There is no longer a reason for a separate ext4_i.h header file, so
move it into ext4.h just to make life easier for developers to find
the relevant data structures and typedefs. Should also speed up
compiles slightly, too.
Signed-off-by: "Theodore Ts'o" <[email protected]>
---
fs/ext4/ext4.h | 122 ++++++++++++++++++++++++++++++++++++++++++++++-
fs/ext4/ext4_i.h | 140 ------------------------------------------------------
2 files changed, 121 insertions(+), 141 deletions(-)
delete mode 100644 fs/ext4/ext4_i.h
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 02ec44b..ba57d66 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -21,7 +21,10 @@
#include <linux/magic.h>
#include <linux/jbd2.h>
#include <linux/quota.h>
-#include "ext4_i.h"
+#include <linux/rwsem.h>
+#include <linux/rbtree.h>
+#include <linux/seqlock.h>
+#include <linux/mutex.h>
/*
* The fourth extended filesystem constants/structures
@@ -46,6 +49,19 @@
#define ext4_debug(f, a...) do {} while (0)
#endif
+/* data type for block offset of block group */
+typedef int ext4_grpblk_t;
+
+/* data type for filesystem-wide blocks number */
+typedef unsigned long long ext4_fsblk_t;
+
+/* data type for file logical block number */
+typedef __u32 ext4_lblk_t;
+
+/* data type for block group number */
+typedef unsigned int ext4_group_t;
+
+
/* prefer goal again. length */
#define EXT4_MB_HINT_MERGE 1
/* blocks already reserved */
@@ -516,6 +532,110 @@ do { \
#endif /* defined(__KERNEL__) || defined(__linux__) */
/*
+ * storage for cached extent
+ */
+struct ext4_ext_cache {
+ ext4_fsblk_t ec_start;
+ ext4_lblk_t ec_block;
+ __u32 ec_len; /* must be 32bit to return holes */
+ __u32 ec_type;
+};
+
+/*
+ * fourth extended file system inode data in memory
+ */
+struct ext4_inode_info {
+ __le32 i_data[15]; /* unconverted */
+ __u32 i_flags;
+ ext4_fsblk_t i_file_acl;
+ __u32 i_dtime;
+
+ /*
+ * i_block_group is the number of the block group which contains
+ * this file's inode. Constant across the lifetime of the inode,
+ * it is ued for making block allocation decisions - we try to
+ * place a file's data blocks near its inode block, and new inodes
+ * near to their parent directory's inode.
+ */
+ ext4_group_t i_block_group;
+ __u32 i_state; /* Dynamic state flags for ext4 */
+
+ ext4_lblk_t i_dir_start_lookup;
+#ifdef CONFIG_EXT4_FS_XATTR
+ /*
+ * Extended attributes can be read independently of the main file
+ * data. Taking i_mutex even when reading would cause contention
+ * between readers of EAs and writers of regular file data, so
+ * instead we synchronize on xattr_sem when reading or changing
+ * EAs.
+ */
+ struct rw_semaphore xattr_sem;
+#endif
+#ifdef CONFIG_EXT4_FS_POSIX_ACL
+ struct posix_acl *i_acl;
+ struct posix_acl *i_default_acl;
+#endif
+
+ struct list_head i_orphan; /* unlinked but open inodes */
+
+ /*
+ * i_disksize keeps track of what the inode size is ON DISK, not
+ * in memory. During truncate, i_size is set to the new size by
+ * the VFS prior to calling ext4_truncate(), but the filesystem won't
+ * set i_disksize to 0 until the truncate is actually under way.
+ *
+ * The intent is that i_disksize always represents the blocks which
+ * are used by this file. This allows recovery to restart truncate
+ * on orphans if we crash during truncate. We actually write i_disksize
+ * into the on-disk inode when writing inodes out, instead of i_size.
+ *
+ * The only time when i_disksize and i_size may be different is when
+ * a truncate is in progress. The only things which change i_disksize
+ * are ext4_get_block (growth) and ext4_truncate (shrinkth).
