-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
+/*
+ * 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).
*
- * lustre/lib/fsfilt_ext3.c
- * Lustre filesystem abstraction routines
+ * 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
*
- * Copyright (C) 2002, 2003 Cluster File Systems, Inc.
- * Author: Andreas Dilger <adilger@clusterfs.com>
+ * 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.
*
- * This file is part of Lustre, http://www.lustre.org.
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
*
- * Lustre is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
+ * 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 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 for more details.
+ * lustre/lvfs/fsfilt_ext3.c
*
- * You should have received a copy of the GNU General Public License
- * along with Lustre; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * Author: Andreas Dilger <adilger@clusterfs.com>
*/
#define DEBUG_SUBSYSTEM S_FILTER
#include <linux/init.h>
#include <linux/module.h>
#include <linux/fs.h>
-#include <linux/jbd.h>
#include <linux/slab.h>
#include <linux/pagemap.h>
-#include <linux/quotaops.h>
-#include <linux/ext3_fs.h>
-#include <linux/ext3_jbd.h>
+#include <ext4/ext4.h>
+#include <ext4/ext4_jbd2.h>
#include <linux/version.h>
#include <linux/bitops.h>
#include <linux/quota.h>
-#include <linux/quotaio_v1.h>
-#include <linux/quotaio_v2.h>
-#include <ext3/xattr.h>
-#include <libcfs/kp30.h>
+#include <libcfs/libcfs.h>
#include <lustre_fsfilt.h>
#include <obd.h>
-#include <lustre_quota.h>
#include <linux/lustre_compat25.h>
#include <linux/lprocfs_status.h>
-#ifdef EXT3_MULTIBLOCK_ALLOCATOR
-#include <linux/ext3_extents.h>
-#endif
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,15)
-#define FSFILT_DATA_TRANS_BLOCKS(sb) EXT3_DATA_TRANS_BLOCKS
-#define FSFILT_DELETE_TRANS_BLOCKS(sb) EXT3_DELETE_TRANS_BLOCKS
-#else
-#define FSFILT_DATA_TRANS_BLOCKS(sb) EXT3_DATA_TRANS_BLOCKS(sb)
-#define FSFILT_DELETE_TRANS_BLOCKS(sb) EXT3_DELETE_TRANS_BLOCKS(sb)
-#endif
+#include <ext4/ext4_extents.h>
-#ifdef EXT3_SINGLEDATA_TRANS_BLOCKS_HAS_SB
/* for kernels 2.6.18 and later */
#define FSFILT_SINGLEDATA_TRANS_BLOCKS(sb) EXT3_SINGLEDATA_TRANS_BLOCKS(sb)
-#else
-#define FSFILT_SINGLEDATA_TRANS_BLOCKS(sb) EXT3_SINGLEDATA_TRANS_BLOCKS
-#endif
-#define fsfilt_ext3_journal_start(inode, nblocks) ext3_journal_start(inode, nblocks)
-#define fsfilt_ext3_journal_stop(handle) ext3_journal_stop(handle)
+#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)
+
+#ifdef HAVE_EXT4_JOURNAL_CALLBACK_ADD
+# define journal_callback ext4_journal_cb_entry
+# define fsfilt_journal_callback_set(handle, func, jcb) \
+ ext4_journal_callback_add(handle, func, jcb)
+#elif defined(HAVE_JBD2_JOURNAL_CALLBACK_SET)
+# define fsfilt_journal_callback_set(handle, func, jcb) \
+ jbd2_journal_callback_set(handle, func, jcb)
+#else
+# error missing journal commit callback
+#endif /* HAVE_EXT4_JOURNAL_CALLBACK_ADD */
static cfs_mem_cache_t *fcb_cache;
void *cb_data; /* MDS/OST completion function data */
};
-#ifndef EXT3_XATTR_INDEX_TRUSTED /* temporary until we hit l28 kernel */
-#define EXT3_XATTR_INDEX_TRUSTED 4
-#endif
-
static char *fsfilt_ext3_get_label(struct super_block *sb)
{
return EXT3_SB(sb)->s_es->s_volume_name;
}
-static int fsfilt_ext3_set_label(struct super_block *sb, char *label)
-{
- /* see e.g. fsfilt_ext3_write_record() */
- journal_t *journal;
- handle_t *handle;
- int err;
-
- journal = EXT3_SB(sb)->s_journal;
- handle = journal_start(journal, 1);
- if (IS_ERR(handle)) {
- CERROR("can't start transaction\n");
- return(PTR_ERR(handle));
- }
-
- err = ext3_journal_get_write_access(handle, EXT3_SB(sb)->s_sbh);
- if (err)
- goto out;
-
- memcpy(EXT3_SB(sb)->s_es->s_volume_name, label,
- sizeof(EXT3_SB(sb)->s_es->s_volume_name));
-
- err = ext3_journal_dirty_metadata(handle, EXT3_SB(sb)->s_sbh);
-
-out:
- journal_stop(handle);
-
- return(err);
-}
-
-static char *fsfilt_ext3_uuid(struct super_block *sb)
-{
- return EXT3_SB(sb)->s_es->s_uuid;
-}
-
-#ifdef HAVE_DISK_INODE_VERSION
-/*
- * Get the 64-bit version for an inode.
- */
-static __u64 fsfilt_ext3_get_version(struct inode *inode)
-{
- return EXT3_I(inode)->i_fs_version;
-}
-
-/*
- * Set the 64-bit version and return the old version.
- */
-static __u64 fsfilt_ext3_set_version(struct inode *inode, __u64 new_version)
+/* kernel has ext4_blocks_for_truncate since linux-3.1.1 */
+#ifdef HAVE_BLOCKS_FOR_TRUNCATE
+# include <ext4/truncate.h>
+#else
+static inline unsigned long ext4_blocks_for_truncate(struct inode *inode)
{
- __u64 old_version = EXT3_I(inode)->i_fs_version;
+ ext4_lblk_t needed;
- (EXT3_I(inode))->i_fs_version = new_version;
- return old_version;
+ 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
/*
switch(op) {
case FSFILT_OP_RMDIR:
case FSFILT_OP_UNLINK:
- /* delete one file + create/update logs for each stripe */
- nblocks += FSFILT_DELETE_TRANS_BLOCKS(inode->i_sb);
- nblocks += (EXT3_INDEX_EXTRA_TRANS_BLOCKS +
- FSFILT_SINGLEDATA_TRANS_BLOCKS(inode->i_sb)) * logs;
- break;
+ /* 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_RENAME:
/* modify additional directory */
nblocks += FSFILT_SINGLEDATA_TRANS_BLOCKS(inode->i_sb);
nblocks += 3;
/* no break */
case FSFILT_OP_CREATE: {
-#if defined(EXT3_EXTENTS_FL) && defined(EXT3_INDEX_FL)
- static int warned;
- if (!warned) {
- if (!test_opt(inode->i_sb, EXTENTS)) {
- warned = 1;
- } else if (((EXT3_I(inode)->i_flags &
- cpu_to_le32(EXT3_EXTENTS_FL | EXT3_INDEX_FL)) ==
- cpu_to_le32(EXT3_EXTENTS_FL | EXT3_INDEX_FL))) {
- CWARN("extent-mapped directory found - contact "
- "CFS: support@clusterfs.com\n");
- warned = 1;
- }
- }
-#endif
/* no break */
}
case FSFILT_OP_MKDIR:
/* no break */
case FSFILT_OP_LINK:
/* modify parent directory */
- nblocks += EXT3_INDEX_EXTRA_TRANS_BLOCKS +
- FSFILT_DATA_TRANS_BLOCKS(inode->i_sb);
+ nblocks += EXT3_INDEX_EXTRA_TRANS_BLOCKS +
+ EXT3_DATA_TRANS_BLOCKS(inode->i_sb);
/* create/update logs for each stripe */
nblocks += (EXT3_INDEX_EXTRA_TRANS_BLOCKS +
FSFILT_SINGLEDATA_TRANS_BLOCKS(inode->i_sb)) * logs;
break;
case FSFILT_OP_SETATTR:
/* Setattr on inode */
- nblocks += 1;
- nblocks += EXT3_INDEX_EXTRA_TRANS_BLOCKS +
- FSFILT_DATA_TRANS_BLOCKS(inode->i_sb);
+ nblocks += 1;
+ nblocks += EXT3_INDEX_EXTRA_TRANS_BLOCKS +
+ EXT3_DATA_TRANS_BLOCKS(inode->i_sb);
/* quota chown log for each stripe */
nblocks += (EXT3_INDEX_EXTRA_TRANS_BLOCKS +
FSFILT_SINGLEDATA_TRANS_BLOCKS(inode->i_sb)) * logs;
break;
case FSFILT_OP_CANCEL_UNLINK:
- /* blocks for log header bitmap update OR
- * blocks for catalog header bitmap update + unlink of logs */
- nblocks = (LLOG_CHUNK_SIZE >> inode->i_blkbits) +
- FSFILT_DELETE_TRANS_BLOCKS(inode->i_sb) * logs;
- break;
- case FSFILT_OP_JOIN:
- /* delete 2 file(file + array id) + create 1 file (array id)
- * create/update logs for each stripe */
- nblocks += 2 * FSFILT_DELETE_TRANS_BLOCKS(inode->i_sb);
-
- /*create array log for head file*/
- nblocks += 3;
- nblocks += (EXT3_INDEX_EXTRA_TRANS_BLOCKS +
- FSFILT_SINGLEDATA_TRANS_BLOCKS(inode->i_sb));
- /*update head file array */
- nblocks += EXT3_INDEX_EXTRA_TRANS_BLOCKS +
- FSFILT_DATA_TRANS_BLOCKS(inode->i_sb);
- break;
+ 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();
}
journal_start:
LASSERTF(nblocks > 0, "can't start %d credit transaction\n", nblocks);
- handle = fsfilt_ext3_journal_start(inode, nblocks);
+ handle = ext3_journal_start(inode, nblocks);
if (!IS_ERR(handle))
LASSERT(current->journal_info == handle);
return handle;
}
-/*
- * Calculate the number of buffer credits needed to write multiple pages in
- * a single ext3 transaction. No, this shouldn't be here, but as yet ext3
- * doesn't have a nice API for calculating this sort of thing in advance.
