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-rw-r--r--fs/ext4/acl.c11
-rw-r--r--fs/ext4/acl.h2
-rw-r--r--fs/ext4/balloc.c3
-rw-r--r--fs/ext4/dir.c56
-rw-r--r--fs/ext4/ext4.h93
-rw-r--r--fs/ext4/ext4_extents.h8
-rw-r--r--fs/ext4/ext4_jbd2.h2
-rw-r--r--fs/ext4/extents.c88
-rw-r--r--fs/ext4/file.c22
-rw-r--r--fs/ext4/fsync.c4
-rw-r--r--fs/ext4/ialloc.c2
-rw-r--r--fs/ext4/inode.c75
-rw-r--r--fs/ext4/mballoc.c55
-rw-r--r--fs/ext4/migrate.c2
-rw-r--r--fs/ext4/namei.c69
-rw-r--r--fs/ext4/page-io.c7
-rw-r--r--fs/ext4/resize.c69
-rw-r--r--fs/ext4/super.c297
-rw-r--r--fs/ext4/xattr.c28
19 files changed, 545 insertions, 348 deletions
diff --git a/fs/ext4/acl.c b/fs/ext4/acl.c
index 5e2ed4504ea..e0270d1f8d8 100644
--- a/fs/ext4/acl.c
+++ b/fs/ext4/acl.c
@@ -238,10 +238,17 @@ ext4_set_acl(handle_t *handle, struct inode *inode, int type,
}
int
-ext4_check_acl(struct inode *inode, int mask)
+ext4_check_acl(struct inode *inode, int mask, unsigned int flags)
{
- struct posix_acl *acl = ext4_get_acl(inode, ACL_TYPE_ACCESS);
+ struct posix_acl *acl;
+
+ if (flags & IPERM_FLAG_RCU) {
+ if (!negative_cached_acl(inode, ACL_TYPE_ACCESS))
+ return -ECHILD;
+ return -EAGAIN;
+ }
+ acl = ext4_get_acl(inode, ACL_TYPE_ACCESS);
if (IS_ERR(acl))
return PTR_ERR(acl);
if (acl) {
diff --git a/fs/ext4/acl.h b/fs/ext4/acl.h
index 9d843d5deac..dec821168fd 100644
--- a/fs/ext4/acl.h
+++ b/fs/ext4/acl.h
@@ -54,7 +54,7 @@ static inline int ext4_acl_count(size_t size)
#ifdef CONFIG_EXT4_FS_POSIX_ACL
/* acl.c */
-extern int ext4_check_acl(struct inode *, int);
+extern int ext4_check_acl(struct inode *, int, unsigned int);
extern int ext4_acl_chmod(struct inode *);
extern int ext4_init_acl(handle_t *, struct inode *, struct inode *);
diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index 14c3af26c67..adf96b82278 100644
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -592,7 +592,8 @@ ext4_fsblk_t ext4_new_meta_blocks(handle_t *handle, struct inode *inode,
* Account for the allocated meta blocks. We will never
* fail EDQUOT for metdata, but we do account for it.
*/
- if (!(*errp) && EXT4_I(inode)->i_delalloc_reserved_flag) {
+ if (!(*errp) &&
+ ext4_test_inode_state(inode, EXT4_STATE_DELALLOC_RESERVED)) {
spin_lock(&EXT4_I(inode)->i_block_reservation_lock);
EXT4_I(inode)->i_allocated_meta_blocks += ar.len;
spin_unlock(&EXT4_I(inode)->i_block_reservation_lock);
diff --git a/fs/ext4/dir.c b/fs/ext4/dir.c
index ece76fb6a40..164c56092e5 100644
--- a/fs/ext4/dir.c
+++ b/fs/ext4/dir.c
@@ -60,9 +60,13 @@ static unsigned char get_dtype(struct super_block *sb, int filetype)
return (ext4_filetype_table[filetype]);
}
-
+/*
+ * Return 0 if the directory entry is OK, and 1 if there is a problem
+ *
+ * Note: this is the opposite of what ext2 and ext3 historically returned...