+ */
+ loff_t i_disksize;
+
+ /*
+ * i_data_sem is for serialising ext4_truncate() against
+ * ext4_getblock(). In the 2.4 ext2 design, great chunks of inode's
+ * data tree are chopped off during truncate. We can't do that in
+ * ext4 because whenever we perform intermediate commits during
+ * truncate, the inode and all the metadata blocks *must* be in a
+ * consistent state which allows truncation of the orphans to restart
+ * during recovery. Hence we must fix the get_block-vs-truncate race
+ * by other means, so we have i_data_sem.
+ */
+ struct rw_semaphore i_data_sem;
+ struct inode vfs_inode;
+ struct jbd2_inode jinode;
+
+ struct ext4_ext_cache i_cached_extent;
+ /*
+ * File creation time. Its function is same as that of
+ * struct timespec i_{a,c,m}time in the generic inode.
+ */
+ struct timespec i_crtime;
+
+ /* mballoc */
+ struct list_head i_prealloc_list;
+ spinlock_t i_prealloc_lock;
+
+ /* ialloc */
+ ext4_group_t i_last_alloc_group;
+
+ /* allocation reservation info for delalloc */
+ unsigned int i_reserved_data_blocks;
+ unsigned int i_reserved_meta_blocks;
+ unsigned int i_allocated_meta_blocks;
+ unsigned short i_delalloc_reserved_flag;
+
+ /* on-disk additional length */
+ __u16 i_extra_isize;
+
+ spinlock_t i_block_reservation_lock;
+};
+
+/*
* File system states
*/
#define EXT4_VALID_FS 0x0001 /* Unmounted cleanly */
diff --git a/fs/ext4/ext4_i.h b/fs/ext4/ext4_i.h
deleted file mode 100644
index 4ce2187..0000000
--- a/fs/ext4/ext4_i.h
+++ /dev/null
@@ -1,140 +0,0 @@
-/*
- * ext4_i.h
- *
- * Copyright (C) 1992, 1993, 1994, 1995
- * Remy Card ([email protected])
- * Laboratoire MASI - Institut Blaise Pascal
- * Universite Pierre et Marie Curie (Paris VI)
- *
- * from
- *
- * linux/include/linux/minix_fs_i.h
- *
- * Copyright (C) 1991, 1992 Linus Torvalds
- */
-
-#ifndef _EXT4_I
-#define _EXT4_I
-
-#include <linux/rwsem.h>
-#include <linux/rbtree.h>
-#include <linux/seqlock.h>
-#include <linux/mutex.h>
-
-/* data type for block offset of block group */
-typedef int ext4_grpblk_t;
-
-/* data type for filesystem-wide blocks number */
-typedef unsigned long long ext4_fsblk_t;
-
-/* data type for file logical block number */
-typedef __u32 ext4_lblk_t;
-
-/* data type for block group number */
-typedef unsigned int ext4_group_t;
-
-/*
- * storage for cached extent
- */
-struct ext4_ext_cache {
- ext4_fsblk_t ec_start;
- ext4_lblk_t ec_block;
- __u32 ec_len; /* must be 32bit to return holes */
- __u32 ec_type;
-};
-
-/*
- * fourth extended file system inode data in memory
- */
-struct ext4_inode_info {
- __le32 i_data[15]; /* unconverted */
- __u32 i_flags;
- ext4_fsblk_t i_file_acl;
- __u32 i_dtime;
-
- /*
- * i_block_group is the number of the block group which contains
- * this file's inode. Constant across the lifetime of the inode,
- * it is ued for making block allocation decisions - we try to
- * place a file's data blocks near its inode block, and new inodes
- * near to their parent directory's inode.
- */
- ext4_group_t i_block_group;
- __u32 i_state; /* Dynamic state flags for ext4 */
-
- ext4_lblk_t i_dir_start_lookup;
-#ifdef CONFIG_EXT4_FS_XATTR
- /*
- * Extended attributes can be read independently of the main file
- * data. Taking i_mutex even when reading would cause contention
- * between readers of EAs and writers of regular file data, so
- * instead we synchronize on xattr_sem when reading or changing
- * EAs.