- *
- * See comment above ext3_writepage_trans_blocks for details. We assume
- * no data journaling is being done, but it does allow for all of the pages
- * being non-contiguous. If we are guaranteed contiguous pages we could
- * reduce the number of (d)indirect blocks a lot.
- *
- * With N blocks per page and P pages, for each inode we have at most:
- * N*P indirect
- * min(N*P, blocksize/4 + 1) dindirect blocks
- * niocount tindirect
- *
- * For the entire filesystem, we have at most:
- * min(sum(nindir + P), ngroups) bitmap blocks (from the above)
- * min(sum(nindir + P), gdblocks) group descriptor blocks (from the above)
- * objcount inode blocks
- * 1 superblock
- * 2 * EXT3_SINGLEDATA_TRANS_BLOCKS for the quota files
- *
- * 1 EXT3_DATA_TRANS_BLOCKS for the last_rcvd update.
- */
-static int fsfilt_ext3_credits_needed(int objcount, struct fsfilt_objinfo *fso,
- int niocount, struct niobuf_local *nb)
-{
- struct super_block *sb = fso->fso_dentry->d_inode->i_sb;
- __u64 next_indir;
- const int blockpp = 1 << (CFS_PAGE_SHIFT - sb->s_blocksize_bits);
- int nbitmaps = 0, ngdblocks;
- int needed = objcount + 1; /* inodes + superblock */
- int i, j;
-
- for (i = 0, j = 0; i < objcount; i++, fso++) {
- /* two or more dindirect blocks in case we cross boundary */
- int ndind = (long)((nb[j + fso->fso_bufcnt - 1].offset -
- nb[j].offset) >>
- sb->s_blocksize_bits) /
- (EXT3_ADDR_PER_BLOCK(sb) * EXT3_ADDR_PER_BLOCK(sb));
- nbitmaps += min(fso->fso_bufcnt, ndind > 0 ? ndind : 2);
-
- /* leaf, indirect, tindirect blocks for first block */
- nbitmaps += blockpp + 2;
-
- j += fso->fso_bufcnt;
- }
-
- next_indir = nb[0].offset +
- (EXT3_ADDR_PER_BLOCK(sb) << sb->s_blocksize_bits);
- for (i = 1; i < niocount; i++) {
- if (nb[i].offset >= next_indir) {
- nbitmaps++; /* additional indirect */
- next_indir = nb[i].offset +
- (EXT3_ADDR_PER_BLOCK(sb)<<sb->s_blocksize_bits);
- } else if (nb[i].offset != nb[i - 1].offset + sb->s_blocksize) {
- nbitmaps++; /* additional indirect */
- }
- nbitmaps += blockpp; /* each leaf in different group? */
- }
-
- ngdblocks = nbitmaps;
- if (nbitmaps > EXT3_SB(sb)->s_groups_count)
- nbitmaps = EXT3_SB(sb)->s_groups_count;
- if (ngdblocks > EXT3_SB(sb)->s_gdb_count)
- ngdblocks = EXT3_SB(sb)->s_gdb_count;
-
- needed += nbitmaps + ngdblocks;
-
- /* last_rcvd update */
- needed += FSFILT_DATA_TRANS_BLOCKS(sb);
-
-#if defined(CONFIG_QUOTA)
- /* We assume that there will be 1 bit set in s_dquot.flags for each
- * quota file that is active. This is at least true for now.
- */
- needed += hweight32(sb_any_quota_enabled(sb)) *
- FSFILT_SINGLEDATA_TRANS_BLOCKS(sb);
-#endif
-
- return needed;
-}
-
-/* We have to start a huge journal transaction here to hold all of the
- * metadata for the pages being written here. This is necessitated by
- * the fact that we do lots of prepare_write operations before we do
- * any of the matching commit_write operations, so even if we split
- * up to use "smaller" transactions none of them could complete until
- * all of them were opened. By having a single journal transaction,
- * we eliminate duplicate reservations for common blocks like the
- * superblock and group descriptors or bitmaps.
- *
- * We will start the transaction here, but each prepare_write will
- * add a refcount to the transaction, and each commit_write will
- * remove a refcount. The transaction will be closed when all of
- * the pages have been written.
- */
-static void *fsfilt_ext3_brw_start(int objcount, struct fsfilt_objinfo *fso,
- int niocount, struct niobuf_local *nb,
- void *desc_private, int logs)
-{
- journal_t *journal;
- handle_t *handle;
- int needed;
- ENTRY;
-
- LASSERT(current->journal_info == desc_private);
- journal = EXT3_SB(fso->fso_dentry->d_inode->i_sb)->s_journal;
- needed = fsfilt_ext3_credits_needed(objcount, fso, niocount, nb);
-
- /* The number of blocks we could _possibly_ dirty can very large.
- * We reduce our request if it is absurd (and we couldn't get that
- * many credits for a single handle anyways).
- *
- * At some point we have to limit the size of I/Os sent at one time,
- * increase the size of the journal, or we have to calculate the
- * actual journal requirements more carefully by checking all of
- * the blocks instead of being maximally pessimistic. It remains to
- * be seen if this is a real problem or not.
