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The first major feature for ext4 this merge window is the largedir

Browse source 
feature, which allows ext4 directories to support over 2 billion
 directory entries (assuming ~64 byte file names; in practice, users
 will run into practical performance limits first.)  This feature was
 originally written by the Lustre team, and credit goes to Artem
 Blagodarenko from Seagate for getting this feature upstream.
 
 The second major major feature allows ext4 to support extended
 attribute values up to 64k.  This feature was also originally from
 Lustre, and has been enhanced by Tahsin Erdogan from Google with a
 deduplication feature so that if multiple files have the same xattr
 value (for example, Windows ACL's stored by Samba), only one copy will
 be stored on disk for encoding and caching efficiency.
 
 We also have the usual set of bug fixes, cleanups, and optimizations.
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Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

Pull ext4 updates from Ted Ts'o:
 "The first major feature for ext4 this merge window is the largedir
  feature, which allows ext4 directories to support over 2 billion
  directory entries (assuming ~64 byte file names; in practice, users
  will run into practical performance limits first.) This feature was
  originally written by the Lustre team, and credit goes to Artem
  Blagodarenko from Seagate for getting this feature upstream.

  The second major major feature allows ext4 to support extended
  attribute values up to 64k. This feature was also originally from
  Lustre, and has been enhanced by Tahsin Erdogan from Google with a
  deduplication feature so that if multiple files have the same xattr
  value (for example, Windows ACL's stored by Samba), only one copy will
  be stored on disk for encoding and caching efficiency.

  We also have the usual set of bug fixes, cleanups, and optimizations"

* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (47 commits)
  ext4: fix spelling mistake: "prellocated" -> "preallocated"
  ext4: fix __ext4_new_inode() journal credits calculation
  ext4: skip ext4_init_security() and encryption on ea_inodes
  fs: generic_block_bmap(): initialize all of the fields in the temp bh
  ext4: change fast symlink test to not rely on i_blocks
  ext4: require key for truncate(2) of encrypted file
  ext4: don't bother checking for encryption key in ->mmap()
  ext4: check return value of kstrtoull correctly in reserved_clusters_store
  ext4: fix off-by-one fsmap error on 1k block filesystems
  ext4: return EFSBADCRC if a bad checksum error is found in ext4_find_entry()
  ext4: return EIO on read error in ext4_find_entry
  ext4: forbid encrypting root directory
  ext4: send parallel discards on commit completions
  ext4: avoid unnecessary stalls in ext4_evict_inode()
  ext4: add nombcache mount option
  ext4: strong binding of xattr inode references
  ext4: eliminate xattr entry e_hash recalculation for removes
  ext4: reserve space for xattr entries/names
  quota: add get_inode_usage callback to transfer multi-inode charges
  ext4: xattr inode deduplication
  ...
This commit is contained in:
Linus Torvalds 2017-07-09 09:31:22 -07:00
commit bc2c6421cb
30 changed files with 2117 additions and 549 deletions
Download patch file Download diff file Expand all files Collapse all files

8
fs/buffer.c
View file

@ -3031,11 +3031,11 @@ EXPORT_SYMBOL(block_write_full_page);
sector_t generic_block_bmap(struct address_space *mapping, sector_t block,
get_block_t *get_block)
{
struct buffer_head tmp;
struct inode *inode = mapping->host;
tmp.b_state = 0;
tmp.b_blocknr = 0;
tmp.b_size = i_blocksize(inode);
struct buffer_head tmp = {
.b_size = i_blocksize(inode),
};
get_block(inode, block, &tmp, 0);
return tmp.b_blocknr;
}

1
fs/crypto/policy.c
View file

@ -256,6 +256,7 @@ int fscrypt_inherit_context(struct inode *parent, struct inode *child,
memcpy(ctx.master_key_descriptor, ci->ci_master_key,
FS_KEY_DESCRIPTOR_SIZE);
get_random_bytes(ctx.nonce, FS_KEY_DERIVATION_NONCE_SIZE);
BUILD_BUG_ON(sizeof(ctx) != FSCRYPT_SET_CONTEXT_MAX_SIZE);
res = parent->i_sb->s_cop->set_context(child, &ctx,
sizeof(ctx), fs_data);
if (res)

2
fs/ext2/ext2.h
View file

@ -113,7 +113,7 @@ struct ext2_sb_info {
* of the mount options.
*/
spinlock_t s_lock;
struct mb_cache *s_mb_cache;
struct mb_cache *s_ea_block_cache;
};
static inline spinlock_t *

16
fs/ext2/super.c
View file

@ -147,9 +147,9 @@ static void ext2_put_super (struct super_block * sb)
ext2_quota_off_umount(sb);
if (sbi->s_mb_cache) {
ext2_xattr_destroy_cache(sbi->s_mb_cache);
sbi->s_mb_cache = NULL;
if (sbi->s_ea_block_cache) {
ext2_xattr_destroy_cache(sbi->s_ea_block_cache);
sbi->s_ea_block_cache = NULL;
}
if (!(sb->s_flags & MS_RDONLY)) {
struct ext2_super_block *es = sbi->s_es;
@ -1131,9 +1131,9 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
}
#ifdef CONFIG_EXT2_FS_XATTR
sbi->s_mb_cache = ext2_xattr_create_cache();
if (!sbi->s_mb_cache) {
ext2_msg(sb, KERN_ERR, "Failed to create an mb_cache");
sbi->s_ea_block_cache = ext2_xattr_create_cache();
if (!sbi->s_ea_block_cache) {
ext2_msg(sb, KERN_ERR, "Failed to create ea_block_cache");
goto failed_mount3;
}
#endif
@ -1182,8 +1182,8 @@ cantfind_ext2:
sb->s_id);
goto failed_mount;
failed_mount3:
if (sbi->s_mb_cache)
ext2_xattr_destroy_cache(sbi->s_mb_cache);
if (sbi->s_ea_block_cache)
ext2_xattr_destroy_cache(sbi->s_ea_block_cache);
percpu_counter_destroy(&sbi->s_freeblocks_counter);
percpu_counter_destroy(&sbi->s_freeinodes_counter);
percpu_counter_destroy(&sbi->s_dirs_counter);

