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Date: Fri, 15 Nov 2013 00:32:39 +0800
From: Peng Tao <bergwolf@...il.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: linux-kernel@...r.kernel.org, James Simmons <uja.ornl@...il.com>,
Mikhail Pershin <mike.pershin@...el.com>,
Peng Tao <bergwolf@...il.com>,
Andreas Dilger <andreas.dilger@...el.com>
Subject: [PATCH 16/39] staging/lustre/lvfs: remove llog_lvfs.c and other lvfs code from llog
From: James Simmons <uja.ornl@...il.com>
- remove obdfilter/llog_lvfs.c
- remove lgh_file from llog_header
Lustre-change: http://review.whamcloud.com/5331
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-2158
Signed-off-by: Mikhail Pershin <mike.pershin@...el.com>
Signed-off-by: James Simmons <uja.ornl@...il.com>
Reviewed-by: Keith Mannthey <keith.mannthey@...el.com>
Reviewed-by: Andreas Dilger <andreas.dilger@...el.com>
Signed-off-by: Peng Tao <bergwolf@...il.com>
Signed-off-by: Andreas Dilger <andreas.dilger@...el.com>
---
.../lustre/lustre/include/linux/lustre_fsfilt.h | 84 --
drivers/staging/lustre/lustre/include/linux/lvfs.h | 5 -
drivers/staging/lustre/lustre/include/lustre_log.h | 4 -
drivers/staging/lustre/lustre/include/obd_class.h | 10 -
drivers/staging/lustre/lustre/lvfs/fsfilt_ext3.c | 760 ------------------
drivers/staging/lustre/lustre/obdclass/llog_cat.c | 34 +-
drivers/staging/lustre/lustre/obdclass/llog_lvfs.c | 847 --------------------
7 files changed, 13 insertions(+), 1731 deletions(-)
delete mode 100644 drivers/staging/lustre/lustre/lvfs/fsfilt_ext3.c
delete mode 100644 drivers/staging/lustre/lustre/obdclass/llog_lvfs.c
diff --git a/drivers/staging/lustre/lustre/include/linux/lustre_fsfilt.h b/drivers/staging/lustre/lustre/include/linux/lustre_fsfilt.h
index 4da6e372..b250cce 100644
--- a/drivers/staging/lustre/lustre/include/linux/lustre_fsfilt.h
+++ b/drivers/staging/lustre/lustre/include/linux/lustre_fsfilt.h
@@ -49,24 +49,13 @@
#include <obd.h>
#include <obd_class.h>
-typedef void (*fsfilt_cb_t)(struct obd_device *obd, __u64 last_rcvd,
- void *data, int error);
-
struct fsfilt_operations {
struct list_head fs_list;
struct module *fs_owner;
char *fs_type;
- char *(* fs_getlabel)(struct super_block *sb);
- void *(* fs_start)(struct inode *inode, int op, void *desc_private,
- int logs);
- int (* fs_commit)(struct inode *inode, void *handle,int force_sync);
int (* fs_map_inode_pages)(struct inode *inode, struct page **page,
int pages, unsigned long *blocks,
int create, struct mutex *sem);
- int (* fs_write_record)(struct file *, void *, int size, loff_t *,
- int force_sync);
- int (* fs_read_record)(struct file *, void *, int size, loff_t *);
- int (* fs_setup)(struct super_block *sb);
};
extern int fsfilt_register_ops(struct fsfilt_operations *fs_ops);
@@ -74,20 +63,6 @@ extern void fsfilt_unregister_ops(struct fsfilt_operations *fs_ops);
extern struct fsfilt_operations *fsfilt_get_ops(const char *type);
extern void fsfilt_put_ops(struct fsfilt_operations *fs_ops);
-static inline char *fsfilt_get_label(struct obd_device *obd,
- struct super_block *sb)
-{
- if (obd->obd_fsops->fs_getlabel == NULL)
- return NULL;
- if (obd->obd_fsops->fs_getlabel(sb)[0] == '\0')
- return NULL;
-
- return obd->obd_fsops->fs_getlabel(sb);
-}
-
-#define FSFILT_OP_UNLINK 1
-#define FSFILT_OP_CANCEL_UNLINK 10
-
#define __fsfilt_check_slow(obd, start, msg) \
do { \
if (cfs_time_before(jiffies, start + 15 * HZ)) \
@@ -109,63 +84,4 @@ do { \
start = jiffies; \
} while (0)
-static inline void *fsfilt_start_log(struct obd_device *obd,
- struct inode *inode, int op,
- struct obd_trans_info *oti, int logs)
-{
- unsigned long now = jiffies;
- void *parent_handle = oti ? oti->oti_handle : NULL;
- void *handle;
-
- handle = obd->obd_fsops->fs_start(inode, op, parent_handle, logs);
- CDEBUG(D_INFO, "started handle %p (%p)\n", handle, parent_handle);
-
- if (oti != NULL) {
- if (parent_handle == NULL) {
- oti->oti_handle = handle;
- } else if (handle != parent_handle) {
- CERROR("mismatch: parent %p, handle %p, oti %p\n",
- parent_handle, handle, oti);
- LBUG();
- }
- }
- fsfilt_check_slow(obd, now, "journal start");
- return handle;
-}
-
-static inline int fsfilt_commit(struct obd_device *obd, struct inode *inode,
- void *handle, int force_sync)
-{
- unsigned long now = jiffies;
- int rc = obd->obd_fsops->fs_commit(inode, handle, force_sync);
- CDEBUG(D_INFO, "committing handle %p\n", handle);
-
- fsfilt_check_slow(obd, now, "journal start");
-
- return rc;
-}
-
-static inline int fsfilt_read_record(struct obd_device *obd, struct file *file,
- void *buf, loff_t size, loff_t *offs)
-{
- return obd->obd_fsops->fs_read_record(file, buf, size, offs);
-}
-
-static inline int fsfilt_write_record(struct obd_device *obd, struct file *file,
- void *buf, loff_t size, loff_t *offs,
- int force_sync)
-{
- return obd->obd_fsops->fs_write_record(file, buf, size,offs,force_sync);
-}
-
-static inline int fsfilt_setup(struct obd_device *obd, struct super_block *fs)
-{
- if (obd->obd_fsops->fs_setup)
- return obd->obd_fsops->fs_setup(fs);
- return 0;
-}
-
-
-
-
#endif
diff --git a/drivers/staging/lustre/lustre/include/linux/lvfs.h b/drivers/staging/lustre/lustre/include/linux/lvfs.h
index e61f1b8..2080508 100644
--- a/drivers/staging/lustre/lustre/include/linux/lvfs.h
+++ b/drivers/staging/lustre/lustre/include/linux/lvfs.h
@@ -64,10 +64,6 @@ struct lvfs_ucred {
struct md_identity *luc_identity;
};
-struct lvfs_callback_ops {
- struct dentry *(*l_fid2dentry)(__u64 id_ino, __u32 gen, __u64 gr, void *data);
-};
-
#define OBD_RUN_CTXT_MAGIC 0xC0FFEEAA
#define OBD_CTXT_DEBUG /* development-only debugging */
struct lvfs_run_ctxt {
@@ -76,7 +72,6 @@ struct lvfs_run_ctxt {
mm_segment_t fs;
struct lvfs_ucred luc;
int ngroups;
- struct lvfs_callback_ops cb_ops;
struct group_info *group_info;
struct dt_device *dt;
#ifdef OBD_CTXT_DEBUG
diff --git a/drivers/staging/lustre/lustre/include/lustre_log.h b/drivers/staging/lustre/lustre/include/lustre_log.h
index 896c757..d45a27f 100644
--- a/drivers/staging/lustre/lustre/include/lustre_log.h
+++ b/drivers/staging/lustre/lustre/include/lustre_log.h
@@ -309,7 +309,6 @@ struct llog_handle {
spinlock_t lgh_hdr_lock; /* protect lgh_hdr data */
struct llog_logid lgh_id; /* id of this log */
struct llog_log_hdr *lgh_hdr;
- struct file *lgh_file;
struct dt_object *lgh_obj;
int lgh_last_idx;
int lgh_cur_idx; /* used during llog_process */
@@ -325,9 +324,6 @@ struct llog_handle {
atomic_t lgh_refcount;
};
-/* llog_lvfs.c */
-extern struct llog_operations llog_lvfs_ops;
-
/* llog_osd.c */
extern struct llog_operations llog_osd_ops;
int llog_osd_get_cat_list(const struct lu_env *env, struct dt_device *d,
diff --git a/drivers/staging/lustre/lustre/include/obd_class.h b/drivers/staging/lustre/lustre/include/obd_class.h
index 1c2ba19..8cb7cdf 100644
--- a/drivers/staging/lustre/lustre/include/obd_class.h
+++ b/drivers/staging/lustre/lustre/include/obd_class.h
@@ -1141,16 +1141,6 @@ static inline int obd_extent_calc(struct obd_export *exp,
return rc;
}
-static inline struct dentry *
-obd_lvfs_fid2dentry(struct obd_export *exp, struct ost_id *oi, __u32 gen)
-{
- struct lvfs_run_ctxt *ctxt = &exp->exp_obd->obd_lvfs_ctxt;
- LASSERT(exp->exp_obd);
-
- return ctxt->cb_ops.l_fid2dentry(ostid_id(oi), gen, ostid_seq(oi),
- exp->exp_obd);
-}
-
/* @max_age is the oldest time in jiffies that we accept using a cached data.