- */
- if (needed > journal->j_max_transaction_buffers) {
- CERROR("want too many journal credits (%d) using %d instead\n",
- needed, journal->j_max_transaction_buffers);
- needed = journal->j_max_transaction_buffers;
- }
-
- LASSERTF(needed > 0, "can't start %d credit transaction\n", needed);
- handle = fsfilt_ext3_journal_start(fso->fso_dentry->d_inode, needed);
- if (IS_ERR(handle)) {
- CERROR("can't get handle for %d credits: rc = %ld\n", needed,
- PTR_ERR(handle));
- } else {
- LASSERT(handle->h_buffer_credits >= needed);
- LASSERT(current->journal_info == handle);
- }
-
- RETURN(handle);
-}
-
-static int fsfilt_ext3_extend(struct inode *inode, unsigned int nblocks,void *h)
-{
- handle_t *handle = h;
-
- /* fsfilt_extend called with nblocks = 0 for testing in special cases */
- if (nblocks == 0) {
- handle->h_buffer_credits = 0;
- CWARN("setting credits of handle %p to zero by request\n", h);
- }
-
- if (handle->h_buffer_credits > nblocks)
- return 0;
- if (journal_extend(handle, nblocks) == 0)
- return 0;
-
- ext3_mark_inode_dirty(handle, inode);
- return journal_restart(handle, nblocks);
-}
-
static int fsfilt_ext3_commit(struct inode *inode, void *h, int force_sync)
{
int rc;
if (force_sync)
handle->h_sync = 1; /* recovery likes this */
- rc = fsfilt_ext3_journal_stop(handle);
-
- return rc;
-}
-
-static int fsfilt_ext3_commit_async(struct inode *inode, void *h,
- void **wait_handle)
-{
- unsigned long tid;
- transaction_t *transaction;
- handle_t *handle = h;
- journal_t *journal;
- int rc;
-
- LASSERT(current->journal_info == handle);
-
- transaction = handle->h_transaction;
- journal = transaction->t_journal;
- tid = transaction->t_tid;
- /* we don't want to be blocked */
- handle->h_sync = 0;
- rc = fsfilt_ext3_journal_stop(handle);
- if (rc) {
- CERROR("error while stopping transaction: %d\n", rc);
- return rc;
- }
- log_start_commit(journal, tid);
-
- *wait_handle = (void *) tid;
- CDEBUG(D_INODE, "commit async: %lu\n", (unsigned long) tid);
- return 0;
-}
-
-static int fsfilt_ext3_commit_wait(struct inode *inode, void *h)
-{
- journal_t *journal = EXT3_JOURNAL(inode);
- tid_t tid = (tid_t)(long)h;
-
- CDEBUG(D_INODE, "commit wait: %lu\n", (unsigned long) tid);
- if (unlikely(is_journal_aborted(journal)))
- return -EIO;
-
- log_wait_commit(EXT3_JOURNAL(inode), tid);
-
- if (unlikely(is_journal_aborted(journal)))
- return -EIO;
- return 0;
-}
-
-static int fsfilt_ext3_setattr(struct dentry *dentry, void *handle,
- struct iattr *iattr, int do_trunc)
-{
- struct inode *inode = dentry->d_inode;
- int rc = 0;
-
- /* Avoid marking the inode dirty on the superblock list unnecessarily.
- * We are already writing the inode to disk as part of this
- * transaction and want to avoid a lot of extra inode writeout
- * later on. b=9828 */
- if (iattr->ia_valid & ATTR_SIZE && !do_trunc) {
- /* ATTR_SIZE would invoke truncate: clear it */
- iattr->ia_valid &= ~ATTR_SIZE;
- EXT3_I(inode)->i_disksize = iattr->ia_size;
- i_size_write(inode, iattr->ia_size);
-
- if (iattr->ia_valid & ATTR_UID)
- inode->i_uid = iattr->ia_uid;
- if (iattr->ia_valid & ATTR_GID)
- inode->i_gid = iattr->ia_gid;
- if (iattr->ia_valid & ATTR_ATIME)
- inode->i_atime = iattr->ia_atime;
- if (iattr->ia_valid & ATTR_MTIME)
- inode->i_mtime = iattr->ia_mtime;
- if (iattr->ia_valid & ATTR_CTIME)
- inode->i_ctime = iattr->ia_ctime;
- if (iattr->ia_valid & ATTR_MODE) {
- inode->i_mode = iattr->ia_mode;
-
- if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID))
- inode->i_mode &= ~S_ISGID;
- }
-
- inode->i_sb->s_op->dirty_inode(inode);
-
- goto out;
- }
-
- /* Don't allow setattr to change file type */
- if (iattr->ia_valid & ATTR_MODE)
- iattr->ia_mode = (inode->i_mode & S_IFMT) |
- (iattr->ia_mode & ~S_IFMT);
-
- /* We set these flags on the client, but have already checked perms
- * so don't confuse inode_change_ok. */
- iattr->ia_valid &= ~(ATTR_MTIME_SET | ATTR_ATIME_SET);
-
- if (inode->i_op->setattr) {
- rc = inode->i_op->setattr(dentry, iattr);
- } else {
- rc = inode_change_ok(inode, iattr);
- if (!rc)
- rc = inode_setattr(inode, iattr);
- }
-
- out:
- RETURN(rc);
-}
-
-static int fsfilt_ext3_iocontrol(struct inode * inode, struct file *file,
- unsigned int cmd, unsigned long arg)
-{
- int rc = 0;
- ENTRY;
-
- /* FIXME: Can't do this because of nested transaction deadlock */
- if (cmd == EXT3_IOC_SETFLAGS && (*(int *)arg) & EXT3_JOURNAL_DATA_FL) {
- CERROR("can't set data journal flag on file\n");
- RETURN(-EPERM);
- }
-
- if (inode->i_fop->ioctl)
- rc = inode->i_fop->ioctl(inode, file, cmd, arg);
- else
- RETURN(-ENOTTY);
-
- RETURN(rc);
-}
-
-static int fsfilt_ext3_set_md(struct inode *inode, void *handle,
- void *lmm, int lmm_size, const char *name)
-{
- int rc;
-
- LASSERT(TRYLOCK_INODE_MUTEX(inode) == 0);
-
- rc = ext3_xattr_set_handle(handle, inode, EXT3_XATTR_INDEX_TRUSTED,
- name, lmm, lmm_size, 0);
-
-
- if (rc && rc != -EROFS)
- CERROR("error adding MD data to inode %lu: rc = %d\n",
- inode->i_ino, rc);
- return rc;
-}
-
-/* Must be called with i_mutex held */
-static int fsfilt_ext3_get_md(struct inode *inode, void *lmm, int lmm_size,
- const char *name)
-{
- int rc;
-
- LASSERT(TRYLOCK_INODE_MUTEX(inode) == 0);
-
- rc = ext3_xattr_get(inode, EXT3_XATTR_INDEX_TRUSTED,
- name, lmm, lmm_size);
-
- /* This gives us the MD size */
- if (lmm == NULL)
- return (rc == -ENODATA) ? 0 : rc;
-
- if (rc < 0) {
- CDEBUG(D_INFO, "error getting EA %d/%s from inode %lu: rc %d\n",
- EXT3_XATTR_INDEX_TRUSTED, name,
- inode->i_ino, rc);
- memset(lmm, 0, lmm_size);
- return (rc == -ENODATA) ? 0 : rc;
- }
-
- return rc;
-}
-
-static int fsfilt_ext3_send_bio(int rw, struct inode *inode, struct bio *bio)
-{
- submit_bio(rw, bio);
- return 0;
-}
-
-static ssize_t fsfilt_ext3_readpage(struct file *file, char *buf, size_t count,
- loff_t *off)
-{
- struct inode *inode = file->f_dentry->d_inode;
- int rc = 0;
-
- if (S_ISREG(inode->i_mode))
- rc = file->f_op->read(file, buf, count, off);
- else {
- const int blkbits = inode->i_sb->s_blocksize_bits;
- const int blksize = inode->i_sb->s_blocksize;
-
- CDEBUG(D_EXT2, "reading "LPSZ" at dir %lu+%llu\n",
- count, inode->i_ino, *off);
- while (count > 0) {
- struct buffer_head *bh;
-
- bh = NULL;
- if (*off < i_size_read(inode)) {
- int err = 0;
-
- bh = ext3_bread(NULL, inode, *off >> blkbits,
- 0, &err);
-
- CDEBUG(D_EXT2, "read %u@%llu\n", blksize, *off);
-
- if (bh) {
- memcpy(buf, bh->b_data, blksize);
- brelse(bh);
- } else if (err) {
- /* XXX in theory we should just fake
- * this buffer and continue like ext3,
- * especially if this is a partial read
- */
- CERROR("error read dir %lu+%llu: %d\n",
- inode->i_ino, *off, err);
- RETURN(err);
- }
- }
- if (!bh) {
- struct ext3_dir_entry_2 *fake = (void *)buf;
-
- CDEBUG(D_EXT2, "fake %u@%llu\n", blksize, *off);
- memset(fake, 0, sizeof(*fake));
- fake->rec_len = cpu_to_le16(blksize);
- }
- count -= blksize;
- buf += blksize;
- *off += blksize;
- rc += blksize;
- }
- }
+ rc = ext3_journal_stop(handle);
return rc;
}
-static void fsfilt_ext3_cb_func(struct journal_callback *jcb, int error)
-{
- struct fsfilt_cb_data *fcb = (struct fsfilt_cb_data *)jcb;
-
- fcb->cb_func(fcb->cb_obd, fcb->cb_last_rcvd, fcb->cb_data, error);
-
- OBD_SLAB_FREE(fcb, fcb_cache, sizeof *fcb);
-}
-
-static int fsfilt_ext3_add_journal_cb(struct obd_device *obd, __u64 last_rcvd,
- void *handle, fsfilt_cb_t cb_func,
- void *cb_data)
-{
- struct fsfilt_cb_data *fcb;
-
- OBD_SLAB_ALLOC(fcb, fcb_cache, CFS_ALLOC_IO, sizeof *fcb);
- if (fcb == NULL)
- RETURN(-ENOMEM);
-
- fcb->cb_func = cb_func;
- fcb->cb_obd = obd;
- fcb->cb_last_rcvd = last_rcvd;
- fcb->cb_data = cb_data;
-
- CDEBUG(D_EXT2, "set callback for last_rcvd: "LPD64"\n", last_rcvd);
- journal_callback_set(handle, fsfilt_ext3_cb_func,
- (struct journal_callback *)fcb);
-
- return 0;
-}
-
-/*
- * We need to hack the return value for the free inode counts because
- * the current EA code requires one filesystem block per inode with EAs,
- * so it is possible to run out of blocks before we run out of inodes.
