mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-25 05:04:09 +08:00
f2fs: use extent_cache by default
We don't need to handle the duplicate extent information. The integrated rule is: - update on-disk extent with largest one tracked by in-memory extent_cache - destroy extent_tree for the truncation case - drop per-inode extent_cache by shrinker Reviewed-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim
parent
7daaea256d
commit
3e72f72139
357
fs/f2fs/data.c
357
fs/f2fs/data.c
@ -266,103 +266,6 @@ int f2fs_reserve_block(struct dnode_of_data *dn, pgoff_t index)
|
||||
return err;
|
||||
}
|
||||
|
||||
static bool lookup_extent_info(struct inode *inode, pgoff_t pgofs,
|
||||
struct extent_info *ei)
|
||||
{
|
||||
struct f2fs_inode_info *fi = F2FS_I(inode);
|
||||
pgoff_t start_fofs, end_fofs;
|
||||
block_t start_blkaddr;
|
||||
|
||||
read_lock(&fi->ext_lock);
|
||||
if (fi->ext.len == 0) {
|
||||
read_unlock(&fi->ext_lock);
|
||||
return false;
|
||||
}
|
||||
|
||||
stat_inc_total_hit(inode->i_sb);
|
||||
|
||||
start_fofs = fi->ext.fofs;
|
||||
end_fofs = fi->ext.fofs + fi->ext.len - 1;
|
||||
start_blkaddr = fi->ext.blk;
|
||||
|
||||
if (pgofs >= start_fofs && pgofs <= end_fofs) {
|
||||
*ei = fi->ext;
|
||||
stat_inc_read_hit(inode->i_sb);
|
||||
read_unlock(&fi->ext_lock);
|
||||
return true;
|
||||
}
|
||||
read_unlock(&fi->ext_lock);
|
||||
return false;
|
||||
}
|
||||
|
||||
static bool update_extent_info(struct inode *inode, pgoff_t fofs,
|
||||
block_t blkaddr)
|
||||
{
|
||||
struct f2fs_inode_info *fi = F2FS_I(inode);
|
||||
pgoff_t start_fofs, end_fofs;
|
||||
block_t start_blkaddr, end_blkaddr;
|
||||
int need_update = true;
|
||||
|
||||
write_lock(&fi->ext_lock);
|
||||
|
||||
start_fofs = fi->ext.fofs;
|
||||
end_fofs = fi->ext.fofs + fi->ext.len - 1;
|
||||
start_blkaddr = fi->ext.blk;
|
||||
end_blkaddr = fi->ext.blk + fi->ext.len - 1;
|
||||
|
||||
/* Drop and initialize the matched extent */
|
||||
if (fi->ext.len == 1 && fofs == start_fofs)
|
||||
fi->ext.len = 0;
|
||||
|
||||
/* Initial extent */
|
||||
if (fi->ext.len == 0) {
|
||||
if (blkaddr != NULL_ADDR) {
|
||||
fi->ext.fofs = fofs;
|
||||
fi->ext.blk = blkaddr;
|
||||
fi->ext.len = 1;
|
||||
}
|
||||
goto end_update;
|
||||
}
|
||||
|
||||
/* Front merge */
|
||||
if (fofs == start_fofs - 1 && blkaddr == start_blkaddr - 1) {
|
||||
fi->ext.fofs--;
|
||||
fi->ext.blk--;
|
||||
fi->ext.len++;
|
||||
goto end_update;
|
||||
}
|
||||
|
||||
/* Back merge */
|
||||
if (fofs == end_fofs + 1 && blkaddr == end_blkaddr + 1) {
|
||||
fi->ext.len++;
|
||||
goto end_update;
|
||||
}
|
||||
|
||||
/* Split the existing extent */
|
||||
if (fi->ext.len > 1 &&
|
||||
fofs >= start_fofs && fofs <= end_fofs) {
|
||||
if ((end_fofs - fofs) < (fi->ext.len >> 1)) {
|
||||
fi->ext.len = fofs - start_fofs;
|
||||
} else {
|
||||
fi->ext.fofs = fofs + 1;
|
||||
fi->ext.blk = start_blkaddr + fofs - start_fofs + 1;
|
||||
fi->ext.len -= fofs - start_fofs + 1;
|
||||
}
|
||||
} else {
|
||||
need_update = false;
|
||||
}
|
||||
|
||||
/* Finally, if the extent is very fragmented, let's drop the cache. */
|