48
fs/ext2/xattr.c
View file

@ -121,6 +121,8 @@ const struct xattr_handler *ext2_xattr_handlers[] = {
NULL
};
#define EA_BLOCK_CACHE(inode) (EXT2_SB(inode->i_sb)->s_ea_block_cache)
static inline const struct xattr_handler *
ext2_xattr_handler(int name_index)
{
@ -150,7 +152,7 @@ ext2_xattr_get(struct inode *inode, int name_index, const char *name,
size_t name_len, size;
char *end;
int error;
struct mb_cache *ext2_mb_cache = EXT2_SB(inode->i_sb)->s_mb_cache;
struct mb_cache *ea_block_cache = EA_BLOCK_CACHE(inode);
ea_idebug(inode, "name=%d.%s, buffer=%p, buffer_size=%ld",
name_index, name, buffer, (long)buffer_size);
@ -195,7 +197,7 @@ bad_block: ext2_error(inode->i_sb, "ext2_xattr_get",
goto found;
entry = next;
}
if (ext2_xattr_cache_insert(ext2_mb_cache, bh))
if (ext2_xattr_cache_insert(ea_block_cache, bh))
ea_idebug(inode, "cache insert failed");
error = -ENODATA;
goto cleanup;
@ -208,7 +210,7 @@ found:
le16_to_cpu(entry->e_value_offs) + size > inode->i_sb->s_blocksize)
goto bad_block;
if (ext2_xattr_cache_insert(ext2_mb_cache, bh))
if (ext2_xattr_cache_insert(ea_block_cache, bh))
ea_idebug(inode, "cache insert failed");
if (buffer) {
error = -ERANGE;
@ -246,7 +248,7 @@ ext2_xattr_list(struct dentry *dentry, char *buffer, size_t buffer_size)
char *end;
size_t rest = buffer_size;
int error;
struct mb_cache *ext2_mb_cache = EXT2_SB(inode->i_sb)->s_mb_cache;
struct mb_cache *ea_block_cache = EA_BLOCK_CACHE(inode);
ea_idebug(inode, "buffer=%p, buffer_size=%ld",
buffer, (long)buffer_size);
@ -281,7 +283,7 @@ bad_block: ext2_error(inode->i_sb, "ext2_xattr_list",
goto bad_block;
entry = next;
}
if (ext2_xattr_cache_insert(ext2_mb_cache, bh))
if (ext2_xattr_cache_insert(ea_block_cache, bh))
ea_idebug(inode, "cache insert failed");
/* list the attribute names */
@ -493,8 +495,8 @@ bad_block: ext2_error(sb, "ext2_xattr_set",
* This must happen under buffer lock for
* ext2_xattr_set2() to reliably detect modified block
*/
mb_cache_entry_delete_block(EXT2_SB(sb)->s_mb_cache,
hash, bh->b_blocknr);
mb_cache_entry_delete(EA_BLOCK_CACHE(inode), hash,
bh->b_blocknr);
/* keep the buffer locked while modifying it. */
} else {
@ -627,7 +629,7 @@ ext2_xattr_set2(struct inode *inode, struct buffer_head *old_bh,
struct super_block *sb = inode->i_sb;
struct buffer_head *new_bh = NULL;
int error;
struct mb_cache *ext2_mb_cache = EXT2_SB(sb)->s_mb_cache;
struct mb_cache *ea_block_cache = EA_BLOCK_CACHE(inode);
if (header) {
new_bh = ext2_xattr_cache_find(inode, header);
@ -655,7 +657,7 @@ ext2_xattr_set2(struct inode *inode, struct buffer_head *old_bh,
don't need to change the reference count. */
new_bh = old_bh;
get_bh(new_bh);
ext2_xattr_cache_insert(ext2_mb_cache, new_bh);
ext2_xattr_cache_insert(ea_block_cache, new_bh);
} else {
/* We need to allocate a new block */
ext2_fsblk_t goal = ext2_group_first_block_no(sb,
@ -676,7 +678,7 @@ ext2_xattr_set2(struct inode *inode, struct buffer_head *old_bh,
memcpy(new_bh->b_data, header, new_bh->b_size);
set_buffer_uptodate(new_bh);
unlock_buffer(new_bh);
ext2_xattr_cache_insert(ext2_mb_cache, new_bh);
ext2_xattr_cache_insert(ea_block_cache, new_bh);
ext2_xattr_update_super_block(sb);
}
@ -721,8 +723,8 @@ ext2_xattr_set2(struct inode *inode, struct buffer_head *old_bh,
* This must happen under buffer lock for
* ext2_xattr_set2() to reliably detect freed block
*/
mb_cache_entry_delete_block(ext2_mb_cache,
hash, old_bh->b_blocknr);
mb_cache_entry_delete(ea_block_cache, hash,
old_bh->b_blocknr);
/* Free the old block. */
ea_bdebug(old_bh, "freeing");
ext2_free_blocks(inode, old_bh->b_blocknr, 1);
@ -795,8 +797,8 @@ ext2_xattr_delete_inode(struct inode *inode)
* This must happen under buffer lock for ext2_xattr_set2() to
* reliably detect freed block
*/
mb_cache_entry_delete_block(EXT2_SB(inode->i_sb)->s_mb_cache,
hash, bh->b_blocknr);
mb_cache_entry_delete(EA_BLOCK_CACHE(inode), hash,
bh->b_blocknr);
ext2_free_blocks(inode, EXT2_I(inode)->i_file_acl, 1);
get_bh(bh);
bforget(bh);
@ -897,21 +899,21 @@ ext2_xattr_cache_find(struct inode *inode, struct ext2_xattr_header *header)
{
__u32 hash = le32_to_cpu(header->h_hash);
struct mb_cache_entry *ce;
struct mb_cache *ext2_mb_cache = EXT2_SB(inode->i_sb)->s_mb_cache;
struct mb_cache *ea_block_cache = EA_BLOCK_CACHE(inode);
if (!header->h_hash)
return NULL; /* never share */
ea_idebug(inode, "looking for cached blocks [%x]", (int)hash);
again:
ce = mb_cache_entry_find_first(ext2_mb_cache, hash);
ce = mb_cache_entry_find_first(ea_block_cache, hash);
while (ce) {
struct buffer_head *bh;
bh = sb_bread(inode->i_sb, ce->e_block);
bh = sb_bread(inode->i_sb, ce->e_value);
if (!bh) {
ext2_error(inode->i_sb, "ext2_xattr_cache_find",
"inode %ld: block %ld read error",
inode->i_ino, (unsigned long) ce->e_block);
inode->i_ino, (unsigned long) ce->e_value);
} else {
lock_buffer(bh);
/*
@ -924,27 +926,27 @@ again:
* entry is still hashed is reliable.
*/
if (hlist_bl_unhashed(&ce->e_hash_list)) {
mb_cache_entry_put(ext2_mb_cache, ce);
mb_cache_entry_put(ea_block_cache, ce);
unlock_buffer(bh);
brelse(bh);
goto again;
} else if (le32_to_cpu(HDR(bh)->h_refcount) >
EXT2_XATTR_REFCOUNT_MAX) {
ea_idebug(inode, "block %ld refcount %d>%d",
(unsigned long) ce->e_block,
(unsigned long) ce->e_value,
le32_to_cpu(HDR(bh)->h_refcount),
EXT2_XATTR_REFCOUNT_MAX);
} else if (!ext2_xattr_cmp(header, HDR(bh))) {
ea_bdebug(bh, "b_count=%d",
atomic_read(&(bh->b_count)));
mb_cache_entry_touch(ext2_mb_cache, ce);
mb_cache_entry_put(ext2_mb_cache, ce);
mb_cache_entry_touch(ea_block_cache, ce);
mb_cache_entry_put(ea_block_cache, ce);
return bh;
}
unlock_buffer(bh);
brelse(bh);
}
ce = mb_cache_entry_find_next(ext2_mb_cache, ce);
ce = mb_cache_entry_find_next(ea_block_cache, ce);
}
return NULL;
}