- *
- * This can be removed when the ext3 EA code is fixed.
- */
-static int fsfilt_ext3_statfs(struct super_block *sb, struct obd_statfs *osfs)
-{
- struct kstatfs sfs;
- int rc;
-
- memset(&sfs, 0, sizeof(sfs));
-
- rc = ll_do_statfs(sb, &sfs);
-
- if (!rc && sfs.f_bfree < sfs.f_ffree) {
- sfs.f_files = (sfs.f_files - sfs.f_ffree) + sfs.f_bfree;
- sfs.f_ffree = sfs.f_bfree;
- }
-
- statfs_pack(osfs, &sfs);
- return rc;
-}
-
-static int fsfilt_ext3_sync(struct super_block *sb)
-{
- return ext3_force_commit(sb);
-}
-
-#if defined(EXT3_MULTIBLOCK_ALLOCATOR) && (!defined(EXT3_EXT_CACHE_NO) || defined(EXT_CACHE_MARK))
-#warning "kernel code has old extents/mballoc patch, disabling"
-#undef EXT3_MULTIBLOCK_ALLOCATOR
-#endif
#ifndef EXT3_EXTENTS_FL
#define EXT3_EXTENTS_FL 0x00080000 /* Inode uses extents */
#endif
-#ifdef EXT3_MULTIBLOCK_ALLOCATOR
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17))
-#define ext3_up_truncate_sem(inode) up(&EXT3_I(inode)->truncate_sem);
-#define ext3_down_truncate_sem(inode) down(&EXT3_I(inode)->truncate_sem);
-#else
-#define ext3_up_truncate_sem(inode) mutex_unlock(&EXT3_I(inode)->truncate_mutex);
-#define ext3_down_truncate_sem(inode) mutex_lock(&EXT3_I(inode)->truncate_mutex);
-#endif
-
#ifndef EXT_ASSERT
#define EXT_ASSERT(cond) BUG_ON(!(cond))
#endif
-#ifdef EXT3_EXT_HAS_NO_TREE
-/* for kernels 2.6.18 and later */
+#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 EXT_GENERATION(inode) ext_generation(inode)
#define fsfilt_ext3_ext_walk_space(inode, block, num, cb, cbdata) \
ext3_ext_walk_space(inode, block, num, cb, cbdata);
-#else
-#define ext3_ext_base ext3_extents_tree
-#define ext3_ext_base2inode(tree) (tree->inode)
-#define fsfilt_ext3_ext_walk_space(tree, block, num, cb, cbdata) \
- ext3_ext_walk_space(tree, block, num, cb);
-#endif
-
-#include <linux/lustre_version.h>
-#if EXT3_EXT_MAGIC == 0xf301
-#define ee_start e_start
-#define ee_block e_block
-#define ee_len e_num
-#endif
-#ifndef EXT3_BB_MAX_BLOCKS
-#define ext3_mb_new_blocks(handle, inode, goal, count, aflags, err) \
- ext3_new_blocks(handle, inode, count, goal, err)
-#endif
struct bpointers {
unsigned long *blocks;
int create;
};
-static int ext3_ext_find_goal(struct inode *inode, struct ext3_ext_path *path,
- unsigned long block, int *aflags)
+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;
depth = path->p_depth;
/* try to predict block placement */
- if ((ex = path[depth].p_ext)) {
-#if 0
- /* This prefers to eat into a contiguous extent
- * rather than find an extent that the whole
- * request will fit into. This can fragment data
- * block allocation and prevents our lovely 1M I/Os
- * from reaching the disk intact. */
- if (ex->ee_block + ex->ee_len == block)
- *aflags |= 1;
-#endif
- return ex->ee_start + (block - ex->ee_block);
- }
+ if ((ex = path[depth].p_ext))
+ return ext_pblock(ex) + (block - le32_to_cpu(ex->ee_block));
/* it looks index is empty
* try to find starting from index itself */
pblock = ext3_mb_new_blocks(handle, &ar, err);
*count = ar.len;
return pblock;
-
}
#endif
-#ifdef EXT3_EXT_HAS_NO_TREE
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;
-#else
-static int ext3_ext_new_extent_cb(struct ext3_ext_base *base,
- struct ext3_ext_path *path,
- struct ext3_ext_cache *cex)
-{
- struct bpointers *bp = base->private;
-#endif
struct inode *inode = ext3_ext_base2inode(base);
struct ext3_extent nex;
unsigned long pblock;
unsigned long count;
handle_t *handle;
- i = EXT_DEPTH(base);
- EXT_ASSERT(i == path->p_depth);
- EXT_ASSERT(path[i].p_hdr);
-
if (cex->ec_type == EXT3_EXT_CACHE_EXTENT) {
err = EXT_CONTINUE;
goto map;
return EXT_CONTINUE;
}
- tgen = EXT_GENERATION(base);
- count = ext3_ext_calc_credits_for_insert(base, path);
- ext3_up_truncate_sem(inode);
+ tgen = EXT_GENERATION(base);
+ count = ext3_ext_calc_credits_for_insert(base, path);
- handle = fsfilt_ext3_journal_start(inode, count+EXT3_ALLOC_NEEDED+1);
- if (IS_ERR(handle)) {
- ext3_down_truncate_sem(inode);
- return PTR_ERR(handle);
- }
+ handle = ext3_journal_start(inode, count+EXT3_ALLOC_NEEDED+1);
+ if (IS_ERR(handle)) {
+ return PTR_ERR(handle);
+ }
- ext3_down_truncate_sem(inode);
if (tgen != EXT_GENERATION(base)) {
/* the tree has changed. so path can be invalid at moment */
- fsfilt_ext3_journal_stop(handle);
+ 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;
}
EXT_ASSERT(count <= cex->ec_len);
/* insert new extent */
- nex.ee_block = cex->ec_block;
- nex.ee_start = pblock;
- nex.ee_len = count;
- err = ext3_ext_insert_extent(handle, base, path, &nex);
+ 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) {
- CERROR("can't insert extent: %d\n", err);
- /* XXX: export ext3_free_blocks() */
- /*ext3_free_blocks(handle, inode, nex.ee_start, nex.ee_len, 0);*/
+ /* 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
+ ext3_free_blocks(handle, inode, ext_pblock(&nex),
+ cpu_to_le16(nex.ee_len), 0);
goto out;
}
* we are asking ext3_ext_walk_space() to continue
* scaning after that block
*/
- cex->ec_len = nex.ee_len;
- cex->ec_start = nex.ee_start;
- BUG_ON(nex.ee_len == 0);
- BUG_ON(nex.ee_block != cex->ec_block);
+ cex->ec_len = le16_to_cpu(nex.ee_len);
+ cex->ec_start = ext_pblock(&nex);
+ BUG_ON(le16_to_cpu(nex.ee_len) == 0);
+ BUG_ON(le32_to_cpu(nex.ee_block) != cex->ec_block);
out:
- fsfilt_ext3_journal_stop(handle);
+ up_write((&EXT4_I(inode)->i_data_sem));
+ ext3_journal_stop(handle);
map:
if (err >= 0) {
/* map blocks */
CERROR("hmm. why do we find this extent?\n");
CERROR("initial space: %lu:%u\n",