- */
- struct rw_semaphore xattr_sem;
-#endif
-#ifdef CONFIG_EXT4_FS_POSIX_ACL
- struct posix_acl *i_acl;
- struct posix_acl *i_default_acl;
-#endif
-
- struct list_head i_orphan; /* unlinked but open inodes */
-
- /*
- * i_disksize keeps track of what the inode size is ON DISK, not
- * in memory. During truncate, i_size is set to the new size by
- * the VFS prior to calling ext4_truncate(), but the filesystem won't
- * set i_disksize to 0 until the truncate is actually under way.
- *
- * The intent is that i_disksize always represents the blocks which
- * are used by this file. This allows recovery to restart truncate
- * on orphans if we crash during truncate. We actually write i_disksize
- * into the on-disk inode when writing inodes out, instead of i_size.
- *
- * The only time when i_disksize and i_size may be different is when
- * a truncate is in progress. The only things which change i_disksize
- * are ext4_get_block (growth) and ext4_truncate (shrinkth).
- */
- loff_t i_disksize;
-
- /*
- * i_data_sem is for serialising ext4_truncate() against
- * ext4_getblock(). In the 2.4 ext2 design, great chunks of inode's
- * data tree are chopped off during truncate. We can't do that in
- * ext4 because whenever we perform intermediate commits during
- * truncate, the inode and all the metadata blocks *must* be in a
- * consistent state which allows truncation of the orphans to restart
- * during recovery. Hence we must fix the get_block-vs-truncate race
- * by other means, so we have i_data_sem.
- */
- struct rw_semaphore i_data_sem;
- struct inode vfs_inode;
- struct jbd2_inode jinode;
-
- struct ext4_ext_cache i_cached_extent;
- /*
- * File creation time. Its function is same as that of
- * struct timespec i_{a,c,m}time in the generic inode.
- */
- struct timespec i_crtime;
-
- /* mballoc */
- struct list_head i_prealloc_list;
- spinlock_t i_prealloc_lock;
-
- /* ialloc */
- ext4_group_t i_last_alloc_group;
-
- /* allocation reservation info for delalloc */
- unsigned int i_reserved_data_blocks;
- unsigned int i_reserved_meta_blocks;
- unsigned int i_allocated_meta_blocks;
- unsigned short i_delalloc_reserved_flag;
-
- /* on-disk additional length */
- __u16 i_extra_isize;
-
- spinlock_t i_block_reservation_lock;
-};
The fs/ext4/namei.h header file had only a single function
declaration, and should have never been a standalone file. Move it
into ext4.h, where should have been from the beginning.
Signed-off-by: "Theodore Ts'o" <[email protected]>
---
fs/ext4/ext4.h | 1 +
fs/ext4/namei.c | 1 -
fs/ext4/namei.h | 8 --------
fs/ext4/super.c | 1 -
4 files changed, 1 insertions(+), 10 deletions(-)
delete mode 100644 fs/ext4/namei.h
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 3b7223d..13238dc 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1595,6 +1595,7 @@ extern const struct file_operations ext4_file_operations;
/* namei.c */
extern const struct inode_operations ext4_dir_inode_operations;
extern const struct inode_operations ext4_special_inode_operations;
+extern struct dentry *ext4_get_parent(struct dentry *child);
/* symlink.c */
extern const struct inode_operations ext4_symlink_inode_operations;
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 8018e49..c9690b2 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -37,7 +37,6 @@
#include "ext4.h"
#include "ext4_jbd2.h"
-#include "namei.h"
#include "xattr.h"
#include "acl.h"
diff --git a/fs/ext4/namei.h b/fs/ext4/namei.h
deleted file mode 100644
index 5e4dfff..0000000
--- a/fs/ext4/namei.h
+++ /dev/null
@@ -1,8 +0,0 @@
-/* linux/fs/ext4/namei.h
- *
- * Copyright (C) 2005 Simtec Electronics
- * Ben Dooks <[email protected]>
- *
-*/
Move the function prototypes in group.h into ext4.h so they are all
defined in one place.