+ */
int __ext4_check_dir_entry(const char *function, unsigned int line,
- struct inode *dir,
+ struct inode *dir, struct file *filp,
struct ext4_dir_entry_2 *de,
struct buffer_head *bh,
unsigned int offset)
@@ -71,26 +75,37 @@ int __ext4_check_dir_entry(const char *function, unsigned int line,
const int rlen = ext4_rec_len_from_disk(de->rec_len,
dir->i_sb->s_blocksize);
- if (rlen < EXT4_DIR_REC_LEN(1))
+ if (unlikely(rlen < EXT4_DIR_REC_LEN(1)))
error_msg = "rec_len is smaller than minimal";
- else if (rlen % 4 != 0)
+ else if (unlikely(rlen % 4 != 0))
error_msg = "rec_len % 4 != 0";
- else if (rlen < EXT4_DIR_REC_LEN(de->name_len))
+ else if (unlikely(rlen < EXT4_DIR_REC_LEN(de->name_len)))
error_msg = "rec_len is too small for name_len";
- else if (((char *) de - bh->b_data) + rlen > dir->i_sb->s_blocksize)
+ else if (unlikely(((char *) de - bh->b_data) + rlen >
+ dir->i_sb->s_blocksize))
error_msg = "directory entry across blocks";
- else if (le32_to_cpu(de->inode) >
- le32_to_cpu(EXT4_SB(dir->i_sb)->s_es->s_inodes_count))
+ else if (unlikely(le32_to_cpu(de->inode) >
+ le32_to_cpu(EXT4_SB(dir->i_sb)->s_es->s_inodes_count)))
error_msg = "inode out of bounds";
+ else
+ return 0;
- if (error_msg != NULL)
- ext4_error_inode(dir, function, line, bh->b_blocknr,
- "bad entry in directory: %s - "
- "offset=%u(%u), inode=%u, rec_len=%d, name_len=%d",
- error_msg, (unsigned) (offset%bh->b_size), offset,
- le32_to_cpu(de->inode),
- rlen, de->name_len);
- return error_msg == NULL ? 1 : 0;
+ if (filp)
+ ext4_error_file(filp, function, line, bh ? bh->b_blocknr : 0,
+ "bad entry in directory: %s - offset=%u(%u), "
+ "inode=%u, rec_len=%d, name_len=%d",
+ error_msg, (unsigned) (offset%bh->b_size),
+ offset, le32_to_cpu(de->inode),
+ rlen, de->name_len);
+ else
+ ext4_error_inode(dir, function, line, bh ? bh->b_blocknr : 0,
+ "bad entry in directory: %s - offset=%u(%u), "
+ "inode=%u, rec_len=%d, name_len=%d",
+ error_msg, (unsigned) (offset%bh->b_size),
+ offset, le32_to_cpu(de->inode),
+ rlen, de->name_len);
+
+ return 1;
}
static int ext4_readdir(struct file *filp,
@@ -152,8 +167,9 @@ static int ext4_readdir(struct file *filp,
*/
if (!bh) {
if (!dir_has_error) {
- EXT4_ERROR_INODE(inode, "directory "
- "contains a hole at offset %Lu",
+ EXT4_ERROR_FILE(filp, 0,
+ "directory contains a "
+ "hole at offset %llu",
(unsigned long long) filp->f_pos);
dir_has_error = 1;
}
@@ -194,8 +210,8 @@ revalidate:
while (!error && filp->f_pos < inode->i_size
&& offset < sb->s_blocksize) {
de = (struct ext4_dir_entry_2 *) (bh->b_data + offset);
- if (!ext4_check_dir_entry(inode, de,
- bh, offset)) {
+ if (ext4_check_dir_entry(inode, filp, de,
+ bh, offset)) {
/*
* On error, skip the f_pos to the next block
*/
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 1f253a9a141..1de65f57203 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -62,8 +62,8 @@
#define EXT4_ERROR_INODE_BLOCK(inode, block, fmt, a...) \
ext4_error_inode((inode), __func__, __LINE__, (block), (fmt), ## a)
-#define EXT4_ERROR_FILE(file, fmt, a...) \
- ext4_error_file(__func__, __LINE__, (file), (fmt), ## a)
+#define EXT4_ERROR_FILE(file, block, fmt, a...) \
+ ext4_error_file((file), __func__, __LINE__, (block), (fmt), ## a)
/* data type for block offset of block group */
typedef int ext4_grpblk_t;
@@ -561,22 +561,6 @@ struct ext4_new_group_data {
#define EXT4_IOC32_SETVERSION_OLD FS_IOC32_SETVERSION
#endif
-
-/*
- * Mount options
- */
-struct ext4_mount_options {
- unsigned long s_mount_opt;
- uid_t s_resuid;
- gid_t s_resgid;
- unsigned long s_commit_interval;
- u32 s_min_batch_time, s_max_batch_time;
-#ifdef CONFIG_QUOTA
- int s_jquota_fmt;
- char *s_qf_names[MAXQUOTAS];
-#endif
-};
-
/* Max physical block we can address w/o extents */
#define EXT4_MAX_BLOCK_FILE_PHYS 0xFFFFFFFF
@@ -709,6 +693,8 @@ do { \
if (EXT4_FITS_IN_INODE(raw_inode, EXT4_I(inode), xtime ## _extra)) \
ext4_decode_extra_time(&(inode)->xtime, \
raw_inode->xtime ## _extra); \
+ else \
+ (inode)->xtime.tv_nsec = 0; \
} while (0)
#define EXT4_EINODE_GET_XTIME(xtime, einode, raw_inode) \
@@ -719,6 +705,8 @@ do { \
if (EXT4_FITS_IN_INODE(raw_inode, einode, xtime ## _extra)) \
ext4_decode_extra_time(&(einode)->xtime, \
raw_inode->xtime ## _extra); \
+ else \
+ (einode)->xtime.tv_nsec = 0; \
} while (0)
#define i_disk_version osd1.linux1.l_i_version
@@ -750,12 +738,13 @@ do { \
/*
* storage for cached extent
+ * If ec_len == 0, then the cache is invalid.
