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 (is_journal_aborted(EXT3_JOURNAL(inode)))
+ 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;
}
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(2,5,0))
#define ext3_up_truncate_sem(inode) up_write(&EXT3_I(inode)->truncate_sem);
int init_num;
int create;
};
+
static int ext3_ext_find_goal(struct inode *inode, struct ext3_ext_path *path,
- unsigned long block, int *aflags)
+ 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)) {
#if 0
* 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);
}
-
+
/* 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);
+ (EXT3_BLOCKS_PER_GROUP(inode->i_sb) / 16);
return bg_start + colour + block;
}
static int ext3_ext_new_extent_cb(struct ext3_extents_tree *tree,
struct ext3_ext_path *path,
- struct ext3_extent *newex, int exist)
+ struct ext3_ext_cache *cex)
{
struct inode *inode = tree->inode;
struct bpointers *bp = tree->private;
+ struct ext3_extent nex;
int count, err, goal;
unsigned long pblock;
- unsigned long tgen;
loff_t new_i_size;
handle_t *handle;
int i, aflags = 0;
-
+
i = EXT_DEPTH(tree);
EXT_ASSERT(i == path->p_depth);
EXT_ASSERT(path[i].p_hdr);
-
- if (exist) {
+
+ if (cex->ec_type == EXT3_EXT_CACHE_EXTENT) {
err = EXT_CONTINUE;
goto map;
}
-
+
if (bp->create == 0) {
i = 0;
- if (newex->ee_block < bp->start)
- i = bp->start - newex->ee_block;
- if (i >= newex->ee_len)
+ 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, newex->ee_len);
- for (; i < newex->ee_len && bp->num; i++) {
+ i, cex->ec_len);
+ for (; i < cex->ec_len && bp->num; i++) {
*(bp->created) = 0;
bp->created++;
*(bp->blocks) = 0;
bp->num--;
bp->start++;
}
-
+
return EXT_CONTINUE;
}
- tgen = EXT_GENERATION(tree);
+
count = ext3_ext_calc_credits_for_insert(tree, path);
- ext3_up_truncate_sem(inode);
+
lock_24kernel();
- handle = journal_start(EXT3_JOURNAL(inode), count + EXT3_ALLOC_NEEDED + 1);
+ handle = journal_start(EXT3_JOURNAL(inode), count+EXT3_ALLOC_NEEDED+1);
unlock_24kernel();
- if (IS_ERR(handle)) {
- ext3_down_truncate_sem(inode);
+ if (IS_ERR(handle))
return PTR_ERR(handle);
- }
-
- if (tgen != EXT_GENERATION(tree)) {
- /* the tree has changed. so path can be invalid at moment */
- lock_24kernel();
- journal_stop(handle);
- unlock_24kernel();
- ext3_down_truncate_sem(inode);
- return EXT_REPEAT;
- }
- ext3_down_truncate_sem(inode);
- count = newex->ee_len;
- goal = ext3_ext_find_goal(inode, path, newex->ee_block, &aflags);
+
+ count = cex->ec_len;
+ goal = ext3_ext_find_goal(inode, path, cex->ec_block, &aflags);
aflags |= 2; /* block have been already reserved */
+ lock_24kernel();
pblock = ext3_mb_new_blocks(handle, inode, goal, &count, aflags, &err);
+ unlock_24kernel();
if (!pblock)
goto out;
- EXT_ASSERT(count <= newex->ee_len);
-
+ EXT_ASSERT(count <= cex->ec_len);
+
/* insert new extent */
- newex->ee_start = pblock;
- newex->ee_len = count;
- err = ext3_ext_insert_extent(handle, tree, path, newex);
+ nex.ee_block = cex->ec_block;
+ nex.ee_start = pblock;
+ nex.ee_len = count;
+ err = ext3_ext_insert_extent(handle, tree, path, &nex);
if (err)
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 = nex.ee_len;
+ cex->ec_start = nex.ee_start;
+ BUG_ON(nex.ee_len == 0);
+ BUG_ON(nex.ee_block != cex->ec_block);
+
/* correct on-disk inode size */
