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ext4: make ext4_set_iomap() recognize IOMAP_DELALLOC map type

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Since ext4_map_blocks() can recognize a delayed allocated only extent,
make ext4_set_iomap() can also recognize it, and remove the useless
separate check in ext4_iomap_begin_report().

Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20240127015825.1608160-7-yi.zhang@huaweicloud.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Zhang Yi 2024-01-27 09:58:05 +08:00 committed by Theodore Ts'o
parent 874eaba96d
commit ec9d669eba
1 changed files with 3 additions and 29 deletions
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32
fs/ext4/inode.c
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@ -3262,6 +3262,9 @@ static void ext4_set_iomap(struct inode *inode, struct iomap *iomap,
iomap->addr = (u64) map->m_pblk << blkbits;
if (flags & IOMAP_DAX)
iomap->addr += EXT4_SB(inode->i_sb)->s_dax_part_off;
} else if (map->m_flags & EXT4_MAP_DELAYED) {
iomap->type = IOMAP_DELALLOC;
iomap->addr = IOMAP_NULL_ADDR;
} else {
iomap->type = IOMAP_HOLE;
iomap->addr = IOMAP_NULL_ADDR;
@ -3424,35 +3427,11 @@ const struct iomap_ops ext4_iomap_overwrite_ops = {
.iomap_end = ext4_iomap_end,
};
static bool ext4_iomap_is_delalloc(struct inode *inode,
struct ext4_map_blocks *map)
{
struct extent_status es;
ext4_lblk_t offset = 0, end = map->m_lblk + map->m_len - 1;
ext4_es_find_extent_range(inode, &ext4_es_is_delayed,
map->m_lblk, end, &es);
if (!es.es_len || es.es_lblk > end)
return false;
if (es.es_lblk > map->m_lblk) {
map->m_len = es.es_lblk - map->m_lblk;
return false;
}
offset = map->m_lblk - es.es_lblk;
map->m_len = es.es_len - offset;
return true;
}
static int ext4_iomap_begin_report(struct inode *inode, loff_t offset,
loff_t length, unsigned int flags,
struct iomap *iomap, struct iomap *srcmap)
{
int ret;
bool delalloc = false;
struct ext4_map_blocks map;
u8 blkbits = inode->i_blkbits;
@ -3493,13 +3472,8 @@ static int ext4_iomap_begin_report(struct inode *inode, loff_t offset,
ret = ext4_map_blocks(NULL, inode, &map, 0);
if (ret < 0)
return ret;
if (ret == 0)
delalloc = ext4_iomap_is_delalloc(inode, &map);
set_iomap:
ext4_set_iomap(inode, iomap, &map, offset, length, flags);
if (delalloc && iomap->type == IOMAP_HOLE)
iomap->type = IOMAP_DELALLOC;
return 0;
}