* If the cache is older than @max_age we will get a new value from the
* target. Use a value of "cfs_time_current() + HZ" to guarantee freshness. */
diff --git a/drivers/staging/lustre/lustre/lvfs/fsfilt_ext3.c b/drivers/staging/lustre/lustre/lvfs/fsfilt_ext3.c
deleted file mode 100644
index ee75994..0000000
--- a/drivers/staging/lustre/lustre/lvfs/fsfilt_ext3.c
+++ /dev/null
@@ -1,760 +0,0 @@
-/*
- * GPL HEADER START
- *
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 only,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License version 2 for more details (a copy is included
- * in the LICENSE file that accompanied this code).
- *
- * You should have received a copy of the GNU General Public License
- * version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
- *
- * GPL HEADER END
- */
-/*
- * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
- * Use is subject to license terms.
- *
- * Copyright (c) 2011, 2012, Intel Corporation.
- */
-/*
- * This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
- *
- * lustre/lvfs/fsfilt_ext3.c
- *
- * Author: Andreas Dilger <adilger@...sterfs.com>
- */
-
-#define DEBUG_SUBSYSTEM S_FILTER
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/fs.h>
-#include <linux/slab.h>
-#include <linux/pagemap.h>
-#include <ldiskfs/ldiskfs_config.h>
-#include <ext4/ext4.h>
-#include <ext4/ext4_jbd2.h>
-#include <linux/bitops.h>
-#include <linux/quota.h>
-
-#include <linux/libcfs/libcfs.h>
-#include <lustre_fsfilt.h>
-#include <obd.h>
-#include <linux/lustre_compat25.h>
-#include <linux/lprocfs_status.h>
-
-#include <ext4/ext4_extents.h>
-
-#ifdef HAVE_EXT_PBLOCK /* Name changed to ext4_ext_pblock for kernel 2.6.35 */
-#define ext3_ext_pblock(ex) ext_pblock((ex))
-#endif
-
-/* for kernels 2.6.18 and later */
-#define FSFILT_SINGLEDATA_TRANS_BLOCKS(sb) EXT3_SINGLEDATA_TRANS_BLOCKS(sb)
-
-#define fsfilt_ext3_ext_insert_extent(handle, inode, path, newext, flag) \
- ext3_ext_insert_extent(handle, inode, path, newext, flag)
-
-#define ext3_mb_discard_inode_preallocations(inode) \
- ext3_discard_preallocations(inode)
-
-#define fsfilt_log_start_commit(journal, tid) jbd2_log_start_commit(journal, tid)
-#define fsfilt_log_wait_commit(journal, tid) jbd2_log_wait_commit(journal, tid)
-
-static struct kmem_cache *fcb_cache;
-
-struct fsfilt_cb_data {
- struct ext4_journal_cb_entry cb_jcb; /* private data - MUST BE FIRST */
- fsfilt_cb_t cb_func; /* MDS/OBD completion function */
- struct obd_device *cb_obd; /* MDS/OBD completion device */
- __u64 cb_last_rcvd; /* MDS/OST last committed operation */
- void *cb_data; /* MDS/OST completion function data */
-};
-
-static char *fsfilt_ext3_get_label(struct super_block *sb)
-{
- return EXT3_SB(sb)->s_es->s_volume_name;
-}
-
-/* kernel has ext4_blocks_for_truncate since linux-3.1.1 */
-# include <ext4/truncate.h>
-
-/*
- * We don't currently need any additional blocks for rmdir and
- * unlink transactions because we are storing the OST oa_id inside
- * the inode (which we will be changing anyways as part of this
- * transaction).
- */
-static void *fsfilt_ext3_start(struct inode *inode, int op, void *desc_private,
- int logs)
-{
- /* For updates to the last received file */
- int nblocks = FSFILT_SINGLEDATA_TRANS_BLOCKS(inode->i_sb);
- journal_t *journal;
- void *handle;
-
- if (current->journal_info) {
- CDEBUG(D_INODE, "increasing refcount on %p\n",
- current->journal_info);
- goto journal_start;
- }
-
- switch(op) {
- case FSFILT_OP_UNLINK:
- /* delete one file + create/update logs for each stripe */
- nblocks += EXT3_DELETE_TRANS_BLOCKS(inode->i_sb);
- nblocks += (EXT3_INDEX_EXTRA_TRANS_BLOCKS +
- FSFILT_SINGLEDATA_TRANS_BLOCKS(inode->i_sb)) * logs;
- break;
- case FSFILT_OP_CANCEL_UNLINK:
- LASSERT(logs == 1);
-
- /* blocks for log header bitmap update OR
- * blocks for catalog header bitmap update + unlink of logs +
- * blocks for delete the inode (include blocks truncating). */
- nblocks = (LLOG_CHUNK_SIZE >> inode->i_blkbits) +
- EXT3_DELETE_TRANS_BLOCKS(inode->i_sb) +
- ext4_blocks_for_truncate(inode) + 3;
- break;
- default: CERROR("unknown transaction start op %d\n", op);
- LBUG();
- }
-
- LASSERT(current->journal_info == desc_private);
- journal = EXT3_SB(inode->i_sb)->s_journal;
- if (nblocks > journal->j_max_transaction_buffers) {
- CWARN("too many credits %d for op %ux%u using %d instead\n",
- nblocks, op, logs, journal->j_max_transaction_buffers);
- nblocks = journal->j_max_transaction_buffers;
- }
-
- journal_start:
- LASSERTF(nblocks > 0, "can't start %d credit transaction\n", nblocks);
- handle = ext3_journal_start(inode, nblocks);
-
- if (!IS_ERR(handle))
- LASSERT(current->journal_info == handle);
- else
- CERROR("error starting handle for op %u (%u credits): rc %ld\n",
- op, nblocks, PTR_ERR(handle));
- return handle;
-}
-
-static int fsfilt_ext3_commit(struct inode *inode, void *h, int force_sync)
-{
- int rc;
- handle_t *handle = h;
-
- LASSERT(current->journal_info == handle);
- if (force_sync)
- handle->h_sync = 1; /* recovery likes this */
-
- rc = ext3_journal_stop(handle);
-
- return rc;
-}
-
-#ifndef EXT3_EXTENTS_FL
-#define EXT3_EXTENTS_FL 0x00080000 /* Inode uses extents */
-#endif
-
-#ifndef EXT_ASSERT
-#define EXT_ASSERT(cond) BUG_ON(!(cond))
-#endif
-
-#define EXT_GENERATION(inode) (EXT4_I(inode)->i_ext_generation)
-#define ext3_ext_base inode
-#define ext3_ext_base2inode(inode) (inode)
-#define EXT_DEPTH(inode) ext_depth(inode)
-#define fsfilt_ext3_ext_walk_space(inode, block, num, cb, cbdata) \
- ext3_ext_walk_space(inode, block, num, cb, cbdata);
-
-struct bpointers {
- unsigned long *blocks;
- unsigned long start;
- int num;
- int init_num;
- int create;
-};
-
-static long ext3_ext_find_goal(struct inode *inode, struct ext3_ext_path *path,
- unsigned long block, int *aflags)
-{
- struct ext3_inode_info *ei = EXT3_I(inode);
- unsigned long bg_start;
- unsigned long colour;
- int depth;
-
- if (path) {
- struct ext3_extent *ex;
- depth = path->p_depth;
-
- /* try to predict block placement */
- if ((ex = path[depth].p_ext))
- return ext4_ext_pblock(ex) + (block - le32_to_cpu(ex->ee_block));
-
- /* it looks index is empty
- * try to find starting from index itself */
- if (path[depth].p_bh)
- return path[depth].p_bh->b_blocknr;
- }
-
- /* OK. use inode's group */
- bg_start = (ei->i_block_group * EXT3_BLOCKS_PER_GROUP(inode->i_sb)) +
- le32_to_cpu(EXT3_SB(inode->i_sb)->s_es->s_first_data_block);
- colour = (current->pid % 16) *
- (EXT3_BLOCKS_PER_GROUP(inode->i_sb) / 16);
- return bg_start + colour + block;
-}
-
-#define ll_unmap_underlying_metadata(sb, blocknr) \
- unmap_underlying_metadata((sb)->s_bdev, blocknr)
-
-#ifndef EXT3_MB_HINT_GROUP_ALLOC
-static unsigned long new_blocks(handle_t *handle, struct ext3_ext_base *base,
