll_capa_thread_start(void);
+void ll_capa_thread_stop(void);
+void ll_capa_timer_callback(unsigned long unused);
+
+struct obd_capa *ll_add_capa(struct inode *inode, struct obd_capa *ocapa);
+int ll_update_capa(struct obd_capa *ocapa, struct lustre_capa *capa);
+
+void ll_capa_open(struct inode *inode);
+void ll_capa_close(struct inode *inode);
+
+struct obd_capa *ll_mdscapa_get(struct inode *inode);
+struct obd_capa *ll_osscapa_get(struct inode *inode, __u64 opc);
+
+void ll_truncate_free_capa(struct obd_capa *ocapa);
+void ll_clear_inode_capas(struct inode *inode);
+void ll_print_capa_stat(struct ll_sb_info *sbi);
+
+/* llite ioctl register support rountine */
+#ifdef __KERNEL__
+enum llioc_iter {
+ LLIOC_CONT = 0,
+ LLIOC_STOP
+};
+
+#define LLIOC_MAX_CMD 256
+
+/*
+ * Rules to write a callback function:
+ *
+ * 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
+ * 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
+ * callback should return LLIOC_STOP; return LLIOC_STOP otherwise.
+ */
+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,
+ unsigned int cmd, unsigned long arg, int *rcp);
+
+/* export functions */
+/* 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
+ * belong to the command list @cmd.
+ *
+ * Return vaule:
+ * 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
+
#endif /* LLITE_INTERNAL_H */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff