From: Peng Tao Date: Tue, 19 Nov 2013 14:38:38 +0000 (+0800) Subject: staging/lustre: remove fsfilt_ext3.c X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=bda211d5c166a836c14f8f76268228550d3baf67;p=openwrt%2Fstaging%2Fblogic.git staging/lustre: remove fsfilt_ext3.c It is only used by server. Cc: Andreas Dilger Signed-off-by: Peng Tao Signed-off-by: Greg Kroah-Hartman --- 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 ee75994003e1..000000000000 --- 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 - */ - -#define DEBUG_SUBSYSTEM S_FILTER - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include - -#include - -#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 - -/* - * 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. "); -MODULE_DESCRIPTION("Lustre ext3 Filesystem Helper v0.1"); -MODULE_LICENSE("GPL");