+ * If ec_start == 0, then the cache represents a gap (null mapping)
*/
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;
};
/*
@@ -774,10 +763,12 @@ struct ext4_inode_info {
* near to their parent directory's inode.
*/
ext4_group_t i_block_group;
+ ext4_lblk_t i_dir_start_lookup;
+#if (BITS_PER_LONG < 64)
unsigned long i_state_flags; /* Dynamic state flags */
+#endif
unsigned long i_flags;
- ext4_lblk_t i_dir_start_lookup;
#ifdef CONFIG_EXT4_FS_XATTR
/*
* Extended attributes can be read independently of the main file
@@ -820,7 +811,7 @@ struct ext4_inode_info {
*/
struct rw_semaphore i_data_sem;
struct inode vfs_inode;
- struct jbd2_inode jinode;
+ struct jbd2_inode *jinode;
struct ext4_ext_cache i_cached_extent;
/*
@@ -840,14 +831,12 @@ struct ext4_inode_info {
unsigned int i_reserved_data_blocks;
unsigned int i_reserved_meta_blocks;
unsigned int i_allocated_meta_blocks;
- unsigned short i_delalloc_reserved_flag;
- sector_t i_da_metadata_calc_last_lblock;
+ ext4_lblk_t i_da_metadata_calc_last_lblock;
int i_da_metadata_calc_len;
/* on-disk additional length */
__u16 i_extra_isize;
- spinlock_t i_block_reservation_lock;
#ifdef CONFIG_QUOTA
/* quota space reservation, managed internally by quota code */
qsize_t i_reserved_quota;
@@ -856,9 +845,11 @@ struct ext4_inode_info {
/* completed IOs that might need unwritten extents handling */
struct list_head i_completed_io_list;
spinlock_t i_completed_io_lock;
+ atomic_t i_ioend_count; /* Number of outstanding io_end structs */
/* current io_end structure for async DIO write*/
ext4_io_end_t *cur_aio_dio;
- atomic_t i_ioend_count; /* Number of outstanding io_end structs */
+
+ spinlock_t i_block_reservation_lock;
/*
* Transactions that contain inode's metadata needed to complete
@@ -917,11 +908,20 @@ struct ext4_inode_info {
#define EXT4_MOUNT_DISCARD 0x40000000 /* Issue DISCARD requests */
#define EXT4_MOUNT_INIT_INODE_TABLE 0x80000000 /* Initialize uninitialized itables */
-#define clear_opt(o, opt) o &= ~EXT4_MOUNT_##opt
-#define set_opt(o, opt) o |= EXT4_MOUNT_##opt
+#define clear_opt(sb, opt) EXT4_SB(sb)->s_mount_opt &= \
+ ~EXT4_MOUNT_##opt
+#define set_opt(sb, opt) EXT4_SB(sb)->s_mount_opt |= \
+ EXT4_MOUNT_##opt
#define test_opt(sb, opt) (EXT4_SB(sb)->s_mount_opt & \
EXT4_MOUNT_##opt)
+#define clear_opt2(sb, opt) EXT4_SB(sb)->s_mount_opt2 &= \
+ ~EXT4_MOUNT2_##opt
+#define set_opt2(sb, opt) EXT4_SB(sb)->s_mount_opt2 |= \
+ EXT4_MOUNT2_##opt
+#define test_opt2(sb, opt) (EXT4_SB(sb)->s_mount_opt2 & \
+ EXT4_MOUNT2_##opt)
+
#define ext4_set_bit ext2_set_bit
#define ext4_set_bit_atomic ext2_set_bit_atomic
#define ext4_clear_bit ext2_clear_bit
@@ -1087,6 +1087,7 @@ struct ext4_sb_info {
struct ext4_super_block *s_es; /* Pointer to the super block in the buffer */
struct buffer_head **s_group_desc;
unsigned int s_mount_opt;
