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-rw-r--r--fs/ext4/ext4.h85
1 files changed, 49 insertions, 36 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index b213449a5..349afebe2 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -42,6 +42,18 @@
*/
/*
+ * with AGGRESSIVE_CHECK allocator runs consistency checks over
+ * structures. these checks slow things down a lot
+ */
+#define AGGRESSIVE_CHECK__
+
+/*
+ * with DOUBLE_CHECK defined mballoc creates persistent in-core
+ * bitmaps, maintains and uses them to check for double allocations
+ */
+#define DOUBLE_CHECK__
+
+/*
* Define EXT4FS_DEBUG to produce debug messages
*/
#undef EXT4FS_DEBUG
@@ -182,9 +194,9 @@ typedef struct ext4_io_end {
struct bio *bio; /* Linked list of completed
* bios covering the extent */
unsigned int flag; /* unwritten or not */
+ atomic_t count; /* reference counter */
loff_t offset; /* offset in the file */
ssize_t size; /* size of the extent */
- atomic_t count; /* reference counter */
} ext4_io_end_t;
struct ext4_io_submit {
@@ -1047,13 +1059,8 @@ struct ext4_inode_info {
* transaction reserved
*/
struct list_head i_rsv_conversion_list;
- /*
- * Completed IOs that need unwritten extents handling and don't have
- * transaction reserved
- */
- atomic_t i_ioend_count; /* Number of outstanding io_end structs */
- atomic_t i_unwritten; /* Nr. of inflight conversions pending */
struct work_struct i_rsv_conversion_work;
+ atomic_t i_unwritten; /* Nr. of inflight conversions pending */
spinlock_t i_block_reservation_lock;
@@ -1527,25 +1534,6 @@ static inline int ext4_valid_inum(struct super_block *sb, unsigned long ino)
ino <= le32_to_cpu(EXT4_SB(sb)->s_es->s_inodes_count));
}
-static inline void ext4_set_io_unwritten_flag(struct inode *inode,
- struct ext4_io_end *io_end)
-{
- if (!(io_end->flag & EXT4_IO_END_UNWRITTEN)) {
- io_end->flag |= EXT4_IO_END_UNWRITTEN;
- atomic_inc(&EXT4_I(inode)->i_unwritten);
- }
-}
-
-static inline ext4_io_end_t *ext4_inode_aio(struct inode *inode)
-{
- return inode->i_private;
-}
-
-static inline void ext4_inode_aio_set(struct inode *inode, ext4_io_end_t *io)
-{
- inode->i_private = io;
-}
-
/*
* Inode dynamic state flags
*/
@@ -1996,7 +1984,7 @@ ext4_rec_len_from_disk(__le16 dlen, unsigned blocksize)
{
unsigned len = le16_to_cpu(dlen);
-#if (PAGE_CACHE_SIZE >= 65536)
+#if (PAGE_SIZE >= 65536)
if (len == EXT4_MAX_REC_LEN || len == 0)
return blocksize;
return (len & 65532) | ((len & 3) << 16);
@@ -2009,7 +1997,7 @@ static inline __le16 ext4_rec_len_to_disk(unsigned len, unsigned blocksize)
{
if ((len > blocksize) || (blocksize > (1 << 18)) || (len & 3))
BUG();
-#if (PAGE_CACHE_SIZE >= 65536)
+#if (PAGE_SIZE >= 65536)
if (len < 65536)
return cpu_to_le16(len);
if (len == blocksize) {
@@ -2317,11 +2305,13 @@ extern struct kmem_cache *ext4_crypt_info_cachep;
bool ext4_valid_contents_enc_mode(uint32_t mode);
uint32_t ext4_validate_encryption_key_size(uint32_t mode, uint32_t size);
extern struct workqueue_struct *ext4_read_workqueue;
-struct ext4_crypto_ctx *ext4_get_crypto_ctx(struct inode *inode);
+struct ext4_crypto_ctx *ext4_get_crypto_ctx(struct inode *inode,
+ gfp_t gfp_flags);
