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btrfs: directly pass the inode to btrfs_is_data_extent_shared()

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Currently we pass a root and an inode number as arguments for
btrfs_is_data_extent_shared() and the inode number is always from an
inode that belongs to that root (it wouldn't make sense otherwise).
In every context that we call btrfs_is_data_extent_shared() (fiemap only),
we have an inode available, so directly pass the inode to the function
instead of a root and inode number. This reduces the number of parameters
and it makes the function's signature conform to most other functions we
have.

Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Filipe Manana 2022-10-11 13:17:01 +01:00 committed by David Sterba
parent a0a5472ad8
commit ceb707da9a
3 changed files with 12 additions and 14 deletions
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8
fs/btrfs/backref.c
View File

@ -1658,8 +1658,7 @@ static void store_backref_shared_cache(struct btrfs_backref_shared_cache *cache,
/*
* Check if a data extent is shared or not.
*
* @root: The root the inode belongs to.
* @inum: Number of the inode whose extent we are checking.
* @inode: The inode whose extent we are checking.
* @bytenr: Logical bytenr of the extent we are checking.
* @extent_gen: Generation of the extent (file extent item) or 0 if it is
* not known.
@ -1678,11 +1677,12 @@ static void store_backref_shared_cache(struct btrfs_backref_shared_cache *cache,
*
* Return: 0 if extent is not shared, 1 if it is shared, < 0 on error.
*/
int btrfs_is_data_extent_shared(struct btrfs_root *root, u64 inum, u64 bytenr,
int btrfs_is_data_extent_shared(struct btrfs_inode *inode, u64 bytenr,
u64 extent_gen,
struct ulist *roots, struct ulist *tmp,
struct btrfs_backref_shared_cache *cache)
{
struct btrfs_root *root = inode->root;
struct btrfs_fs_info *fs_info = root->fs_info;
struct btrfs_trans_handle *trans;
struct ulist_iterator uiter;
@ -1691,7 +1691,7 @@ int btrfs_is_data_extent_shared(struct btrfs_root *root, u64 inum, u64 bytenr,
int ret = 0;
struct share_check shared = {
.root_objectid = root->root_key.objectid,
.inum = inum,
.inum = btrfs_ino(inode),
.share_count = 0,
.have_delayed_delete_refs = false,
};

2
fs/btrfs/backref.h
View File

@ -77,7 +77,7 @@ int btrfs_find_one_extref(struct btrfs_root *root, u64 inode_objectid,
u64 start_off, struct btrfs_path *path,
struct btrfs_inode_extref **ret_extref,
u64 *found_off);
int btrfs_is_data_extent_shared(struct btrfs_root *root, u64 inum, u64 bytenr,
int btrfs_is_data_extent_shared(struct btrfs_inode *inode, u64 bytenr,
u64 extent_gen,
struct ulist *roots, struct ulist *tmp,
struct btrfs_backref_shared_cache *cache);

16
fs/btrfs/extent_io.c
View File

@ -3712,7 +3712,6 @@ static int fiemap_process_hole(struct btrfs_inode *inode,
u64 start, u64 end)
{
const u64 i_size = i_size_read(&inode->vfs_inode);
const u64 ino = btrfs_ino(inode);
u64 cur_offset = start;
u64 last_delalloc_end = 0;
u32 prealloc_flags = FIEMAP_EXTENT_UNWRITTEN;
@ -3752,8 +3751,8 @@ static int fiemap_process_hole(struct btrfs_inode *inode,
if (prealloc_len > 0) {
if (!checked_extent_shared && fieinfo->fi_extents_max) {
ret = btrfs_is_data_extent_shared(inode->root,
ino, disk_bytenr,
ret = btrfs_is_data_extent_shared(inode,
disk_bytenr,
extent_gen, roots,
tmp_ulist,
backref_cache);
@ -3802,8 +3801,8 @@ static int fiemap_process_hole(struct btrfs_inode *inode,
}
if (!checked_extent_shared && fieinfo->fi_extents_max) {
ret = btrfs_is_data_extent_shared(inode->root,
ino, disk_bytenr,
ret = btrfs_is_data_extent_shared(inode,
disk_bytenr,
extent_gen, roots,
tmp_ulist,
backref_cache);
@ -3904,7 +3903,6 @@ int extent_fiemap(struct btrfs_inode *inode, struct fiemap_extent_info *fieinfo,
const u64 ino = btrfs_ino(inode);
struct extent_state *cached_state = NULL;
struct btrfs_path *path;
struct btrfs_root *root = inode->root;
struct fiemap_cache cache = { 0 };
struct btrfs_backref_shared_cache *backref_cache;
struct ulist *roots;
@ -3925,8 +3923,8 @@ int extent_fiemap(struct btrfs_inode *inode, struct fiemap_extent_info *fieinfo,
goto out;
}
lockstart = round_down(start, root->fs_info->sectorsize);
lockend = round_up(start + len, root->fs_info->sectorsize);
lockstart = round_down(start, inode->root->fs_info->sectorsize);
lockend = round_up(start + len, inode->root->fs_info->sectorsize);
prev_extent_end = lockstart;
lock_extent(&inode->io_tree, lockstart, lockend, &cached_state);
@ -4034,7 +4032,7 @@ int extent_fiemap(struct btrfs_inode *inode, struct fiemap_extent_info *fieinfo,
} else {
/* We have a regular extent. */
if (fieinfo->fi_extents_max) {
ret = btrfs_is_data_extent_shared(root, ino,
ret = btrfs_is_data_extent_shared(inode,
disk_bytenr,
extent_gen,
roots,