||||
if (fi->ext.len < F2FS_MIN_EXTENT_LEN) {
|
||||
fi->ext.len = 0;
|
||||
set_inode_flag(fi, FI_NO_EXTENT);
|
||||
need_update = true;
|
||||
}
|
||||
end_update:
|
||||
write_unlock(&fi->ext_lock);
|
||||
return need_update;
|
||||
}
|
||||
|
||||
static struct extent_node *__attach_extent_node(struct f2fs_sb_info *sbi,
|
||||
struct extent_tree *et, struct extent_info *ei,
|
||||
struct rb_node *parent, struct rb_node **p)
|
||||
@ -394,23 +297,6 @@ static void __detach_extent_node(struct f2fs_sb_info *sbi,
|
||||
et->cached_en = NULL;
|
||||
}
|
||||
|
||||
static struct extent_tree *__find_extent_tree(struct f2fs_sb_info *sbi,
|
||||
nid_t ino)
|
||||
{
|
||||
struct extent_tree *et;
|
||||
|
||||
down_read(&sbi->extent_tree_lock);
|
||||
et = radix_tree_lookup(&sbi->extent_tree_root, ino);
|
||||
if (!et) {
|
||||
up_read(&sbi->extent_tree_lock);
|
||||
return NULL;
|
||||
}
|
||||
atomic_inc(&et->refcount);
|
||||
up_read(&sbi->extent_tree_lock);
|
||||
|
||||
return et;
|
||||
}
|
||||
|
||||
static struct extent_tree *__grab_extent_tree(struct inode *inode)
|
||||
{
|
||||
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
||||
@ -434,6 +320,9 @@ static struct extent_tree *__grab_extent_tree(struct inode *inode)
|
||||
atomic_inc(&et->refcount);
|
||||
up_write(&sbi->extent_tree_lock);
|
||||
|
||||
/* never died untill evict_inode */
|
||||
F2FS_I(inode)->extent_tree = et;
|
||||
|
||||
return et;
|
||||
}
|
||||
|
||||
@ -522,7 +411,7 @@ static struct extent_node *__insert_extent_tree(struct f2fs_sb_info *sbi,
|
||||
en->ei.blk = ei->blk;
|
||||
en->ei.len += ei->len;
|
||||
*den = __try_back_merge(sbi, et, en);
|
||||
return en;
|
||||
goto update_out;
|
||||
}
|
||||
p = &(*p)->rb_left;
|
||||
} else if (ei->fofs >= en->ei.fofs + en->ei.len) {
|
||||
@ -530,7 +419,7 @@ static struct extent_node *__insert_extent_tree(struct f2fs_sb_info *sbi,
|
||||
f2fs_bug_on(sbi, !den);
|
||||
en->ei.len += ei->len;
|
||||
*den = __try_front_merge(sbi, et, en);
|
||||
return en;
|
||||
goto update_out;
|
||||
}
|
||||
p = &(*p)->rb_right;
|
||||
} else {
|
||||
@ -538,7 +427,14 @@ static struct extent_node *__insert_extent_tree(struct f2fs_sb_info *sbi,
|
||||
}
|
||||
}
|
||||
|
||||
return __attach_extent_node(sbi, et, ei, parent, p);
|
||||
en = __attach_extent_node(sbi, et, ei, parent, p);
|
||||
if (!en)
|
||||
return NULL;
|
||||
update_out:
|
||||
if (en->ei.len > et->largest.len)
|
||||
et->largest = en->ei;
|
||||
et->cached_en = en;
|
||||
return en;
|
||||
}
|
||||
|
||||
static unsigned int __free_extent_tree(struct f2fs_sb_info *sbi,
|
||||
@ -570,51 +466,56 @@ static unsigned int __free_extent_tree(struct f2fs_sb_info *sbi,
|
||||
return count - et->count;
|
||||
}
|
||||
|
||||
static void f2fs_init_extent_tree(struct inode *inode,
|
||||
struct f2fs_extent *i_ext)
|
||||
static void __drop_largest_extent(struct inode *inode, pgoff_t fofs)
|
||||
{
|
||||
struct extent_info *largest = &F2FS_I(inode)->extent_tree->largest;
|
||||
|
||||
if (largest->fofs <= fofs && largest->fofs + largest->len > fofs)
|
||||
largest->len = 0;
|
||||
}
|
||||
|
||||