Signed-off-by: "Theodore Ts'o" <[email protected]>
---
fs/ext4/balloc.c | 1 -
fs/ext4/ext4.h | 17 +++++++++++++++++
fs/ext4/group.h | 29 -----------------------------
fs/ext4/ialloc.c | 1 -
fs/ext4/resize.c | 1 -
fs/ext4/super.c | 1 -
6 files changed, 17 insertions(+), 33 deletions(-)
delete mode 100644 fs/ext4/group.h
diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index a5ba039..92f557d 100644
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -19,7 +19,6 @@
#include <linux/buffer_head.h>
#include "ext4.h"
#include "ext4_jbd2.h"
-#include "group.h"
#include "mballoc.h"
/*
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 13238dc..05a6860 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1271,6 +1271,14 @@ extern struct ext4_group_desc * ext4_get_group_desc(struct super_block * sb,
ext4_group_t block_group,
struct buffer_head ** bh);
extern int ext4_should_retry_alloc(struct super_block *sb, int *retries);
+struct buffer_head *ext4_read_block_bitmap(struct super_block *sb,
+ ext4_group_t block_group);
+extern unsigned ext4_init_block_bitmap(struct super_block *sb,
+ struct buffer_head *bh,
+ ext4_group_t group,
+ struct ext4_group_desc *desc);
+#define ext4_free_blocks_after_init(sb, group, desc) \
+ ext4_init_block_bitmap(sb, NULL, group, desc)
/* dir.c */
extern int ext4_check_dir_entry(const char *, struct inode *,
@@ -1295,6 +1303,11 @@ extern struct inode * ext4_orphan_get(struct super_block *, unsigned long);
extern unsigned long ext4_count_free_inodes(struct super_block *);
extern unsigned long ext4_count_dirs(struct super_block *);
extern void ext4_check_inodes_bitmap(struct super_block *);
+extern unsigned ext4_init_inode_bitmap(struct super_block *sb,
+ struct buffer_head *bh,
+ ext4_group_t group,
+ struct ext4_group_desc *desc);
+extern void mark_bitmap_end(int start_bit, int end_bit, char *bitmap);
/* mballoc.c */
extern long ext4_mb_stats;
@@ -1418,6 +1431,10 @@ extern void ext4_used_dirs_set(struct super_block *sb,
struct ext4_group_desc *bg, __u32 count);
extern void ext4_itable_unused_set(struct super_block *sb,
struct ext4_group_desc *bg, __u32 count);
+extern __le16 ext4_group_desc_csum(struct ext4_sb_info *sbi, __u32 group,
+ struct ext4_group_desc *gdp);
+extern int ext4_group_desc_csum_verify(struct ext4_sb_info *sbi, __u32 group,
+ struct ext4_group_desc *gdp);
static inline ext4_fsblk_t ext4_blocks_count(struct ext4_super_block *es)
{
diff --git a/fs/ext4/group.h b/fs/ext4/group.h
deleted file mode 100644
index c2c0a8d..0000000
--- a/fs/ext4/group.h
+++ /dev/null
@@ -1,29 +0,0 @@
-/*
- * linux/fs/ext4/group.h
- *
- * Copyright (C) 2007 Cluster File Systems, Inc
- *
- * Author: Andreas Dilger <[email protected]>
- */
-
-#ifndef _LINUX_EXT4_GROUP_H
-#define _LINUX_EXT4_GROUP_H
-
-extern __le16 ext4_group_desc_csum(struct ext4_sb_info *sbi, __u32 group,
- struct ext4_group_desc *gdp);
-extern int ext4_group_desc_csum_verify(struct ext4_sb_info *sbi, __u32 group,
- struct ext4_group_desc *gdp);
-struct buffer_head *ext4_read_block_bitmap(struct super_block *sb,
- ext4_group_t block_group);
-extern unsigned ext4_init_block_bitmap(struct super_block *sb,
- struct buffer_head *bh,
- ext4_group_t group,
- struct ext4_group_desc *desc);
-#define ext4_free_blocks_after_init(sb, group, desc) \