+ unsigned int s_mount_opt2;
unsigned int s_mount_flags;
ext4_fsblk_t s_sb_block;
uid_t s_resuid;
@@ -1237,24 +1238,39 @@ enum {
EXT4_STATE_EXT_MIGRATE, /* Inode is migrating */
EXT4_STATE_DIO_UNWRITTEN, /* need convert on dio done*/
EXT4_STATE_NEWENTRY, /* File just added to dir */
+ EXT4_STATE_DELALLOC_RESERVED, /* blks already reserved for delalloc */
};
-#define EXT4_INODE_BIT_FNS(name, field) \
+#define EXT4_INODE_BIT_FNS(name, field, offset) \
static inline int ext4_test_inode_##name(struct inode *inode, int bit) \
{ \
- return test_bit(bit, &EXT4_I(inode)->i_##field); \
+ return test_bit(bit + (offset), &EXT4_I(inode)->i_##field); \
} \
static inline void ext4_set_inode_##name(struct inode *inode, int bit) \
{ \
- set_bit(bit, &EXT4_I(inode)->i_##field); \
+ set_bit(bit + (offset), &EXT4_I(inode)->i_##field); \
} \
static inline void ext4_clear_inode_##name(struct inode *inode, int bit) \
{ \
- clear_bit(bit, &EXT4_I(inode)->i_##field); \
+ clear_bit(bit + (offset), &EXT4_I(inode)->i_##field); \
}
-EXT4_INODE_BIT_FNS(flag, flags)
-EXT4_INODE_BIT_FNS(state, state_flags)
+EXT4_INODE_BIT_FNS(flag, flags, 0)
+#if (BITS_PER_LONG < 64)
+EXT4_INODE_BIT_FNS(state, state_flags, 0)
+
+static inline void ext4_clear_state_flags(struct ext4_inode_info *ei)
+{
+ (ei)->i_state_flags = 0;
+}
+#else
+EXT4_INODE_BIT_FNS(state, flags, 32)
+
+static inline void ext4_clear_state_flags(struct ext4_inode_info *ei)
+{
+ /* We depend on the fact that callers will set i_flags */
+}
+#endif
#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
@@ -1642,10 +1658,12 @@ extern unsigned ext4_init_block_bitmap(struct super_block *sb,
/* dir.c */
extern int __ext4_check_dir_entry(const char *, unsigned int, struct inode *,
+ struct file *,
struct ext4_dir_entry_2 *,
struct buffer_head *, unsigned int);
-#define ext4_check_dir_entry(dir, de, bh, offset) \
- __ext4_check_dir_entry(__func__, __LINE__, (dir), (de), (bh), (offset))
+#define ext4_check_dir_entry(dir, filp, de, bh, offset) \
+ unlikely(__ext4_check_dir_entry(__func__, __LINE__, (dir), (filp), \
+ (de), (bh), (offset)))
extern int ext4_htree_store_dirent(struct file *dir_file, __u32 hash,
__u32 minor_hash,
struct ext4_dir_entry_2 *dirent);
@@ -1653,6 +1671,7 @@ extern void ext4_htree_free_dir_info(struct dir_private_info *p);
/* fsync.c */
extern int ext4_sync_file(struct file *, int);
+extern int ext4_flush_completed_IO(struct inode *);
/* hash.c */
extern int ext4fs_dirhash(const char *name, int len, struct
@@ -1752,8 +1771,8 @@ extern void ext4_error_inode(struct inode *, const char *, unsigned int,
ext4_fsblk_t, const char *, ...)
__attribute__ ((format (printf, 5, 6)));
extern void ext4_error_file(struct file *, const char *, unsigned int,
- const char *, ...)
- __attribute__ ((format (printf, 4, 5)));
+ ext4_fsblk_t, const char *, ...)
