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Diffstat (limited to 'fs/ext4/ext4.h')
-rw-r--r--fs/ext4/ext4.h91
1 files changed, 43 insertions, 48 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 990c9400092..d0f15ef56de 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -33,14 +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
@@ -54,8 +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 */
@@ -180,8 +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 */
@@ -249,6 +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
*/
@@ -256,6 +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 {
@@ -303,7 +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
@@ -531,7 +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 */
@@ -666,7 +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__
@@ -814,6 +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
@@ -865,24 +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
@@ -970,22 +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
*/
@@ -1092,6 +1083,7 @@ 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);
@@ -1107,7 +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,
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-16 03:16:10 +0000