21
fs/ext4/acl.c
View file

@ -183,7 +183,7 @@ ext4_get_acl(struct inode *inode, int type)
*/
static int
__ext4_set_acl(handle_t *handle, struct inode *inode, int type,
struct posix_acl *acl)
struct posix_acl *acl, int xattr_flags)
{
int name_index;
void *value = NULL;
@ -218,7 +218,7 @@ __ext4_set_acl(handle_t *handle, struct inode *inode, int type,
}
error = ext4_xattr_set_handle(handle, inode, name_index, "",
value, size, 0);
value, size, xattr_flags);
kfree(value);
if (!error)
@ -231,18 +231,23 @@ int
ext4_set_acl(struct inode *inode, struct posix_acl *acl, int type)
{
handle_t *handle;
int error, retries = 0;
int error, credits, retries = 0;
size_t acl_size = acl ? ext4_acl_size(acl->a_count) : 0;
error = dquot_initialize(inode);
if (error)
return error;
retry:
handle = ext4_journal_start(inode, EXT4_HT_XATTR,
ext4_jbd2_credits_xattr(inode));
error = ext4_xattr_set_credits(inode, acl_size, false /* is_create */,
&credits);
if (error)
return error;
handle = ext4_journal_start(inode, EXT4_HT_XATTR, credits);
if (IS_ERR(handle))
return PTR_ERR(handle);
error = __ext4_set_acl(handle, inode, type, acl);
error = __ext4_set_acl(handle, inode, type, acl, 0 /* xattr_flags */);
ext4_journal_stop(handle);
if (error == -ENOSPC && ext4_should_retry_alloc(inode->i_sb, &retries))
goto retry;
@ -267,13 +272,13 @@ ext4_init_acl(handle_t *handle, struct inode *inode, struct inode *dir)
if (default_acl) {
error = __ext4_set_acl(handle, inode, ACL_TYPE_DEFAULT,
default_acl);
default_acl, XATTR_CREATE);
posix_acl_release(default_acl);
}
if (acl) {
if (!error)
error = __ext4_set_acl(handle, inode, ACL_TYPE_ACCESS,
acl);
acl, XATTR_CREATE);
posix_acl_release(acl);
}
return error;

