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btrfs: drop redundant forward declaration in props.c 

Drop forward declaration of the functions:

- prop_compression_validate
- prop_compression_apply
- prop_compression_extract

No functional changes.

Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Anand Jain 2019-03-01 12:34:48 +08:00 committed by David Sterba
parent 7715da84f7
commit 3dcf96c7b9
1 changed files with 82 additions and 87 deletions
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169
fs/btrfs/props.c
View File

@ -23,36 +23,6 @@ struct prop_handler {
int inheritable;
};
static int prop_compression_validate(const char *value, size_t len);
static int prop_compression_apply(struct inode *inode,
const char *value,
size_t len);
static const char *prop_compression_extract(struct inode *inode);
static struct prop_handler prop_handlers[] = {
{
.xattr_name = XATTR_BTRFS_PREFIX "compression",
.validate = prop_compression_validate,
.apply = prop_compression_apply,
.extract = prop_compression_extract,
.inheritable = 1
},
};
void __init btrfs_props_init(void)
{
int i;
hash_init(prop_handlers_ht);
for (i = 0; i < ARRAY_SIZE(prop_handlers); i++) {
struct prop_handler *p = &prop_handlers[i];
u64 h = btrfs_name_hash(p->xattr_name, strlen(p->xattr_name));
hash_add(prop_handlers_ht, &p->node, h);
}
}
static const struct hlist_head *find_prop_handlers_by_hash(const u64 hash)
{
struct hlist_head *h;
@ -271,6 +241,78 @@ int btrfs_load_inode_props(struct inode *inode, struct btrfs_path *path)
return ret;
}
static int prop_compression_validate(const char *value, size_t len)
{
if (!value)
return 0;
if (!strncmp("lzo", value, 3))
return 0;
else if (!strncmp("zlib", value, 4))
return 0;
else if (!strncmp("zstd", value, 4))
return 0;
return -EINVAL;
}
static int prop_compression_apply(struct inode *inode, const char *value,
size_t len)
{
struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
int type;
if (len == 0) {
BTRFS_I(inode)->flags |= BTRFS_INODE_NOCOMPRESS;
BTRFS_I(inode)->flags &= ~BTRFS_INODE_COMPRESS;
BTRFS_I(inode)->prop_compress = BTRFS_COMPRESS_NONE;
return 0;
}
if (!strncmp("lzo", value, 3)) {
type = BTRFS_COMPRESS_LZO;
btrfs_set_fs_incompat(fs_info, COMPRESS_LZO);
} else if (!strncmp("zlib", value, 4)) {
type = BTRFS_COMPRESS_ZLIB;
} else if (!strncmp("zstd", value, 4)) {
type = BTRFS_COMPRESS_ZSTD;
btrfs_set_fs_incompat(fs_info, COMPRESS_ZSTD);
} else {
return -EINVAL;
}
BTRFS_I(inode)->flags &= ~BTRFS_INODE_NOCOMPRESS;
BTRFS_I(inode)->flags |= BTRFS_INODE_COMPRESS;
BTRFS_I(inode)->prop_compress = type;
return 0;
}
static const char *prop_compression_extract(struct inode *inode)
{
switch (BTRFS_I(inode)->prop_compress) {
case BTRFS_COMPRESS_ZLIB:
case BTRFS_COMPRESS_LZO:
case BTRFS_COMPRESS_ZSTD:
return btrfs_compress_type2str(BTRFS_I(inode)->prop_compress);
default:
break;
}
return NULL;
}
static struct prop_handler prop_handlers[] = {
{
.xattr_name = XATTR_BTRFS_PREFIX "compression",
.validate = prop_compression_validate,
.apply = prop_compression_apply,
.extract = prop_compression_extract,
.inheritable = 1
},
};
static int inherit_props(struct btrfs_trans_handle *trans,
struct inode *inode,
struct inode *parent)
@ -352,64 +394,17 @@ int btrfs_subvol_inherit_props(struct btrfs_trans_handle *trans,
return ret;
}
static int prop_compression_validate(const char *value, size_t len)
void __init btrfs_props_init(void)
{
if (!strncmp("lzo", value, 3))
return 0;
else if (!strncmp("zlib", value, 4))
return 0;
else if (!strncmp("zstd", value, 4))
return 0;
int i;
return -EINVAL;
hash_init(prop_handlers_ht);
for (i = 0; i < ARRAY_SIZE(prop_handlers); i++) {
struct prop_handler *p = &prop_handlers[i];
u64 h = btrfs_name_hash(p->xattr_name, strlen(p->xattr_name));
hash_add(prop_handlers_ht, &p->node, h);
}
}
static int prop_compression_apply(struct inode *inode,
const char *value,
size_t len)
{
struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
int type;
if (len == 0) {
BTRFS_I(inode)->flags |= BTRFS_INODE_NOCOMPRESS;
BTRFS_I(inode)->flags &= ~BTRFS_INODE_COMPRESS;
BTRFS_I(inode)->prop_compress = BTRFS_COMPRESS_NONE;
return 0;
}
if (!strncmp("lzo", value, 3)) {
type = BTRFS_COMPRESS_LZO;
btrfs_set_fs_incompat(fs_info, COMPRESS_LZO);
} else if (!strncmp("zlib", value, 4)) {
type = BTRFS_COMPRESS_ZLIB;
} else if (!strncmp("zstd", value, 4)) {
type = BTRFS_COMPRESS_ZSTD;
btrfs_set_fs_incompat(fs_info, COMPRESS_ZSTD);
} else {
return -EINVAL;
}
BTRFS_I(inode)->flags &= ~BTRFS_INODE_NOCOMPRESS;
BTRFS_I(inode)->flags |= BTRFS_INODE_COMPRESS;
BTRFS_I(inode)->prop_compress = type;
return 0;
}
static const char *prop_compression_extract(struct inode *inode)
{
switch (BTRFS_I(inode)->prop_compress) {
case BTRFS_COMPRESS_ZLIB:
case BTRFS_COMPRESS_LZO:
case BTRFS_COMPRESS_ZSTD:
return btrfs_compress_type2str(BTRFS_I(inode)->prop_compress);
default:
break;
}
return NULL;
}