bp->start, bp->init_num);
- CERROR("current extent: %u/%u/%u %d\n",
+ CERROR("current extent: %u/%u/%llu %d\n",
cex->ec_block, cex->ec_len,
- cex->ec_start, cex->ec_type);
+ (unsigned long long)cex->ec_start,
+ cex->ec_type);
}
i = 0;
if (cex->ec_block < bp->start)
unsigned long num, unsigned long *blocks,
int *created, int create)
{
-#ifdef EXT3_EXT_HAS_NO_TREE
struct ext3_ext_base *base = inode;
-#else
- struct ext3_extents_tree tree;
- struct ext3_ext_base *base = &tree;
-#endif
struct bpointers bp;
int err;
CDEBUG(D_OTHER, "blocks %lu-%lu requested for inode %u\n",
block, block + num - 1, (unsigned) inode->i_ino);
-#ifndef EXT3_EXT_HAS_NO_TREE
- ext3_init_tree_desc(base, inode);
- tree.private = &bp;
-#endif
bp.blocks = blocks;
bp.created = created;
bp.start = block;
bp.init_num = bp.num = num;
bp.create = create;
- ext3_down_truncate_sem(inode);
- err = fsfilt_ext3_ext_walk_space(base, block, num,
- ext3_ext_new_extent_cb, &bp);
- ext3_ext_invalidate_cache(base);
- ext3_up_truncate_sem(inode);
+ err = fsfilt_ext3_ext_walk_space(base, block, num,
+ ext3_ext_new_extent_cb, &bp);
+ ext3_ext_invalidate_cache(base);
return err;
}
cleanup:
return rc;
}
-#endif /* EXT3_MULTIBLOCK_ALLOCATOR */
extern int ext3_map_inode_page(struct inode *inode, struct page *page,
unsigned long *blocks, int *created, int create);
int fsfilt_ext3_map_inode_pages(struct inode *inode, struct page **page,
int pages, unsigned long *blocks,
int *created, int create,
- struct semaphore *optional_sem)
+ struct mutex *optional_mutex)
{
int rc;
-#ifdef EXT3_MULTIBLOCK_ALLOCATOR
+
if (EXT3_I(inode)->i_flags & EXT3_EXTENTS_FL) {
rc = fsfilt_ext3_map_ext_inode_pages(inode, page, pages,
blocks, created, create);
return rc;
}
-#endif
- if (optional_sem != NULL)
- down(optional_sem);
+ if (optional_mutex != NULL)
+ mutex_lock(optional_mutex);
rc = fsfilt_ext3_map_bm_inode_pages(inode, page, pages, blocks,
created, create);
- if (optional_sem != NULL)
- up(optional_sem);
+ if (optional_mutex != NULL)
+ mutex_unlock(optional_mutex);
return rc;
}
int err, blocksize, csize, boffs, osize = size;
/* prevent reading after eof */
- lock_kernel();
- if (i_size_read(inode) < *offs + size) {
- size = i_size_read(inode) - *offs;
- unlock_kernel();
+ 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) {
- CERROR("size %llu is too short for read %u@%llu\n",
- i_size_read(inode), size, *offs);
- return -EIO;
+ 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 {
- unlock_kernel();
+ spin_unlock(&inode->i_lock);
}
blocksize = 1 << inode->i_blkbits;
/* correct in-core and on-disk sizes */
if (new_size > i_size_read(inode)) {
- lock_kernel();
- 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)
- mark_inode_dirty(inode);
- unlock_kernel();
+ 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)
block_count = (*offs & (blocksize - 1)) + bufsize;
block_count = (block_count + blocksize - 1) >> inode->i_blkbits;
- handle = fsfilt_ext3_journal_start(inode,
- block_count * FSFILT_DATA_TRANS_BLOCKS(inode->i_sb) + 2);
- if (IS_ERR(handle)) {
- CERROR("can't start transaction for %d blocks (%d bytes)\n",
- block_count * FSFILT_DATA_TRANS_BLOCKS(inode->i_sb) + 2, bufsize);
- return PTR_ERR(handle);
- }
+ 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 */
- fsfilt_ext3_journal_stop(handle);
+ ext3_journal_stop(handle);
return err;
}
static int fsfilt_ext3_setup(struct super_block *sb)
{
-#if 0
- EXT3_SB(sb)->dx_lock = fsfilt_ext3_dx_lock;
- EXT3_SB(sb)->dx_unlock = fsfilt_ext3_dx_unlock;
-#endif
+ 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);
#endif
if (!EXT3_HAS_COMPAT_FEATURE(sb, EXT3_FEATURE_COMPAT_DIR_INDEX))
CWARN("filesystem doesn't have dir_index feature enabled\n");
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,13)) && HAVE_QUOTA_SUPPORT
- set_opt(EXT3_SB(sb)->s_mount_opt, QUOTA);
-#endif
- return 0;
-}
-
-/* If fso is NULL, op is FSFILT operation, otherwise op is number of fso
- objects. Logs is number of logfiles to update */
-static int fsfilt_ext3_get_op_len(int op, struct fsfilt_objinfo *fso, int logs)
-{
- if ( !fso ) {
- switch(op) {
- case FSFILT_OP_CREATE:
- /* directory leaf, index & indirect & EA*/
- return 4 + 3 * logs;
- case FSFILT_OP_UNLINK:
- return 3 * logs;
- }
- } else {
- int i;
- int needed = 0;
- struct super_block *sb = fso->fso_dentry->d_inode->i_sb;
- int blockpp = 1 << (CFS_PAGE_SHIFT - sb->s_blocksize_bits);
- int addrpp = EXT3_ADDR_PER_BLOCK(sb) * blockpp;
- for (i = 0; i < op; i++, fso++) {
- int nblocks = fso->fso_bufcnt * blockpp;
- int ndindirect = min(nblocks, addrpp + 1);
- int nindir = nblocks + ndindirect + 1;
-
- needed += nindir;
- }
- return needed + 3 * logs;
- }
-
return 0;
}
-
-static const char *op_quotafile[] = { "lquota.user", "lquota.group" };
-
-#define DQINFO_COPY(out, in) \
-do { \
- Q_COPY(out, in, dqi_bgrace); \
- Q_COPY(out, in, dqi_igrace); \
- Q_COPY(out, in, dqi_flags); \
- Q_COPY(out, in, dqi_valid); \
-} while (0)
-
-#define DQBLK_COPY(out, in) \
-do { \
- Q_COPY(out, in, dqb_bhardlimit); \
- Q_COPY(out, in, dqb_bsoftlimit); \
- Q_COPY(out, in, dqb_curspace); \
- Q_COPY(out, in, dqb_ihardlimit); \
- Q_COPY(out, in, dqb_isoftlimit); \
- Q_COPY(out, in, dqb_curinodes); \
- Q_COPY(out, in, dqb_btime); \
- Q_COPY(out, in, dqb_itime); \
- Q_COPY(out, in, dqb_valid); \
-} while (0)
-
-
-
-static int fsfilt_ext3_quotactl(struct super_block *sb,
- struct obd_quotactl *oqc)
-{
- int i, rc = 0, error = 0;
- struct quotactl_ops *qcop;
- struct if_dqinfo *info;
- struct if_dqblk *dqblk;
- ENTRY;
-
