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-rw-r--r--include/linux/ext4_fs.h8
-rw-r--r--include/linux/ext4_fs_extents.h15
2 files changed, 23 insertions, 0 deletions
diff --git a/include/linux/ext4_fs.h b/include/linux/ext4_fs.h
index de1f9f78625a..87c2d7a05b01 100644
--- a/include/linux/ext4_fs.h
+++ b/include/linux/ext4_fs.h
@@ -102,6 +102,7 @@
102 EXT4_GOOD_OLD_FIRST_INO : \ 102 EXT4_GOOD_OLD_FIRST_INO : \
103 (s)->s_first_ino) 103 (s)->s_first_ino)
104#endif 104#endif
105#define EXT4_BLOCK_ALIGN(size, blkbits) ALIGN((size), (1 << (blkbits)))
105 106
106/* 107/*
107 * Macro-instructions used to manage fragments 108 * Macro-instructions used to manage fragments
@@ -225,6 +226,11 @@ struct ext4_new_group_data {
225 __u32 free_blocks_count; 226 __u32 free_blocks_count;
226}; 227};
227 228
229/*
230 * Following is used by preallocation code to tell get_blocks() that we
231 * want uninitialzed extents.
232 */
233#define EXT4_CREATE_UNINITIALIZED_EXT 2
228 234
229/* 235/*
230 * ioctl commands 236 * ioctl commands
@@ -983,6 +989,8 @@ extern int ext4_ext_get_blocks(handle_t *handle, struct inode *inode,
983extern void ext4_ext_truncate(struct inode *, struct page *); 989extern void ext4_ext_truncate(struct inode *, struct page *);
984extern void ext4_ext_init(struct super_block *); 990extern void ext4_ext_init(struct super_block *);
985extern void ext4_ext_release(struct super_block *); 991extern void ext4_ext_release(struct super_block *);
992extern long ext4_fallocate(struct inode *inode, int mode, loff_t offset,
993 loff_t len);
986static inline int 994static inline int
987ext4_get_blocks_wrap(handle_t *handle, struct inode *inode, sector_t block, 995ext4_get_blocks_wrap(handle_t *handle, struct inode *inode, sector_t block,
988 unsigned long max_blocks, struct buffer_head *bh, 996 unsigned long max_blocks, struct buffer_head *bh,
diff --git a/include/linux/ext4_fs_extents.h b/include/linux/ext4_fs_extents.h
index acfe59740b03..e3d5afc6f23e 100644
--- a/include/linux/ext4_fs_extents.h
+++ b/include/linux/ext4_fs_extents.h
@@ -188,6 +188,21 @@ ext4_ext_invalidate_cache(struct inode *inode)
188 EXT4_I(inode)->i_cached_extent.ec_type = EXT4_EXT_CACHE_NO; 188 EXT4_I(inode)->i_cached_extent.ec_type = EXT4_EXT_CACHE_NO;
189} 189}
190 190
191static inline void ext4_ext_mark_uninitialized(struct ext4_extent *ext)
192{
193 ext->ee_len |= cpu_to_le16(0x8000);
194}
195
196static inline int ext4_ext_is_uninitialized(struct ext4_extent *ext)
197{
198 return (int)(le16_to_cpu((ext)->ee_len) & 0x8000);
199}
200
201static inline int ext4_ext_get_actual_len(struct ext4_extent *ext)
202{
203 return (int)(le16_to_cpu((ext)->ee_len) & 0x7FFF);
204}
205
191extern int ext4_extent_tree_init(handle_t *, struct inode *); 206extern int ext4_extent_tree_init(handle_t *, struct inode *);
192extern int ext4_ext_calc_credits_for_insert(struct inode *, struct ext4_ext_path *); 207extern int ext4_ext_calc_credits_for_insert(struct inode *, struct ext4_ext_path *);
193extern unsigned int ext4_ext_check_overlap(struct inode *, struct ext4_extent *, struct ext4_ext_path *); 208extern unsigned int ext4_ext_check_overlap(struct inode *, struct ext4_extent *, struct ext4_ext_path *);