- ext4_init_block_bitmap(sb, NULL, group, desc)
-extern unsigned ext4_init_inode_bitmap(struct super_block *sb,
- struct buffer_head *bh,
- ext4_group_t group,
- struct ext4_group_desc *desc);
-extern void mark_bitmap_end(int start_bit, int end_bit, char *bitmap);
-#endif /* _LINUX_EXT4_GROUP_H */
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index 55ba419..916d05c 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -27,7 +27,6 @@
#include "ext4_jbd2.h"
#include "xattr.h"
#include "acl.h"
-#include "group.h"
/*
* ialloc.c contains the inodes allocation and deallocation routines
diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
index e8ded13..27eb289 100644
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -15,7 +15,6 @@
#include <linux/slab.h>
#include "ext4_jbd2.h"
-#include "group.h"
#define outside(b, first, last) ((b) < (first) || (b) >= (last))
#define inside(b, first, last) ((b) >= (first) && (b) < (last))
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index d79e1c4..7903f20 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -46,7 +46,6 @@
#include "ext4_jbd2.h"
#include "xattr.h"
#include "acl.h"
-#include "group.h"
struct proc_dir_entry *ext4_proc_root;
static struct kset *ext4_kset;
--
1.6.0.4
There is no longer a reason for a separate ext4_sb.h header file, so
move it into ext4.h just to make life easier for developers to find
the relevant data structures and typedefs. Should also speed up
compiles slightly, too.
Signed-off-by: "Theodore Ts'o" <[email protected]>
---
fs/ext4/ext4.h | 145 +++++++++++++++++++++++++++++++++++++++++++++-
fs/ext4/ext4_sb.h | 163 -----------------------------------------------------
2 files changed, 141 insertions(+), 167 deletions(-)
delete mode 100644 fs/ext4/ext4_sb.h
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index ba57d66..3b7223d 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -25,6 +25,11 @@
#include <linux/rbtree.h>
#include <linux/seqlock.h>
#include <linux/mutex.h>
+#include <linux/timer.h>
+#include <linux/wait.h>
+#include <linux/rbtree.h>
+#include <linux/blockgroup_lock.h>
+#include <linux/percpu_counter.h>
/*
* The fourth extended filesystem constants/structures
@@ -195,9 +200,6 @@ struct flex_groups {
#define EXT4_BG_BLOCK_UNINIT 0x0002 /* Block bitmap not in use */
#define EXT4_BG_INODE_ZEROED 0x0004 /* On-disk itable initialized to zero */
-#ifdef __KERNEL__
-#include "ext4_sb.h"
-#endif
/*
* Macro-instructions used to manage group descriptors
*/
@@ -809,6 +811,136 @@ struct ext4_super_block {
};
#ifdef __KERNEL__
+/*
+ * fourth extended-fs super-block data in memory
+ */
+struct ext4_sb_info {
+ unsigned long s_desc_size; /* Size of a group descriptor in bytes */
+ unsigned long s_inodes_per_block;/* Number of inodes per block */
+ unsigned long s_blocks_per_group;/* Number of blocks in a group */
+ unsigned long s_inodes_per_group;/* Number of inodes in a group */
+ unsigned long s_itb_per_group; /* Number of inode table blocks per group */
+ unsigned long s_gdb_count; /* Number of group descriptor blocks */
+ unsigned long s_desc_per_block; /* Number of group descriptors per block */
+ ext4_group_t s_groups_count; /* Number of groups in the fs */
+ unsigned long s_overhead_last; /* Last calculated overhead */
