If all free_nat_bitmap are available, we can rebuild nat_bits from
free_nat_bitmap entirely during umount, let's make another chance
to reenable nat_bits for image.
Signed-off-by: Chao Yu <yuch...@huawei.com>
---
fs/f2fs/checkpoint.c | 10 +++++---
fs/f2fs/f2fs.h | 4 +--
fs/f2fs/node.c | 60 +++++++++++++++++++++++++++++++++++++++++---
3 files changed, 66 insertions(+), 8 deletions(-)
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index 623536b8e0c0..b9a95b9dd573 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -1227,10 +1227,14 @@ static void update_ckpt_flags(struct f2fs_sb_info *sbi,
struct cp_control *cpc)
spin_lock_irqsave(&sbi->cp_lock, flags);
- if ((cpc->reason & CP_UMOUNT) &&
- le32_to_cpu(ckpt->cp_pack_total_block_count) >
+ if (cpc->reason & CP_UMOUNT) {
+ if (le32_to_cpu(ckpt->cp_pack_total_block_count) >
sbi->blocks_per_seg - NM_I(sbi)->nat_bits_blocks)
- disable_nat_bits(sbi, false);
+ disable_nat_bits(sbi, false);
+ else if (!is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG) &&
+ f2fs_nat_bitmap_enabled(sbi))
+ f2fs_enable_nat_bits(sbi);
+ }
if (cpc->reason & CP_TRIMMED)
__set_ckpt_flags(ckpt, CP_TRIMMED_FLAG);
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 7cec897146a3..d00473f917a7 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -1631,8 +1631,6 @@ static inline void disable_nat_bits(struct f2fs_sb_info
*sbi, bool lock)
if (lock)
spin_lock_irqsave(&sbi->cp_lock, flags);
__clear_ckpt_flags(F2FS_CKPT(sbi), CP_NAT_BITS_FLAG);
- kfree(NM_I(sbi)->nat_bits);
- NM_I(sbi)->nat_bits = NULL;
if (lock)
spin_unlock_irqrestore(&sbi->cp_lock, flags);
}
@@ -2952,6 +2950,7 @@ int f2fs_truncate_inode_blocks(struct inode *inode,
pgoff_t from);
int f2fs_truncate_xattr_node(struct inode *inode);
int f2fs_wait_on_node_pages_writeback(struct f2fs_sb_info *sbi,
unsigned int seq_id);
+bool f2fs_nat_bitmap_enabled(struct f2fs_sb_info *sbi);
int f2fs_remove_inode_page(struct inode *inode);
struct page *f2fs_new_inode_page(struct inode *inode);
struct page *f2fs_new_node_page(struct dnode_of_data *dn, unsigned int ofs);
@@ -2975,6 +2974,7 @@ int f2fs_recover_xattr_data(struct inode *inode, struct
page *page);
int f2fs_recover_inode_page(struct f2fs_sb_info *sbi, struct page *page);
int f2fs_restore_node_summary(struct f2fs_sb_info *sbi,
unsigned int segno, struct f2fs_summary_block *sum);
+void f2fs_enable_nat_bits(struct f2fs_sb_info *sbi);
int f2fs_flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc);
int f2fs_build_node_manager(struct f2fs_sb_info *sbi);
void f2fs_destroy_node_manager(struct f2fs_sb_info *sbi);
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 30a4427aaa94..5a4db4d6bf2e 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -2036,6 +2036,24 @@ static void __move_free_nid(struct f2fs_sb_info *sbi,
struct free_nid *i,
}
}
+bool f2fs_nat_bitmap_enabled(struct f2fs_sb_info *sbi)
+{
+ struct f2fs_nm_info *nm_i = NM_I(sbi);
+ unsigned int i;
+ bool ret = true;
+
+ down_read(&nm_i->nat_tree_lock);
+ for (i = 0; i < nm_i->nat_blocks; i++) {
+ if (!test_bit_le(i, nm_i->nat_block_bitmap)) {
+ ret = false;
+ break;
+ }
+ }
+ up_read(&nm_i->nat_tree_lock);
+
+ return ret;
+}
+
static void update_free_nid_bitmap(struct f2fs_sb_info *sbi, nid_t nid,
bool set, bool build)
{
@@ -2720,6 +2738,42 @@ static void __update_nat_bits(struct f2fs_sb_info *sbi,
nid_t start_nid,
__clear_bit_le(nat_index, nm_i->full_nat_bits);
}
+void f2fs_enable_nat_bits(struct f2fs_sb_info *sbi)
+{
+ struct f2fs_nm_info *nm_i = NM_I(sbi);
+ int valid = 0;
+ int nat_ofs, nid_ofs = 0;
+
+ down_read(&nm_i->nat_tree_lock);
+
+ for (nat_ofs = 0, nid_ofs = 0; nat_ofs < nm_i->nat_blocks; nat_ofs++) {
+ if (nat_ofs == 0) {
+ valid = 1;
+ nid_ofs = 1;
+ }
+
+ for (; nid_ofs < NAT_ENTRY_PER_BLOCK; nid_ofs++) {
+ if (!test_bit_le(nid_ofs,
+ nm_i->free_nid_bitmap[nat_ofs]))
+ valid++;
+ }
+
+ if (valid == 0) {
+ __set_bit_le(nat_ofs, nm_i->empty_nat_bits);
+ __clear_bit_le(nat_ofs, nm_i->full_nat_bits);
+ continue;
+ }
+
+ __clear_bit_le(nat_ofs, nm_i->empty_nat_bits);
+ if (valid == NAT_ENTRY_PER_BLOCK)
+ __set_bit_le(nat_ofs, nm_i->full_nat_bits);
+ else
+ __clear_bit_le(nat_ofs, nm_i->full_nat_bits);
+ }
+
+ up_read(&nm_i->nat_tree_lock);
+}
+
static int __flush_nat_entry_set(struct f2fs_sb_info *sbi,
struct nat_entry_set *set, struct cp_control *cpc)
{
@@ -2862,15 +2916,15 @@ static int __get_nat_bitmaps(struct f2fs_sb_info *sbi)
__u64 cp_ver = cur_cp_version(ckpt);
block_t nat_bits_addr;
- if (!enabled_nat_bits(sbi, NULL))
- return 0;
-
nm_i->nat_bits_blocks = F2FS_BLK_ALIGN((nat_bits_bytes << 1) + 8);
nm_i->nat_bits = f2fs_kzalloc(sbi,
nm_i->nat_bits_blocks << F2FS_BLKSIZE_BITS, GFP_KERNEL);
if (!nm_i->nat_bits)
return -ENOMEM;
+ if (!enabled_nat_bits(sbi, NULL))
+ return 0;
+
nat_bits_addr = __start_cp_addr(sbi) + sbi->blocks_per_seg -
nm_i->nat_bits_blocks;
for (i = 0; i < nm_i->nat_bits_blocks; i++) {
--
2.18.0.rc1
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