void f2fs_init_extent_tree(struct inode *inode, struct f2fs_extent *i_ext)
|
||||
{
|
||||
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
||||
struct extent_tree *et;
|
||||
struct extent_node *en;
|
||||
struct extent_info ei;
|
||||
|
||||
if (le32_to_cpu(i_ext->len) < F2FS_MIN_EXTENT_LEN)
|
||||
if (!f2fs_may_extent_tree(inode))
|
||||
return;
|
||||
|
||||
et = __grab_extent_tree(inode);
|
||||
|
||||
if (!i_ext || le32_to_cpu(i_ext->len) < F2FS_MIN_EXTENT_LEN)
|
||||
return;
|
||||
|
||||
set_extent_info(&ei, le32_to_cpu(i_ext->fofs),
|
||||
le32_to_cpu(i_ext->blk), le32_to_cpu(i_ext->len));
|
||||
|
||||
write_lock(&et->lock);
|
||||
if (et->count)
|
||||
goto out;
|
||||
|
||||
set_extent_info(&ei, le32_to_cpu(i_ext->fofs),
|
||||
le32_to_cpu(i_ext->blk), le32_to_cpu(i_ext->len));
|
||||
|
||||
en = __insert_extent_tree(sbi, et, &ei, NULL);
|
||||
if (en) {
|
||||
et->cached_en = en;
|
||||
|
||||
spin_lock(&sbi->extent_lock);
|
||||
list_add_tail(&en->list, &sbi->extent_list);
|
||||
spin_unlock(&sbi->extent_lock);
|
||||
}
|
||||
out:
|
||||
write_unlock(&et->lock);
|
||||
atomic_dec(&et->refcount);
|
||||
}
|
||||
|
||||
static bool f2fs_lookup_extent_tree(struct inode *inode, pgoff_t pgofs,
|
||||
struct extent_info *ei)
|
||||
{
|
||||
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
||||
struct extent_tree *et;
|
||||
struct extent_tree *et = F2FS_I(inode)->extent_tree;
|
||||
struct extent_node *en;
|
||||
|
||||
trace_f2fs_lookup_extent_tree_start(inode, pgofs);
|
||||
f2fs_bug_on(sbi, !et);
|
||||
|
||||
et = __find_extent_tree(sbi, inode->i_ino);
|
||||
if (!et)
|
||||
return false;
|
||||
trace_f2fs_lookup_extent_tree_start(inode, pgofs);
|
||||
|
||||
read_lock(&et->lock);
|
||||
en = __lookup_extent_tree(et, pgofs);
|
||||
@ -631,27 +532,38 @@ static bool f2fs_lookup_extent_tree(struct inode *inode, pgoff_t pgofs,
|
||||
read_unlock(&et->lock);
|
||||
|
||||
trace_f2fs_lookup_extent_tree_end(inode, pgofs, en);
|
||||
|
||||
atomic_dec(&et->refcount);
|
||||
return en ? true : false;
|
||||
}
|
||||
|
||||
static void f2fs_update_extent_tree(struct inode *inode, pgoff_t fofs,
|
||||
/* return true, if on-disk extent should be updated */
|
||||
static bool f2fs_update_extent_tree(struct inode *inode, pgoff_t fofs,
|
||||
block_t blkaddr)
|
||||
{
|
||||
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
||||
struct extent_tree *et;
|
||||
struct extent_tree *et = F2FS_I(inode)->extent_tree;
|
||||
struct extent_node *en = NULL, *en1 = NULL, *en2 = NULL, *en3 = NULL;
|
||||
struct extent_node *den = NULL;
|
||||
struct extent_info ei, dei;
|
||||
struct extent_info ei, dei, prev;
|
||||
unsigned int endofs;
|
||||
|
||||
if (!et)
|
||||
return false;
|
||||
|
||||
trace_f2fs_update_extent_tree(inode, fofs, blkaddr);
|
||||
|
||||
et = __grab_extent_tree(inode);
|
||||
|
||||
write_lock(&et->lock);
|
||||
|
||||
if (is_inode_flag_set(F2FS_I(inode), FI_NO_EXTENT)) {
|
||||
write_unlock(&et->lock);
|
||||
return false;
|
||||
}
|
||||
|
||||
prev = et->largest;
|
||||
dei.len = 0;
|
||||
|
||||
/* we do not guarantee that the largest extent is cached all the time */