+ unsigned long s_blocks_last; /* Last seen block count */
+ loff_t s_bitmap_maxbytes; /* max bytes for bitmap files */
+ struct buffer_head * s_sbh; /* Buffer containing the super block */
+ struct ext4_super_block *s_es; /* Pointer to the super block in the buffer */
+ struct buffer_head **s_group_desc;
+ unsigned long s_mount_opt;
+ ext4_fsblk_t s_sb_block;
+ uid_t s_resuid;
+ gid_t s_resgid;
+ unsigned short s_mount_state;
+ unsigned short s_pad;
+ int s_addr_per_block_bits;
+ int s_desc_per_block_bits;
+ int s_inode_size;
+ int s_first_ino;
+ unsigned int s_inode_readahead_blks;
+ spinlock_t s_next_gen_lock;
+ u32 s_next_generation;
+ u32 s_hash_seed[4];
+ int s_def_hash_version;
+ int s_hash_unsigned; /* 3 if hash should be signed, 0 if not */
+ struct percpu_counter s_freeblocks_counter;
+ struct percpu_counter s_freeinodes_counter;
+ struct percpu_counter s_dirs_counter;
+ struct percpu_counter s_dirtyblocks_counter;
+ struct blockgroup_lock *s_blockgroup_lock;
+ struct proc_dir_entry *s_proc;
+ struct kobject s_kobj;
+ struct completion s_kobj_unregister;
+
+ /* Journaling */
+ struct inode *s_journal_inode;
+ struct journal_s *s_journal;
+ struct list_head s_orphan;
+ struct mutex s_orphan_lock;
+ struct mutex s_resize_lock;
+ unsigned long s_commit_interval;
+ u32 s_max_batch_time;
+ u32 s_min_batch_time;
+ struct block_device *journal_bdev;
+#ifdef CONFIG_JBD2_DEBUG
+ struct timer_list turn_ro_timer; /* For turning read-only (crash simulation) */
+ wait_queue_head_t ro_wait_queue; /* For people waiting for the fs to go read-only */
+#endif
+#ifdef CONFIG_QUOTA
+ char *s_qf_names[MAXQUOTAS]; /* Names of quota files with journalled quota */
+ int s_jquota_fmt; /* Format of quota to use */
+#endif
+ unsigned int s_want_extra_isize; /* New inodes should reserve # bytes */
+
+#ifdef EXTENTS_STATS
+ /* ext4 extents stats */
+ unsigned long s_ext_min;
+ unsigned long s_ext_max;
+ unsigned long s_depth_max;
+ spinlock_t s_ext_stats_lock;
+ unsigned long s_ext_blocks;
+ unsigned long s_ext_extents;
+#endif
+
+ /* for buddy allocator */
+ struct ext4_group_info ***s_group_info;
+ struct inode *s_buddy_cache;
+ long s_blocks_reserved;
+ spinlock_t s_reserve_lock;
+ spinlock_t s_md_lock;
+ tid_t s_last_transaction;
+ unsigned short *s_mb_offsets;
+ unsigned int *s_mb_maxs;
+
+ /* tunables */
+ unsigned long s_stripe;
+ unsigned int s_mb_stream_request;
+ unsigned int s_mb_max_to_scan;
+ unsigned int s_mb_min_to_scan;
+ unsigned int s_mb_stats;
+ unsigned int s_mb_order2_reqs;
+ unsigned int s_mb_group_prealloc;
+ /* where last allocation was done - for stream allocation */
+ unsigned long s_mb_last_group;
+ unsigned long s_mb_last_start;
+
+ /* history to debug policy */
+ struct ext4_mb_history *s_mb_history;
+ int s_mb_history_cur;
+ int s_mb_history_max;
+ int s_mb_history_num;
+ spinlock_t s_mb_history_lock;
+ int s_mb_history_filter;
+
+ /* stats for buddy allocator */
+ spinlock_t s_mb_pa_lock;
+ atomic_t s_bal_reqs; /* number of reqs with len > 1 */
+ atomic_t s_bal_success; /* we found long enough chunks */
+ atomic_t s_bal_allocated; /* in blocks */
+ atomic_t s_bal_ex_scanned; /* total extents scanned */
+ atomic_t s_bal_goals; /* goal hits */
+ atomic_t s_bal_breaks; /* too long searches */
+ atomic_t s_bal_2orders; /* 2^order hits */