void ext4_release_crypto_ctx(struct ext4_crypto_ctx *ctx);
void ext4_restore_control_page(struct page *data_page);
struct page *ext4_encrypt(struct inode *inode,
- struct page *plaintext_page);
+ struct page *plaintext_page,
+ gfp_t gfp_flags);
int ext4_decrypt(struct page *page);
int ext4_encrypted_zeroout(struct inode *inode, ext4_lblk_t lblk,
ext4_fsblk_t pblk, ext4_lblk_t len);
@@ -2529,12 +2519,14 @@ extern int ext4_trim_fs(struct super_block *, struct fstrim_range *);
int ext4_inode_is_fast_symlink(struct inode *inode);
struct buffer_head *ext4_getblk(handle_t *, struct inode *, ext4_lblk_t, int);
struct buffer_head *ext4_bread(handle_t *, struct inode *, ext4_lblk_t, int);
-int ext4_get_block_write(struct inode *inode, sector_t iblock,
- struct buffer_head *bh_result, int create);
+int ext4_get_block_unwritten(struct inode *inode, sector_t iblock,
+ struct buffer_head *bh_result, int create);
int ext4_dax_mmap_get_block(struct inode *inode, sector_t iblock,
struct buffer_head *bh_result, int create);
int ext4_get_block(struct inode *inode, sector_t iblock,
- struct buffer_head *bh_result, int create);
+ struct buffer_head *bh_result, int create);
+int ext4_dio_get_block(struct inode *inode, sector_t iblock,
+ struct buffer_head *bh_result, int create);
int ext4_da_get_block_prep(struct inode *inode, sector_t iblock,
struct buffer_head *bh, int create);
int ext4_walk_page_buffers(handle_t *handle,
@@ -2582,6 +2574,9 @@ extern void ext4_da_update_reserve_space(struct inode *inode,
int used, int quota_claim);
extern int ext4_issue_zeroout(struct inode *inode, ext4_lblk_t lblk,
ext4_fsblk_t pblk, ext4_lblk_t len);
+extern int ext4_get_next_extent(struct inode *inode, ext4_lblk_t lblk,
+ unsigned int map_len,
+ struct extent_status *result);
/* indirect.c */
extern int ext4_ind_map_blocks(handle_t *handle, struct inode *inode,
@@ -3308,15 +3303,33 @@ static inline void ext4_inode_resume_unlocked_dio(struct inode *inode)
#define EXT4_WQ_HASH_SZ 37
#define ext4_ioend_wq(v) (&ext4__ioend_wq[((unsigned long)(v)) %\
EXT4_WQ_HASH_SZ])
-#define ext4_aio_mutex(v) (&ext4__aio_mutex[((unsigned long)(v)) %\
- EXT4_WQ_HASH_SZ])
extern wait_queue_head_t ext4__ioend_wq[EXT4_WQ_HASH_SZ];
-extern struct mutex ext4__aio_mutex[EXT4_WQ_HASH_SZ];
#define EXT4_RESIZING 0
extern int ext4_resize_begin(struct super_block *sb);
extern void ext4_resize_end(struct super_block *sb);
+static inline void ext4_set_io_unwritten_flag(struct inode *inode,
+ struct ext4_io_end *io_end)
+{
+ if (!(io_end->flag & EXT4_IO_END_UNWRITTEN)) {
+ io_end->flag |= EXT4_IO_END_UNWRITTEN;
+ atomic_inc(&EXT4_I(inode)->i_unwritten);
+ }
+}
+
+static inline void ext4_clear_io_unwritten_flag(ext4_io_end_t *io_end)
+{
+ struct inode *inode = io_end->inode;
+
+ if (io_end->flag & EXT4_IO_END_UNWRITTEN) {
+ io_end->flag &= ~EXT4_IO_END_UNWRITTEN;
+ /* Wake up anyone waiting on unwritten extent conversion */
+ if (atomic_dec_and_test(&EXT4_I(inode)->i_unwritten))
+ wake_up_all(ext4_ioend_wq(inode));
+ }
+}
+
#endif /* __KERNEL__ */
#define EFSBADCRC EBADMSG /* Bad CRC detected */
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-19 03:33:54 +0000