|
||||
__drop_largest_extent(inode, fofs);
|
||||
|
||||
/* 1. lookup and remove existing extent info in cache */
|
||||
en = __lookup_extent_tree(et, fofs);
|
||||
if (!en)
|
||||
@ -683,6 +595,14 @@ update_extent:
|
||||
if (blkaddr) {
|
||||
set_extent_info(&ei, fofs, blkaddr, 1);
|
||||
en3 = __insert_extent_tree(sbi, et, &ei, &den);
|
||||
|
||||
/* give up extent_cache, if split and small updates happen */
|
||||
if (dei.len >= 1 &&
|
||||
prev.len < F2FS_MIN_EXTENT_LEN &&
|
||||
et->largest.len < F2FS_MIN_EXTENT_LEN) {
|
||||
et->largest.len = 0;
|
||||
set_inode_flag(F2FS_I(inode), FI_NO_EXTENT);
|
||||
}
|
||||
}
|
||||
|
||||
/* 4. update in global extent list */
|
||||
@ -714,57 +634,12 @@ update_extent:
|
||||
if (den)
|
||||
kmem_cache_free(extent_node_slab, den);
|
||||
|
||||
if (is_inode_flag_set(F2FS_I(inode), FI_NO_EXTENT))
|
||||
__free_extent_tree(sbi, et, true);
|
||||
|
||||
write_unlock(&et->lock);
|
||||
atomic_dec(&et->refcount);
|
||||
}
|
||||
|
||||
void f2fs_preserve_extent_tree(struct inode *inode)
|
||||
{
|
||||
struct extent_tree *et;
|
||||
struct extent_info *ext = &F2FS_I(inode)->ext;
|
||||
bool sync = false;
|
||||
|
||||
if (!test_opt(F2FS_I_SB(inode), EXTENT_CACHE))
|
||||
return;
|
||||
|
||||
et = __find_extent_tree(F2FS_I_SB(inode), inode->i_ino);
|
||||
if (!et) {
|
||||
if (ext->len) {
|
||||
ext->len = 0;
|
||||
update_inode_page(inode);
|
||||
}
|
||||
return;
|
||||
}
|
||||
|
||||
read_lock(&et->lock);
|
||||
if (et->count) {
|
||||
struct extent_node *en;
|
||||
|
||||
if (et->cached_en) {
|
||||
en = et->cached_en;
|
||||
} else {
|
||||
struct rb_node *node = rb_first(&et->root);
|
||||
|
||||
if (!node)
|
||||
node = rb_last(&et->root);
|
||||
en = rb_entry(node, struct extent_node, rb_node);
|
||||
}
|
||||
|
||||
if (__is_extent_same(ext, &en->ei))
|
||||
goto out;
|
||||
|
||||
*ext = en->ei;
|
||||
sync = true;
|
||||
} else if (ext->len) {
|
||||
ext->len = 0;
|
||||
sync = true;
|
||||
}
|
||||
out:
|
||||
read_unlock(&et->lock);
|
||||
atomic_dec(&et->refcount);
|
||||
|
||||
if (sync)
|
||||
update_inode_page(inode);
|
||||
return !__is_extent_same(&prev, &et->largest);
|
||||
}
|
||||
|
||||
unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *sbi, int nr_shrink)
|
||||
@ -772,8 +647,7 @@ unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *sbi, int nr_shrink)
|
||||
struct extent_tree *treevec[EXT_TREE_VEC_SIZE];
|
||||
struct extent_node *en, *tmp;
|
||||
unsigned long ino = F2FS_ROOT_INO(sbi);
|
||||
struct radix_tree_iter iter;
|
||||
void **slot;
|
||||
struct radix_tree_root *root = &sbi->extent_tree_root;
|
||||
unsigned int found;
|
||||
unsigned int node_cnt = 0, tree_cnt = 0;
|
||||
|
||||
@ -788,10 +662,10 @@ unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *sbi, int nr_shrink)
|
||||
}
|
||||
spin_unlock(&sbi->extent_lock);
|
||||
|
||||
if (!down_read_trylock(&sbi->extent_tree_lock))
|
||||
if (!down_write_trylock(&sbi->extent_tree_lock))
|
||||
goto out;
|
||||
|
||||
while ((found = radix_tree_gang_lookup(&sbi->extent_tree_root,
|
||||
while ((found = radix_tree_gang_lookup(root,
