diff options
Diffstat (limited to 'fs/ocfs2')
| -rw-r--r-- | fs/ocfs2/alloc.c | 245 | ||||
| -rw-r--r-- | fs/ocfs2/alloc.h | 6 | ||||
| -rw-r--r-- | fs/ocfs2/aops.c | 173 | ||||
| -rw-r--r-- | fs/ocfs2/aops.h | 4 | ||||
| -rw-r--r-- | fs/ocfs2/file.c | 99 | ||||
| -rw-r--r-- | fs/ocfs2/inode.c | 4 | ||||
| -rw-r--r-- | fs/ocfs2/journal.h | 3 |
7 files changed, 526 insertions, 8 deletions
diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c index c81bfdfb992..72cefe25382 100644 --- a/fs/ocfs2/alloc.c +++ b/fs/ocfs2/alloc.c @@ -3726,6 +3726,8 @@ int ocfs2_insert_extent(struct ocfs2_super *osb, struct ocfs2_insert_type insert = {0, }; struct ocfs2_extent_rec rec; + BUG_ON(OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL); + mlog(0, "add %u clusters at position %u to inode %llu\n", new_clusters, cpos, (unsigned long long)OCFS2_I(inode)->ip_blkno); @@ -5826,6 +5828,174 @@ out: return ret; } +static void ocfs2_zero_dinode_id2(struct inode *inode, struct ocfs2_dinode *di) +{ + unsigned int blocksize = 1 << inode->i_sb->s_blocksize_bits; + + memset(&di->id2, 0, blocksize - offsetof(struct ocfs2_dinode, id2)); +} + +void ocfs2_set_inode_data_inline(struct inode *inode, struct ocfs2_dinode *di) +{ + struct ocfs2_inode_info *oi = OCFS2_I(inode); + struct ocfs2_inline_data *idata = &di->id2.i_data; + + spin_lock(&oi->ip_lock); + oi->ip_dyn_features |= OCFS2_INLINE_DATA_FL; + di->i_dyn_features = cpu_to_le16(oi->ip_dyn_features); + spin_unlock(&oi->ip_lock); + + /* + * We clear the entire i_data structure here so that all + * fields can be properly initialized. + */ + ocfs2_zero_dinode_id2(inode, di); + + idata->id_count = cpu_to_le16(ocfs2_max_inline_data(inode->i_sb)); +} + +int ocfs2_convert_inline_data_to_extents(struct inode *inode, + struct buffer_head *di_bh) +{ + int ret, i, has_data, num_pages = 0; + handle_t *handle; + u64 uninitialized_var(block); + struct ocfs2_inode_info *oi = OCFS2_I(inode); + struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); + struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data; + struct ocfs2_extent_list *el = &di->id2.i_list; + struct ocfs2_alloc_context *data_ac = NULL; + struct page **pages = NULL; + loff_t end = osb->s_clustersize; + + has_data = i_size_read(inode) ? 1 : 0; + + if (has_data) { + pages = kcalloc(ocfs2_pages_per_cluster(osb->sb), + sizeof(struct page *), GFP_NOFS); + if (pages == NULL) { + ret = -ENOMEM; + mlog_errno(ret); + goto out; + } + + ret = ocfs2_reserve_clusters(osb, 1, &data_ac); + if (ret) { + mlog_errno(ret); + goto out; + } + } + + handle = ocfs2_start_trans(osb, OCFS2_INLINE_TO_EXTENTS_CREDITS); + if (IS_ERR(handle)) { + ret = PTR_ERR(handle); + mlog_errno(ret); + goto out_unlock; + } + + ret = ocfs2_journal_access(handle, inode, di_bh, + OCFS2_JOURNAL_ACCESS_WRITE); + if (ret) { + mlog_errno(ret); + goto out_commit; + } + + if (has_data) { + u32 bit_off, num; + unsigned int page_end; + u64 phys; + + ret = ocfs2_claim_clusters(osb, handle, data_ac, 1, &bit_off, + &num); + if (ret) { + mlog_errno(ret); + goto out_commit; + } + + /* + * Save two copies, one for insert, and one that can + * be changed by ocfs2_map_and_dirty_page() below. + */ + block = phys = ocfs2_clusters_to_blocks(inode->i_sb, bit_off); + + /* + * Non sparse file systems zero on extend, so