+ __attribute__ ((format (printf, 5, 6)));
extern void __ext4_std_error(struct super_block *, const char *,
unsigned int, int);
extern void __ext4_abort(struct super_block *, const char *, unsigned int,
diff --git a/fs/ext4/ext4_extents.h b/fs/ext4/ext4_extents.h
index 28ce70fd9cd..2e29abb30f7 100644
--- a/fs/ext4/ext4_extents.h
+++ b/fs/ext4/ext4_extents.h
@@ -119,10 +119,6 @@ struct ext4_ext_path {
* structure for external API
*/
-#define EXT4_EXT_CACHE_NO 0
-#define EXT4_EXT_CACHE_GAP 1
-#define EXT4_EXT_CACHE_EXTENT 2
-
/*
* to be called by ext4_ext_walk_space()
* negative retcode - error
@@ -197,7 +193,7 @@ static inline unsigned short ext_depth(struct inode *inode)
static inline void
ext4_ext_invalidate_cache(struct inode *inode)
{
- EXT4_I(inode)->i_cached_extent.ec_type = EXT4_EXT_CACHE_NO;
+ EXT4_I(inode)->i_cached_extent.ec_len = 0;
}
static inline void ext4_ext_mark_uninitialized(struct ext4_extent *ext)
@@ -278,7 +274,7 @@ static inline void ext4_idx_store_pblock(struct ext4_extent_idx *ix,
}
extern int ext4_ext_calc_metadata_amount(struct inode *inode,
- sector_t lblocks);
+ ext4_lblk_t lblocks);
extern int ext4_extent_tree_init(handle_t *, struct inode *);
extern int ext4_ext_calc_credits_for_single_extent(struct inode *inode,
int num,
diff --git a/fs/ext4/ext4_jbd2.h b/fs/ext4/ext4_jbd2.h
index b0bd792c58c..d8b992e658c 100644
--- a/fs/ext4/ext4_jbd2.h
+++ b/fs/ext4/ext4_jbd2.h
@@ -253,7 +253,7 @@ static inline int ext4_journal_force_commit(journal_t *journal)
static inline int ext4_jbd2_file_inode(handle_t *handle, struct inode *inode)
{
if (ext4_handle_valid(handle))
- return jbd2_journal_file_inode(handle, &EXT4_I(inode)->jinode);
+ return jbd2_journal_file_inode(handle, EXT4_I(inode)->jinode);
return 0;
}
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 966ecb0d8f8..d202d765dad 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -117,11 +117,33 @@ static ext4_fsblk_t ext4_ext_find_goal(struct inode *inode,
struct ext4_extent *ex;
depth = path->p_depth;
- /* try to predict block placement */
+ /*
+ * Try to predict block placement assuming that we are
+ * filling in a file which will eventually be
+ * non-sparse --- i.e., in the case of libbfd writing
+ * an ELF object sections out-of-order but in a way
+ * the eventually results in a contiguous object or
+ * executable file, or some database extending a table
+ * space file. However, this is actually somewhat
+ * non-ideal if we are writing a sparse file such as
+ * qemu or KVM writing a raw image file that is going
+ * to stay fairly sparse, since it will end up
+ * fragmenting the file system's free space. Maybe we
+ * should have some hueristics or some way to allow
+ * userspace to pass a hint to file system,
+ * especiially if the latter case turns out to be
+ * common.
+ */
ex = path[depth].p_ext;
- if (ex)
- return (ext4_ext_pblock(ex) +
- (block - le32_to_cpu(ex->ee_block)));
+ if (ex) {
+ ext4_fsblk_t ext_pblk = ext4_ext_pblock(ex);
+ ext4_lblk_t ext_block = le32_to_cpu(ex->ee_block);
+
+ if (block > ext_block)
+ return ext_pblk + (block - ext_block);
+ else
+ return ext_pblk - (ext_block - block);
+ }
/* it looks like index is empty;
* try to find starting block from index itself */
@@ -244,7 +266,7 @@ static inline int ext4_ext_space_root_idx(struct inode *inode, int check)
* to allocate @blocks
* Worse case is one block per extent
*/
-int ext4_ext_calc_metadata_amount(struct inode *inode, sector_t lblock)
+int ext4_ext_calc_metadata_amount(struct inode *inode, ext4_lblk_t lblock)
{
struct ext4_inode_info *ei = EXT4_I(inode);
int idxs, num = 0;
@@ -1872,12 +1894,10 @@ static int ext4_ext_walk_space(struct inode *inode, ext4_lblk_t block,
cbex.ec_block = start;
cbex.ec_len = end - start;
cbex.ec_start = 0;
- cbex.ec_type = EXT4_EXT_CACHE_GAP;
} else {
cbex.ec_block = le32_to_cpu(ex->ee_block);
cbex.ec_len = ext4_ext_get_actual_len(ex);
cbex.ec_start = ext4_ext_pblock(ex);
- cbex.ec_type = EXT4_EXT_CACHE_EXTENT;
}
if (unlikely(cbex.ec_len == 0)) {
@@ -1917,13 +1937,12 @@ static int ext4_ext_walk_space(struct inode *inode, ext4_lblk_t block,
static void
ext4_ext_put_in_cache(struct inode *inode, ext4_lblk_t block,
- __u32 len, ext4_fsblk_t start, int type)
+ __u32 len, ext4_fsblk_t start)
{
struct ext4_ext_cache *cex;
BUG_ON(len == 0);
spin_lock(&EXT4_I(inode)->i_block_reservation_lock);
cex = &EXT4_I(inode)->i_cached_extent;
- cex->ec_type = type;
cex->ec_block = block;
cex->ec_len = len;
cex->ec_start = start;
@@ -1976,15 +1995,18 @@ ext4_ext_put_gap_in_cache(struct inode *inode, struct ext4_ext_path *path,