- struct ext3_ext_path *path, unsigned long block,
- unsigned long *count, int *err)
-{
- unsigned long pblock, goal;
- int aflags = 0;
- struct inode *inode = ext3_ext_base2inode(base);
-
- goal = ext3_ext_find_goal(inode, path, block, &aflags);
- aflags |= 2; /* block have been already reserved */
- pblock = ext3_mb_new_blocks(handle, inode, goal, count, aflags, err);
- return pblock;
-
-}
-#else
-static unsigned long new_blocks(handle_t *handle, struct ext3_ext_base *base,
- struct ext3_ext_path *path, unsigned long block,
- unsigned long *count, int *err)
-{
- struct inode *inode = ext3_ext_base2inode(base);
- struct ext3_allocation_request ar;
- unsigned long pblock;
- int aflags;
-
- /* find neighbour allocated blocks */
- ar.lleft = block;
- *err = ext3_ext_search_left(base, path, &ar.lleft, &ar.pleft);
- if (*err)
- return 0;
- ar.lright = block;
- *err = ext3_ext_search_right(base, path, &ar.lright, &ar.pright);
- if (*err)
- return 0;
-
- /* allocate new block */
- ar.goal = ext3_ext_find_goal(inode, path, block, &aflags);
- ar.inode = inode;
- ar.logical = block;
- ar.len = *count;
- ar.flags = EXT3_MB_HINT_DATA;
- pblock = ext3_mb_new_blocks(handle, &ar, err);
- *count = ar.len;
- return pblock;
-}
-#endif
-
-static int ext3_ext_new_extent_cb(struct ext3_ext_base *base,
- struct ext3_ext_path *path,
- struct ext3_ext_cache *cex,
-#ifdef HAVE_EXT_PREPARE_CB_EXTENT
- struct ext3_extent *ex,
-#endif
- void *cbdata)
-{
- struct bpointers *bp = cbdata;
- struct inode *inode = ext3_ext_base2inode(base);
- struct ext3_extent nex;
- unsigned long pblock;
- unsigned long tgen;
- int err, i;
- unsigned long count;
- handle_t *handle;
-
-#ifdef EXT3_EXT_CACHE_EXTENT
- if (cex->ec_type == EXT3_EXT_CACHE_EXTENT)
-#else
- if ((cex->ec_len != 0) && (cex->ec_start != 0))
-#endif
- {
- err = EXT_CONTINUE;
- goto map;
- }
-
- if (bp->create == 0) {
- i = 0;
- if (cex->ec_block < bp->start)
- i = bp->start - cex->ec_block;
- if (i >= cex->ec_len)
- CERROR("nothing to do?! i = %d, e_num = %u\n",
- i, cex->ec_len);
- for (; i < cex->ec_len && bp->num; i++) {
- *(bp->blocks) = 0;
- bp->blocks++;
- bp->num--;
- bp->start++;
- }
-
- return EXT_CONTINUE;
- }
-
- tgen = EXT_GENERATION(base);
- count = ext3_ext_calc_credits_for_insert(base, path);
-
- handle = ext3_journal_start(inode, count+EXT3_ALLOC_NEEDED+1);
- if (IS_ERR(handle)) {
- return PTR_ERR(handle);
- }
-
- if (tgen != EXT_GENERATION(base)) {
- /* the tree has changed. so path can be invalid at moment */
- ext3_journal_stop(handle);
- return EXT_REPEAT;
- }
-
- /* In 2.6.32 kernel, ext4_ext_walk_space()'s callback func is not
- * protected by i_data_sem as whole. so we patch it to store
- * generation to path and now verify the tree hasn't changed */
- down_write((&EXT4_I(inode)->i_data_sem));
-
- /* validate extent, make sure the extent tree does not changed */
- if (EXT_GENERATION(base) != path[0].p_generation) {
- /* cex is invalid, try again */
- up_write(&EXT4_I(inode)->i_data_sem);
- ext3_journal_stop(handle);
- return EXT_REPEAT;
- }
-
- count = cex->ec_len;
- pblock = new_blocks(handle, base, path, cex->ec_block, &count, &err);
- if (!pblock)
- goto out;
- EXT_ASSERT(count <= cex->ec_len);
-
- /* insert new extent */
- nex.ee_block = cpu_to_le32(cex->ec_block);
- ext3_ext_store_pblock(&nex, pblock);
- nex.ee_len = cpu_to_le16(count);
- err = fsfilt_ext3_ext_insert_extent(handle, base, path, &nex, 0);
- if (err) {
- /* free data blocks we just allocated */
- /* not a good idea to call discard here directly,
- * but otherwise we'd need to call it every free() */
-#ifdef EXT3_MB_HINT_GROUP_ALLOC
- ext3_mb_discard_inode_preallocations(inode);
-#endif
-#ifdef HAVE_EXT_FREE_BLOCK_WITH_BUFFER_HEAD /* Introduced in 2.6.32-rc7 */
- ext3_free_blocks(handle, inode, NULL, ext4_ext_pblock(&nex),
- cpu_to_le16(nex.ee_len), 0);
-#else
- ext3_free_blocks(handle, inode, ext4_ext_pblock(&nex),
- cpu_to_le16(nex.ee_len), 0);
-#endif
- goto out;
- }
-
- /*
- * Putting len of the actual extent we just inserted,
- * we are asking ext3_ext_walk_space() to continue
- * scaning after that block
- */
- cex->ec_len = le16_to_cpu(nex.ee_len);
- cex->ec_start = ext4_ext_pblock(&nex);
- BUG_ON(le16_to_cpu(nex.ee_len) == 0);
- BUG_ON(le32_to_cpu(nex.ee_block) != cex->ec_block);
-
-out:
- up_write((&EXT4_I(inode)->i_data_sem));
- ext3_journal_stop(handle);
-map:
- if (err >= 0) {
- /* map blocks */
- if (bp->num == 0) {
- CERROR("hmm. why do we find this extent?\n");
- CERROR("initial space: %lu:%u\n",
- bp->start, bp->init_num);
-#ifdef EXT3_EXT_CACHE_EXTENT
- CERROR("current extent: %u/%u/%llu %d\n",
- cex->ec_block, cex->ec_len,
- (unsigned long long)cex->ec_start,
- cex->ec_type);
-#else
- CERROR("current extent: %u/%u/%llu\n",
- cex->ec_block, cex->ec_len,
- (unsigned long long)cex->ec_start);
-#endif
- }
- i = 0;
- if (cex->ec_block < bp->start)
- i = bp->start - cex->ec_block;
- if (i >= cex->ec_len)
- CERROR("nothing to do?! i = %d, e_num = %u\n",
- i, cex->ec_len);
- for (; i < cex->ec_len && bp->num; i++) {
- *(bp->blocks) = cex->ec_start + i;
-#ifdef EXT3_EXT_CACHE_EXTENT
- if (cex->ec_type != EXT3_EXT_CACHE_EXTENT)
-#else
- if ((cex->ec_len == 0) || (cex->ec_start == 0))
-#endif
- {
- /* unmap any possible underlying metadata from
- * the block device mapping. bug 6998. */
- ll_unmap_underlying_metadata(inode->i_sb,
- *(bp->blocks));
- }
- bp->blocks++;
- bp->num--;
- bp->start++;
- }
- }
- return err;
-}
-
-int fsfilt_map_nblocks(struct inode *inode, unsigned long block,
- unsigned long num, unsigned long *blocks,
- int create)
-{
- struct ext3_ext_base *base = inode;
- struct bpointers bp;
- int err;
-
- CDEBUG(D_OTHER, "blocks %lu-%lu requested for inode %u\n",
- block, block + num - 1, (unsigned) inode->i_ino);
-
- bp.blocks = blocks;
- bp.start = block;
- bp.init_num = bp.num = num;
- bp.create = create;
-
- err = fsfilt_ext3_ext_walk_space(base, block, num,
- ext3_ext_new_extent_cb, &bp);
- ext3_ext_invalidate_cache(base);
-
- return err;
-}
-
-int fsfilt_ext3_map_ext_inode_pages(struct inode *inode, struct page **page,
- int pages, unsigned long *blocks,
- int create)
-{
- int blocks_per_page = PAGE_CACHE_SIZE >> inode->i_blkbits;
- int rc = 0, i = 0;
- struct page *fp = NULL;
- int clen = 0;
-
- CDEBUG(D_OTHER, "inode %lu: map %d pages from %lu\n",
- inode->i_ino, pages, (*page)->index);
-
- /* pages are sorted already. so, we just have to find
- * contig. space and process them properly */
- while (i < pages) {
- if (fp == NULL) {
- /* start new extent */
- fp = *page++;
- clen = 1;
- i++;
- continue;
- } else if (fp->index + clen == (*page)->index) {
- /* continue the extent */
- page++;
- clen++;
- i++;
- continue;
- }
-
- /* process found extent */