no need + * to do that now. + */ + if (!ocfs2_sparse_alloc(osb) && + PAGE_CACHE_SIZE < osb->s_clustersize) + end = PAGE_CACHE_SIZE; + + ret = ocfs2_grab_eof_pages(inode, 0, end, pages, &num_pages); + if (ret) { + mlog_errno(ret); + goto out_commit; + } + + /* + * This should populate the 1st page for us and mark + * it up to date. + */ + ret = ocfs2_read_inline_data(inode, pages[0], di_bh); + if (ret) { + mlog_errno(ret); + goto out_commit; + } + + page_end = PAGE_CACHE_SIZE; + if (PAGE_CACHE_SIZE > osb->s_clustersize) + page_end = osb->s_clustersize; + + for (i = 0; i < num_pages; i++) + ocfs2_map_and_dirty_page(inode, handle, 0, page_end, + pages[i], i > 0, &phys); + } + + spin_lock(&oi->ip_lock); + oi->ip_dyn_features &= ~OCFS2_INLINE_DATA_FL; + di->i_dyn_features = cpu_to_le16(oi->ip_dyn_features); + spin_unlock(&oi->ip_lock); + + ocfs2_zero_dinode_id2(inode, di); + + el->l_tree_depth = 0; + el->l_next_free_rec = 0; + el->l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(inode->i_sb)); + + ocfs2_journal_dirty(handle, di_bh); + + if (has_data) { + /* + * An error at this point should be extremely rare. If + * this proves to be false, we could always re-build + * the in-inode data from our pages. + */ + ret = ocfs2_insert_extent(osb, handle, inode, di_bh, + 0, block, 1, 0, NULL); + if (ret) { + mlog_errno(ret); + goto out_commit; + } + + inode->i_blocks = ocfs2_inode_sector_count(inode); + } + +out_commit: + ocfs2_commit_trans(osb, handle); + +out_unlock: + if (data_ac) + ocfs2_free_alloc_context(data_ac); + +out: + if (pages) { + ocfs2_unlock_and_free_pages(pages, num_pages); + kfree(pages); + } + + return ret; +} + /* * It is expected, that by the time you call this function, * inode->i_size and fe->i_size have been adjusted. @@ -6051,6 +6221,81 @@ bail: return status; } +/* + * 'start' is inclusive, 'end' is not. + */ +int ocfs2_truncate_inline(struct inode *inode, struct buffer_head *di_bh, + unsigned int start, unsigned int end, int trunc) +{ + int ret; + unsigned int numbytes; + handle_t *handle; + struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); + struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data; + struct ocfs2_inline_data *idata = &di->id2.i_data; + + if (end > i_size_read(inode)) + end = i_size_read(inode); + + BUG_ON(start >= end); + + if (!(OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL) || + !(le16_to_cpu(di->i_dyn_features) & OCFS2_INLINE_DATA_FL) || + !ocfs2_supports_inline_data(osb)) { + ocfs2_error(inode->i_sb, + "Inline data flags for inode %llu don't agree! " + "Disk: 0x%x, Memory: 0x%x, Superblock: 0x%x\n", + (unsigned long long)OCFS2_I(inode)->ip_blkno, + le16_to_cpu(di->i_dyn_features), + OCFS2_I(inode)->ip_dyn_features, + osb->s_feature_incompat); + ret = -EROFS; + goto out; + } + + handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS); + if (IS_ERR(handle)) { + ret = PTR_ERR(handle); + mlog_errno(ret); + goto out; + } + + ret = ocfs2_journal_access(handle, inode, di_bh, + OCFS2_JOURNAL_ACCESS_WRITE); + if (ret) { + mlog_errno(ret); + goto out_commit; + } + + numbytes = end - start; + memset(idata->id_data + start, 0, numbytes); + + /* + * No need to worry about the data page here - it's been + * truncated already and inline data doesn't need it for + * pushing zero's