|
||||
(void **)treevec, ino, EXT_TREE_VEC_SIZE))) {
|
||||
unsigned i;
|
||||
|
||||
@ -799,27 +673,15 @@ unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *sbi, int nr_shrink)
|
||||
for (i = 0; i < found; i++) {
|
||||
struct extent_tree *et = treevec[i];
|
||||
|
||||
atomic_inc(&et->refcount);
|
||||
write_lock(&et->lock);
|
||||
node_cnt += __free_extent_tree(sbi, et, false);
|
||||
write_unlock(&et->lock);
|
||||
atomic_dec(&et->refcount);
|
||||
}
|
||||
}
|
||||
up_read(&sbi->extent_tree_lock);
|
||||
|
||||
if (!down_write_trylock(&sbi->extent_tree_lock))
|
||||
goto out;
|
||||
|
||||
radix_tree_for_each_slot(slot, &sbi->extent_tree_root, &iter,
|
||||
F2FS_ROOT_INO(sbi)) {
|
||||
struct extent_tree *et = (struct extent_tree *)*slot;
|
||||
|
||||
if (!atomic_read(&et->refcount) && !et->count) {
|
||||
radix_tree_delete(&sbi->extent_tree_root, et->ino);
|
||||
kmem_cache_free(extent_tree_slab, et);
|
||||
sbi->total_ext_tree--;
|
||||
tree_cnt++;
|
||||
if (!atomic_read(&et->refcount) && !et->count) {
|
||||
radix_tree_delete(root, et->ino);
|
||||
kmem_cache_free(extent_tree_slab, et);
|
||||
sbi->total_ext_tree--;
|
||||
tree_cnt++;
|
||||
}
|
||||
}
|
||||
}
|
||||
up_write(&sbi->extent_tree_lock);
|
||||
@ -829,63 +691,61 @@ out:
|
||||
return node_cnt + tree_cnt;
|
||||
}
|
||||
|
||||
void f2fs_destroy_extent_tree(struct inode *inode)
|
||||
unsigned int f2fs_destroy_extent_node(struct inode *inode)
|
||||
{
|
||||
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
||||
struct extent_tree *et;
|
||||
struct extent_tree *et = F2FS_I(inode)->extent_tree;
|
||||
unsigned int node_cnt = 0;
|
||||
|
||||
if (!test_opt(sbi, EXTENT_CACHE))
|
||||
return;
|
||||
|
||||
et = __find_extent_tree(sbi, inode->i_ino);
|
||||
if (!et)
|
||||
goto out;
|
||||
return 0;
|
||||
|
||||
/* free all extent info belong to this extent tree */
|
||||
write_lock(&et->lock);
|
||||
node_cnt = __free_extent_tree(sbi, et, true);
|
||||
write_unlock(&et->lock);
|
||||
|
||||
atomic_dec(&et->refcount);
|
||||
return node_cnt;
|
||||
}
|
||||
|
||||
/* try to find and delete extent tree entry in radix tree */
|
||||
down_write(&sbi->extent_tree_lock);
|
||||
et = radix_tree_lookup(&sbi->extent_tree_root, inode->i_ino);
|
||||
if (!et) {
|
||||
up_write(&sbi->extent_tree_lock);
|
||||
goto out;
|
||||
void f2fs_destroy_extent_tree(struct inode *inode)
|
||||
{
|
||||
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
||||
struct extent_tree *et = F2FS_I(inode)->extent_tree;
|
||||
unsigned int node_cnt = 0;
|
||||
|
||||
if (!et)
|
||||
return;
|
||||
|
||||
if (inode->i_nlink && !is_bad_inode(inode) && et->count) {
|
||||
atomic_dec(&et->refcount);
|
||||
return;
|
||||
}
|
||||
|
||||
/* free all extent info belong to this extent tree */
|
||||
node_cnt = f2fs_destroy_extent_node(inode);
|
||||
|
||||
/* delete extent tree entry in radix tree */
|
||||
down_write(&sbi->extent_tree_lock);
|
||||
atomic_dec(&et->refcount);
|
||||
f2fs_bug_on(sbi, atomic_read(&et->refcount) || et->count);
|
||||
radix_tree_delete(&sbi->extent_tree_root, inode->i_ino);
|
||||