- rc = fsfilt_map_nblocks(inode, fp->index * blocks_per_page,
- clen * blocks_per_page, blocks,
- create);
- if (rc)
- GOTO(cleanup, rc);
-
- /* look for next extent */
- fp = NULL;
- blocks += blocks_per_page * clen;
- }
-
- if (fp)
- rc = fsfilt_map_nblocks(inode, fp->index * blocks_per_page,
- clen * blocks_per_page, blocks,
- create);
-cleanup:
- return rc;
-}
-
-int fsfilt_ext3_map_bm_inode_pages(struct inode *inode, struct page **page,
- int pages, unsigned long *blocks,
- int create)
-{
- int blocks_per_page = PAGE_CACHE_SIZE >> inode->i_blkbits;
- unsigned long *b;
- int rc = 0, i;
-
- for (i = 0, b = blocks; i < pages; i++, page++) {
- rc = ext3_map_inode_page(inode, *page, b, create);
- if (rc) {
- CERROR("ino %lu, blk %lu create %d: rc %d\n",
- inode->i_ino, *b, create, rc);
- break;
- }
-
- b += blocks_per_page;
- }
- return rc;
-}
-
-int fsfilt_ext3_map_inode_pages(struct inode *inode, struct page **page,
- int pages, unsigned long *blocks,
- int create, struct mutex *optional_mutex)
-{
- int rc;
-
- if (EXT3_I(inode)->i_flags & EXT3_EXTENTS_FL) {
- rc = fsfilt_ext3_map_ext_inode_pages(inode, page, pages,
- blocks, create);
- return rc;
- }
- if (optional_mutex != NULL)
- mutex_lock(optional_mutex);
- rc = fsfilt_ext3_map_bm_inode_pages(inode, page, pages, blocks, create);
- if (optional_mutex != NULL)
- mutex_unlock(optional_mutex);
-
- return rc;
-}
-
-int fsfilt_ext3_read(struct inode *inode, void *buf, int size, loff_t *offs)
-{
- unsigned long block;
- struct buffer_head *bh;
- int err, blocksize, csize, boffs, osize = size;
-
- /* prevent reading after eof */
- spin_lock(&inode->i_lock);
- if (i_size_read(inode) < *offs + size) {
- size = i_size_read(inode) - *offs;
- spin_unlock(&inode->i_lock);
- if (size < 0) {
- CDEBUG(D_EXT2, "size %llu is too short for read @%llu\n",
- i_size_read(inode), *offs);
- return -EBADR;
- } else if (size == 0) {
- return 0;
- }
- } else {
- spin_unlock(&inode->i_lock);
- }
-
- blocksize = 1 << inode->i_blkbits;
-
- while (size > 0) {
- block = *offs >> inode->i_blkbits;
- boffs = *offs & (blocksize - 1);
- csize = min(blocksize - boffs, size);
- bh = ext3_bread(NULL, inode, block, 0, &err);
- if (!bh) {
- CERROR("can't read block: %d\n", err);
- return err;
- }
-
- memcpy(buf, bh->b_data + boffs, csize);
- brelse(bh);
-
- *offs += csize;
- buf += csize;
- size -= csize;
- }
- return osize;
-}
-EXPORT_SYMBOL(fsfilt_ext3_read);
-
-static int fsfilt_ext3_read_record(struct file * file, void *buf,
- int size, loff_t *offs)
-{
- int rc;
- rc = fsfilt_ext3_read(file->f_dentry->d_inode, buf, size, offs);
- if (rc > 0)
- rc = 0;
- return rc;
-}
-
-int fsfilt_ext3_write_handle(struct inode *inode, void *buf, int bufsize,
- loff_t *offs, handle_t *handle)
-{
- struct buffer_head *bh = NULL;
- loff_t old_size = i_size_read(inode), offset = *offs;
- loff_t new_size = i_size_read(inode);
- unsigned long block;
- int err = 0, blocksize = 1 << inode->i_blkbits, size, boffs;
-
- while (bufsize > 0) {
- if (bh != NULL)
- brelse(bh);
-
- block = offset >> inode->i_blkbits;
- boffs = offset & (blocksize - 1);
- size = min(blocksize - boffs, bufsize);
- bh = ext3_bread(handle, inode, block, 1, &err);
- if (!bh) {
- CERROR("can't read/create block: %d\n", err);
- break;
- }
-
- err = ext3_journal_get_write_access(handle, bh);
- if (err) {
- CERROR("journal_get_write_access() returned error %d\n",
- err);
- break;
- }
- LASSERT(bh->b_data + boffs + size <= bh->b_data + bh->b_size);
- memcpy(bh->b_data + boffs, buf, size);
- err = ext3_journal_dirty_metadata(handle, bh);
- if (err) {
- CERROR("journal_dirty_metadata() returned error %d\n",
- err);
- break;
- }
- if (offset + size > new_size)
- new_size = offset + size;
- offset += size;
- bufsize -= size;
- buf += size;
- }
- if (bh)
- brelse(bh);
-
- /* correct in-core and on-disk sizes */
- if (new_size > i_size_read(inode)) {
- spin_lock(&inode->i_lock);
- if (new_size > i_size_read(inode))
- i_size_write(inode, new_size);
- if (i_size_read(inode) > EXT3_I(inode)->i_disksize)
- EXT3_I(inode)->i_disksize = i_size_read(inode);
- if (i_size_read(inode) > old_size) {
- spin_unlock(&inode->i_lock);
- mark_inode_dirty(inode);
- } else {
- spin_unlock(&inode->i_lock);
- }
- }
-
- if (err == 0)
- *offs = offset;
- return err;
-}
-EXPORT_SYMBOL(fsfilt_ext3_write_handle);
-
-static int fsfilt_ext3_write_record(struct file *file, void *buf, int bufsize,
- loff_t *offs, int force_sync)
-{
- struct inode *inode = file->f_dentry->d_inode;
- handle_t *handle;
- int err, block_count = 0, blocksize;
-
- /* Determine how many transaction credits are needed */
- blocksize = 1 << inode->i_blkbits;
- block_count = (*offs & (blocksize - 1)) + bufsize;
- block_count = (block_count + blocksize - 1) >> inode->i_blkbits;
-
- handle = ext3_journal_start(inode,
- block_count * EXT3_DATA_TRANS_BLOCKS(inode->i_sb) + 2);
- if (IS_ERR(handle)) {
- CERROR("can't start transaction for %d blocks (%d bytes)\n",
- block_count * EXT3_DATA_TRANS_BLOCKS(inode->i_sb) + 2,
- bufsize);
- return PTR_ERR(handle);
- }
-
- err = fsfilt_ext3_write_handle(inode, buf, bufsize, offs, handle);
-
- if (!err && force_sync)
- handle->h_sync = 1; /* recovery likes this */
-
- ext3_journal_stop(handle);
-
- return err;
-}
-
-static int fsfilt_ext3_setup(struct super_block *sb)
-{
- if (!EXT3_HAS_COMPAT_FEATURE(sb,
- EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
- CERROR("ext3 mounted without journal\n");
- return -EINVAL;
- }
-
-#ifdef S_PDIROPS
- CWARN("Enabling PDIROPS\n");
- set_opt(EXT3_SB(sb)->s_mount_opt, PDIROPS);
- sb->s_flags |= S_PDIROPS;
-#endif
- if (!EXT3_HAS_COMPAT_FEATURE(sb, EXT3_FEATURE_COMPAT_DIR_INDEX))
- CWARN("filesystem doesn't have dir_index feature enabled\n");
- return 0;
-}
-static struct fsfilt_operations fsfilt_ext3_ops = {
- .fs_type = "ext3",
- .fs_owner = THIS_MODULE,
- .fs_getlabel = fsfilt_ext3_get_label,
- .fs_start = fsfilt_ext3_start,
- .fs_commit = fsfilt_ext3_commit,
- .fs_map_inode_pages = fsfilt_ext3_map_inode_pages,
- .fs_write_record = fsfilt_ext3_write_record,
- .fs_read_record = fsfilt_ext3_read_record,
- .fs_setup = fsfilt_ext3_setup,
-};
-
-static int __init fsfilt_ext3_init(void)
-{
- int rc;
-
- fcb_cache = kmem_cache_create("fsfilt_ext3_fcb",
- sizeof(struct fsfilt_cb_data), 0, 0);
- if (!fcb_cache) {
- CERROR("error allocating fsfilt journal callback cache\n");
- GOTO(out, rc = -ENOMEM);
- }
-
- rc = fsfilt_register_ops(&fsfilt_ext3_ops);
-
- if (rc) {
- int err = kmem_cache_destroy(fcb_cache);
- LASSERTF(err == 0, "error destroying new cache: rc %d\n", err);
- }
-out:
- return rc;
-}
-
-static void __exit fsfilt_ext3_exit(void)
-{
- int rc;
-
- fsfilt_unregister_ops(&fsfilt_ext3_ops);
- rc = kmem_cache_destroy(fcb_cache);