- if (!sb->s_qcop)
- RETURN(-ENOSYS);
-
- OBD_ALLOC_PTR(info);
- if (!info)
- RETURN(-ENOMEM);
- OBD_ALLOC_PTR(dqblk);
- if (!dqblk) {
- OBD_FREE_PTR(info);
- RETURN(-ENOMEM);
- }
-
- DQINFO_COPY(info, &oqc->qc_dqinfo);
- DQBLK_COPY(dqblk, &oqc->qc_dqblk);
-
- qcop = sb->s_qcop;
- if (oqc->qc_cmd == Q_QUOTAON || oqc->qc_cmd == Q_QUOTAOFF) {
- for (i = 0; i < MAXQUOTAS; i++) {
- if (!Q_TYPESET(oqc, i))
- continue;
-
- if (oqc->qc_cmd == Q_QUOTAON) {
- if (!qcop->quota_on)
- GOTO(out, rc = -ENOSYS);
- rc = qcop->quota_on(sb, i, oqc->qc_id,
- (char *)op_quotafile[i]);
- } else if (oqc->qc_cmd == Q_QUOTAOFF) {
- if (!qcop->quota_off)
- GOTO(out, rc = -ENOSYS);
- rc = qcop->quota_off(sb, i);
- }
-
- if (rc == -EBUSY)
- error = rc;
- else if (rc)
- GOTO(out, rc);
- }
- GOTO(out, rc ?: error);
- }
-
- switch (oqc->qc_cmd) {
- case Q_GETOINFO:
- case Q_GETINFO:
- if (!qcop->get_info)
- GOTO(out, rc = -ENOSYS);
- rc = qcop->get_info(sb, oqc->qc_type, info);
- break;
- case Q_SETQUOTA:
- case Q_INITQUOTA:
- if (!qcop->set_dqblk)
- GOTO(out, rc = -ENOSYS);
- rc = qcop->set_dqblk(sb, oqc->qc_type, oqc->qc_id, dqblk);
- break;
- case Q_GETOQUOTA:
- case Q_GETQUOTA:
- if (!qcop->get_dqblk)
- GOTO(out, rc = -ENOSYS);
- rc = qcop->get_dqblk(sb, oqc->qc_type, oqc->qc_id, dqblk);
- break;
- case Q_SYNC:
- if (!sb->s_qcop->quota_sync)
- GOTO(out, rc = -ENOSYS);
- qcop->quota_sync(sb, oqc->qc_type);
- break;
- default:
- CERROR("unsupported quotactl command: %d", oqc->qc_cmd);
- LBUG();
- }
-out:
- DQINFO_COPY(&oqc->qc_dqinfo, info);
- DQBLK_COPY(&oqc->qc_dqblk, dqblk);
-
- OBD_FREE_PTR(info);
- OBD_FREE_PTR(dqblk);
-
- if (rc)
- CDEBUG(D_QUOTA, "quotactl command %#x, id %u, type %d "
- "failed: %d\n",
- oqc->qc_cmd, oqc->qc_id, oqc->qc_type, rc);
- RETURN(rc);
-}
-
-struct chk_dqblk{
- struct hlist_node dqb_hash; /* quotacheck hash */
- struct list_head dqb_list; /* in list also */
- qid_t dqb_id; /* uid/gid */
- short dqb_type; /* USRQUOTA/GRPQUOTA */
- __u32 dqb_bhardlimit; /* block hard limit */
- __u32 dqb_bsoftlimit; /* block soft limit */
- qsize_t dqb_curspace; /* current space */
- __u32 dqb_ihardlimit; /* inode hard limit */
- __u32 dqb_isoftlimit; /* inode soft limit */
- __u32 dqb_curinodes; /* current inodes */
- __u64 dqb_btime; /* block grace time */
- __u64 dqb_itime; /* inode grace time */
- __u32 dqb_valid; /* flag for above fields */
-};
-
-static inline unsigned int chkquot_hash(qid_t id, int type)
- __attribute__((__const__));
-
-static inline unsigned int chkquot_hash(qid_t id, int type)
-{
- return (id * (MAXQUOTAS - type)) % NR_DQHASH;
-}
-
-static inline struct chk_dqblk *
-find_chkquot(struct hlist_head *head, qid_t id, int type)
-{
- struct hlist_node *node;
- struct chk_dqblk *cdqb;
-
- hlist_for_each(node, head) {
- cdqb = hlist_entry(node, struct chk_dqblk, dqb_hash);
- if (cdqb->dqb_id == id && cdqb->dqb_type == type)
- return cdqb;
- }
-
- return NULL;
-}
-
-static struct chk_dqblk *alloc_chkquot(qid_t id, int type)
-{
- struct chk_dqblk *cdqb;
-
- OBD_ALLOC_PTR(cdqb);
- if (cdqb) {
- INIT_HLIST_NODE(&cdqb->dqb_hash);
- INIT_LIST_HEAD(&cdqb->dqb_list);
- cdqb->dqb_id = id;
- cdqb->dqb_type = type;
- }
-
- return cdqb;
-}
-
-static struct chk_dqblk *
-cqget(struct super_block *sb, struct hlist_head *hash, struct list_head *list,
- qid_t id, int type, int first_check)
-{
- struct hlist_head *head = hash + chkquot_hash(id, type);
- struct if_dqblk dqb;
- struct chk_dqblk *cdqb;
- int rc;
-
- cdqb = find_chkquot(head, id, type);
- if (cdqb)
- return cdqb;
-
- cdqb = alloc_chkquot(id, type);
- if (!cdqb)
- return NULL;
-
- if (!first_check) {
- rc = sb->s_qcop->get_dqblk(sb, type, id, &dqb);
- if (rc) {
- CERROR("get_dqblk of id %u, type %d failed: %d\n",
- id, type, rc);
- } else {
- DQBLK_COPY(cdqb, &dqb);
- cdqb->dqb_curspace = 0;
- cdqb->dqb_curinodes = 0;
- }
- }
-
- hlist_add_head(&cdqb->dqb_hash, head);
- list_add_tail(&cdqb->dqb_list, list);
-
- return cdqb;
-}
-
-static inline int quota_onoff(struct super_block *sb, int cmd, int type)
-{
- struct obd_quotactl *oqctl;
- int rc;
-
- OBD_ALLOC_PTR(oqctl);
- if (!oqctl)
- RETURN(-ENOMEM);
-
- oqctl->qc_cmd = cmd;
- oqctl->qc_id = QFMT_LDISKFS;
- oqctl->qc_type = type;
- rc = fsfilt_ext3_quotactl(sb, oqctl);
-
- OBD_FREE_PTR(oqctl);
- return rc;
-}
-
-static inline int read_old_dqinfo(struct super_block *sb, int type,
- struct if_dqinfo *dqinfo)
-{
- struct obd_quotactl *oqctl;
- int rc;
- ENTRY;
-
- OBD_ALLOC_PTR(oqctl);
- if (!oqctl)
- RETURN(-ENOMEM);
-
- oqctl->qc_cmd = Q_GETINFO;
- oqctl->qc_type = type;
- rc = fsfilt_ext3_quotactl(sb, oqctl);
- if (!rc)
- ((struct obd_dqinfo *)dqinfo)[type] = oqctl->qc_dqinfo;
-
- OBD_FREE_PTR(oqctl);
- RETURN(rc);
-}
-
-static inline struct ext3_group_desc *
-get_group_desc(struct super_block *sb, int group)
-{
- unsigned long desc_block, desc;
- struct ext3_group_desc *gdp;
-
- desc_block = group / EXT3_DESC_PER_BLOCK(sb);
- desc = group % EXT3_DESC_PER_BLOCK(sb);
- gdp = (struct ext3_group_desc *)
- EXT3_SB(sb)->s_group_desc[desc_block]->b_data;
-
- return gdp + desc;
-}
-
-static inline struct buffer_head *
-read_inode_bitmap(struct super_block *sb, unsigned long group)
-{
- struct ext3_group_desc *desc;
- struct buffer_head *bh;
-
- desc = get_group_desc(sb, group);
- bh = sb_bread(sb, le32_to_cpu(desc->bg_inode_bitmap));
-
- return bh;
-}
-
-static inline struct inode *ext3_iget_inuse(struct super_block *sb,
- struct buffer_head *bitmap_bh,
- int index, unsigned long ino)
-{
- struct inode *inode = NULL;
-
