1 Index: linux-stage/fs/ext4/ext4.h
2 ===================================================================
3 --- linux-stage.orig/fs/ext4/ext4.h
4 +++ linux-stage/fs/ext4/ext4.h
5 @@ -1256,6 +1256,9 @@ EXT4_INODE_BIT_FNS(state, state_flags)
7 #define NEXT_ORPHAN(inode) EXT4_I(inode)->i_dtime
9 +/* Has been moved to linux/magic.h but we need it for Lustre */
10 +#define EXT4_SUPER_MAGIC 0xEF53
13 * Codes for operating systems
15 @@ -1757,6 +1760,9 @@ extern void ext4_add_groupblocks(handle_
16 ext4_fsblk_t block, unsigned long count);
17 extern int ext4_trim_fs(struct super_block *, struct fstrim_range *);
19 +extern void ext4_mb_discard_inode_preallocations(struct inode *);
23 int ext4_forget(handle_t *handle, int is_metadata, struct inode *inode,
24 struct buffer_head *bh, ext4_fsblk_t blocknr);
25 Index: linux-stage/fs/ext4/ext4_extents.h
26 ===================================================================
27 --- linux-stage.orig/fs/ext4/ext4_extents.h
28 +++ linux-stage/fs/ext4/ext4_extents.h
34 + * define EXT4_ALLOC_NEEDED to 0 since block bitmap, group desc. and sb
35 + * are now accounted in ext4_ext_calc_credits_for_insert()
37 +#define EXT4_ALLOC_NEEDED 0
38 +#define HAVE_EXT_PREPARE_CB_EXTENT
41 * ext4_inode has i_block array (60 bytes total).
42 @@ -291,6 +297,8 @@ extern int ext4_extent_tree_init(handle_
43 extern int ext4_ext_calc_credits_for_single_extent(struct inode *inode,
45 struct ext4_ext_path *path);
46 +extern int ext4_ext_calc_credits_for_insert(struct inode *,
47 + struct ext4_ext_path *);
48 extern int ext4_can_extents_be_merged(struct inode *inode,
49 struct ext4_extent *ex1,
50 struct ext4_extent *ex2);
51 Index: linux-stage/fs/ext4/ext4_jbd2.c
52 ===================================================================
53 --- linux-stage.orig/fs/ext4/ext4_jbd2.c
54 +++ linux-stage/fs/ext4/ext4_jbd2.c
55 @@ -31,6 +31,7 @@ int __ext4_journal_get_write_access(cons
59 +EXPORT_SYMBOL(__ext4_journal_get_write_access);
61 int __ext4_journal_forget(const char *where, handle_t *handle,
62 struct buffer_head *bh)
63 @@ -107,3 +108,4 @@ int __ext4_handle_dirty_metadata(const c
67 +EXPORT_SYMBOL(__ext4_handle_dirty_metadata);
68 Index: linux-stage/fs/ext4/ext4_jbd2.h
69 ===================================================================
70 --- linux-stage.orig/fs/ext4/ext4_jbd2.h
71 +++ linux-stage/fs/ext4/ext4_jbd2.h
73 (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_EXTENTS) \
76 +#define ext4_journal_dirty_metadata(handle, bh) \
77 + ext4_handle_dirty_metadata(handle, NULL, bh)
78 /* Extended attribute operations touch at most two data buffers,
79 * two bitmap buffers, and two group summaries, in addition to the inode
80 * and the superblock, which are already accounted for. */
81 Index: linux-stage/fs/ext4/extents.c
82 ===================================================================
83 --- linux-stage.orig/fs/ext4/extents.c
84 +++ linux-stage/fs/ext4/extents.c
85 @@ -2200,6 +2200,55 @@ int ext4_ext_calc_credits_for_single_ext
89 + * This routine returns max. credits extent tree can consume.
90 + * It should be OK for low-performance paths like ->writepage()
91 + * To allow many writing process to fit a single transaction,
92 + * caller should calculate credits under truncate_mutex and
95 +int ext4_ext_calc_credits_for_insert(struct inode *inode,
96 + struct ext4_ext_path *path)
101 + /* probably there is space in leaf? */
102 + depth = path->p_depth;
103 + if (le16_to_cpu(path[depth].p_hdr->eh_entries)
104 + < le16_to_cpu(path[depth].p_hdr->eh_max))
109 + * given 32bit logical block (4294967296 blocks), max. tree
110 + * can be 4 levels in depth -- 4 * 340^4 == 53453440000.
111 + * let's also add one more level for imbalance.
115 + /* allocation of new data block(s) */
119 + * tree can be full, so it'd need to grow in depth:
120 + * we need one credit to modify old root, credits for
121 + * new root will be added in split accounting
125 + * Index split can happen, we'd need:
126 + * allocate intermediate indexes (bitmap + group)
127 + * + change two blocks at each level, but root (already included)
129 + needed += (depth * 2) + (depth * 2);
131 + /* any allocation modifies superblock */
138 * How many index/leaf blocks need to change/allocate to modify nrblocks?
