1 files changed, 46 insertions, 49 deletions

diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index b0c87dce66a3..d0f15ef56de1 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -20,6 +20,7 @@
 #include <linux/blkdev.h>
 #include <linux/magic.h>
 #include <linux/jbd2.h>
+#include <linux/quota.h>
 #include "ext4_i.h"
 
 /*
@@ -32,14 +33,6 @@
 #undef EXT4FS_DEBUG
 
 /*
- * Define EXT4_RESERVATION to reserve data blocks for expanding files
- */
-#define EXT4_DEFAULT_RESERVE_BLOCKS     8
-/*max window size: 1024(direct blocks) + 3([t,d]indirect blocks) */
-#define EXT4_MAX_RESERVE_BLOCKS         1027
-#define EXT4_RESERVE_WINDOW_NOT_ALLOCATED 0
-
-/*
  * Debug code
  */
 #ifdef EXT4FS_DEBUG
@@ -53,8 +46,6 @@
 #define ext4_debug(f, a...)     do {} while (0)
 #endif
 
-#define EXT4_MULTIBLOCK_ALLOCATOR       1
-
 /* prefer goal again. length */
 #define EXT4_MB_HINT_MERGE              1
 /* blocks already reserved */
@@ -179,8 +170,9 @@ struct ext4_group_desc
  */
 
 struct flex_groups {
-        __u32 free_inodes;
-        __u32 free_blocks;
+        atomic_t free_inodes;
+        atomic_t free_blocks;
+        atomic_t used_dirs;
 };
 
 #define EXT4_BG_INODE_UNINIT    0x0001 /* Inode table/bitmap not in use */
@@ -248,6 +240,30 @@ struct flex_groups {
 #define EXT4_FL_USER_VISIBLE            0x000BDFFF /* User visible flags */
 #define EXT4_FL_USER_MODIFIABLE         0x000B80FF /* User modifiable flags */
 
+/* Flags that should be inherited by new inodes from their parent. */
+#define EXT4_FL_INHERITED (EXT4_SECRM_FL | EXT4_UNRM_FL | EXT4_COMPR_FL |\
+                           EXT4_SYNC_FL | EXT4_IMMUTABLE_FL | EXT4_APPEND_FL |\
+                           EXT4_NODUMP_FL | EXT4_NOATIME_FL |\
+                           EXT4_NOCOMPR_FL | EXT4_JOURNAL_DATA_FL |\
+                           EXT4_NOTAIL_FL | EXT4_DIRSYNC_FL)
+
+/* Flags that are appropriate for regular files (all but dir-specific ones). */
+#define EXT4_REG_FLMASK (~(EXT4_DIRSYNC_FL | EXT4_TOPDIR_FL))
+
+/* Flags that are appropriate for non-directories/regular files. */
+#define EXT4_OTHER_FLMASK (EXT4_NODUMP_FL | EXT4_NOATIME_FL)
+
+/* Mask out flags that are inappropriate for the given type of inode. */
+static inline __u32 ext4_mask_flags(umode_t mode, __u32 flags)
+{
+        if (S_ISDIR(mode))
+                return flags;
+        else if (S_ISREG(mode))
+                return flags & EXT4_REG_FLMASK;
+        else
+                return flags & EXT4_OTHER_FLMASK;
+}
+
 /*
  * Inode dynamic state flags
  */
@@ -255,6 +271,7 @@ struct flex_groups {
 #define EXT4_STATE_NEW                  0x00000002 /* inode is newly created */
 #define EXT4_STATE_XATTR                0x00000004 /* has in-inode xattrs */
 #define EXT4_STATE_NO_EXPAND            0x00000008 /* No space for expansion */
+#define EXT4_STATE_DA_ALLOC_CLOSE       0x00000010 /* Alloc DA blks on close */
 
 /* Used to pass group descriptor data when online resize is done */
 struct ext4_new_group_input {
@@ -302,7 +319,9 @@ struct ext4_new_group_data {
 #define EXT4_IOC_GROUP_EXTEND           _IOW('f', 7, unsigned long)
 #define EXT4_IOC_GROUP_ADD              _IOW('f', 8, struct ext4_new_group_input)
 #define EXT4_IOC_MIGRATE                _IO('f', 9)
+ /* note ioctl 10 reserved for an early version of the FIEMAP ioctl */
  /* note ioctl 11 reserved for filesystem-independent FIEMAP ioctl */
+#define EXT4_IOC_ALLOC_DA_BLKS          _IO('f', 12)
 