- if (ext3_test_bit(index, bitmap_bh->b_data))
- inode = iget(sb, ino);
-
- return inode;
-}
-
-struct qchk_ctxt {
- struct hlist_head qckt_hash[NR_DQHASH]; /* quotacheck hash */
- struct list_head qckt_list; /* quotacheck list */
- int qckt_first_check[MAXQUOTAS]; /* 1 if no old quotafile */
- struct if_dqinfo qckt_dqinfo[MAXQUOTAS]; /* old dqinfo */
-};
-
-static int add_inode_quota(struct inode *inode, struct qchk_ctxt *qctxt,
- struct obd_quotactl *oqc)
-{
- struct chk_dqblk *cdqb[MAXQUOTAS] = { NULL, };
- loff_t size = 0;
- qid_t qid[MAXQUOTAS];
- int cnt, i, rc = 0;
-
- if (!inode)
- return 0;
-
- qid[USRQUOTA] = inode->i_uid;
- qid[GRPQUOTA] = inode->i_gid;
-
- if (S_ISDIR(inode->i_mode) ||
- S_ISREG(inode->i_mode) ||
- S_ISLNK(inode->i_mode))
- size = inode_get_bytes(inode);
-
- for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
- if (!Q_TYPESET(oqc, cnt))
- continue;
-
- cdqb[cnt] = cqget(inode->i_sb, qctxt->qckt_hash,
- &qctxt->qckt_list, qid[cnt], cnt,
- qctxt->qckt_first_check[cnt]);
- if (!cdqb[cnt]) {
- rc = -ENOMEM;
- break;
- }
-
- cdqb[cnt]->dqb_curspace += size;
- cdqb[cnt]->dqb_curinodes++;
- }
-
- if (rc) {
- for (i = 0; i < cnt; i++) {
- if (!Q_TYPESET(oqc, i))
- continue;
- LASSERT(cdqb[i]);
- cdqb[i]->dqb_curspace -= size;
- cdqb[i]->dqb_curinodes--;
- }
- }
-
- return rc;
-}
-
-static int v2_write_dqheader(struct file *f, int type)
-{
- static const __u32 quota_magics[] = V2_INITQMAGICS;
- static const __u32 quota_versions[] = V2_INITQVERSIONS;
- struct v2_disk_dqheader dqhead;
- loff_t offset = 0;
-
- CLASSERT(ARRAY_SIZE(quota_magics) == ARRAY_SIZE(quota_versions));
- LASSERT(0 <= type && type < ARRAY_SIZE(quota_magics));
-
- dqhead.dqh_magic = cpu_to_le32(quota_magics[type]);
- dqhead.dqh_version = cpu_to_le32(quota_versions[type]);
-
- return cfs_user_write(f, (char *)&dqhead, sizeof(dqhead), &offset);
-}
-
-/* write dqinfo struct in a new quota file */
-static int v2_write_dqinfo(struct file *f, int type, struct if_dqinfo *info)
-{
- struct v2_disk_dqinfo dqinfo;
- __u32 blocks = V2_DQTREEOFF + 1;
- loff_t offset = V2_DQINFOOFF;
-
- if (info) {
- dqinfo.dqi_bgrace = cpu_to_le32(info->dqi_bgrace);
- dqinfo.dqi_igrace = cpu_to_le32(info->dqi_igrace);
- dqinfo.dqi_flags = cpu_to_le32(info->dqi_flags & DQF_MASK &
- ~DQF_INFO_DIRTY);
- } else {
- dqinfo.dqi_bgrace = cpu_to_le32(MAX_DQ_TIME);
- dqinfo.dqi_igrace = cpu_to_le32(MAX_IQ_TIME);
- dqinfo.dqi_flags = 0;
- }
-
- dqinfo.dqi_blocks = cpu_to_le32(blocks);
- dqinfo.dqi_free_blk = 0;
- dqinfo.dqi_free_entry = 0;
-
- return cfs_user_write(f, (char *)&dqinfo, sizeof(dqinfo), &offset);
-}
-
-static int create_new_quota_files(struct qchk_ctxt *qctxt,
- struct obd_quotactl *oqc)
-{
- int i, rc = 0;
- ENTRY;
-
- for (i = 0; i < MAXQUOTAS; i++) {
- struct if_dqinfo *info = qctxt->qckt_first_check[i]?
- NULL : &qctxt->qckt_dqinfo[i];
- struct file *file;
-
- if (!Q_TYPESET(oqc, i))
- continue;
-
- file = filp_open(op_quotafile[i], O_RDWR | O_CREAT | O_TRUNC,
- 0644);
- if (IS_ERR(file)) {
- rc = PTR_ERR(file);
- CERROR("can't create %s file: rc = %d\n",
- op_quotafile[i], rc);
- GOTO(out, rc);
- }
-
- if (!S_ISREG(file->f_dentry->d_inode->i_mode)) {
- CERROR("file %s is not regular", op_quotafile[i]);
- filp_close(file, 0);
- GOTO(out, rc = -EINVAL);
- }
-
- rc = v2_write_dqheader(file, i);
- if (rc) {
- filp_close(file, 0);
- GOTO(out, rc);
- }
-
- rc = v2_write_dqinfo(file, i, info);
- filp_close(file, 0);
- if (rc)
- GOTO(out, rc);
- }
-
-out:
- RETURN(rc);
-}
-
-
-static int commit_chkquot(struct super_block *sb, struct qchk_ctxt *qctxt,
- struct chk_dqblk *cdqb)
-{
- struct obd_quotactl *oqc;
- long now;
- int rc;
- ENTRY;
-
- OBD_ALLOC_PTR(oqc);
- if (!oqc)
- RETURN(-ENOMEM);
-
- now = CURRENT_SECONDS;
-
- if (cdqb->dqb_bsoftlimit &&
- toqb(cdqb->dqb_curspace) >= cdqb->dqb_bsoftlimit &&
- !cdqb->dqb_btime)
- cdqb->dqb_btime =
- now + qctxt->qckt_dqinfo[cdqb->dqb_type].dqi_bgrace;
-
- if (cdqb->dqb_isoftlimit &&
- cdqb->dqb_curinodes >= cdqb->dqb_isoftlimit &&
- !cdqb->dqb_itime)
- cdqb->dqb_itime =
- now + qctxt->qckt_dqinfo[cdqb->dqb_type].dqi_igrace;
-
- cdqb->dqb_valid = QIF_ALL;
-
- oqc->qc_cmd = Q_SETQUOTA;
- oqc->qc_type = cdqb->dqb_type;
- oqc->qc_id = cdqb->dqb_id;
- DQBLK_COPY(&oqc->qc_dqblk, cdqb);
-
- rc = fsfilt_ext3_quotactl(sb, oqc);
- OBD_FREE_PTR(oqc);
- RETURN(rc);
-}
-
-static int prune_chkquots(struct super_block *sb,
- struct qchk_ctxt *qctxt, int error)
-{
- struct chk_dqblk *cdqb, *tmp;
- int rc;
-
- list_for_each_entry_safe(cdqb, tmp, &qctxt->qckt_list, dqb_list) {
- if (!error) {
- rc = commit_chkquot(sb, qctxt, cdqb);
- if (rc)
- error = rc;
- }
- hlist_del_init(&cdqb->dqb_hash);
- list_del(&cdqb->dqb_list);
- OBD_FREE_PTR(cdqb);
- }
-
- return error;
-}
-
-static int fsfilt_ext3_quotacheck(struct super_block *sb,
- struct obd_quotactl *oqc)
-{
- struct ext3_sb_info *sbi = EXT3_SB(sb);
- int i, group;
- struct qchk_ctxt *qctxt;
- struct buffer_head *bitmap_bh = NULL;
- unsigned long ino;
- struct inode *inode;
- int rc = 0;
- ENTRY;
-
- /* turn on quota and read dqinfo if existed */
- OBD_ALLOC_PTR(qctxt);
- if (!qctxt) {
- oqc->qc_stat = -ENOMEM;
- RETURN(-ENOMEM);
- }
-
- for (i = 0; i < NR_DQHASH; i++)
- INIT_HLIST_HEAD(&qctxt->qckt_hash[i]);
- INIT_LIST_HEAD(&qctxt->qckt_list);
-
- for (i = 0; i < MAXQUOTAS; i++) {
- if (!Q_TYPESET(oqc, i))
- continue;
-
- rc = quota_onoff(sb, Q_QUOTAON, i);
- if (!rc || rc == -EBUSY) {
- rc = read_old_dqinfo(sb, i, qctxt->qckt_dqinfo);
- if (rc)
- GOTO(out, rc);
- } else if (rc == -ENOENT) {