+ spinlock_t s_bal_lock;
+ unsigned long s_mb_buddies_generated;
+ unsigned long long s_mb_generation_time;
+ atomic_t s_mb_lost_chunks;
+ atomic_t s_mb_preallocated;
+ atomic_t s_mb_discarded;
+
+ /* locality groups */
+ struct ext4_locality_group *s_locality_groups;
+
+ /* for write statistics */
+ unsigned long s_sectors_written_start;
+ u64 s_kbytes_written;
+
+ unsigned int s_log_groups_per_flex;
+ struct flex_groups *s_flex_groups;
+};
+
static inline struct ext4_sb_info *EXT4_SB(struct super_block *sb)
{
return sb->s_fs_info;
@@ -824,7 +956,6 @@ static inline struct timespec ext4_current_time(struct inode *inode)
current_fs_time(inode->i_sb) : CURRENT_TIME_SEC;
}
-
static inline int ext4_valid_inum(struct super_block *sb, unsigned long ino)
{
return ino == EXT4_ROOT_INO ||
@@ -833,6 +964,12 @@ static inline int ext4_valid_inum(struct super_block *sb, unsigned long ino)
(ino >= EXT4_FIRST_INO(sb) &&
ino <= le32_to_cpu(EXT4_SB(sb)->s_es->s_inodes_count));
}
+
+static inline spinlock_t *
+sb_bgl_lock(struct ext4_sb_info *sbi, unsigned int block_group)
+{
+ return bgl_lock_ptr(sbi->s_blockgroup_lock, block_group);
+}
#else
/* Assume that user mode programs are passing in an ext4fs superblock, not
* a kernel struct super_block. This will allow us to call the feature-test
diff --git a/fs/ext4/ext4_sb.h b/fs/ext4/ext4_sb.h
deleted file mode 100644
index 2d36223..0000000
--- a/fs/ext4/ext4_sb.h
+++ /dev/null
@@ -1,163 +0,0 @@
-/*
- * ext4_sb.h
- *
- * Copyright (C) 1992, 1993, 1994, 1995
- * Remy Card ([email protected])
- * Laboratoire MASI - Institut Blaise Pascal
- * Universite Pierre et Marie Curie (Paris VI)
- *
- * from
- *
- * linux/include/linux/minix_fs_sb.h
- *
- * Copyright (C) 1991, 1992 Linus Torvalds
- */
-
-#ifndef _EXT4_SB
-#define _EXT4_SB
-
-#ifdef __KERNEL__
-#include <linux/timer.h>
-#include <linux/wait.h>
-#include <linux/blockgroup_lock.h>
-#include <linux/percpu_counter.h>
-#endif
-#include <linux/rbtree.h>
-
-/*
- * fourth extended-fs super-block data in memory
- */
-struct ext4_sb_info {
- unsigned long s_desc_size; /* Size of a group descriptor in bytes */
- unsigned long s_inodes_per_block;/* Number of inodes per block */
- unsigned long s_blocks_per_group;/* Number of blocks in a group */
- unsigned long s_inodes_per_group;/* Number of inodes in a group */
- unsigned long s_itb_per_group; /* Number of inode table blocks per group */
- unsigned long s_gdb_count; /* Number of group descriptor blocks */
- unsigned long s_desc_per_block; /* Number of group descriptors per block */
- ext4_group_t s_groups_count; /* Number of groups in the fs */
- unsigned long s_overhead_last; /* Last calculated overhead */
- unsigned long s_blocks_last; /* Last seen block count */
- loff_t s_bitmap_maxbytes; /* max bytes for bitmap files */
- struct buffer_head * s_sbh; /* Buffer containing the super block */
- struct ext4_super_block *s_es; /* Pointer to the super block in the buffer */
- struct buffer_head **s_group_desc;
- unsigned long s_mount_opt;
- ext4_fsblk_t s_sb_block;
- uid_t s_resuid;
- gid_t s_resgid;
- unsigned short s_mount_state;
- unsigned short s_pad;
- int s_addr_per_block_bits;
- int s_desc_per_block_bits;
- int s_inode_size;
- int s_first_ino;
- unsigned int s_inode_readahead_blks;
- spinlock_t s_next_gen_lock;