to disk, so we'll let readpage pick it up + * later. + */ + if (trunc) { + i_size_write(inode, start); + di->i_size = cpu_to_le64(start); + } + + inode->i_blocks = ocfs2_inode_sector_count(inode); + inode->i_ctime = inode->i_mtime = CURRENT_TIME; + + di->i_ctime = di->i_mtime = cpu_to_le64(inode->i_ctime.tv_sec); + di->i_ctime_nsec = di->i_mtime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); + + ocfs2_journal_dirty(handle, di_bh); + +out_commit: + ocfs2_commit_trans(osb, handle); + +out: + return ret; +} + static void ocfs2_free_truncate_context(struct ocfs2_truncate_context *tc) { /* diff --git a/fs/ocfs2/alloc.h b/fs/ocfs2/alloc.h index 990df48ae8d..826e0a6cf5c 100644 --- a/fs/ocfs2/alloc.h +++ b/fs/ocfs2/alloc.h @@ -62,6 +62,10 @@ static inline int ocfs2_extend_meta_needed(struct ocfs2_dinode *fe) return le16_to_cpu(fe->id2.i_list.l_tree_depth) + 2; } +void ocfs2_set_inode_data_inline(struct inode *inode, struct ocfs2_dinode *di); +int ocfs2_convert_inline_data_to_extents(struct inode *inode, + struct buffer_head *di_bh); + int ocfs2_truncate_log_init(struct ocfs2_super *osb); void ocfs2_truncate_log_shutdown(struct ocfs2_super *osb); void ocfs2_schedule_truncate_log_flush(struct ocfs2_super *osb, @@ -115,6 +119,8 @@ int ocfs2_commit_truncate(struct ocfs2_super *osb, struct inode *inode, struct buffer_head *fe_bh, struct ocfs2_truncate_context *tc); +int ocfs2_truncate_inline(struct inode *inode, struct buffer_head *di_bh, + unsigned int start, unsigned int end, int trunc); int ocfs2_find_leaf(struct inode *inode, struct ocfs2_extent_list *root_el, u32 cpos, struct buffer_head **leaf_bh); diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c index fef0186a91c..34d10452c56 100644 --- a/fs/ocfs2/aops.c +++ b/fs/ocfs2/aops.c @@ -206,8 +206,8 @@ bail: return err; } -static int ocfs2_read_inline_data(struct inode *inode, struct page *page, - struct buffer_head *di_bh) +int ocfs2_read_inline_data(struct inode *inode, struct page *page, + struct buffer_head *di_bh) { void *kaddr; unsigned int size; @@ -1432,6 +1432,130 @@ out: return ret; } +static int ocfs2_write_begin_inline(struct address_space *mapping, + struct inode *inode, + struct ocfs2_write_ctxt *wc) +{ + int ret; + struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); + struct page *page; + handle_t *handle; + struct ocfs2_dinode *di = (struct ocfs2_dinode *)wc->w_di_bh->b_data; + + page = find_or_create_page(mapping, 0, GFP_NOFS); + if (!page) { + ret = -ENOMEM; + mlog_errno(ret); + goto out; + } + /* + * If we don't set w_num_pages then this page won't get unlocked + * and freed on cleanup of the write context. + */ + wc->w_pages[0] = wc->w_target_page = page; + wc->w_num_pages = 1; + + handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS); + if (IS_ERR(handle)) { + ret = PTR_ERR(handle); + mlog_errno(ret); + goto out; + } + + ret = ocfs2_journal_access(handle, inode, wc->w_di_bh, + OCFS2_JOURNAL_ACCESS_WRITE); + if (ret) { + ocfs2_commit_trans(osb, handle); + + mlog_errno(ret); + goto out; + } + + if (!(OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL)) + ocfs2_set_inode_data_inline(inode, di); + + if (!PageUptodate(page)) { + ret = ocfs2_read_inline_data(inode, page, wc->w_di_bh); + if (ret) { + ocfs2_commit_trans(osb, handle); + + goto out; + } + } + + wc->w_handle = handle; +out: + return ret; +} + +int ocfs2_size_fits_inline_data(struct buffer_head *di_bh, u64 new_size) +{ + struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data; + + if (new_size < le16_to_cpu(di->id2.i_data.id_count)) + return 1; + return 0; +} + +static int ocfs2_try_to_write_inline_data(struct address_space *mapping, + struct inode *inode, loff_t pos, + unsigned len, struct page *mmap_page, + struct ocfs2_write_ctxt *wc) +{ + int ret, written = 0; + loff_t end = pos + len; + struct ocfs2_inode_info *oi = OCFS2_I(inode); + + mlog(0, "Inode %llu, write of %u bytes at off %llu. features: 0x%x\n", + (unsigned long long)oi->ip_blkno, len, (unsigned long long)pos, + oi->ip_dyn_features); + + /* + * Handle inodes which already have inline data 1st. + */ + if (oi->ip_dyn_features & OCFS2_INLINE_DATA_FL) { + if (mmap_page == NULL && + ocfs2_size_fits_inline_data(wc->w_di_bh, end)) + goto do_inline_write; + + /* + * The write won't fit - we have to give this inode an + * inline extent list now. + */ + ret = ocfs2_convert_inline_data_to_extents(inode, wc->w_di_bh); + if (ret) + mlog_errno(ret); + goto out; + } + + /* + * Check whether the inode can accept inline data. + */ + if (oi->ip_clusters != 0 || i_size_read(inode) != 0) + return 0; + + /* + * Check whether the write can fit. + */ + if (mmap_page || end > ocfs2_max_inline_data(inode->i_sb)) + return 0; + +do_inline_write: + ret = ocfs2_write_begin_inline(mapping, inode, wc); + if (ret) { + mlog_errno(ret); + goto out; + } + + /* + * This signals to the caller that the data can be written + * inline. + */ + written = 1; +out: + return written ? written : ret; +} + /* * This function only does anything for file systems which can't * handle sparse files. @@ -1483,6 +1607,19 @@ int ocfs2_write_begin_nolock(struct address_space *mapping, return ret; } + if (ocfs2_supports_inline_data(osb)) { + ret = ocfs2_try_to_write_inline_data(mapping, inode, pos, len, + mmap_page, wc); + if (ret == 1) { + ret = 0; + goto success; + } + if (ret < 0) { + mlog_errno(ret); + goto out; + } + } + ret = ocfs2_expand_nonsparse_inode(inode, pos, len, wc); if (ret) { mlog_errno(ret); @@ -1570,6 +1707,7 @@ int ocfs2_write_begin_nolock(struct address_space *mapping, if (meta_ac) ocfs2_free_alloc_context(meta_ac); +success: *pagep = wc->w_target_page; *fsdata = wc; return 0; @@ -1637,6 +1775,31 @@ out_fail: return ret; } +static void ocfs2_write_end_inline(struct inode *inode, loff_t pos, + unsigned len, unsigned *copied, + struct ocfs2_dinode *di, + struct ocfs2_write_ctxt *wc) +{ + void *kaddr; + + if (unlikely(*copied < len)) { + if (!PageUptodate(wc->w_target_page)) { + *copied = 0; + return; + } + } + + kaddr = kmap_atomic(wc->w_target_page, KM_USER0); + memcpy(di->id2.i_data.id_data + pos, kaddr + pos, *copied); + kunmap_atomic(kaddr, KM_USER0); + + mlog(0, "Data written to inode at offset %llu. " + "id_count = %u, copied = %u, i_dyn_features = 0x%x\n", + (unsigned long long)pos, *copied, + le16_to_cpu(di->id2.i_data.id_count), + le16_to_cpu(di->i_dyn_features)); +} + int ocfs2_write_end_nolock(struct address_space *mapping, loff_t pos, unsigned len, unsigned copied, struct page *page, void *fsdata) @@ -1650,6 +1813,11 @@ int ocfs2_write_end_nolock(struct address_space *mapping, handle_t *handle = wc->w_handle; struct page *tmppage; + if (OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL) { + ocfs2_write_end_inline(inode, pos, len, &copied, di, wc); + goto out_write_size; + } + if (unlikely(copied < len)) { if (!PageUptodate(wc->w_target_page)) copied = 0; @@ -1687,6 +1855,7 @@ int ocfs2_write_end_nolock(struct address_space *mapping, block_commit_write(tmppage, from, to); } +out_write_size: pos += copied; if (pos > inode->i_size) { i_size_write(inode, pos); diff --git a/fs/ocfs2/aops.h b/fs/ocfs2/aops.h index b4fa37d40db..113560877db 100644 --- a/fs/ocfs2/aops.h +++ b/fs/ocfs2/aops.h @@ -61,6 +61,10 @@ int ocfs2_write_begin_nolock(struct address_space *mapping, struct page **pagep, void **fsdata, struct buffer_head *di_bh, struct page *mmap_page); +int ocfs2_read_inline_data(struct inode *inode, struct page *page, + struct buffer_head *di_bh); +int ocfs2_size_fits_inline_data(struct buffer_head *di_bh, u64 new_size); + /* all ocfs2_dio_end_io()'s fault */ #define ocfs2_iocb_is_rw_locked(iocb) \ test_bit(0, (unsigned long *)&iocb->private) diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c index 781ba6c4ef8..a62b14eb406 100644 --- a/fs/ocfs2/file.c +++ b/fs/ocfs2/file.c @@ -397,6 +397,15 @@ static int ocfs2_truncate_file(struct inode *inode, unmap_mapping_range(inode->i_mapping, new_i_size + PAGE_SIZE - 1, 0, 1); truncate_inode_pages(inode->i_mapping, new_i_size); + if (OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL) { + status = ocfs2_truncate_inline(inode, di_bh, new_i_size, + i_size_read(inode), 0); + if (status) + mlog_errno(status); + + goto bail_unlock_data; + } + /* alright, we're going to need to do a full blown alloc size * change. Orphan the inode so that recovery can complete the * truncate if necessary. This does the task of marking @@ -908,7 +917,8 @@ static int ocfs2_extend_file(struct inode *inode, struct buffer_head *di_bh, u64 new_i_size) { - int ret = 0; + int ret = 0, data_locked = 0; + struct ocfs2_inode_info *oi = OCFS2_I(inode); BUG_ON(!di_bh); @@ -920,7 +930,17 @@ static int ocfs2_extend_file(struct inode *inode, goto out; BUG_ON(new_i_size < i_size_read(inode)); - if (ocfs2_sparse_alloc(OCFS2_SB(inode->i_sb))) + /* + * Fall through for converting inline data, even if the fs + * supports sparse files. + * + * The check for inline data here is legal - nobody can add + * the feature since we have i_mutex. We must check it again + * after acquiring ip_alloc_sem though, as paths like mmap + * might have raced us to converting the inode to extents. + */ + if (!(oi->ip_dyn_features & OCFS2_INLINE_DATA_FL) + && ocfs2_sparse_alloc(OCFS2_SB(inode->i_sb))) goto out_update_size; /* @@ -935,6 +955,7 @@ static int ocfs2_extend_file(struct inode *inode, mlog_errno(ret); goto out; } + data_locked = 1; /* * The alloc sem blocks people in read/write from reading our @@ -942,9 +963,31 @@ static int ocfs2_extend_file(struct inode *inode, * i_mutex to block other extend/truncate calls while we're * here. */ - down_write(&OCFS2_I(inode)->ip_alloc_sem); - ret = ocfs2_extend_no_holes(inode, new_i_size, new_i_size); - up_write(&OCFS2_I(inode)->ip_alloc_sem); + down_write(&oi->ip_alloc_sem); + + if (oi->ip_dyn_features & OCFS2_INLINE_DATA_FL) { + /* + * We can optimize small extends by keeping