 /*
  * ioctl commands in 32 bit emulation
@@ -530,7 +549,7 @@ do {									       \
 #define EXT4_MOUNT_NO_UID32             0x02000  /* Disable 32-bit UIDs */
 #define EXT4_MOUNT_XATTR_USER           0x04000 /* Extended user attributes */
 #define EXT4_MOUNT_POSIX_ACL            0x08000 /* POSIX Access Control Lists */
-#define EXT4_MOUNT_RESERVATION          0x10000 /* Preallocation */
+#define EXT4_MOUNT_NO_AUTO_DA_ALLOC     0x10000 /* No auto delalloc mapping */
 #define EXT4_MOUNT_BARRIER              0x20000 /* Use block barriers */
 #define EXT4_MOUNT_NOBH                 0x40000 /* No bufferheads */
 #define EXT4_MOUNT_QUOTA                0x80000 /* Some quota option set */
@@ -665,7 +684,8 @@ struct ext4_super_block {
         __u8    s_log_groups_per_flex;  /* FLEX_BG group size */
         __u8    s_reserved_char_pad2;
         __le16  s_reserved_pad;
-        __u32   s_reserved[162];        /* Padding to the end of the block */
+        __le64  s_kbytes_written;       /* nr of lifetime kilobytes written */
+        __u32   s_reserved[160];        /* Padding to the end of the block */
 };
 
 #ifdef __KERNEL__
@@ -813,6 +833,12 @@ static inline int ext4_valid_inum(struct super_block *sb, unsigned long ino)
 #define EXT4_DEF_MAX_BATCH_TIME 15000 /* 15ms */
 
 /*
+ * Minimum number of groups in a flexgroup before we separate out
+ * directories into the first block group of a flexgroup
+ */
+#define EXT4_FLEX_SIZE_DIR_ALLOC_SCHEME 4
+
+/*
  * Structure of a directory entry
  */
 #define EXT4_NAME_LEN 255
@@ -864,24 +890,6 @@ struct ext4_dir_entry_2 {
                                          ~EXT4_DIR_ROUND)
 #define EXT4_MAX_REC_LEN                ((1<<16)-1)
 
-static inline unsigned ext4_rec_len_from_disk(__le16 dlen)
-{
-        unsigned len = le16_to_cpu(dlen);
-
-        if (len == EXT4_MAX_REC_LEN || len == 0)
-                return 1 << 16;
-        return len;
-}
-
-static inline __le16 ext4_rec_len_to_disk(unsigned len)
-{
-        if (len == (1 << 16))
-                return cpu_to_le16(EXT4_MAX_REC_LEN);
-        else if (len > (1 << 16))
-                BUG();
-        return cpu_to_le16(len);
-}
-
 /*
  * Hash Tree Directory indexing
  * (c) Daniel Phillips, 2001
@@ -969,22 +977,6 @@ void ext4_get_group_no_and_offset(struct super_block *sb, ext4_fsblk_t blocknr,
 
 extern struct proc_dir_entry *ext4_proc_root;
 
-#ifdef CONFIG_PROC_FS
-extern const struct file_operations ext4_ui_proc_fops;
-
-#define EXT4_PROC_HANDLER(name, var)                                    \
-do {                                                                    \
-        proc = proc_create_data(name, mode, sbi->s_proc,                \
-                                &ext4_ui_proc_fops, &sbi->s_##var);     \
-        if (proc == NULL) {                                             \
-                printk(KERN_ERR "EXT4-fs: can't create %s\n", name);    \
-                goto err_out;                                           \
-        }                                                               \
-} while (0)
-#else
-#define EXT4_PROC_HANDLER(name, var)
-#endif
-
 /*
  * Function prototypes
  */
@@ -1091,13 +1083,15 @@ extern int ext4_can_truncate(struct inode *inode);
 extern void ext4_truncate(struct inode *);
 extern void ext4_set_inode_flags(struct inode *);
 extern void ext4_get_inode_flags(struct ext4_inode_info *);
+extern int ext4_alloc_da_blocks(struct inode *inode);
 extern void ext4_set_aops(struct inode *inode);
 extern int ext4_writepage_trans_blocks(struct inode *);
 extern int ext4_meta_trans_blocks(struct inode *, int nrblocks, int idxblocks);
 extern int ext4_chunk_trans_blocks(struct inode *, int nrblocks);
 extern int ext4_block_truncate_page(handle_t *handle,
                 struct address_space *mapping, loff_t from);
-extern int ext4_page_mkwrite(struct vm_area_struct *vma, struct page *page);
+extern int ext4_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf);
+extern qsize_t ext4_get_reserved_space(struct inode *inode);
 
 /* ioctl.c */
 extern long ext4_ioctl(struct file *, unsigned int, unsigned long);
@@ -1105,7 +1099,10 @@ extern long ext4_compat_ioctl(struct file *, unsigned int, unsigned long);
 
 /* migrate.c */
 extern int ext4_ext_migrate(struct inode *);
+
 /* namei.c */
+extern unsigned int ext4_rec_len_from_disk(__le16 dlen, unsigned blocksize);
+extern __le16 ext4_rec_len_to_disk(unsigned len, unsigned blocksize);
 extern int ext4_orphan_add(handle_t *, struct inode *);
 extern int ext4_orphan_del(handle_t *, struct inode *);
 extern int ext4_htree_fill_tree(struct file *dir_file, __u32 start_hash,