}
ext_debug(" -> %u:%lu\n", lblock, len);
- ext4_ext_put_in_cache(inode, lblock, len, 0, EXT4_EXT_CACHE_GAP);
+ ext4_ext_put_in_cache(inode, lblock, len, 0);
}
+/*
+ * Return 0 if cache is invalid; 1 if the cache is valid
+ */
static int
ext4_ext_in_cache(struct inode *inode, ext4_lblk_t block,
struct ext4_extent *ex)
{
struct ext4_ext_cache *cex;
- int ret = EXT4_EXT_CACHE_NO;
+ int ret = 0;
/*
* We borrow i_block_reservation_lock to protect i_cached_extent
@@ -1993,11 +2015,9 @@ ext4_ext_in_cache(struct inode *inode, ext4_lblk_t block,
cex = &EXT4_I(inode)->i_cached_extent;
/* has cache valid data? */
- if (cex->ec_type == EXT4_EXT_CACHE_NO)
+ if (cex->ec_len == 0)
goto errout;
- BUG_ON(cex->ec_type != EXT4_EXT_CACHE_GAP &&
- cex->ec_type != EXT4_EXT_CACHE_EXTENT);
if (in_range(block, cex->ec_block, cex->ec_len)) {
ex->ee_block = cpu_to_le32(cex->ec_block);
ext4_ext_store_pblock(ex, cex->ec_start);
@@ -2005,7 +2025,7 @@ ext4_ext_in_cache(struct inode *inode, ext4_lblk_t block,
ext_debug("%u cached by %u:%u:%llu\n",
block,
cex->ec_block, cex->ec_len, cex->ec_start);
- ret = cex->ec_type;
+ ret = 1;
}
errout:
spin_unlock(&EXT4_I(inode)->i_block_reservation_lock);
@@ -3082,7 +3102,7 @@ static void unmap_underlying_metadata_blocks(struct block_device *bdev,
* Handle EOFBLOCKS_FL flag, clearing it if necessary
*/
static int check_eofblocks_fl(handle_t *handle, struct inode *inode,
- struct ext4_map_blocks *map,
+ ext4_lblk_t lblk,
struct ext4_ext_path *path,
unsigned int len)
{
@@ -3112,7 +3132,7 @@ static int check_eofblocks_fl(handle_t *handle, struct inode *inode,
* this turns out to be false, we can bail out from this
* function immediately.
*/
- if (map->m_lblk + len < le32_to_cpu(last_ex->ee_block) +
+ if (lblk + len < le32_to_cpu(last_ex->ee_block) +
ext4_ext_get_actual_len(last_ex))
return 0;
/*
@@ -3168,8 +3188,8 @@ ext4_ext_handle_uninitialized_extents(handle_t *handle, struct inode *inode,
path);
if (ret >= 0) {
ext4_update_inode_fsync_trans(handle, inode, 1);
- err = check_eofblocks_fl(handle, inode, map, path,
- map->m_len);
+ err = check_eofblocks_fl(handle, inode, map->m_lblk,
+ path, map->m_len);
} else
err = ret;
goto out2;
@@ -3199,7 +3219,8 @@ ext4_ext_handle_uninitialized_extents(handle_t *handle, struct inode *inode,
ret = ext4_ext_convert_to_initialized(handle, inode, map, path);
if (ret >= 0) {
ext4_update_inode_fsync_trans(handle, inode, 1);
- err = check_eofblocks_fl(handle, inode, map, path, map->m_len);
+ err = check_eofblocks_fl(handle, inode, map->m_lblk, path,
+ map->m_len);
if (err < 0)
goto out2;
}
@@ -3276,7 +3297,7 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode,
struct ext4_extent_header *eh;
struct ext4_extent newex, *ex;
ext4_fsblk_t newblock;
- int err = 0, depth, ret, cache_type;
+ int err = 0, depth, ret;
unsigned int allocated = 0;
struct ext4_allocation_request ar;
ext4_io_end_t *io = EXT4_I(inode)->cur_aio_dio;
@@ -3285,9 +3306,8 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode,
map->m_lblk, map->m_len, inode->i_ino);
/* check in cache */
- cache_type = ext4_ext_in_cache(inode, map->m_lblk, &newex);
- if (cache_type) {
- if (cache_type == EXT4_EXT_CACHE_GAP) {
+ if (ext4_ext_in_cache(inode, map->m_lblk, &newex)) {
+ if (!newex.ee_start_lo && !newex.ee_start_hi) {
if ((flags & EXT4_GET_BLOCKS_CREATE) == 0) {
/*
* block isn't allocated yet and
@@ -3296,7 +3316,7 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode,
goto out2;
}
/* we should allocate requested block */
- } else if (cache_type == EXT4_EXT_CACHE_EXTENT) {
+ } else {
/* block is already allocated */
newblock = map->m_lblk
- le32_to_cpu(newex.ee_block)
@@ -3305,8 +3325,6 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode,
allocated = ext4_ext_get_actual_len(&newex) -
(map->m_lblk - le32_to_cpu(newex.ee_block));
goto out;
- } else {
- BUG();
}
}
@@ -3357,8 +3375,7 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode,
/* Do not put uninitialized extent in the cache */
if (!ext4_ext_is_uninitialized(ex)) {
ext4_ext_put_in_cache(inode, ee_block,
- ee_len, ee_start,
- EXT4_EXT_CACHE_EXTENT);
+ ee_len, ee_start);
goto out;
}
ret = ext4_ext_handle_uninitialized_extents(handle,
@@ -3456,7 +3473,7 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode,
map->m_flags |= EXT4_MAP_UNINIT;
}
- err = check_eofblocks_fl(handle, inode, map, path, ar.len);
+ err = check_eofblocks_fl(handle, inode, map->m_lblk, path, ar.len);
if (err)
goto out2;
@@ -3490,8 +3507,7 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode,
* when it is _not_ an uninitialized extent.