the inodes + * inline data. + */ + if (ocfs2_size_fits_inline_data(di_bh, new_i_size)) { + up_write(&oi->ip_alloc_sem); + goto out_update_size; + } + + ret = ocfs2_convert_inline_data_to_extents(inode, di_bh); + if (ret) { + up_write(&oi->ip_alloc_sem); + + mlog_errno(ret); + goto out_unlock; + } + } + + if (!ocfs2_sparse_alloc(OCFS2_SB(inode->i_sb))) + ret = ocfs2_extend_no_holes(inode, new_i_size, new_i_size); + + up_write(&oi->ip_alloc_sem); if (ret < 0) { mlog_errno(ret); @@ -957,7 +1000,7 @@ out_update_size: mlog_errno(ret); out_unlock: - if (!ocfs2_sparse_alloc(OCFS2_SB(inode->i_sb))) + if (data_locked) ocfs2_data_unlock(inode, 1); out: @@ -1231,6 +1274,31 @@ static int ocfs2_allocate_unwritten_extents(struct inode *inode, { int ret; u32 cpos, phys_cpos, clusters, alloc_size; + u64 end = start + len; + struct buffer_head *di_bh = NULL; + + if (OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL) { + ret = ocfs2_read_block(OCFS2_SB(inode->i_sb), + OCFS2_I(inode)->ip_blkno, &di_bh, + OCFS2_BH_CACHED, inode); + if (ret) { + mlog_errno(ret); + goto out; + } + + /* + * Nothing to do if the requested reservation range + * fits within the inode. + */ + if (ocfs2_size_fits_inline_data(di_bh, end)) + goto out; + + ret = ocfs2_convert_inline_data_to_extents(inode, di_bh); + if (ret) { + mlog_errno(ret); + goto out; + } + } /* * We consider both start and len to be inclusive. @@ -1276,6 +1344,8 @@ next: ret = 0; out: + + brelse(di_bh); return ret; } @@ -1457,6 +1527,14 @@ static int ocfs2_remove_inode_range(struct inode *inode, if (byte_len == 0) return 0; + if (OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL) { + ret = ocfs2_truncate_inline(inode, di_bh, byte_start, + byte_start + byte_len, 1); + if (ret) + mlog_errno(ret); + return ret; + } + trunc_start = ocfs2_clusters_for_bytes(osb->sb, byte_start); trunc_len = (byte_start + byte_len) >> osb->s_clustersize_bits; if (trunc_len >= trunc_start) @@ -1759,6 +1837,15 @@ static int ocfs2_prepare_inode_for_write(struct dentry *dentry, break; /* + * There's no sane way to do direct writes to an inode + * with inline data. + */ + if (OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL) { + *direct_io = 0; + break; + } + + /* * Allowing concurrent direct writes means * i_size changes wouldn't be synchronized, so * one node could wind up truncating another diff --git a/fs/ocfs2/inode.c b/fs/ocfs2/inode.c index c8923bab422..1d5e0cb0fda 100644 --- a/fs/ocfs2/inode.c +++ b/fs/ocfs2/inode.c @@ -514,6 +514,10 @@ static int ocfs2_truncate_for_delete(struct ocfs2_super *osb, fe = (struct ocfs2_dinode *) fe_bh->b_data; + /* + * This check will also skip truncate of inodes with inline + * data and fast symlinks. + */ if (fe->i_clusters) { handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS); if (IS_ERR(handle)) { diff --git a/fs/ocfs2/journal.h b/fs/ocfs2/journal.h index ce60aab013a..4b32e096156 100644 --- a/fs/ocfs2/journal.h +++ b/fs/ocfs2/journal.h @@ -282,6 +282,9 @@ int ocfs2_journal_dirty_data(handle_t *handle, * prev. group desc. if we relink. */ #define OCFS2_SUBALLOC_ALLOC (3) +#define OCFS2_INLINE_TO_EXTENTS_CREDITS (OCFS2_SUBALLOC_ALLOC \ + + OCFS2_INODE_UPDATE_CREDITS) + /* dinode + group descriptor update. We don't relink on free yet. */ #define OCFS2_SUBALLOC_FREE (2) |