140 * if nrblocks are fit in a single extent (chunk flag is 1), then
141 @@ -4488,3 +4537,12 @@ int ext4_fiemap(struct inode *inode, str
145 +EXPORT_SYMBOL(ext4_ext_search_right);
146 +EXPORT_SYMBOL(ext4_ext_search_left);
147 +EXPORT_SYMBOL(ext4_ext_insert_extent);
148 +EXPORT_SYMBOL(ext4_mb_new_blocks);
149 +EXPORT_SYMBOL(ext4_ext_calc_credits_for_insert);
150 +EXPORT_SYMBOL(ext4_mark_inode_dirty);
151 +EXPORT_SYMBOL(ext4_ext_walk_space);
152 +EXPORT_SYMBOL(ext4_ext_find_extent);
153 +EXPORT_SYMBOL(ext4_ext_drop_refs);
154 Index: linux-stage/fs/ext4/inode.c
155 ===================================================================
156 --- linux-stage.orig/fs/ext4/inode.c
157 +++ linux-stage/fs/ext4/inode.c
158 @@ -5549,6 +5549,7 @@ bad_inode:
162 +EXPORT_SYMBOL(ext4_iget);
164 static int ext4_inode_blocks_set(handle_t *handle,
165 struct ext4_inode *raw_inode,
166 Index: linux-stage/fs/ext4/mballoc.c
167 ===================================================================
168 --- linux-stage.orig/fs/ext4/mballoc.c
169 +++ linux-stage/fs/ext4/mballoc.c
170 @@ -4031,6 +4031,7 @@ repeat:
172 kmem_cache_free(ext4_ac_cachep, ac);
174 +EXPORT_SYMBOL(ext4_discard_preallocations);
177 * finds all preallocated spaces and return blocks being freed to them
178 @@ -5189,3 +5190,6 @@ out:
179 range->len = trimmed * sb->s_blocksize;
183 +EXPORT_SYMBOL(ext4_free_blocks);
185 Index: linux-stage/fs/ext4/super.c
186 ===================================================================
187 --- linux-stage.orig/fs/ext4/super.c
188 +++ linux-stage/fs/ext4/super.c
189 @@ -137,6 +137,7 @@ __u32 ext4_itable_unused_count(struct su
190 (EXT4_DESC_SIZE(sb) >= EXT4_MIN_DESC_SIZE_64BIT ?
191 (__u32)le16_to_cpu(bg->bg_itable_unused_hi) << 16 : 0);
193 +EXPORT_SYMBOL(ext4_itable_unused_count);
195 void ext4_block_bitmap_set(struct super_block *sb,
196 struct ext4_group_desc *bg, ext4_fsblk_t blk)
197 @@ -1176,11 +1177,14 @@ enum {
198 Opt_usrjquota, Opt_grpjquota, Opt_offusrjquota, Opt_offgrpjquota,
199 Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_jqfmt_vfsv1, Opt_quota,
200 Opt_noquota, Opt_ignore, Opt_barrier, Opt_nobarrier, Opt_err,
201 + Opt_iopen, Opt_noiopen, Opt_iopen_nopriv,
202 Opt_resize, Opt_usrquota, Opt_grpquota, Opt_i_version,
203 Opt_stripe, Opt_delalloc, Opt_nodelalloc,
204 Opt_block_validity, Opt_noblock_validity,
205 Opt_inode_readahead_blks, Opt_journal_ioprio,
206 - Opt_discard, Opt_nodiscard, Opt_init_itable, Opt_noinit_itable,
208 + Opt_discard, Opt_nodiscard,
209 + Opt_init_itable, Opt_noinit_itable,
212 static const match_table_t tokens = {
213 @@ -1232,6 +1236,9 @@ static const match_table_t tokens = {
214 {Opt_noquota, "noquota"},
215 {Opt_quota, "quota"},
216 {Opt_usrquota, "usrquota"},
217 + {Opt_iopen, "iopen"},
218 + {Opt_noiopen, "noiopen"},
219 + {Opt_iopen_nopriv, "iopen_nopriv"},
220 {Opt_barrier, "barrier=%u"},
221 {Opt_barrier, "barrier"},
222 {Opt_nobarrier, "nobarrier"},
223 @@ -1247,6 +1254,7 @@ static const match_table_t tokens = {
224 {Opt_auto_da_alloc, "auto_da_alloc=%u"},
225 {Opt_auto_da_alloc, "auto_da_alloc"},
226 {Opt_noauto_da_alloc, "noauto_da_alloc"},
227 + {Opt_mballoc, "mballoc"},
228 {Opt_discard, "discard"},
229 {Opt_nodiscard, "nodiscard"},
230 {Opt_init_itable, "init_itable=%u"},
231 @@ -1607,6 +1615,10 @@ set_qf_format:
233 clear_opt(sbi->s_mount_opt, BARRIER);
237 + case Opt_iopen_nopriv:
242 @@ -1704,6 +1716,8 @@ set_qf_format:
243 case Opt_noinit_itable:
244 clear_opt(sbi->s_mount_opt, INIT_INODE_TABLE);
249 ext4_msg(sb, KERN_ERR,
250 "Unrecognized mount option \"%s\" "