63
fs/ext4/ext4.h
View file

@ -1114,6 +1114,7 @@ struct ext4_inode_info {
/*
* Mount flags set via mount options or defaults
*/
#define EXT4_MOUNT_NO_MBCACHE 0x00001 /* Do not use mbcache */
#define EXT4_MOUNT_GRPID 0x00004 /* Create files with directory's group */
#define EXT4_MOUNT_DEBUG 0x00008 /* Some debugging messages */
#define EXT4_MOUNT_ERRORS_CONT 0x00010 /* Continue on errors */
@ -1444,6 +1445,8 @@ struct ext4_sb_info {
unsigned int *s_mb_maxs;
unsigned int s_group_info_size;
unsigned int s_mb_free_pending;
struct list_head s_freed_data_list; /* List of blocks to be freed
after commit completed */
/* tunables */
unsigned long s_stripe;
@ -1516,7 +1519,8 @@ struct ext4_sb_info {
struct list_head s_es_list; /* List of inodes with reclaimable extents */
long s_es_nr_inode;
struct ext4_es_stats s_es_stats;
struct mb_cache *s_mb_cache;
struct mb_cache *s_ea_block_cache;
struct mb_cache *s_ea_inode_cache;
spinlock_t s_es_lock ____cacheline_aligned_in_smp;
/* Ratelimit ext4 messages. */
@ -1797,10 +1801,12 @@ EXT4_FEATURE_INCOMPAT_FUNCS(encrypt, ENCRYPT)
EXT4_FEATURE_INCOMPAT_EXTENTS| \
EXT4_FEATURE_INCOMPAT_64BIT| \
EXT4_FEATURE_INCOMPAT_FLEX_BG| \
EXT4_FEATURE_INCOMPAT_EA_INODE| \
EXT4_FEATURE_INCOMPAT_MMP | \
EXT4_FEATURE_INCOMPAT_INLINE_DATA | \
EXT4_FEATURE_INCOMPAT_ENCRYPT | \
EXT4_FEATURE_INCOMPAT_CSUM_SEED)
EXT4_FEATURE_INCOMPAT_CSUM_SEED | \
EXT4_FEATURE_INCOMPAT_LARGEDIR)
#define EXT4_FEATURE_RO_COMPAT_SUPP (EXT4_FEATURE_RO_COMPAT_SPARSE_SUPER| \
EXT4_FEATURE_RO_COMPAT_LARGE_FILE| \
EXT4_FEATURE_RO_COMPAT_GDT_CSUM| \
@ -2098,6 +2104,12 @@ static inline struct ext4_inode *ext4_raw_inode(struct ext4_iloc *iloc)
return (struct ext4_inode *) (iloc->bh->b_data + iloc->offset);
}
static inline bool ext4_is_quota_file(struct inode *inode)
{
return IS_NOQUOTA(inode) &&
!(EXT4_I(inode)->i_flags & EXT4_EA_INODE_FL);
}
/*
* This structure is stuffed into the struct file's private_data field
* for directories. It is where we put information so that we can do
@ -2126,6 +2138,16 @@ ext4_group_first_block_no(struct super_block *sb, ext4_group_t group_no)
*/
#define ERR_BAD_DX_DIR (-(MAX_ERRNO - 1))
/* htree levels for ext4 */
#define EXT4_HTREE_LEVEL_COMPAT 2
#define EXT4_HTREE_LEVEL 3
static inline int ext4_dir_htree_level(struct super_block *sb)
{
return ext4_has_feature_largedir(sb) ?
EXT4_HTREE_LEVEL : EXT4_HTREE_LEVEL_COMPAT;
}
/*
* Timeout and state flag for lazy initialization inode thread.
*/
@ -2389,16 +2411,17 @@ extern int ext4fs_dirhash(const char *name, int len, struct
/* ialloc.c */
extern struct inode *__ext4_new_inode(handle_t *, struct inode *, umode_t,
const struct qstr *qstr, __u32 goal,
uid_t *owner, int handle_type,
unsigned int line_no, int nblocks);
uid_t *owner, __u32 i_flags,
int handle_type, unsigned int line_no,
int nblocks);
#define ext4_new_inode(handle, dir, mode, qstr, goal, owner) \
#define ext4_new_inode(handle, dir, mode, qstr, goal, owner, i_flags) \
__ext4_new_inode((handle), (dir), (mode), (qstr), (goal), (owner), \
0, 0, 0)
i_flags, 0, 0, 0)
#define ext4_new_inode_start_handle(dir, mode, qstr, goal, owner, \
type, nblocks) \
__ext4_new_inode(NULL, (dir), (mode), (qstr), (goal), (owner), \
(type), __LINE__, (nblocks))
0, (type), __LINE__, (nblocks))
extern void ext4_free_inode(handle_t *, struct inode *);
@ -2433,6 +2456,7 @@ extern int ext4_mb_add_groupinfo(struct super_block *sb,
extern int ext4_group_add_blocks(handle_t *handle, struct super_block *sb,
ext4_fsblk_t block, unsigned long count);
extern int ext4_trim_fs(struct super_block *, struct fstrim_range *);
extern void ext4_process_freed_data(struct super_block *sb, tid_t commit_tid);
/* inode.c */
int ext4_inode_is_fast_symlink(struct inode *inode);
@ -2704,19 +2728,20 @@ extern void ext4_group_desc_csum_set(struct super_block *sb, __u32 group,
extern int ext4_register_li_request(struct super_block *sb,
ext4_group_t first_not_zeroed);
static inline int ext4_has_group_desc_csum(struct super_block *sb)
{
return ext4_has_feature_gdt_csum(sb) ||
EXT4_SB(sb)->s_chksum_driver != NULL;
}
static inline int ext4_has_metadata_csum(struct super_block *sb)
{
WARN_ON_ONCE(ext4_has_feature_metadata_csum(sb) &&
!EXT4_SB(sb)->s_chksum_driver);
return (EXT4_SB(sb)->s_chksum_driver != NULL);
return ext4_has_feature_metadata_csum(sb) &&
(EXT4_SB(sb)->s_chksum_driver != NULL);
}
static inline int ext4_has_group_desc_csum(struct super_block *sb)
{
return ext4_has_feature_gdt_csum(sb) || ext4_has_metadata_csum(sb);
}
static inline ext4_fsblk_t ext4_blocks_count(struct ext4_super_block *es)
{
return ((ext4_fsblk_t)le32_to_cpu(es->s_blocks_count_hi) << 32) |
@ -2756,13 +2781,15 @@ static inline void ext4_r_blocks_count_set(struct ext4_super_block *es,
es->s_r_blocks_count_hi = cpu_to_le32(blk >> 32);
}
static inline loff_t ext4_isize(struct ext4_inode *raw_inode)
static inline loff_t ext4_isize(struct super_block *sb,
struct ext4_inode *raw_inode)
{
if (S_ISREG(le16_to_cpu(raw_inode->i_mode)))
if (ext4_has_feature_largedir(sb) ||
S_ISREG(le16_to_cpu(raw_inode->i_mode)))
return ((loff_t)le32_to_cpu(raw_inode->i_size_high) << 32) |
le32_to_cpu(raw_inode->i_size_lo);
else
return (loff_t) le32_to_cpu(raw_inode->i_size_lo);
return (loff_t) le32_to_cpu(raw_inode->i_size_lo);
}
static inline void ext4_isize_set(struct ext4_inode *raw_inode, loff_t i_size)

23
fs/ext4/ext4_jbd2.h
View file

@ -77,7 +77,14 @@
#define EXT4_RESERVE_TRANS_BLOCKS 12U
#define EXT4_INDEX_EXTRA_TRANS_BLOCKS 8
/*
* Number of credits needed if we need to insert an entry into a
* directory. For each new index block, we need 4 blocks (old index
* block, new index block, bitmap block, bg summary). For normal
* htree directories there are 2 levels; if the largedir feature
* enabled it's 3 levels.
*/
#define EXT4_INDEX_EXTRA_TRANS_BLOCKS 12U
#ifdef CONFIG_QUOTA
/* Amount of blocks needed for quota update - we know that the structure was
@ -104,20 +111,6 @@
#define EXT4_MAXQUOTAS_INIT_BLOCKS(sb) (EXT4_MAXQUOTAS*EXT4_QUOTA_INIT_BLOCKS(sb))
#define EXT4_MAXQUOTAS_DEL_BLOCKS(sb) (EXT4_MAXQUOTAS*EXT4_QUOTA_DEL_BLOCKS(sb))
static inline int ext4_jbd2_credits_xattr(struct inode *inode)
{
int credits = EXT4_DATA_TRANS_BLOCKS(inode->i_sb);
/*
* In case of inline data, we may push out the data to a block,
* so we need to reserve credits for this eventuality
*/
if (ext4_has_inline_data(inode))
credits += ext4_writepage_trans_blocks(inode) + 1;
return credits;
}
/*
* Ext4 handle operation types -- for logging purposes
*/

3
fs/ext4/extents.c
View file

@ -2488,7 +2488,8 @@ int ext4_ext_index_trans_blocks(struct inode *inode, int extents)
static inline int get_default_free_blocks_flags(struct inode *inode)
{
if (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode))
if (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode) ||
ext4_test_inode_flag(inode, EXT4_INODE_EA_INODE))
return EXT4_FREE_BLOCKS_METADATA | EXT4_FREE_BLOCKS_FORGET;
else if (ext4_should_journal_data(inode))
return EXT4_FREE_BLOCKS_FORGET;

7
fs/ext4/file.c
View file

@ -364,13 +364,6 @@ static int ext4_file_mmap(struct file *file, struct vm_area_struct *vma)
if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb))))
return -EIO;
if (ext4_encrypted_inode(inode)) {
int err = fscrypt_get_encryption_info(inode);
if (err)
return 0;
if (!fscrypt_has_encryption_key(inode))
return -ENOKEY;
}
file_accessed(file);
if (IS_DAX(file_inode(file))) {
vma->vm_ops = &ext4_dax_vm_ops;