- u32 s_next_generation;
- u32 s_hash_seed[4];
- int s_def_hash_version;
- int s_hash_unsigned; /* 3 if hash should be signed, 0 if not */
- struct percpu_counter s_freeblocks_counter;
- struct percpu_counter s_freeinodes_counter;
- struct percpu_counter s_dirs_counter;
- struct percpu_counter s_dirtyblocks_counter;
- struct blockgroup_lock *s_blockgroup_lock;
- struct proc_dir_entry *s_proc;
- struct kobject s_kobj;
- struct completion s_kobj_unregister;
-
- /* Journaling */
- struct inode *s_journal_inode;
- struct journal_s *s_journal;
- struct list_head s_orphan;
- struct mutex s_orphan_lock;
- struct mutex s_resize_lock;
- unsigned long s_commit_interval;
- u32 s_max_batch_time;
- u32 s_min_batch_time;
- struct block_device *journal_bdev;
-#ifdef CONFIG_JBD2_DEBUG
- struct timer_list turn_ro_timer; /* For turning read-only (crash simulation) */
- wait_queue_head_t ro_wait_queue; /* For people waiting for the fs to go read-only */
-#endif
-#ifdef CONFIG_QUOTA
- char *s_qf_names[MAXQUOTAS]; /* Names of quota files with journalled quota */
- int s_jquota_fmt; /* Format of quota to use */
-#endif
- unsigned int s_want_extra_isize; /* New inodes should reserve # bytes */
-
-#ifdef EXTENTS_STATS
- /* ext4 extents stats */
- unsigned long s_ext_min;
- unsigned long s_ext_max;
- unsigned long s_depth_max;
- spinlock_t s_ext_stats_lock;
- unsigned long s_ext_blocks;
- unsigned long s_ext_extents;
-#endif
-
- /* for buddy allocator */
- struct ext4_group_info ***s_group_info;
- struct inode *s_buddy_cache;
- long s_blocks_reserved;
- spinlock_t s_reserve_lock;
- spinlock_t s_md_lock;
- tid_t s_last_transaction;
- unsigned short *s_mb_offsets;
- unsigned int *s_mb_maxs;
-
- /* tunables */
- unsigned long s_stripe;
- unsigned int s_mb_stream_request;
- unsigned int s_mb_max_to_scan;
- unsigned int s_mb_min_to_scan;
- unsigned int s_mb_stats;
- unsigned int s_mb_order2_reqs;
- unsigned int s_mb_group_prealloc;
- /* where last allocation was done - for stream allocation */
- unsigned long s_mb_last_group;
- unsigned long s_mb_last_start;
-
- /* history to debug policy */
- struct ext4_mb_history *s_mb_history;
- int s_mb_history_cur;
- int s_mb_history_max;
- int s_mb_history_num;
- spinlock_t s_mb_history_lock;
- int s_mb_history_filter;
-
- /* stats for buddy allocator */
- spinlock_t s_mb_pa_lock;
- atomic_t s_bal_reqs; /* number of reqs with len > 1 */
- atomic_t s_bal_success; /* we found long enough chunks */
- atomic_t s_bal_allocated; /* in blocks */
- atomic_t s_bal_ex_scanned; /* total extents scanned */
- atomic_t s_bal_goals; /* goal hits */
- atomic_t s_bal_breaks; /* too long searches */
- atomic_t s_bal_2orders; /* 2^order hits */
- spinlock_t s_bal_lock;
- unsigned long s_mb_buddies_generated;
- unsigned long long s_mb_generation_time;
- atomic_t s_mb_lost_chunks;
- atomic_t s_mb_preallocated;
- atomic_t s_mb_discarded;
-
- /* locality groups */
- struct ext4_locality_group *s_locality_groups;
-
- /* for write statistics */
- unsigned long s_sectors_written_start;
- u64 s_kbytes_written;
-
- unsigned int s_log_groups_per_flex;
- struct flex_groups *s_flex_groups;
-};
-
-static inline spinlock_t *
-sb_bgl_lock(struct ext4_sb_info *sbi, unsigned int block_group)
-{
- return bgl_lock_ptr(sbi->s_blockgroup_lock, block_group);
-}