kmem_cache_free(extent_tree_slab, et);
|
||||
sbi->total_ext_tree--;
|
||||
up_write(&sbi->extent_tree_lock);
|
||||
out:
|
||||
|
||||
F2FS_I(inode)->extent_tree = NULL;
|
||||
|
||||
trace_f2fs_destroy_extent_tree(inode, node_cnt);
|
||||
return;
|
||||
}
|
||||
|
||||
void f2fs_init_extent_cache(struct inode *inode, struct f2fs_extent *i_ext)
|
||||
{
|
||||
if (test_opt(F2FS_I_SB(inode), EXTENT_CACHE))
|
||||
f2fs_init_extent_tree(inode, i_ext);
|
||||
|
||||
write_lock(&F2FS_I(inode)->ext_lock);
|
||||
get_extent_info(&F2FS_I(inode)->ext, *i_ext);
|
||||
write_unlock(&F2FS_I(inode)->ext_lock);
|
||||
}
|
||||
|
||||
static bool f2fs_lookup_extent_cache(struct inode *inode, pgoff_t pgofs,
|
||||
struct extent_info *ei)
|
||||
{
|
||||
if (is_inode_flag_set(F2FS_I(inode), FI_NO_EXTENT))
|
||||
if (!f2fs_may_extent_tree(inode))
|
||||
return false;
|
||||
|
||||
if (test_opt(F2FS_I_SB(inode), EXTENT_CACHE))
|
||||
return f2fs_lookup_extent_tree(inode, pgofs, ei);
|
||||
|
||||
return lookup_extent_info(inode, pgofs, ei);
|
||||
return f2fs_lookup_extent_tree(inode, pgofs, ei);
|
||||
}
|
||||
|
||||
void f2fs_update_extent_cache(struct dnode_of_data *dn)
|
||||
@ -893,19 +753,15 @@ void f2fs_update_extent_cache(struct dnode_of_data *dn)
|
||||
struct f2fs_inode_info *fi = F2FS_I(dn->inode);
|
||||
pgoff_t fofs;
|
||||
|
||||
f2fs_bug_on(F2FS_I_SB(dn->inode), dn->data_blkaddr == NEW_ADDR);
|
||||
|
||||
if (is_inode_flag_set(fi, FI_NO_EXTENT))
|
||||
if (!f2fs_may_extent_tree(dn->inode))
|
||||
return;
|
||||
|
||||
f2fs_bug_on(F2FS_I_SB(dn->inode), dn->data_blkaddr == NEW_ADDR);
|
||||
|
||||
fofs = start_bidx_of_node(ofs_of_node(dn->node_page), fi) +
|
||||
dn->ofs_in_node;
|
||||
|
||||
/* we should call update_extent_info() to update on-disk extent */
|
||||
if (test_opt(F2FS_I_SB(dn->inode), EXTENT_CACHE))
|
||||
f2fs_update_extent_tree(dn->inode, fofs, dn->data_blkaddr);
|
||||
|
||||
if (update_extent_info(dn->inode, fofs, dn->data_blkaddr))
|
||||
if (f2fs_update_extent_tree(dn->inode, fofs, dn->data_blkaddr))
|
||||
sync_inode_page(dn);
|
||||
}
|
||||
|
||||
@ -1109,8 +965,6 @@ alloc:
|
||||
|
||||
allocate_data_block(sbi, NULL, dn->data_blkaddr, &dn->data_blkaddr,
|
||||
&sum, seg);
|
||||
|
||||
/* direct IO doesn't use extent cache to maximize the performance */
|
||||
set_data_blkaddr(dn);
|
||||
|
||||
/* update i_size */
|
||||
@ -1119,6 +973,9 @@ alloc:
|
||||
if (i_size_read(dn->inode) < ((fofs + 1) << PAGE_CACHE_SHIFT))
|
||||
i_size_write(dn->inode, ((fofs + 1) << PAGE_CACHE_SHIFT));
|
||||
|
||||
/* direct IO doesn't use extent cache to maximize the performance */
|
||||
__drop_largest_extent(dn->inode, fofs);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
@ -349,6 +349,7 @@ struct extent_tree {
|
||||
nid_t ino; /* inode number */
|
||||
struct rb_root root; /* root of extent info rb-tree */
|
||||
struct extent_node *cached_en; /* recently accessed extent node */
|
||||
struct extent_info largest; /* largested extent info */
|
||||
rwlock_t lock; /* protect extent info rb-tree */
|
||||
atomic_t refcount; /* reference count of rb-tree */
|
||||