4
fs/ext4/fsmap.c
View file

@ -480,6 +480,7 @@ static int ext4_getfsmap_datadev(struct super_block *sb,
struct ext4_sb_info *sbi = EXT4_SB(sb);
ext4_fsblk_t start_fsb;
ext4_fsblk_t end_fsb;
ext4_fsblk_t bofs;
ext4_fsblk_t eofs;
ext4_group_t start_ag;
ext4_group_t end_ag;
@ -487,9 +488,12 @@ static int ext4_getfsmap_datadev(struct super_block *sb,
ext4_grpblk_t last_cluster;
int error = 0;
bofs = le32_to_cpu(sbi->s_es->s_first_data_block);
eofs = ext4_blocks_count(sbi->s_es);
if (keys[0].fmr_physical >= eofs)
return 0;
else if (keys[0].fmr_physical < bofs)
keys[0].fmr_physical = bofs;
if (keys[1].fmr_physical >= eofs)
keys[1].fmr_physical = eofs - 1;
start_fsb = keys[0].fmr_physical;

76
fs/ext4/ialloc.c
View file

@ -294,7 +294,6 @@ void ext4_free_inode(handle_t *handle, struct inode *inode)
* as writing the quota to disk may need the lock as well.
*/
dquot_initialize(inode);
ext4_xattr_delete_inode(handle, inode);
dquot_free_inode(inode);
dquot_drop(inode);
@ -743,8 +742,9 @@ out:
*/
struct inode *__ext4_new_inode(handle_t *handle, struct inode *dir,
umode_t mode, const struct qstr *qstr,
__u32 goal, uid_t *owner, int handle_type,
unsigned int line_no, int nblocks)
__u32 goal, uid_t *owner, __u32 i_flags,
int handle_type, unsigned int line_no,
int nblocks)
{
struct super_block *sb;
struct buffer_head *inode_bitmap_bh = NULL;
@ -766,30 +766,69 @@ struct inode *__ext4_new_inode(handle_t *handle, struct inode *dir,
if (!dir || !dir->i_nlink)
return ERR_PTR(-EPERM);
if (unlikely(ext4_forced_shutdown(EXT4_SB(dir->i_sb))))
sb = dir->i_sb;
sbi = EXT4_SB(sb);
if (unlikely(ext4_forced_shutdown(sbi)))
return ERR_PTR(-EIO);
if ((ext4_encrypted_inode(dir) ||
DUMMY_ENCRYPTION_ENABLED(EXT4_SB(dir->i_sb))) &&
(S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode))) {
if ((ext4_encrypted_inode(dir) || DUMMY_ENCRYPTION_ENABLED(sbi)) &&
(S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode)) &&
!(i_flags & EXT4_EA_INODE_FL)) {
err = fscrypt_get_encryption_info(dir);
if (err)
return ERR_PTR(err);
if (!fscrypt_has_encryption_key(dir))
return ERR_PTR(-ENOKEY);
if (!handle)
nblocks += EXT4_DATA_TRANS_BLOCKS(dir->i_sb);
encrypt = 1;
}
sb = dir->i_sb;
if (!handle && sbi->s_journal && !(i_flags & EXT4_EA_INODE_FL)) {
#ifdef CONFIG_EXT4_FS_POSIX_ACL
struct posix_acl *p = get_acl(dir, ACL_TYPE_DEFAULT);
if (p) {
int acl_size = p->a_count * sizeof(ext4_acl_entry);
nblocks += (S_ISDIR(mode) ? 2 : 1) *
__ext4_xattr_set_credits(sb, NULL /* inode */,
NULL /* block_bh */, acl_size,
true /* is_create */);
posix_acl_release(p);
}
#endif
#ifdef CONFIG_SECURITY
{
int num_security_xattrs = 1;
#ifdef CONFIG_INTEGRITY
num_security_xattrs++;
#endif
/*
* We assume that security xattrs are never
* more than 1k. In practice they are under
* 128 bytes.
*/
nblocks += num_security_xattrs *
__ext4_xattr_set_credits(sb, NULL /* inode */,
NULL /* block_bh */, 1024,
true /* is_create */);
}
#endif
if (encrypt)
nblocks += __ext4_xattr_set_credits(sb,
NULL /* inode */, NULL /* block_bh */,
FSCRYPT_SET_CONTEXT_MAX_SIZE,
true /* is_create */);
}
ngroups = ext4_get_groups_count(sb);
trace_ext4_request_inode(dir, mode);
inode = new_inode(sb);
if (!inode)
return ERR_PTR(-ENOMEM);
ei = EXT4_I(inode);
sbi = EXT4_SB(sb);
/*
* Initialize owners and quota early so that we don't have to account
@ -1053,6 +1092,7 @@ got:
/* Don't inherit extent flag from directory, amongst others. */
ei->i_flags =
ext4_mask_flags(mode, EXT4_I(dir)->i_flags & EXT4_FL_INHERITED);
ei->i_flags |= i_flags;
ei->i_file_acl = 0;
ei->i_dtime = 0;
ei->i_block_group = group;
@ -1109,13 +1149,15 @@ got:
goto fail_free_drop;
}
err = ext4_init_acl(handle, inode, dir);
if (err)
goto fail_free_drop;
if (!(ei->i_flags & EXT4_EA_INODE_FL)) {
err = ext4_init_acl(handle, inode, dir);
if (err)
goto fail_free_drop;
err = ext4_init_security(handle, inode, dir, qstr);
if (err)
goto fail_free_drop;
err = ext4_init_security(handle, inode, dir, qstr);
if (err)
goto fail_free_drop;
}
if (ext4_has_feature_extents(sb)) {
/* set extent flag only for directory, file and normal symlink*/

3
fs/ext4/indirect.c
View file

@ -829,7 +829,8 @@ static int ext4_clear_blocks(handle_t *handle, struct inode *inode,
int flags = EXT4_FREE_BLOCKS_VALIDATED;
int err;
if (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode))
if (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode) ||
ext4_test_inode_flag(inode, EXT4_INODE_EA_INODE))
flags |= EXT4_FREE_BLOCKS_FORGET | EXT4_FREE_BLOCKS_METADATA;
else if (ext4_should_journal_data(inode))
flags |= EXT4_FREE_BLOCKS_FORGET;

2
fs/ext4/inline.c
View file

@ -61,7 +61,7 @@ static int get_max_inline_xattr_value_size(struct inode *inode,
/* Compute min_offs. */
for (; !IS_LAST_ENTRY(entry); entry = EXT4_XATTR_NEXT(entry)) {
if (!entry->e_value_block && entry->e_value_size) {
if (!entry->e_value_inum && entry->e_value_size) {
size_t offs = le16_to_cpu(entry->e_value_offs);
if (offs < min_offs)
min_offs = offs;

