From: James Simmons Date: Fri, 26 Jul 2013 14:21:20 +0000 (-0400) Subject: LU-2158 lvfs: remove llog_lvfs.c and other lvfs code from llog X-Git-Tag: 2.4.91~19 X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=commitdiff_plain;h=fc587387bacf232b0464f0913b967500aae09511 LU-2158 lvfs: remove llog_lvfs.c and other lvfs code from llog - remove obdfilter/llog_lvfs.c - remove lgh_file from llog_header Signed-off-by: Mikhail Pershin Signed-off-by: James Simmons Change-Id: I711e047dcb61f3ac62b33c5a21ae32fe87d7efd6 Reviewed-on: http://review.whamcloud.com/5331 Tested-by: Hudson Reviewed-by: Keith Mannthey Reviewed-by: Andreas Dilger Tested-by: Maloo --- diff --git a/lustre/include/linux/lustre_fsfilt.h b/lustre/include/linux/lustre_fsfilt.h index e320817..8b7fe26 100644 --- a/lustre/include/linux/lustre_fsfilt.h +++ b/lustre/include/linux/lustre_fsfilt.h @@ -50,24 +50,13 @@ #include #include -typedef void (*fsfilt_cb_t)(struct obd_device *obd, __u64 last_rcvd, - void *data, int error); - struct fsfilt_operations { cfs_list_t fs_list; cfs_module_t *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); @@ -75,20 +64,6 @@ 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 * CFS_HZ)) \ @@ -110,64 +85,6 @@ 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 /* __KERNEL__ */ #endif diff --git a/lustre/include/linux/lvfs.h b/lustre/include/linux/lvfs.h index 652d8d2..ee3073f 100644 --- a/lustre/include/linux/lvfs.h +++ b/lustre/include/linux/lvfs.h @@ -68,10 +68,6 @@ 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 { @@ -80,7 +76,6 @@ 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/lustre/include/lustre_log.h b/lustre/include/lustre_log.h index 708d7c8..011811a 100644 --- a/lustre/include/lustre_log.h +++ b/lustre/include/lustre_log.h @@ -317,7 +317,6 @@ 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 */ @@ -333,9 +332,6 @@ struct llog_handle { cfs_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/lustre/include/obd_class.h b/lustre/include/obd_class.h index 5e91034..8c33fc5 100644 --- a/lustre/include/obd_class.h +++ b/lustre/include/obd_class.h @@ -1207,16 +1207,6 @@ 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/lustre/lvfs/fsfilt_ext3.c b/lustre/lvfs/fsfilt_ext3.c index ae23b27..8ca8f19 100644 --- a/lustre/lvfs/fsfilt_ext3.c +++ b/lustre/lvfs/fsfilt_ext3.c @@ -65,124 +65,12 @@ #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 */ -#ifdef HAVE_BLOCKS_FOR_TRUNCATE -# include -#else -static inline unsigned long ext4_blocks_for_truncate(struct inode *inode) -{ - ext4_lblk_t needed; - - needed = inode->i_blocks >> (inode->i_sb->s_blocksize_bits - 9); - if (needed < 2) - needed = 2; - if (needed > EXT4_MAX_TRANS_DATA) - needed = EXT4_MAX_TRANS_DATA; - return EXT4_DATA_TRANS_BLOCKS(inode->i_sb) + needed; -} -#endif - -/* - * 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 @@ -556,211 +444,20 @@ int fsfilt_ext3_map_inode_pages(struct inode *inode, struct page **page, 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, + .fs_type = "ext3", + .fs_owner = THIS_MODULE, + .fs_map_inode_pages = fsfilt_ext3_map_inode_pages, }; static int __init fsfilt_ext3_init(void) { - int rc; - - fcb_cache = kmem_cache_create("fsfilt_ext3_fcb", - sizeof(struct fsfilt_cb_data), - 0, 0, NULL); - if (!fcb_cache) { - CERROR("error allocating fsfilt journal callback cache\n"); - GOTO(out, rc = -ENOMEM); - } - - rc = fsfilt_register_ops(&fsfilt_ext3_ops); - - if (rc) - kmem_cache_destroy(fcb_cache); -out: - return rc; + return fsfilt_register_ops(&fsfilt_ext3_ops); } static void __exit fsfilt_ext3_exit(void) { fsfilt_unregister_ops(&fsfilt_ext3_ops); - kmem_cache_destroy(fcb_cache); } module_init(fsfilt_ext3_init); diff --git a/lustre/obdclass/Makefile.in b/lustre/obdclass/Makefile.in index 371c8f4..1351b9b 100644 --- a/lustre/obdclass/Makefile.in +++ b/lustre/obdclass/Makefile.in @@ -8,7 +8,6 @@ default: all sources: obdclass-all-objs := llog.o llog_cat.o llog_obd.o llog_swab.o -@LDISKFS_ENABLED_TRUE@ obdclass-all-objs += llog_lvfs.o obdclass-all-objs += class_obd.o debug.o genops.o uuid.o llog_ioctl.o obdclass-all-objs += lprocfs_status.o lustre_handles.o lustre_peer.o obdclass-all-objs += llog_osd.o local_storage.o diff --git a/lustre/obdclass/autoMakefile.am b/lustre/obdclass/autoMakefile.am index ba8b75a..1d53b5a 100644 --- a/lustre/obdclass/autoMakefile.am +++ b/lustre/obdclass/autoMakefile.am @@ -9,8 +9,8 @@ INCLUDES = -I$(SYSIO)/include noinst_LIBRARIES = liblustreclass.a liblustreclass_a_SOURCES = class_obd.c debug.c genops.c statfs_pack.c mea.c uuid.c liblustreclass_a_SOURCES += lustre_handles.c lustre_peer.c lprocfs_status.c -liblustreclass_a_SOURCES += obdo.c obd_config.c llog.c llog_obd.c llog_cat.c -liblustreclass_a_SOURCES += llog_lvfs.c llog_swab.c capa.c +liblustreclass_a_SOURCES += obdo.c obd_config.c llog.c llog_obd.c llog_cat.c +liblustreclass_a_SOURCES += llog_swab.c capa.c liblustreclass_a_SOURCES += lu_object.c cl_object.c lu_ref.c liblustreclass_a_SOURCES += cl_page.c cl_lock.c cl_io.c liblustreclass_a_SOURCES += #llog_ioctl.c rbtree.c @@ -35,7 +35,7 @@ obdclass_SOURCES = \ class_obd.c genops.c lprocfs_status.c \ lustre_handles.c lustre_peer.c obd_config.c \ obdo.c debug.c llog_ioctl.c uuid.c \ - llog_swab.c llog_obd.c llog.c llog_cat.c llog_lvfs.c \ + llog_swab.c llog_obd.c llog.c llog_cat.c \ mea.c lu_object.c dt_object.c lu_ref.c obdclass_CFLAGS := $(EXTRA_KCFLAGS) diff --git a/lustre/obdclass/llog_cat.c b/lustre/obdclass/llog_cat.c index c8c83e4..78e92d4 100644 --- a/lustre/obdclass/llog_cat.c +++ b/lustre/obdclass/llog_cat.c @@ -457,31 +457,23 @@ 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/lustre/obdclass/llog_lvfs.c b/lustre/obdclass/llog_lvfs.c deleted file mode 100644 index a83cb6f..0000000 --- a/lustre/obdclass/llog_lvfs.c +++ /dev/null @@ -1,865 +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) 2012, 2013, 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 - */ - -#define DEBUG_SUBSYSTEM S_LOG - -#ifndef __KERNEL__ -#include -#endif - -#include -#include -#include -#include -#include -#include -#include -#include -#include "llog_internal.h" - -#if defined(__KERNEL__) && 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; - ENTRY; - - 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; - - ENTRY; - - 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; - ENTRY; - - 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; - ENTRY; - - 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; - ENTRY; - - 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; - ENTRY; - - 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; - ENTRY; - - 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; - - ENTRY; - - 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; - - ENTRY; - - 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; - - ENTRY; - - 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; - ENTRY; - - 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