- LASSERTF(rc == 0, "couldn't destroy fcb_cache slab\n");
-}
-
-module_init(fsfilt_ext3_init);
-module_exit(fsfilt_ext3_exit);
-
-MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
-MODULE_DESCRIPTION("Lustre ext3 Filesystem Helper v0.1");
-MODULE_LICENSE("GPL");
diff --git a/drivers/staging/lustre/lustre/obdclass/llog_cat.c b/drivers/staging/lustre/lustre/obdclass/llog_cat.c
index c0f3af7..c813a88 100644
--- a/drivers/staging/lustre/lustre/obdclass/llog_cat.c
+++ b/drivers/staging/lustre/lustre/obdclass/llog_cat.c
@@ -444,31 +444,23 @@ int llog_cat_add(const struct lu_env *env, struct llog_handle *cathandle,
LASSERT(ctxt);
LASSERT(ctxt->loc_exp);
- if (cathandle->lgh_obj != NULL) {
- dt = ctxt->loc_exp->exp_obd->obd_lvfs_ctxt.dt;
- LASSERT(dt);
+ LASSERT(cathandle->lgh_obj != NULL);
+ dt = lu2dt_dev(cathandle->lgh_obj->do_lu.lo_dev);
- th = dt_trans_create(env, dt);
- if (IS_ERR(th))
- return PTR_ERR(th);
+ th = dt_trans_create(env, dt);
+ if (IS_ERR(th))
+ return PTR_ERR(th);
- rc = llog_cat_declare_add_rec(env, cathandle, rec, th);
- if (rc)
- GOTO(out_trans, rc);
+ rc = llog_cat_declare_add_rec(env, cathandle, rec, th);
+ if (rc)
+ GOTO(out_trans, rc);
- rc = dt_trans_start_local(env, dt, th);
- if (rc)
- GOTO(out_trans, rc);
- rc = llog_cat_add_rec(env, cathandle, rec, reccookie, buf, th);
+ rc = dt_trans_start_local(env, dt, th);
+ if (rc)
+ GOTO(out_trans, rc);
+ rc = llog_cat_add_rec(env, cathandle, rec, reccookie, buf, th);
out_trans:
- dt_trans_stop(env, dt, th);
- } else { /* lvfs compat code */
- LASSERT(cathandle->lgh_file != NULL);
- rc = llog_cat_declare_add_rec(env, cathandle, rec, th);
- if (rc == 0)
- rc = llog_cat_add_rec(env, cathandle, rec, reccookie,
- buf, th);
- }
+ dt_trans_stop(env, dt, th);
return rc;
}
EXPORT_SYMBOL(llog_cat_add);
diff --git a/drivers/staging/lustre/lustre/obdclass/llog_lvfs.c b/drivers/staging/lustre/lustre/obdclass/llog_lvfs.c
deleted file mode 100644
index 5385d8e..0000000
--- a/drivers/staging/lustre/lustre/obdclass/llog_lvfs.c
+++ /dev/null
@@ -1,847 +0,0 @@
-/*
- * GPL HEADER START
- *
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 only,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License version 2 for more details (a copy is included
- * in the LICENSE file that accompanied this code).
- *
- * You should have received a copy of the GNU General Public License
- * version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
- *
- * GPL HEADER END
- */
-/*
- * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
- * Use is subject to license terms.
- *
- * Copyright (c) 2011, 2012, Intel Corporation.
- */
-/*
- * This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
- *
- * lustre/obdclass/llog_lvfs.c
- *
- * OST<->MDS recovery logging infrastructure.
- * Invariants in implementation:
- * - we do not share logs among different OST<->MDS connections, so that
- * if an OST or MDS fails it need only look at log(s) relevant to itself
- *
- * Author: Andreas Dilger <adilger@...sterfs.com>
- */
-
-#define DEBUG_SUBSYSTEM S_LOG
-
-
-#include <obd.h>
-#include <obd_class.h>
-#include <lustre_log.h>
-#include <obd_ost.h>
-#include <linux/list.h>
-#include <lvfs.h>
-#include <lustre_fsfilt.h>
-#include <lustre_disk.h>
-#include "llog_internal.h"
-
-#if defined(LLOG_LVFS)
-
-static int llog_lvfs_pad(struct obd_device *obd, struct l_file *file,
- int len, int index)
-{
- struct llog_rec_hdr rec = { 0 };
- struct llog_rec_tail tail;
- int rc;
-
- LASSERT(len >= LLOG_MIN_REC_SIZE && (len & 0x7) == 0);
-
- tail.lrt_len = rec.lrh_len = len;
- tail.lrt_index = rec.lrh_index = index;
- rec.lrh_type = LLOG_PAD_MAGIC;
-
- rc = fsfilt_write_record(obd, file, &rec, sizeof(rec), &file->f_pos, 0);
- if (rc) {
- CERROR("error writing padding record: rc %d\n", rc);
- goto out;
- }
-
- file->f_pos += len - sizeof(rec) - sizeof(tail);
- rc = fsfilt_write_record(obd, file, &tail, sizeof(tail),&file->f_pos,0);
- if (rc) {
- CERROR("error writing padding record: rc %d\n", rc);
- goto out;
- }
-
- out:
- return rc;
-}
-
-static int llog_lvfs_write_blob(struct obd_device *obd, struct l_file *file,
- struct llog_rec_hdr *rec, void *buf, loff_t off)
-{
- int rc;
- struct llog_rec_tail end;
- loff_t saved_off = file->f_pos;
- int buflen = rec->lrh_len;
-
- file->f_pos = off;
-
- if (buflen == 0)
- CWARN("0-length record\n");
-
- if (!buf) {
- rc = fsfilt_write_record(obd, file, rec, buflen,&file->f_pos,0);
- if (rc) {
- CERROR("error writing log record: rc %d\n", rc);
- goto out;
- }
- GOTO(out, rc = 0);
- }
-
- /* the buf case */
- rec->lrh_len = sizeof(*rec) + buflen + sizeof(end);
- rc = fsfilt_write_record(obd, file, rec, sizeof(*rec), &file->f_pos, 0);
- if (rc) {
- CERROR("error writing log hdr: rc %d\n", rc);
- goto out;
- }
-
- rc = fsfilt_write_record(obd, file, buf, buflen, &file->f_pos, 0);
- if (rc) {
- CERROR("error writing log buffer: rc %d\n", rc);
- goto out;
- }
-
- end.lrt_len = rec->lrh_len;
- end.lrt_index = rec->lrh_index;
- rc = fsfilt_write_record(obd, file, &end, sizeof(end), &file->f_pos, 0);
- if (rc) {
- CERROR("error writing log tail: rc %d\n", rc);
- goto out;
- }
-
- rc = 0;
- out:
- if (saved_off > file->f_pos)
- file->f_pos = saved_off;
- LASSERT(rc <= 0);
- return rc;
-}
-
-static int llog_lvfs_read_blob(struct obd_device *obd, struct l_file *file,
- void *buf, int size, loff_t off)
-{
- loff_t offset = off;
- int rc;
-
- rc = fsfilt_read_record(obd, file, buf, size, &offset);
- if (rc) {
- CERROR("error reading log record: rc %d\n", rc);
- return rc;
- }
- return 0;
-}
-
-static int llog_lvfs_read_header(const struct lu_env *env,
- struct llog_handle *handle)
-{
- struct obd_device *obd;
- int rc;
-
- LASSERT(sizeof(*handle->lgh_hdr) == LLOG_CHUNK_SIZE);
-
- obd = handle->lgh_ctxt->loc_exp->exp_obd;
-
- if (i_size_read(handle->lgh_file->f_dentry->d_inode) == 0) {
- CDEBUG(D_HA, "not reading header from 0-byte log\n");
- return LLOG_EEMPTY;
- }
-
- rc = llog_lvfs_read_blob(obd, handle->lgh_file, handle->lgh_hdr,
- LLOG_CHUNK_SIZE, 0);
- if (rc) {
- CERROR("error reading log header from %.*s\n",
- handle->lgh_file->f_dentry->d_name.len,
- handle->lgh_file->f_dentry->d_name.name);
- } else {
- struct llog_rec_hdr *llh_hdr = &handle->lgh_hdr->llh_hdr;
-
- if (LLOG_REC_HDR_NEEDS_SWABBING(llh_hdr))
- lustre_swab_llog_hdr(handle->lgh_hdr);
-
- if (llh_hdr->lrh_type != LLOG_HDR_MAGIC) {
- CERROR("bad log %.*s header magic: %#x (expected %#x)\n",
- handle->lgh_file->f_dentry->d_name.len,
- handle->lgh_file->f_dentry->d_name.name,
- llh_hdr->lrh_type, LLOG_HDR_MAGIC);
- rc = -EIO;
- } else if (llh_hdr->lrh_len != LLOG_CHUNK_SIZE) {
- CERROR("incorrectly sized log %.*s header: %#x "
- "(expected %#x)\n",
- handle->lgh_file->f_dentry->d_name.len,