unsigned int count; /* # of extent node in rb-tree*/
|
||||
@ -420,14 +421,14 @@ struct f2fs_inode_info {
|
||||
unsigned int clevel; /* maximum level of given file name */
|
||||
nid_t i_xattr_nid; /* node id that contains xattrs */
|
||||
unsigned long long xattr_ver; /* cp version of xattr modification */
|
||||
struct extent_info ext; /* in-memory extent cache entry */
|
||||
rwlock_t ext_lock; /* rwlock for single extent cache */
|
||||
struct inode_entry *dirty_dir; /* the pointer of dirty dir */
|
||||
|
||||
struct radix_tree_root inmem_root; /* radix tree for inmem pages */
|
||||
struct list_head inmem_pages; /* inmemory pages managed by f2fs */
|
||||
struct mutex inmem_lock; /* lock for inmemory pages */
|
||||
|
||||
struct extent_tree *extent_tree; /* cached extent_tree entry */
|
||||
|
||||
#ifdef CONFIG_F2FS_FS_ENCRYPTION
|
||||
/* Encryption params */
|
||||
struct f2fs_crypt_info *i_crypt_info;
|
||||
@ -1548,6 +1549,17 @@ static inline bool is_dot_dotdot(const struct qstr *str)
|
||||
return false;
|
||||
}
|
||||
|
||||
static inline bool f2fs_may_extent_tree(struct inode *inode)
|
||||
{
|
||||
mode_t mode = inode->i_mode;
|
||||
|
||||
if (!test_opt(F2FS_I_SB(inode), EXTENT_CACHE) ||
|
||||
is_inode_flag_set(F2FS_I(inode), FI_NO_EXTENT))
|
||||
return false;
|
||||
|
||||
return S_ISREG(mode);
|
||||
}
|
||||
|
||||
#define get_inode_mode(i) \
|
||||
((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
|
||||
(F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
|
||||
@ -1755,10 +1767,10 @@ void set_data_blkaddr(struct dnode_of_data *);
|
||||
int reserve_new_block(struct dnode_of_data *);
|
||||
int f2fs_reserve_block(struct dnode_of_data *, pgoff_t);
|
||||
unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *, int);
|
||||
void f2fs_init_extent_tree(struct inode *, struct f2fs_extent *);
|
||||
unsigned int f2fs_destroy_extent_node(struct inode *);
|
||||
void f2fs_destroy_extent_tree(struct inode *);
|
||||
void f2fs_init_extent_cache(struct inode *, struct f2fs_extent *);
|
||||
void f2fs_update_extent_cache(struct dnode_of_data *);
|
||||
void f2fs_preserve_extent_tree(struct inode *);
|
||||
struct page *get_read_data_page(struct inode *, pgoff_t, int);
|
||||
struct page *find_data_page(struct inode *, pgoff_t);
|
||||
struct page *get_lock_data_page(struct inode *, pgoff_t);
|
||||
|
||||
@ -139,7 +139,7 @@ static int do_read_inode(struct inode *inode)
|
||||
fi->i_pino = le32_to_cpu(ri->i_pino);
|
||||
fi->i_dir_level = ri->i_dir_level;
|
||||
|
||||
f2fs_init_extent_cache(inode, &ri->i_ext);
|
||||
f2fs_init_extent_tree(inode, &ri->i_ext);
|
||||
|
||||
get_inline_info(fi, ri);
|
||||
|
||||
@ -237,10 +237,11 @@ void update_inode(struct inode *inode, struct page *node_page)
|
||||
ri->i_size = cpu_to_le64(i_size_read(inode));
|
||||
ri->i_blocks = cpu_to_le64(inode->i_blocks);
|
||||
|
||||
read_lock(&F2FS_I(inode)->ext_lock);
|
||||
set_raw_extent(&F2FS_I(inode)->ext, &ri->i_ext);
|
||||
read_unlock(&F2FS_I(inode)->ext_lock);
|
||||
|
||||
if (F2FS_I(inode)->extent_tree)
|
||||
set_raw_extent(&F2FS_I(inode)->extent_tree->largest,
|
||||
&ri->i_ext);
|