92
fs/ext4/inode.c
View file

@ -144,16 +144,12 @@ static int ext4_meta_trans_blocks(struct inode *inode, int lblocks,
/*
* Test whether an inode is a fast symlink.
* A fast symlink has its symlink data stored in ext4_inode_info->i_data.
*/
int ext4_inode_is_fast_symlink(struct inode *inode)
{
int ea_blocks = EXT4_I(inode)->i_file_acl ?
EXT4_CLUSTER_SIZE(inode->i_sb) >> 9 : 0;
if (ext4_has_inline_data(inode))
return 0;
return (S_ISLNK(inode->i_mode) && inode->i_blocks - ea_blocks == 0);
return S_ISLNK(inode->i_mode) && inode->i_size &&
(inode->i_size < EXT4_N_BLOCKS * 4);
}
/*
@ -189,6 +185,8 @@ void ext4_evict_inode(struct inode *inode)
{
handle_t *handle;
int err;
int extra_credits = 3;
struct ext4_xattr_inode_array *ea_inode_array = NULL;
trace_ext4_evict_inode(inode);
@ -213,7 +211,8 @@ void ext4_evict_inode(struct inode *inode)
*/
if (inode->i_ino != EXT4_JOURNAL_INO &&
ext4_should_journal_data(inode) &&
(S_ISLNK(inode->i_mode) || S_ISREG(inode->i_mode))) {
(S_ISLNK(inode->i_mode) || S_ISREG(inode->i_mode)) &&
inode->i_data.nrpages) {
journal_t *journal = EXT4_SB(inode->i_sb)->s_journal;
tid_t commit_tid = EXT4_I(inode)->i_datasync_tid;
@ -238,8 +237,12 @@ void ext4_evict_inode(struct inode *inode)
* protection against it
*/
sb_start_intwrite(inode->i_sb);
if (!IS_NOQUOTA(inode))
extra_credits += EXT4_MAXQUOTAS_DEL_BLOCKS(inode->i_sb);
handle = ext4_journal_start(inode, EXT4_HT_TRUNCATE,
ext4_blocks_for_truncate(inode)+3);
ext4_blocks_for_truncate(inode)+extra_credits);
if (IS_ERR(handle)) {
ext4_std_error(inode->i_sb, PTR_ERR(handle));
/*
@ -254,6 +257,16 @@ void ext4_evict_inode(struct inode *inode)
if (IS_SYNC(inode))
ext4_handle_sync(handle);
/*
* Set inode->i_size to 0 before calling ext4_truncate(). We need
* special handling of symlinks here because i_size is used to
* determine whether ext4_inode_info->i_data contains symlink data or
* block mappings. Setting i_size to 0 will remove its fast symlink
* status. Erase i_data so that it becomes a valid empty block map.
*/
if (ext4_inode_is_fast_symlink(inode))
memset(EXT4_I(inode)->i_data, 0, sizeof(EXT4_I(inode)->i_data));
inode->i_size = 0;
err = ext4_mark_inode_dirty(handle, inode);
if (err) {
@ -271,25 +284,17 @@ void ext4_evict_inode(struct inode *inode)
}
}
/*
* ext4_ext_truncate() doesn't reserve any slop when it
* restarts journal transactions; therefore there may not be
* enough credits left in the handle to remove the inode from
* the orphan list and set the dtime field.
*/
if (!ext4_handle_has_enough_credits(handle, 3)) {
err = ext4_journal_extend(handle, 3);
if (err > 0)
err = ext4_journal_restart(handle, 3);
if (err != 0) {
ext4_warning(inode->i_sb,
"couldn't extend journal (err %d)", err);
stop_handle:
ext4_journal_stop(handle);
ext4_orphan_del(NULL, inode);
sb_end_intwrite(inode->i_sb);
goto no_delete;
}
/* Remove xattr references. */
err = ext4_xattr_delete_inode(handle, inode, &ea_inode_array,
extra_credits);
if (err) {
ext4_warning(inode->i_sb, "xattr delete (err %d)", err);
stop_handle:
ext4_journal_stop(handle);
ext4_orphan_del(NULL, inode);
sb_end_intwrite(inode->i_sb);
ext4_xattr_inode_array_free(ea_inode_array);
goto no_delete;
}
/*
@ -317,6 +322,7 @@ void ext4_evict_inode(struct inode *inode)
ext4_free_inode(handle, inode);
ext4_journal_stop(handle);
sb_end_intwrite(inode->i_sb);
ext4_xattr_inode_array_free(ea_inode_array);
return;
no_delete:
ext4_clear_inode(inode); /* We must guarantee clearing of inode... */
@ -710,7 +716,7 @@ out_sem:
if (map->m_flags & EXT4_MAP_NEW &&
!(map->m_flags & EXT4_MAP_UNWRITTEN) &&
!(flags & EXT4_GET_BLOCKS_ZERO) &&
!IS_NOQUOTA(inode) &&
!ext4_is_quota_file(inode) &&
ext4_should_order_data(inode)) {
if (flags & EXT4_GET_BLOCKS_IO_SUBMIT)
ret = ext4_jbd2_inode_add_wait(handle, inode);
@ -4712,7 +4718,7 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
if (ext4_has_feature_64bit(sb))
ei->i_file_acl |=
((__u64)le16_to_cpu(raw_inode->i_file_acl_high)) << 32;
inode->i_size = ext4_isize(raw_inode);
inode->i_size = ext4_isize(sb, raw_inode);
if ((size = i_size_read(inode)) < 0) {
EXT4_ERROR_INODE(inode, "bad i_size value: %lld", size);
ret = -EFSCORRUPTED;
@ -4846,6 +4852,15 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
}
brelse(iloc.bh);
ext4_set_inode_flags(inode);
if (ei->i_flags & EXT4_EA_INODE_FL) {
ext4_xattr_inode_set_class(inode);
inode_lock(inode);
inode->i_flags |= S_NOQUOTA;
inode_unlock(inode);
}
unlock_new_inode(inode);
return inode;
@ -5037,7 +5052,7 @@ static int ext4_do_update_inode(handle_t *handle,
raw_inode->i_file_acl_high =
cpu_to_le16(ei->i_file_acl >> 32);
raw_inode->i_file_acl_lo = cpu_to_le32(ei->i_file_acl);
if (ei->i_disksize != ext4_isize(raw_inode)) {
if (ei->i_disksize != ext4_isize(inode->i_sb, raw_inode)) {
ext4_isize_set(raw_inode, ei->i_disksize);
need_datasync = 1;
}
@ -5287,7 +5302,14 @@ int ext4_setattr(struct dentry *dentry, struct iattr *attr)
error = PTR_ERR(handle);
goto err_out;
}
/* dquot_transfer() calls back ext4_get_inode_usage() which
* counts xattr inode references.
*/
down_read(&EXT4_I(inode)->xattr_sem);
error = dquot_transfer(inode, attr);
up_read(&EXT4_I(inode)->xattr_sem);
if (error) {
ext4_journal_stop(handle);
return error;
@ -5307,6 +5329,14 @@ int ext4_setattr(struct dentry *dentry, struct iattr *attr)
loff_t oldsize = inode->i_size;
int shrink = (attr->ia_size <= inode->i_size);
if (ext4_encrypted_inode(inode)) {
error = fscrypt_get_encryption_info(inode);
if (error)
return error;
if (!fscrypt_has_encryption_key(inode))
return -ENOKEY;
}
if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))) {
struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);