- handle->lgh_file->f_dentry->d_name.name,
- llh_hdr->lrh_len, LLOG_CHUNK_SIZE);
- CERROR("you may need to re-run lconf --write_conf.\n");
- rc = -EIO;
- }
- }
-
- handle->lgh_last_idx = handle->lgh_hdr->llh_tail.lrt_index;
- handle->lgh_file->f_pos = i_size_read(handle->lgh_file->f_dentry->d_inode);
-
- return rc;
-}
-
-/* returns negative in on error; 0 if success && reccookie == 0; 1 otherwise */
-/* appends if idx == -1, otherwise overwrites record idx. */
-static int llog_lvfs_write_rec(const struct lu_env *env,
- struct llog_handle *loghandle,
- struct llog_rec_hdr *rec,
- struct llog_cookie *reccookie, int cookiecount,
- void *buf, int idx, struct thandle *th)
-{
- struct llog_log_hdr *llh;
- int reclen = rec->lrh_len, index, rc;
- struct llog_rec_tail *lrt;
- struct obd_device *obd;
- struct file *file;
- size_t left;
-
- llh = loghandle->lgh_hdr;
- file = loghandle->lgh_file;
- obd = loghandle->lgh_ctxt->loc_exp->exp_obd;
-
- /* record length should not bigger than LLOG_CHUNK_SIZE */
- if (buf)
- rc = (reclen > LLOG_CHUNK_SIZE - sizeof(struct llog_rec_hdr) -
- sizeof(struct llog_rec_tail)) ? -E2BIG : 0;
- else
- rc = (reclen > LLOG_CHUNK_SIZE) ? -E2BIG : 0;
- if (rc)
- return rc;
-
- if (buf)
- /* write_blob adds header and tail to lrh_len. */
- reclen = sizeof(*rec) + rec->lrh_len +
- sizeof(struct llog_rec_tail);
-
- if (idx != -1) {
- loff_t saved_offset;
-
- /* no header: only allowed to insert record 1 */
- if (idx != 1 && !i_size_read(file->f_dentry->d_inode)) {
- CERROR("idx != -1 in empty log\n");
- LBUG();
- }
-
- if (idx && llh->llh_size && llh->llh_size != rec->lrh_len)
- return -EINVAL;
-
- if (!ext2_test_bit(idx, llh->llh_bitmap))
- CERROR("Modify unset record %u\n", idx);
- if (idx != rec->lrh_index)
- CERROR("Index mismatch %d %u\n", idx, rec->lrh_index);
-
- rc = llog_lvfs_write_blob(obd, file, &llh->llh_hdr, NULL, 0);
- /* we are done if we only write the header or on error */
- if (rc || idx == 0)
- return rc;
-
- if (buf) {
- /* We assume that caller has set lgh_cur_* */
- saved_offset = loghandle->lgh_cur_offset;
- CDEBUG(D_OTHER,
- "modify record "DOSTID": idx:%d/%u/%d, len:%u "
- "offset %llu\n",
- POSTID(&loghandle->lgh_id.lgl_oi), idx, rec->lrh_index,
- loghandle->lgh_cur_idx, rec->lrh_len,
- (long long)(saved_offset - sizeof(*llh)));
- if (rec->lrh_index != loghandle->lgh_cur_idx) {
- CERROR("modify idx mismatch %u/%d\n",
- idx, loghandle->lgh_cur_idx);
- return -EFAULT;
- }
- } else {
- /* Assumes constant lrh_len */
- saved_offset = sizeof(*llh) + (idx - 1) * reclen;
- }
-
- rc = llog_lvfs_write_blob(obd, file, rec, buf, saved_offset);
- if (rc == 0 && reccookie) {
- reccookie->lgc_lgl = loghandle->lgh_id;
- reccookie->lgc_index = idx;
- rc = 1;
- }
- return rc;
- }
-
- /* Make sure that records don't cross a chunk boundary, so we can
- * process them page-at-a-time if needed. If it will cross a chunk
- * boundary, write in a fake (but referenced) entry to pad the chunk.
- *
- * We know that llog_current_log() will return a loghandle that is
- * big enough to hold reclen, so all we care about is padding here.
- */
- left = LLOG_CHUNK_SIZE - (file->f_pos & (LLOG_CHUNK_SIZE - 1));
-
- /* NOTE: padding is a record, but no bit is set */
- if (left != 0 && left != reclen &&
- left < (reclen + LLOG_MIN_REC_SIZE)) {
- index = loghandle->lgh_last_idx + 1;
- rc = llog_lvfs_pad(obd, file, left, index);
- if (rc)
- return rc;
- loghandle->lgh_last_idx++; /*for pad rec*/
- }
- /* if it's the last idx in log file, then return -ENOSPC */
- if (loghandle->lgh_last_idx >= LLOG_BITMAP_SIZE(llh) - 1)
- return -ENOSPC;
- loghandle->lgh_last_idx++;
- index = loghandle->lgh_last_idx;
- LASSERT(index < LLOG_BITMAP_SIZE(llh));
- rec->lrh_index = index;
- if (buf == NULL) {
- lrt = (struct llog_rec_tail *)
- ((char *)rec + rec->lrh_len - sizeof(*lrt));
- lrt->lrt_len = rec->lrh_len;
- lrt->lrt_index = rec->lrh_index;
- }
- /*The caller should make sure only 1 process access the lgh_last_idx,
- *Otherwise it might hit the assert.*/
- LASSERT(index < LLOG_BITMAP_SIZE(llh));
- spin_lock(&loghandle->lgh_hdr_lock);
- if (ext2_set_bit(index, llh->llh_bitmap)) {
- CERROR("argh, index %u already set in log bitmap?\n", index);
- spin_unlock(&loghandle->lgh_hdr_lock);
- LBUG(); /* should never happen */
- }
- llh->llh_count++;
- spin_unlock(&loghandle->lgh_hdr_lock);
- llh->llh_tail.lrt_index = index;
-
- rc = llog_lvfs_write_blob(obd, file, &llh->llh_hdr, NULL, 0);
- if (rc)
- return rc;
-
- rc = llog_lvfs_write_blob(obd, file, rec, buf, file->f_pos);
- if (rc)
- return rc;
-
- CDEBUG(D_RPCTRACE, "added record "DOSTID": idx: %u, %u \n",
- POSTID(&loghandle->lgh_id.lgl_oi), index, rec->lrh_len);
- if (rc == 0 && reccookie) {
- reccookie->lgc_lgl = loghandle->lgh_id;
- reccookie->lgc_index = index;
- if ((rec->lrh_type == MDS_UNLINK_REC) ||
- (rec->lrh_type == MDS_SETATTR64_REC))
- reccookie->lgc_subsys = LLOG_MDS_OST_ORIG_CTXT;
- else if (rec->lrh_type == OST_SZ_REC)
- reccookie->lgc_subsys = LLOG_SIZE_ORIG_CTXT;
- else
- reccookie->lgc_subsys = -1;
- rc = 1;
- }
- if (rc == 0 && rec->lrh_type == LLOG_GEN_REC)
- rc = 1;
-
- return rc;
-}
-
-/* We can skip reading at least as many log blocks as the number of
-* minimum sized log records we are skipping. If it turns out
-* that we are not far enough along the log (because the
-* actual records are larger than minimum size) we just skip
-* some more records. */
-
-static void llog_skip_over(__u64 *off, int curr, int goal)
-{
- if (goal <= curr)
- return;
- *off = (*off + (goal-curr-1) * LLOG_MIN_REC_SIZE) &
- ~(LLOG_CHUNK_SIZE - 1);
-}
-
-
-/* sets:
- * - cur_offset to the furthest point read in the log file
- * - cur_idx to the log index preceeding cur_offset
- * returns -EIO/-EINVAL on error
- */
-static int llog_lvfs_next_block(const struct lu_env *env,
- struct llog_handle *loghandle, int *cur_idx,
- int next_idx, __u64 *cur_offset, void *buf,
- int len)
-{
- int rc;
-
- if (len == 0 || len & (LLOG_CHUNK_SIZE - 1))
- return -EINVAL;
-
- CDEBUG(D_OTHER, "looking for log index %u (cur idx %u off "LPU64")\n",
- next_idx, *cur_idx, *cur_offset);
-
- while (*cur_offset < i_size_read(loghandle->lgh_file->f_dentry->d_inode)) {
- struct llog_rec_hdr *rec, *last_rec;
- struct llog_rec_tail *tail;
- loff_t ppos;
- int llen;
-
- llog_skip_over(cur_offset, *cur_idx, next_idx);
-
- /* read up to next LLOG_CHUNK_SIZE block */
- ppos = *cur_offset;
- llen = LLOG_CHUNK_SIZE - (*cur_offset & (LLOG_CHUNK_SIZE - 1));
- rc = fsfilt_read_record(loghandle->lgh_ctxt->loc_exp->exp_obd,
- loghandle->lgh_file, buf, llen,
- cur_offset);
- if (rc < 0) {
- CERROR("Cant read llog block at log id "DOSTID
- "/%u offset "LPU64"\n",
- POSTID(&loghandle->lgh_id.lgl_oi),
- loghandle->lgh_id.lgl_ogen,
- *cur_offset);