||||
else
|
||||
memset(&ri->i_ext, 0, sizeof(ri->i_ext));
|
||||
set_raw_inline(F2FS_I(inode), ri);
|
||||
|
||||
ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
|
||||
@ -331,6 +332,8 @@ void f2fs_evict_inode(struct inode *inode)
|
||||
f2fs_bug_on(sbi, get_dirty_pages(inode));
|
||||
remove_dirty_dir_inode(inode);
|
||||
|
||||
f2fs_destroy_extent_tree(inode);
|
||||
|
||||
if (inode->i_nlink || is_bad_inode(inode))
|
||||
goto no_delete;
|
||||
|
||||
@ -350,11 +353,6 @@ no_delete:
|
||||
stat_dec_inline_dir(inode);
|
||||
stat_dec_inline_inode(inode);
|
||||
|
||||
/* update extent info in inode */
|
||||
if (inode->i_nlink)
|
||||
f2fs_preserve_extent_tree(inode);
|
||||
f2fs_destroy_extent_tree(inode);
|
||||
|
||||
invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino, inode->i_ino);
|
||||
if (xnid)
|
||||
invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid);
|
||||
|
||||
@ -65,6 +65,8 @@ static struct inode *f2fs_new_inode(struct inode *dir, umode_t mode)
|
||||
if (f2fs_may_inline_dentry(inode))
|
||||
set_inode_flag(F2FS_I(inode), FI_INLINE_DENTRY);
|
||||
|
||||
f2fs_init_extent_tree(inode, NULL);
|
||||
|
||||
stat_inc_inline_inode(inode);
|
||||
stat_inc_inline_dir(inode);
|
||||
|
||||
|
||||
@ -117,6 +117,8 @@ void f2fs_join_shrinker(struct f2fs_sb_info *sbi)
|
||||
|
||||
void f2fs_leave_shrinker(struct f2fs_sb_info *sbi)
|
||||
{
|
||||
f2fs_shrink_extent_tree(sbi, __count_extent_cache(sbi));
|
||||
|
||||
spin_lock(&f2fs_list_lock);
|
||||
list_del(&sbi->s_list);
|
||||
spin_unlock(&f2fs_list_lock);
|
||||
|
||||
@ -422,7 +422,6 @@ static struct inode *f2fs_alloc_inode(struct super_block *sb)
|
||||
atomic_set(&fi->dirty_pages, 0);
|
||||
fi->i_current_depth = 1;
|
||||
fi->i_advise = 0;
|
||||
rwlock_init(&fi->ext_lock);
|
||||
init_rwsem(&fi->i_sem);
|
||||
INIT_RADIX_TREE(&fi->inmem_root, GFP_NOFS);
|
||||
INIT_LIST_HEAD(&fi->inmem_pages);
|
||||
@ -453,12 +452,17 @@ static int f2fs_drop_inode(struct inode *inode)
|
||||
*/
|
||||
if (!inode_unhashed(inode) && inode->i_state & I_SYNC) {
|
||||
if (!inode->i_nlink && !is_bad_inode(inode)) {
|
||||
/* to avoid evict_inode call simultaneously */
|
||||
atomic_inc(&inode->i_count);
|
||||
spin_unlock(&inode->i_lock);
|
||||
|
||||
/* some remained atomic pages should discarded */
|
||||
if (f2fs_is_atomic_file(inode))
|
||||
commit_inmem_pages(inode, true);
|
||||
|
||||
/* should remain fi->extent_tree for writepage */
|
||||
f2fs_destroy_extent_node(inode);
|
||||
|
||||
sb_start_intwrite(inode->i_sb);
|
||||
i_size_write(inode, 0);
|
||||
|
||||
@ -473,6 +477,7 @@ static int f2fs_drop_inode(struct inode *inode)
|
||||
F2FS_I(inode)->i_crypt_info);
|
||||
#endif
|
||||
spin_lock(&inode->i_lock);
|
||||
atomic_dec(&inode->i_count);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
@ -721,6 +726,7 @@ static void default_options(struct f2fs_sb_info *sbi)
|
||||
|
||||
set_opt(sbi, BG_GC);
|
||||
set_opt(sbi, INLINE_DATA);
|
||||
set_opt(sbi, EXTENT_CACHE);
|
||||
|
||||
#ifdef CONFIG_F2FS_FS_XATTR
|
||||
set_opt(sbi, XATTR_USER);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user