*/
if ((flags & EXT4_GET_BLOCKS_UNINIT_EXT) == 0) {
- ext4_ext_put_in_cache(inode, map->m_lblk, allocated, newblock,
- EXT4_EXT_CACHE_EXTENT);
+ ext4_ext_put_in_cache(inode, map->m_lblk, allocated, newblock);
ext4_update_inode_fsync_trans(handle, inode, 1);
} else
ext4_update_inode_fsync_trans(handle, inode, 0);
@@ -3519,6 +3535,12 @@ void ext4_ext_truncate(struct inode *inode)
int err = 0;
/*
+ * finish any pending end_io work so we won't run the risk of
+ * converting any truncated blocks to initialized later
+ */
+ ext4_flush_completed_IO(inode);
+
+ /*
* probably first extent we're gonna free will be last in block
*/
err = ext4_writepage_trans_blocks(inode);
@@ -3767,7 +3789,7 @@ static int ext4_ext_fiemap_cb(struct inode *inode, struct ext4_ext_path *path,
logical = (__u64)newex->ec_block << blksize_bits;
- if (newex->ec_type == EXT4_EXT_CACHE_GAP) {
+ if (newex->ec_start == 0) {
pgoff_t offset;
struct page *page;
struct buffer_head *bh = NULL;
diff --git a/fs/ext4/file.c b/fs/ext4/file.c
index 5a5c55ddcee..bb003dc9fff 100644
--- a/fs/ext4/file.c
+++ b/fs/ext4/file.c
@@ -104,6 +104,7 @@ static int ext4_file_open(struct inode * inode, struct file * filp)
{
struct super_block *sb = inode->i_sb;
struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
+ struct ext4_inode_info *ei = EXT4_I(inode);
struct vfsmount *mnt = filp->f_path.mnt;
struct path path;
char buf[64], *cp;
@@ -127,6 +128,27 @@ static int ext4_file_open(struct inode * inode, struct file * filp)
ext4_mark_super_dirty(sb);
}
}
+ /*
+ * Set up the jbd2_inode if we are opening the inode for
+ * writing and the journal is present
+ */
+ if (sbi->s_journal && !ei->jinode && (filp->f_mode & FMODE_WRITE)) {
+ struct jbd2_inode *jinode = jbd2_alloc_inode(GFP_KERNEL);
+
+ spin_lock(&inode->i_lock);
+ if (!ei->jinode) {
+ if (!jinode) {
+ spin_unlock(&inode->i_lock);
+ return -ENOMEM;
+ }
+ ei->jinode = jinode;
+ jbd2_journal_init_jbd_inode(ei->jinode, inode);
+ jinode = NULL;
+ }
+ spin_unlock(&inode->i_lock);
+ if (unlikely(jinode != NULL))
+ jbd2_free_inode(jinode);
+ }
return dquot_file_open(inode, filp);
}
diff --git a/fs/ext4/fsync.c b/fs/ext4/fsync.c
index c1a7bc923cf..7829b287822 100644
--- a/fs/ext4/fsync.c
+++ b/fs/ext4/fsync.c
@@ -75,7 +75,7 @@ static void dump_completed_IO(struct inode * inode)
* to written.
* The function return the number of pending IOs on success.