- return rc;
- }
-
- /* put number of bytes read into rc to make code simpler */
- rc = *cur_offset - ppos;
- if (rc < len) {
- /* signal the end of the valid buffer to llog_process */
- memset(buf + rc, 0, len - rc);
- }
-
- if (rc == 0) /* end of file, nothing to do */
- return 0;
-
- if (rc < sizeof(*tail)) {
- CERROR("Invalid llog block at log id "DOSTID"/%u offset"
- LPU64"\n", POSTID(&loghandle->lgh_id.lgl_oi),
- loghandle->lgh_id.lgl_ogen, *cur_offset);
- return -EINVAL;
- }
-
- rec = buf;
- if (LLOG_REC_HDR_NEEDS_SWABBING(rec))
- lustre_swab_llog_rec(rec);
-
- tail = (struct llog_rec_tail *)(buf + rc -
- sizeof(struct llog_rec_tail));
-
- /* get the last record in block */
- last_rec = (struct llog_rec_hdr *)(buf + rc -
- le32_to_cpu(tail->lrt_len));
-
- if (LLOG_REC_HDR_NEEDS_SWABBING(last_rec))
- lustre_swab_llog_rec(last_rec);
- LASSERT(last_rec->lrh_index == tail->lrt_index);
-
- *cur_idx = tail->lrt_index;
-
- /* this shouldn't happen */
- if (tail->lrt_index == 0) {
- CERROR("Invalid llog tail at log id "DOSTID"/%u offset "
- LPU64"\n", POSTID(&loghandle->lgh_id.lgl_oi),
- loghandle->lgh_id.lgl_ogen, *cur_offset);
- return -EINVAL;
- }
- if (tail->lrt_index < next_idx)
- continue;
-
- /* sanity check that the start of the new buffer is no farther
- * than the record that we wanted. This shouldn't happen. */
- if (rec->lrh_index > next_idx) {
- CERROR("missed desired record? %u > %u\n",
- rec->lrh_index, next_idx);
- return -ENOENT;
- }
- return 0;
- }
- return -EIO;
-}
-
-static int llog_lvfs_prev_block(const struct lu_env *env,
- struct llog_handle *loghandle,
- int prev_idx, void *buf, int len)
-{
- __u64 cur_offset;
- int rc;
-
- if (len == 0 || len & (LLOG_CHUNK_SIZE - 1))
- return -EINVAL;
-
- CDEBUG(D_OTHER, "looking for log index %u\n", prev_idx);
-
- cur_offset = LLOG_CHUNK_SIZE;
- llog_skip_over(&cur_offset, 0, prev_idx);
-
- while (cur_offset < i_size_read(loghandle->lgh_file->f_dentry->d_inode)) {
- struct llog_rec_hdr *rec, *last_rec;
- struct llog_rec_tail *tail;
- loff_t ppos = cur_offset;
-
- rc = fsfilt_read_record(loghandle->lgh_ctxt->loc_exp->exp_obd,
- loghandle->lgh_file, buf, len,
- &cur_offset);
- if (rc < 0) {
- CERROR("Cant read llog block at log id "DOSTID
- "/%u offset "LPU64"\n",
- POSTID(&loghandle->lgh_id.lgl_oi),
- loghandle->lgh_id.lgl_ogen,
- cur_offset);
- return rc;
- }
-
- /* put number of bytes read into rc to make code simpler */
- rc = cur_offset - ppos;
-
- if (rc == 0) /* end of file, nothing to do */
- return 0;
-
- if (rc < sizeof(*tail)) {
- CERROR("Invalid llog block at log id "DOSTID"/%u offset"
- LPU64"\n", POSTID(&loghandle->lgh_id.lgl_oi),
- loghandle->lgh_id.lgl_ogen, cur_offset);
- return -EINVAL;
- }
-
- rec = buf;
- if (LLOG_REC_HDR_NEEDS_SWABBING(rec))
- lustre_swab_llog_rec(rec);
-
- tail = (struct llog_rec_tail *)(buf + rc -
- sizeof(struct llog_rec_tail));
-
- /* get the last record in block */
- last_rec = (struct llog_rec_hdr *)(buf + rc -
- le32_to_cpu(tail->lrt_len));
-
- if (LLOG_REC_HDR_NEEDS_SWABBING(last_rec))
- lustre_swab_llog_rec(last_rec);
- LASSERT(last_rec->lrh_index == tail->lrt_index);
-
- /* this shouldn't happen */
- if (tail->lrt_index == 0) {
- CERROR("Invalid llog tail at log id "DOSTID"/%u offset"
- LPU64"\n", POSTID(&loghandle->lgh_id.lgl_oi),
- loghandle->lgh_id.lgl_ogen, cur_offset);
- return -EINVAL;
- }
- if (tail->lrt_index < prev_idx)
- continue;
-
- /* sanity check that the start of the new buffer is no farther
- * than the record that we wanted. This shouldn't happen. */
- if (rec->lrh_index > prev_idx) {
- CERROR("missed desired record? %u > %u\n",
- rec->lrh_index, prev_idx);
- return -ENOENT;
- }
- return 0;
- }
- return -EIO;
-}
-
-static struct file *llog_filp_open(char *dir, char *name, int flags, int mode)
-{
- char *logname;
- struct file *filp;
- int len;
-
- OBD_ALLOC(logname, PATH_MAX);
- if (logname == NULL)
- return ERR_PTR(-ENOMEM);
-
- len = snprintf(logname, PATH_MAX, "%s/%s", dir, name);
- if (len >= PATH_MAX - 1) {
- filp = ERR_PTR(-ENAMETOOLONG);
- } else {
- filp = l_filp_open(logname, flags, mode);
- if (IS_ERR(filp) && PTR_ERR(filp) != -ENOENT)
- CERROR("logfile creation %s: %ld\n", logname,
- PTR_ERR(filp));
- }
- OBD_FREE(logname, PATH_MAX);
- return filp;
-}
-
-static int llog_lvfs_open(const struct lu_env *env, struct llog_handle *handle,
- struct llog_logid *logid, char *name,
- enum llog_open_param open_param)
-{
- struct llog_ctxt *ctxt = handle->lgh_ctxt;
- struct l_dentry *dchild = NULL;
- struct obd_device *obd;
- int rc = 0;
-
- LASSERT(ctxt);
- LASSERT(ctxt->loc_exp);
- LASSERT(ctxt->loc_exp->exp_obd);
- obd = ctxt->loc_exp->exp_obd;
-
- LASSERT(handle);
- if (logid != NULL) {
- dchild = obd_lvfs_fid2dentry(ctxt->loc_exp, &logid->lgl_oi,
- logid->lgl_ogen);
- if (IS_ERR(dchild)) {
- rc = PTR_ERR(dchild);
- CERROR("%s: error looking up logfile #"DOSTID "#%08x:"
- " rc = %d\n", ctxt->loc_obd->obd_name,
- POSTID(&logid->lgl_oi), logid->lgl_ogen, rc);
- GOTO(out, rc);
- }
- if (dchild->d_inode == NULL) {
- l_dput(dchild);
- rc = -ENOENT;
- CERROR("%s: nonexistent llog #"DOSTID"#%08x:"
- "rc = %d\n", ctxt->loc_obd->obd_name,
- POSTID(&logid->lgl_oi), logid->lgl_ogen, rc);
- GOTO(out, rc);
- }
- handle->lgh_file = l_dentry_open(&obd->obd_lvfs_ctxt, dchild,
- O_RDWR | O_LARGEFILE);
- l_dput(dchild);
- if (IS_ERR(handle->lgh_file)) {
- rc = PTR_ERR(handle->lgh_file);
- handle->lgh_file = NULL;
- CERROR("%s: error opening llog #"DOSTID"#%08x:"
- "rc = %d\n", ctxt->loc_obd->obd_name,
- POSTID(&logid->lgl_oi), logid->lgl_ogen, rc);
- GOTO(out, rc);
- }
- handle->lgh_id = *logid;
- } else if (name) {
- handle->lgh_file = llog_filp_open(MOUNT_CONFIGS_DIR, name,
- O_RDWR | O_LARGEFILE, 0644);
- if (IS_ERR(handle->lgh_file)) {
- rc = PTR_ERR(handle->lgh_file);
- handle->lgh_file = NULL;
- if (rc == -ENOENT && open_param == LLOG_OPEN_NEW) {
- OBD_ALLOC(handle->lgh_name, strlen(name) + 1);
- if (handle->lgh_name)
- strcpy(handle->lgh_name, name);
- else
- GOTO(out, rc = -ENOMEM);
- rc = 0;
- } else {
- GOTO(out, rc);
- }
- } else {
- lustre_build_llog_lvfs_oid(&handle->lgh_id,
- handle->lgh_file->f_dentry->d_inode->i_ino,
- handle->lgh_file->f_dentry->d_inode->i_generation);
- }
- } else {
- LASSERTF(open_param == LLOG_OPEN_NEW, "%#x\n", open_param);
- handle->lgh_file = NULL;
- }
-
- /* No new llog is expected but doesn't exist */
- if (open_param != LLOG_OPEN_NEW && handle->lgh_file == NULL)
- GOTO(out_name, rc = -ENOENT);
-
- return 0;
-out_name:
- if (handle->lgh_name != NULL)
- OBD_FREE(handle->lgh_name, strlen(name) + 1);
-out:
- return rc;
-}
-
-static int llog_lvfs_exist(struct llog_handle *handle)
-{
- return (handle->lgh_file != NULL);
-}
-
-/* This is a callback from the llog_* functions.
