ext4: fix incorect journal credits reservation in ext4_zero_range

[firefly-linux-kernel-4.4.55.git] / fs / ext4 / ext4.h

diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 7cc5a0e23688e1a2ce071dcb646b725a266ff890..b0c225cdb52cd20ba5927149c338d9749e951f57 100644 (file)
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -591,7 +591,6 @@ enum {
 #define EXT4_FREE_BLOCKS_NO_QUOT_UPDATE        0x0008
 #define EXT4_FREE_BLOCKS_NOFREE_FIRST_CLUSTER  0x0010
 #define EXT4_FREE_BLOCKS_NOFREE_LAST_CLUSTER   0x0020
-#define EXT4_FREE_BLOCKS_RESERVE               0x0040
 
 /*
  * ioctl commands
@@ -1826,7 +1825,7 @@ ext4_group_first_block_no(struct super_block *sb, ext4_group_t group_no)
 /*
  * Special error return code only used by dx_probe() and its callers.
  */
-#define ERR_BAD_DX_DIR -75000
+#define ERR_BAD_DX_DIR (-(MAX_ERRNO - 1))
 
 /*
  * Timeout and state flag for lazy initialization inode thread.
@@ -2029,6 +2028,8 @@ static inline  unsigned char get_dtype(struct super_block *sb, int filetype)
 
        return ext4_filetype_table[filetype];
 }
+extern int ext4_check_all_de(struct inode *dir, struct buffer_head *bh,
+                            void *buf, int buf_size);
 
 /* fsync.c */
 extern int ext4_sync_file(struct file *, loff_t, loff_t, int);
@@ -2144,8 +2145,8 @@ extern ssize_t ext4_ind_direct_IO(int rw, struct kiocb *iocb,
 extern int ext4_ind_calc_metadata_amount(struct inode *inode, sector_t lblock);
 extern int ext4_ind_trans_blocks(struct inode *inode, int nrblocks);
 extern void ext4_ind_truncate(handle_t *, struct inode *inode);
-extern int ext4_free_hole_blocks(handle_t *handle, struct inode *inode,
-                                ext4_lblk_t first, ext4_lblk_t stop);
+extern int ext4_ind_remove_space(handle_t *handle, struct inode *inode,
+                                ext4_lblk_t start, ext4_lblk_t end);
 
 /* ioctl.c */
 extern long ext4_ioctl(struct file *, unsigned int, unsigned long);
@@ -2453,6 +2454,22 @@ static inline void ext4_update_i_disksize(struct inode *inode, loff_t newsize)
        up_write(&EXT4_I(inode)->i_data_sem);
 }
 
+/* Update i_size, i_disksize. Requires i_mutex to avoid races with truncate */
+static inline int ext4_update_inode_size(struct inode *inode, loff_t newsize)
+{
+       int changed = 0;
+
+       if (newsize > inode->i_size) {
+               i_size_write(inode, newsize);
+               changed = 1;
+       }
+       if (newsize > EXT4_I(inode)->i_disksize) {
+               ext4_update_i_disksize(inode, newsize);
+               changed |= 2;
+       }
+       return changed;
+}
+
 struct ext4_group_info {
        unsigned long   bb_state;
        struct rb_root  bb_free_root;
@@ -2560,7 +2577,6 @@ extern const struct file_operations ext4_file_operations;
 extern loff_t ext4_llseek(struct file *file, loff_t offset, int origin);
 
 /* inline.c */
-extern int ext4_has_inline_data(struct inode *inode);
 extern int ext4_get_max_inline_size(struct inode *inode);
 extern int ext4_find_inline_data_nolock(struct inode *inode);
 extern int ext4_init_inline_data(handle_t *handle, struct inode *inode,
@@ -2626,6 +2642,12 @@ extern void ext4_inline_data_truncate(struct inode *inode, int *has_inline);
 
 extern int ext4_convert_inline_data(struct inode *inode);
 
+static inline int ext4_has_inline_data(struct inode *inode)
+{
+       return ext4_test_inode_flag(inode, EXT4_INODE_INLINE_DATA) &&
+              EXT4_I(inode)->i_inline_off;
+}
+
 /* namei.c */
 extern const struct inode_operations ext4_dir_inode_operations;
 extern const struct inode_operations ext4_special_inode_operations;