*/
-static int flush_completed_IO(struct inode *inode)
+extern int ext4_flush_completed_IO(struct inode *inode)
{
ext4_io_end_t *io;
struct ext4_inode_info *ei = EXT4_I(inode);
@@ -169,7 +169,7 @@ int ext4_sync_file(struct file *file, int datasync)
if (inode->i_sb->s_flags & MS_RDONLY)
return 0;
- ret = flush_completed_IO(inode);
+ ret = ext4_flush_completed_IO(inode);
if (ret < 0)
return ret;
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index 1ce240a23eb..eb9097aec6f 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -1027,7 +1027,7 @@ got:
inode->i_generation = sbi->s_next_generation++;
spin_unlock(&sbi->s_next_gen_lock);
- ei->i_state_flags = 0;
+ ext4_clear_state_flags(ei); /* Only relevant on 32-bit archs */
ext4_set_inode_state(inode, EXT4_STATE_NEW);
ei->i_extra_isize = EXT4_SB(sb)->s_want_extra_isize;
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index ef9d5be0b2a..9f7f9e49914 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -39,7 +39,9 @@
#include <linux/bio.h>
#include <linux/workqueue.h>
#include <linux/kernel.h>
+#include <linux/printk.h>
#include <linux/slab.h>
+#include <linux/ratelimit.h>
#include "ext4_jbd2.h"
#include "xattr.h"
@@ -54,10 +56,17 @@ static inline int ext4_begin_ordered_truncate(struct inode *inode,
loff_t new_size)
{
trace_ext4_begin_ordered_truncate(inode, new_size);
- return jbd2_journal_begin_ordered_truncate(
- EXT4_SB(inode->i_sb)->s_journal,
- &EXT4_I(inode)->jinode,
- new_size);
+ /*
+ * If jinode is zero, then we never opened the file for
+ * writing, so there's no need to call
+ * jbd2_journal_begin_ordered_truncate() since there's no
+ * outstanding writes we need to flush.
+ */
+ if (!EXT4_I(inode)->jinode)
+ return 0;
+ return jbd2_journal_begin_ordered_truncate(EXT4_JOURNAL(inode),
+ EXT4_I(inode)->jinode,
+ new_size);
}
static void ext4_invalidatepage(struct page *page, unsigned long offset);
@@ -552,7 +561,7 @@ static ext4_fsblk_t ext4_find_goal(struct inode *inode, ext4_lblk_t block,
}
/**
- * ext4_blks_to_allocate: Look up the block map and count the number
+ * ext4_blks_to_allocate - Look up the block map and count the number
* of direct blocks need to be allocated for the given branch.
*
* @branch: chain of indirect blocks
@@ -591,13 +600,19 @@ static int ext4_blks_to_allocate(Indirect *branch, int k, unsigned int blks,
/**
* ext4_alloc_blocks: multiple allocate blocks needed for a branch
+ * @handle: handle for this transaction
+ * @inode: inode which needs allocated blocks
+ * @iblock: the logical block to start allocated at
+ * @goal: preferred physical block of allocation
* @indirect_blks: the number of blocks need to allocate for indirect
* blocks
- *
+ * @blks: number of desired blocks
* @new_blocks: on return it will store the new block numbers for
* the indirect blocks(if needed) and the first direct block,
- * @blks: on return it will store the total number of allocated
- * direct blocks
+ * @err: on return it will store the error code
+ *
+ * This function will return the number of blocks allocated as
+ * requested by the passed-in parameters.
*/
static int ext4_alloc_blocks(handle_t *handle, struct inode *inode,
ext4_lblk_t iblock, ext4_fsblk_t goal,
@@ -711,9 +726,11 @@ failed_out:
/**
* ext4_alloc_branch - allocate and set up a chain of blocks.
+ * @handle: handle for this transaction
* @inode: owner
* @indirect_blks: number of allocated indirect blocks
* @blks: number of allocated direct blocks
+ * @goal: preferred place for allocation
* @offsets: offsets (in the blocks) to store the pointers to next.
* @branch: place to store the chain in.
*
@@ -826,6 +843,7 @@ failed:
/**
* ext4_splice_branch - splice the allocated branch onto inode.
+ * @handle: handle for this transaction
* @inode: owner
* @block: (logical) number of block we are adding
* @chain: chain of indirect blocks (with a missing link - see
@@ -1081,7 +1099,7 @@ static int ext4_indirect_calc_metadata_amount(struct inode *inode,
* Calculate the number of metadata blocks need to reserve
* to allocate a block located at @lblock
*/
-static int ext4_calc_metadata_amount(struct inode *inode, sector_t lblock)
+static int ext4_calc_metadata_amount(struct inode *inode, ext4_lblk_t lblock)
{
if (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))
return ext4_ext_calc_metadata_amount(inode, lblock);
@@ -1320,7 +1338,7 @@ int ext4_map_blocks(handle_t *handle, struct inode *inode,
* avoid double accounting
*/
if (flags & EXT4_GET_BLOCKS_DELALLOC_RESERVE)
- EXT4_I(inode)->i_delalloc_reserved_flag = 1;
+ ext4_set_inode_state(inode, EXT4_STATE_DELALLOC_RESERVED);
/*
* We need to check for EXT4 here because migrate
* could have changed the inode type in between