- if (newex->ee_len > 0) {
- new_i_size = (loff_t) newex->ee_block + newex->ee_len;
+ if (nex.ee_len > 0) {
+ new_i_size = (loff_t) nex.ee_block + nex.ee_len;
new_i_size = new_i_size << inode->i_blkbits;
if (new_i_size > EXT3_I(inode)->i_disksize) {
EXT3_I(inode)->i_disksize = new_i_size;
err = ext3_mark_inode_dirty(handle, inode);
}
}
+
out:
lock_24kernel();
journal_stop(handle);
unlock_24kernel();
map:
if (err >= 0) {
+ struct block_device *bdev = inode->i_sb->s_bdev;
+
/* 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);
CERROR("current extent: %u/%u/%u %d\n",
- newex->ee_block, newex->ee_len,
- newex->ee_start, exist);
+ cex->ec_block, cex->ec_len,
+ cex->ec_start, cex->ec_type);
}
i = 0;
- if (newex->ee_block < bp->start)
- i = bp->start - newex->ee_block;
- if (i >= newex->ee_len)
+ 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, newex->ee_len);
- for (; i < newex->ee_len && bp->num; i++) {
- *(bp->created) = (exist == 0 ? 1 : 0);
+ i, cex->ec_len);
+ for (; i < cex->ec_len && bp->num; i++) {
+ *(bp->blocks) = cex->ec_start + i;
+ if (cex->ec_type == EXT3_EXT_CACHE_EXTENT) {
+ *(bp->created) = 0;
+ } else {
+ *(bp->created) = 1;
+ /* unmap any possible underlying metadata from
+ * the block device mapping. bug 6998.
+ * This only compiles on 2.6, but there are
+ * no users of mballoc on 2.4. */
+ unmap_underlying_metadata(bdev, *(bp->blocks));
+ }
bp->created++;
- *(bp->blocks) = newex->ee_start + i;
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 *created, int create)
{
struct ext3_extents_tree tree;
struct bpointers bp;
- int err, i;
-
+ int err;
+
CDEBUG(D_OTHER, "blocks %lu-%lu requested for inode %u\n",
block, block + num, (unsigned) inode->i_ino);
-
+
ext3_init_tree_desc(&tree, inode);
tree.private = &bp;
bp.blocks = blocks;
bp.start = block;
bp.init_num = bp.num = num;
bp.create = create;
-
- ext3_down_truncate_sem(inode);
+
err = ext3_ext_walk_space(&tree, block, num, ext3_ext_new_extent_cb);
ext3_ext_invalidate_cache(&tree);
- ext3_up_truncate_sem(inode);
- /* unmap underlying pages/buffers from blockdevice mapping */
- if (create) {
- struct block_device *bdev = inode->i_sb->s_bdev;
- for (i = 0; i < num; i++) {
- if (created[i] == 0)
- continue;
- unmap_underlying_metadata(bdev, blocks[i]);
- }
- }
return err;
}
loff_t new_size = inode->i_size;
journal_t *journal;
handle_t *handle;
- int err = 0, block_count = 0, blocksize, size, boffs;
+ int err, block_count = 0, blocksize, size, boffs;
/* Determine how many transaction credits are needed */
blocksize = 1 << inode->i_blkbits;
}
+#if 0
#define EXTENTS_EA "write_extents"
#define EXTENTS_EA_SIZE 64
EXTENTS_EA, size);
return rc;
}
+#endif
static struct fsfilt_operations fsfilt_ext3_ops = {
.fs_type = "ext3",
.fs_get_op_len = fsfilt_ext3_get_op_len,
.fs_add_dir_entry = fsfilt_ext3_add_dir_entry,
.fs_del_dir_entry = fsfilt_ext3_del_dir_entry,
+#if 0
.fs_init_extents_ea = fsfilt_ext3_init_extents_ea,
.fs_insert_extents_ea = fsfilt_ext3_insert_extents_ea,
.fs_remove_extents_ea = fsfilt_ext3_remove_extents_ea,
.fs_get_inode_write_extents = fsfilt_ext3_get_inode_write_extents,
.fs_get_write_extents_num = fsfilt_ext3_get_write_extents_num,
+#endif
};
static int __init fsfilt_ext3_init(void)
git://git.whamcloud.com / fs / lustre-release.git / blobdiff