- * Assumes caller has already pushed us into the kernel context. */
-static int llog_lvfs_create(const struct lu_env *env,
- struct llog_handle *handle,
- struct thandle *th)
-{
- struct llog_ctxt *ctxt = handle->lgh_ctxt;
- struct obd_device *obd;
- struct l_dentry *dchild = NULL;
- struct file *file;
- struct obdo *oa = NULL;
- int rc = 0;
- int open_flags = O_RDWR | O_CREAT | O_LARGEFILE;
-
- LASSERT(ctxt);
- LASSERT(ctxt->loc_exp);
- obd = ctxt->loc_exp->exp_obd;
- LASSERT(handle->lgh_file == NULL);
-
- if (handle->lgh_name) {
- file = llog_filp_open(MOUNT_CONFIGS_DIR, handle->lgh_name,
- open_flags, 0644);
- if (IS_ERR(file))
- return PTR_ERR(file);
-
- lustre_build_llog_lvfs_oid(&handle->lgh_id,
- file->f_dentry->d_inode->i_ino,
- file->f_dentry->d_inode->i_generation);
- handle->lgh_file = file;
- } else {
- OBDO_ALLOC(oa);
- if (oa == NULL)
- return -ENOMEM;
-
- ostid_set_seq_llog(&oa->o_oi);
- oa->o_valid = OBD_MD_FLGENER | OBD_MD_FLGROUP;
-
- rc = obd_create(NULL, ctxt->loc_exp, oa, NULL, NULL);
- if (rc)
- GOTO(out, rc);
-
- /* FIXME: rationalize the misuse of o_generation in
- * this API along with mds_obd_{create,destroy}.
- * Hopefully it is only an internal API issue. */
-#define o_generation o_parent_oid
- dchild = obd_lvfs_fid2dentry(ctxt->loc_exp, &oa->o_oi,
- oa->o_generation);
- if (IS_ERR(dchild))
- GOTO(out, rc = PTR_ERR(dchild));
-
- file = l_dentry_open(&obd->obd_lvfs_ctxt, dchild, open_flags);
- l_dput(dchild);
- if (IS_ERR(file))
- GOTO(out, rc = PTR_ERR(file));
- handle->lgh_id.lgl_oi = oa->o_oi;
- handle->lgh_id.lgl_ogen = oa->o_generation;
- handle->lgh_file = file;
-out:
- OBDO_FREE(oa);
- }
- return rc;
-}
-
-static int llog_lvfs_close(const struct lu_env *env,
- struct llog_handle *handle)
-{
- int rc;
-
- if (handle->lgh_file == NULL)
- return 0;
- rc = filp_close(handle->lgh_file, 0);
- if (rc)
- CERROR("%s: error closing llog #"DOSTID"#%08x: "
- "rc = %d\n", handle->lgh_ctxt->loc_obd->obd_name,
- POSTID(&handle->lgh_id.lgl_oi),
- handle->lgh_id.lgl_ogen, rc);
- handle->lgh_file = NULL;
- if (handle->lgh_name) {
- OBD_FREE(handle->lgh_name, strlen(handle->lgh_name) + 1);
- handle->lgh_name = NULL;
- }
- return rc;
-}
-
-static int llog_lvfs_destroy(const struct lu_env *env,
- struct llog_handle *handle)
-{
- struct dentry *fdentry;
- struct obdo *oa;
- struct obd_device *obd = handle->lgh_ctxt->loc_exp->exp_obd;
- char *dir;
- void *th;
- struct inode *inode;
- int rc, rc1;
-
- dir = MOUNT_CONFIGS_DIR;
-
- LASSERT(handle->lgh_file);
- fdentry = handle->lgh_file->f_dentry;
- inode = fdentry->d_parent->d_inode;
- if (strcmp(fdentry->d_parent->d_name.name, dir) == 0) {
- struct lvfs_run_ctxt saved;
- struct vfsmount *mnt = mntget(handle->lgh_file->f_vfsmnt);
-
- push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
- dget(fdentry);
- rc = llog_lvfs_close(env, handle);
- if (rc == 0) {
- mutex_lock_nested(&inode->i_mutex, I_MUTEX_PARENT);
- rc = ll_vfs_unlink(inode, fdentry, mnt);
- mutex_unlock(&inode->i_mutex);
- }
- mntput(mnt);
-
- dput(fdentry);
- pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
- return rc;
- }
-
- OBDO_ALLOC(oa);
- if (oa == NULL)
- return -ENOMEM;
-
- oa->o_oi = handle->lgh_id.lgl_oi;
- oa->o_generation = handle->lgh_id.lgl_ogen;
-#undef o_generation
- oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP | OBD_MD_FLGENER;
-
- rc = llog_lvfs_close(env, handle);
- if (rc)
- GOTO(out, rc);
-
- th = fsfilt_start_log(obd, inode, FSFILT_OP_UNLINK, NULL, 1);
- if (IS_ERR(th)) {
- CERROR("fsfilt_start failed: %ld\n", PTR_ERR(th));
- GOTO(out, rc = PTR_ERR(th));
- }
-
- rc = obd_destroy(NULL, handle->lgh_ctxt->loc_exp, oa,
- NULL, NULL, NULL, NULL);
-
- rc1 = fsfilt_commit(obd, inode, th, 0);
- if (rc == 0 && rc1 != 0)
- rc = rc1;
- out:
- OBDO_FREE(oa);
- return rc;
-}
-
-static int llog_lvfs_declare_create(const struct lu_env *env,
- struct llog_handle *res,
- struct thandle *th)
-{
- return 0;
-}
-
-static int llog_lvfs_declare_write_rec(const struct lu_env *env,
- struct llog_handle *loghandle,
- struct llog_rec_hdr *rec,
- int idx, struct thandle *th)
-{
- return 0;
-}
-
-struct llog_operations llog_lvfs_ops = {
- .lop_write_rec = llog_lvfs_write_rec,
- .lop_next_block = llog_lvfs_next_block,
- .lop_prev_block = llog_lvfs_prev_block,
- .lop_read_header = llog_lvfs_read_header,
- .lop_create = llog_lvfs_create,
- .lop_destroy = llog_lvfs_destroy,
- .lop_close = llog_lvfs_close,
- .lop_open = llog_lvfs_open,
- .lop_exist = llog_lvfs_exist,
- .lop_declare_create = llog_lvfs_declare_create,
- .lop_declare_write_rec = llog_lvfs_declare_write_rec,
-};
-EXPORT_SYMBOL(llog_lvfs_ops);
-#else /* !__KERNEL__ */
-struct llog_operations llog_lvfs_ops = {};
-#endif
--
1.7.9.5
--
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