- qctxt->qckt_first_check[i] = 1;
- } else if (rc) {
- GOTO(out, rc);
- }
- }
-
- /* check quota and update in hash */
- for (group = 0; group < sbi->s_groups_count; group++) {
- ino = group * sbi->s_inodes_per_group + 1;
- bitmap_bh = read_inode_bitmap(sb, group);
- if (!bitmap_bh) {
- CERROR("read_inode_bitmap group %d failed", group);
- GOTO(out, rc = -EIO);
- }
-
- for (i = 0; i < sbi->s_inodes_per_group; i++, ino++) {
- if (ino < sbi->s_first_ino)
- continue;
-
- inode = ext3_iget_inuse(sb, bitmap_bh, i, ino);
- rc = add_inode_quota(inode, qctxt, oqc);
- iput(inode);
- if (rc) {
- brelse(bitmap_bh);
- GOTO(out, rc);
- }
- }
-
- brelse(bitmap_bh);
- }
-
- /* read old quota limits from old quota file. (only for the user
- * has limits but hasn't file) */
-#ifdef HAVE_QUOTA_SUPPORT
- for (i = 0; i < MAXQUOTAS; i++) {
- struct list_head id_list;
- struct dquot_id *dqid, *tmp;
-
- if (!Q_TYPESET(oqc, i))
- continue;
-
- if (qctxt->qckt_first_check[i])
- continue;
-
-
- LASSERT(sb_dqopt(sb)->files[i] != NULL);
- INIT_LIST_HEAD(&id_list);
-#ifndef KERNEL_SUPPORTS_QUOTA_READ
- rc = lustre_get_qids(sb_dqopt(sb)->files[i], NULL, i, &id_list);
-#else
- rc = lustre_get_qids(NULL, sb_dqopt(sb)->files[i], i, &id_list);
-#endif
- if (rc)
- CERROR("read old limits failed. (rc:%d)\n", rc);
-
- list_for_each_entry_safe(dqid, tmp, &id_list, di_link) {
- list_del_init(&dqid->di_link);
-
- if (!rc)
- cqget(sb, qctxt->qckt_hash, &qctxt->qckt_list,
- dqid->di_id, i,
- qctxt->qckt_first_check[i]);
- kfree(dqid);
- }
- }
-#endif
- /* turn off quota cause we are to dump chk_dqblk to files */
- quota_onoff(sb, Q_QUOTAOFF, oqc->qc_type);
-
- rc = create_new_quota_files(qctxt, oqc);
- if (rc)
- GOTO(out, rc);
-
- /* we use vfs functions to set dqblk, so turn quota on */
- rc = quota_onoff(sb, Q_QUOTAON, oqc->qc_type);
-out:
- /* dump and free chk_dqblk */
- rc = prune_chkquots(sb, qctxt, rc);
- OBD_FREE_PTR(qctxt);
-
- /* turn off quota, `lfs quotacheck` will turn on when all
- * nodes quotacheck finish. */
- quota_onoff(sb, Q_QUOTAOFF, oqc->qc_type);
-
- oqc->qc_stat = rc;
- if (rc)
- CERROR("quotacheck failed: rc = %d\n", rc);
-
- RETURN(rc);
-}
-
-#ifdef HAVE_QUOTA_SUPPORT
-static int fsfilt_ext3_quotainfo(struct lustre_quota_info *lqi, int type,
- int cmd)
-{
- int rc = 0;
- ENTRY;
-
- if (lqi->qi_files[type] == NULL) {
- CERROR("operate qinfo before it's enabled!\n");
- RETURN(-EIO);
- }
-
- switch (cmd) {
- case QFILE_CHK:
- rc = lustre_check_quota_file(lqi, type);
- break;
- case QFILE_RD_INFO:
- rc = lustre_read_quota_info(lqi, type);
- break;
- case QFILE_WR_INFO:
- rc = lustre_write_quota_info(lqi, type);
- break;
- case QFILE_INIT_INFO:
- rc = lustre_init_quota_info(lqi, type);
- break;
- default:
- CERROR("Unsupported admin quota file cmd %d\n", cmd);
- LBUG();
- break;
- }
- RETURN(rc);
-}
-
-static int fsfilt_ext3_qids(struct file *file, struct inode *inode, int type,
- struct list_head *list)
-{
- return lustre_get_qids(file, inode, type, list);
-}
-
-static int fsfilt_ext3_dquot(struct lustre_dquot *dquot, int cmd)
-{
- int rc = 0;
- ENTRY;
-
- if (dquot->dq_info->qi_files[dquot->dq_type] == NULL) {
- CERROR("operate dquot before it's enabled!\n");
- RETURN(-EIO);
- }
-
- switch (cmd) {
- case QFILE_RD_DQUOT:
- rc = lustre_read_dquot(dquot);
- break;
- case QFILE_WR_DQUOT:
- if (dquot->dq_dqb.dqb_ihardlimit ||
- dquot->dq_dqb.dqb_isoftlimit ||
- dquot->dq_dqb.dqb_bhardlimit ||
- dquot->dq_dqb.dqb_bsoftlimit)
- clear_bit(DQ_FAKE_B, &dquot->dq_flags);
- else
- set_bit(DQ_FAKE_B, &dquot->dq_flags);
-
- rc = lustre_commit_dquot(dquot);
- if (rc >= 0)
- rc = 0;
- break;
- default:
- CERROR("Unsupported admin quota file cmd %d\n", cmd);
- LBUG();
- break;
- }
- RETURN(rc);
-}
-#endif
-
-lvfs_sbdev_type fsfilt_ext3_journal_sbdev(struct super_block *sb)
-{
- return (EXT3_SB(sb)->journal_bdev);
-}
-EXPORT_SYMBOL(fsfilt_ext3_journal_sbdev);
-
static struct fsfilt_operations fsfilt_ext3_ops = {
.fs_type = "ext3",
.fs_owner = THIS_MODULE,
.fs_getlabel = fsfilt_ext3_get_label,
- .fs_setlabel = fsfilt_ext3_set_label,
- .fs_uuid = fsfilt_ext3_uuid,
.fs_start = fsfilt_ext3_start,
- .fs_brw_start = fsfilt_ext3_brw_start,
- .fs_extend = fsfilt_ext3_extend,
.fs_commit = fsfilt_ext3_commit,
- .fs_commit_async = fsfilt_ext3_commit_async,
- .fs_commit_wait = fsfilt_ext3_commit_wait,
- .fs_setattr = fsfilt_ext3_setattr,
- .fs_iocontrol = fsfilt_ext3_iocontrol,
- .fs_set_md = fsfilt_ext3_set_md,
- .fs_get_md = fsfilt_ext3_get_md,
- .fs_readpage = fsfilt_ext3_readpage,
- .fs_add_journal_cb = fsfilt_ext3_add_journal_cb,
- .fs_statfs = fsfilt_ext3_statfs,
- .fs_sync = fsfilt_ext3_sync,
.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_send_bio = fsfilt_ext3_send_bio,
- .fs_get_op_len = fsfilt_ext3_get_op_len,
- .fs_quotactl = fsfilt_ext3_quotactl,
- .fs_quotacheck = fsfilt_ext3_quotacheck,
-#ifdef HAVE_DISK_INODE_VERSION
- .fs_get_version = fsfilt_ext3_get_version,
- .fs_set_version = fsfilt_ext3_set_version,
-#endif
-#ifdef HAVE_QUOTA_SUPPORT
- .fs_quotainfo = fsfilt_ext3_quotainfo,
- .fs_qids = fsfilt_ext3_qids,
- .fs_dquot = fsfilt_ext3_dquot,
-#endif
- .fs_journal_sbdev = fsfilt_ext3_journal_sbdev,
};
static int __init fsfilt_ext3_init(void)
module_init(fsfilt_ext3_init);
module_exit(fsfilt_ext3_exit);
-MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
+MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
MODULE_DESCRIPTION("Lustre ext3 Filesystem Helper v0.1");
MODULE_LICENSE("GPL");
git://git.whamcloud.com / fs / lustre-release.git / blobdiff