10
fs/ext4/ioctl.c
View file

@ -218,7 +218,7 @@ static int ext4_ioctl_setflags(struct inode *inode,
unsigned int jflag;
/* Is it quota file? Do not allow user to mess with it */
if (IS_NOQUOTA(inode))
if (ext4_is_quota_file(inode))
goto flags_out;
oldflags = ei->i_flags;
@ -342,7 +342,7 @@ static int ext4_ioctl_setproject(struct file *filp, __u32 projid)
err = -EPERM;
inode_lock(inode);
/* Is it quota file? Do not allow user to mess with it */
if (IS_NOQUOTA(inode))
if (ext4_is_quota_file(inode))
goto out_unlock;
err = ext4_get_inode_loc(inode, &iloc);
@ -373,7 +373,13 @@ static int ext4_ioctl_setproject(struct file *filp, __u32 projid)
transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid));
if (!IS_ERR(transfer_to[PRJQUOTA])) {
/* __dquot_transfer() calls back ext4_get_inode_usage() which
* counts xattr inode references.
*/
down_read(&EXT4_I(inode)->xattr_sem);
err = __dquot_transfer(inode, transfer_to);
up_read(&EXT4_I(inode)->xattr_sem);
dqput(transfer_to[PRJQUOTA]);
if (err)
goto out_dirty;

145
fs/ext4/mballoc.c
View file

@ -367,8 +367,6 @@ static void ext4_mb_generate_from_pa(struct super_block *sb, void *bitmap,
ext4_group_t group);
static void ext4_mb_generate_from_freelist(struct super_block *sb, void *bitmap,
ext4_group_t group);
static void ext4_free_data_callback(struct super_block *sb,
struct ext4_journal_cb_entry *jce, int rc);
static inline void *mb_correct_addr_and_bit(int *bit, void *addr)
{
@ -2639,6 +2637,7 @@ int ext4_mb_init(struct super_block *sb)
spin_lock_init(&sbi->s_md_lock);
spin_lock_init(&sbi->s_bal_lock);
sbi->s_mb_free_pending = 0;
INIT_LIST_HEAD(&sbi->s_freed_data_list);
sbi->s_mb_max_to_scan = MB_DEFAULT_MAX_TO_SCAN;
sbi->s_mb_min_to_scan = MB_DEFAULT_MIN_TO_SCAN;
@ -2782,7 +2781,8 @@ int ext4_mb_release(struct super_block *sb)
}
static inline int ext4_issue_discard(struct super_block *sb,
ext4_group_t block_group, ext4_grpblk_t cluster, int count)
ext4_group_t block_group, ext4_grpblk_t cluster, int count,
struct bio **biop)
{
ext4_fsblk_t discard_block;
@ -2791,18 +2791,18 @@ static inline int ext4_issue_discard(struct super_block *sb,
count = EXT4_C2B(EXT4_SB(sb), count);
trace_ext4_discard_blocks(sb,
(unsigned long long) discard_block, count);
return sb_issue_discard(sb, discard_block, count, GFP_NOFS, 0);
if (biop) {
return __blkdev_issue_discard(sb->s_bdev,
(sector_t)discard_block << (sb->s_blocksize_bits - 9),
(sector_t)count << (sb->s_blocksize_bits - 9),
GFP_NOFS, 0, biop);
} else
return sb_issue_discard(sb, discard_block, count, GFP_NOFS, 0);
}
/*
* This function is called by the jbd2 layer once the commit has finished,
* so we know we can free the blocks that were released with that commit.
*/
static void ext4_free_data_callback(struct super_block *sb,
struct ext4_journal_cb_entry *jce,
int rc)
static void ext4_free_data_in_buddy(struct super_block *sb,
struct ext4_free_data *entry)
{
struct ext4_free_data *entry = (struct ext4_free_data *)jce;
struct ext4_buddy e4b;
struct ext4_group_info *db;
int err, count = 0, count2 = 0;
@ -2810,18 +2810,6 @@ static void ext4_free_data_callback(struct super_block *sb,
mb_debug(1, "gonna free %u blocks in group %u (0x%p):",
entry->efd_count, entry->efd_group, entry);
if (test_opt(sb, DISCARD)) {
err = ext4_issue_discard(sb, entry->efd_group,
entry->efd_start_cluster,
entry->efd_count);
if (err && err != -EOPNOTSUPP)
ext4_msg(sb, KERN_WARNING, "discard request in"
" group:%d block:%d count:%d failed"
" with %d", entry->efd_group,
entry->efd_start_cluster,
entry->efd_count, err);
}
err = ext4_mb_load_buddy(sb, entry->efd_group, &e4b);
/* we expect to find existing buddy because it's pinned */
BUG_ON(err != 0);
@ -2862,6 +2850,56 @@ static void ext4_free_data_callback(struct super_block *sb,
mb_debug(1, "freed %u blocks in %u structures\n", count, count2);
}
/*
* This function is called by the jbd2 layer once the commit has finished,
* so we know we can free the blocks that were released with that commit.
*/
void ext4_process_freed_data(struct super_block *sb, tid_t commit_tid)
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
struct ext4_free_data *entry, *tmp;
struct bio *discard_bio = NULL;
struct list_head freed_data_list;
struct list_head *cut_pos = NULL;
int err;
INIT_LIST_HEAD(&freed_data_list);
spin_lock(&sbi->s_md_lock);
list_for_each_entry(entry, &sbi->s_freed_data_list, efd_list) {
if (entry->efd_tid != commit_tid)
break;
cut_pos = &entry->efd_list;
}
if (cut_pos)
list_cut_position(&freed_data_list, &sbi->s_freed_data_list,
cut_pos);
spin_unlock(&sbi->s_md_lock);
if (test_opt(sb, DISCARD)) {
list_for_each_entry(entry, &freed_data_list, efd_list) {
err = ext4_issue_discard(sb, entry->efd_group,
entry->efd_start_cluster,
entry->efd_count,
&discard_bio);
if (err && err != -EOPNOTSUPP) {
ext4_msg(sb, KERN_WARNING, "discard request in"
" group:%d block:%d count:%d failed"
" with %d", entry->efd_group,
entry->efd_start_cluster,
entry->efd_count, err);
} else if (err == -EOPNOTSUPP)
break;
}
if (discard_bio)
submit_bio_wait(discard_bio);
}
list_for_each_entry_safe(entry, tmp, &freed_data_list, efd_list)
ext4_free_data_in_buddy(sb, entry);
}
int __init ext4_init_mballoc(void)
{
ext4_pspace_cachep = KMEM_CACHE(ext4_prealloc_space,
@ -3529,7 +3567,7 @@ void ext4_mb_generate_from_pa(struct super_block *sb, void *bitmap,
ext4_set_bits(bitmap, start, len);
preallocated += len;
}
mb_debug(1, "prellocated %u for group %u\n", preallocated, group);
mb_debug(1, "preallocated %u for group %u\n", preallocated, group);
}
static void ext4_mb_pa_callback(struct rcu_head *head)
@ -4464,7 +4502,7 @@ ext4_fsblk_t ext4_mb_new_blocks(handle_t *handle,
trace_ext4_request_blocks(ar);
/* Allow to use superuser reservation for quota file */
if (IS_NOQUOTA(ar->inode))
if (ext4_is_quota_file(ar->inode))
ar->flags |= EXT4_MB_USE_ROOT_BLOCKS;
if ((ar->flags & EXT4_MB_DELALLOC_RESERVED) == 0) {
@ -4583,14 +4621,28 @@ out:
* are contiguous, AND the extents were freed by the same transaction,
* AND the blocks are associated with the same group.
*/
static int can_merge(struct ext4_free_data *entry1,
struct ext4_free_data *entry2)
static void ext4_try_merge_freed_extent(struct ext4_sb_info *sbi,
struct ext4_free_data *entry,
struct ext4_free_data *new_entry,
struct rb_root *entry_rb_root)
{
if ((entry1->efd_tid == entry2->efd_tid) &&
(entry1->efd_group == entry2->efd_group) &&
((entry1->efd_start_cluster + entry1->efd_count) == entry2->efd_start_cluster))
return 1;
return 0;
if ((entry->efd_tid != new_entry->efd_tid) ||
(entry->efd_group != new_entry->efd_group))
return;
if (entry->efd_start_cluster + entry->efd_count ==
new_entry->efd_start_cluster) {
new_entry->efd_start_cluster = entry->efd_start_cluster;
new_entry->efd_count += entry->efd_count;
} else if (new_entry->efd_start_cluster + new_entry->efd_count ==
entry->efd_start_cluster) {
new_entry->efd_count += entry->efd_count;
} else
return;
spin_lock(&sbi->s_md_lock);
list_del(&entry->efd_list);
spin_unlock(&sbi->s_md_lock);
rb_erase(&entry->efd_node, entry_rb_root);
kmem_cache_free(ext4_free_data_cachep, entry);
}
static noinline_for_stack int
@ -4646,29 +4698,19 @@ ext4_mb_free_metadata(handle_t *handle, struct ext4_buddy *e4b,
node = rb_prev(new_node);
if (node) {
entry = rb_entry(node, struct ext4_free_data, efd_node);
if (can_merge(entry, new_entry) &&
ext4_journal_callback_try_del(handle, &entry->efd_jce)) {
new_entry->efd_start_cluster = entry->efd_start_cluster;
new_entry->efd_count += entry->efd_count;
rb_erase(node, &(db->bb_free_root));
kmem_cache_free(ext4_free_data_cachep, entry);
}
ext4_try_merge_freed_extent(sbi, entry, new_entry,
&(db->bb_free_root));
}
node = rb_next(new_node);
if (node) {
entry = rb_entry(node, struct ext4_free_data, efd_node);
if (can_merge(new_entry, entry) &&
ext4_journal_callback_try_del(handle, &entry->efd_jce)) {
new_entry->efd_count += entry->efd_count;
rb_erase(node, &(db->bb_free_root));
kmem_cache_free(ext4_free_data_cachep, entry);
}
ext4_try_merge_freed_extent(sbi, entry, new_entry,
&(db->bb_free_root));
}
/* Add the extent to transaction's private list */
new_entry->efd_jce.jce_func = ext4_free_data_callback;
spin_lock(&sbi->s_md_lock);
_ext4_journal_callback_add(handle, &new_entry->efd_jce);
list_add_tail(&new_entry->efd_list, &sbi->s_freed_data_list);
sbi->s_mb_free_pending += clusters;
spin_unlock(&sbi->s_md_lock);
return 0;
@ -4871,7 +4913,8 @@ do_more:
* them with group lock_held
*/
if (test_opt(sb, DISCARD)) {
err = ext4_issue_discard(sb, block_group, bit, count);
err = ext4_issue_discard(sb, block_group, bit, count,
NULL);
if (err && err != -EOPNOTSUPP)
ext4_msg(sb, KERN_WARNING, "discard request in"
" group:%d block:%d count:%lu failed"
@ -5094,7 +5137,7 @@ __acquires(bitlock)
*/
mb_mark_used(e4b, &ex);
ext4_unlock_group(sb, group);
ret = ext4_issue_discard(sb, group, start, count);
ret = ext4_issue_discard(sb, group, start, count, NULL);
ext4_lock_group(sb, group);
mb_free_blocks(NULL, e4b, start, ex.fe_len);
return ret;

6
fs/ext4/mballoc.h
View file

@ -78,10 +78,8 @@ do { \
struct ext4_free_data {
/* MUST be the first member */
struct ext4_journal_cb_entry efd_jce;
/* ext4_free_data private data starts from here */
/* this links the free block information from sb_info */
struct list_head efd_list;
/* this links the free block information from group_info */
struct rb_node efd_node;

2
fs/ext4/migrate.c
View file

@ -475,7 +475,7 @@ int ext4_ext_migrate(struct inode *inode)
owner[0] = i_uid_read(inode);
owner[1] = i_gid_read(inode);
tmp_inode = ext4_new_inode(handle, d_inode(inode->i_sb->s_root),
S_IFREG, NULL, goal, owner);
S_IFREG, NULL, goal, owner, 0);
if (IS_ERR(tmp_inode)) {
retval = PTR_ERR(tmp_inode);
ext4_journal_stop(handle);

2
fs/ext4/move_extent.c
View file

@ -484,7 +484,7 @@ mext_check_arguments(struct inode *orig_inode,
return -EBUSY;
}
if (IS_NOQUOTA(orig_inode) || IS_NOQUOTA(donor_inode)) {
if (ext4_is_quota_file(orig_inode) && ext4_is_quota_file(donor_inode)) {
ext4_debug("ext4 move extent: The argument files should "
"not be quota files [ino:orig %lu, donor %lu]\n",
orig_inode->i_ino, donor_inode->i_ino);

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