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-rw-r--r--fs/ext4/dir.c50
-rw-r--r--fs/ext4/ext4.h6
-rw-r--r--fs/ext4/inline.c15
-rw-r--r--fs/ext4/inode.c29
-rw-r--r--fs/ext4/verity.c8
5 files changed, 57 insertions, 51 deletions
diff --git a/fs/ext4/dir.c b/fs/ext4/dir.c
index b8b6b06015cd..ef6a3c8f3a9a 100644
--- a/fs/ext4/dir.c
+++ b/fs/ext4/dir.c
@@ -133,6 +133,7 @@ static int ext4_readdir(struct file *file, struct dir_context *ctx)
struct super_block *sb = inode->i_sb;
struct buffer_head *bh = NULL;
struct fscrypt_str fstr = FSTR_INIT(NULL, 0);
+ struct dir_private_info *info = file->private_data;
err = fscrypt_prepare_readdir(inode);
if (err)
@@ -229,7 +230,7 @@ static int ext4_readdir(struct file *file, struct dir_context *ctx)
* readdir(2), then we might be pointing to an invalid
* dirent right now. Scan from the start of the block
* to make sure. */
- if (!inode_eq_iversion(inode, file->f_version)) {
+ if (!inode_eq_iversion(inode, info->cookie)) {
for (i = 0; i < sb->s_blocksize && i < offset; ) {
de = (struct ext4_dir_entry_2 *)
(bh->b_data + i);
@@ -249,7 +250,7 @@ static int ext4_readdir(struct file *file, struct dir_context *ctx)
offset = i;
ctx->pos = (ctx->pos & ~(sb->s_blocksize - 1))
| offset;
- file->f_version = inode_query_iversion(inode);
+ info->cookie = inode_query_iversion(inode);
}
while (ctx->pos < inode->i_size
@@ -392,6 +393,7 @@ static inline loff_t ext4_get_htree_eof(struct file *filp)
static loff_t ext4_dir_llseek(struct file *file, loff_t offset, int whence)
{
struct inode *inode = file->f_mapping->host;
+ struct dir_private_info *info = file->private_data;
int dx_dir = is_dx_dir(inode);
loff_t ret, htree_max = ext4_get_htree_eof(file);
@@ -400,7 +402,7 @@ static loff_t ext4_dir_llseek(struct file *file, loff_t offset, int whence)
htree_max, htree_max);
else
ret = ext4_llseek(file, offset, whence);
- file->f_version = inode_peek_iversion(inode) - 1;
+ info->cookie = inode_peek_iversion(inode) - 1;
return ret;
}
@@ -437,18 +439,15 @@ static void free_rb_tree_fname(struct rb_root *root)
*root = RB_ROOT;
}
-
-static struct dir_private_info *ext4_htree_create_dir_info(struct file *filp,
- loff_t pos)
+static void ext4_htree_init_dir_info(struct file *filp, loff_t pos)
{
- struct dir_private_info *p;
-
- p = kzalloc(sizeof(*p), GFP_KERNEL);
- if (!p)
- return NULL;
- p->curr_hash = pos2maj_hash(filp, pos);
- p->curr_minor_hash = pos2min_hash(filp, pos);
- return p;
+ struct dir_private_info *p = filp->private_data;
+
+ if (is_dx_dir(file_inode(filp)) && !p->initialized) {
+ p->curr_hash = pos2maj_hash(filp, pos);
+ p->curr_minor_hash = pos2min_hash(filp, pos);
+ p->initialized = true;
+ }
}
void ext4_htree_free_dir_info(struct dir_private_info *p)
@@ -560,12 +559,7 @@ static int ext4_dx_readdir(struct file *file, struct dir_context *ctx)
struct fname *fname;
int ret = 0;
- if (!info) {
- info = ext4_htree_create_dir_info(file, ctx->pos);
- if (!info)
- return -ENOMEM;
- file->private_data = info;
- }
+ ext4_htree_init_dir_info(file, ctx->pos);
if (ctx->pos == ext4_get_htree_eof(file))
return 0; /* EOF */
@@ -598,10 +592,10 @@ static int ext4_dx_readdir(struct file *file, struct dir_context *ctx)
* cached entries.
*/
if ((!info->curr_node) ||
- !inode_eq_iversion(inode, file->f_version)) {
+ !inode_eq_iversion(inode, info->cookie)) {
info->curr_node = NULL;
free_rb_tree_fname(&info->root);
- file->f_version = inode_query_iversion(inode);
+ info->cookie = inode_query_iversion(inode);
ret = ext4_htree_fill_tree(file, info->curr_hash,
info->curr_minor_hash,
&info->next_hash);
@@ -672,7 +666,19 @@ int ext4_check_all_de(struct inode *dir, struct buffer_head *bh, void *buf,
return 0;
}
+static int ext4_dir_open(struct inode *inode, struct file *file)
+{
+ struct dir_private_info *info;
+
+ info = kzalloc(sizeof(*info), GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
+ file->private_data = info;
+ return 0;
+}
+
const struct file_operations ext4_dir_operations = {
+ .open = ext4_dir_open,
.llseek = ext4_dir_llseek,
.read = generic_read_dir,
.iterate_shared = ext4_readdir,
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 8cc15d00e5c8..44b0d418143c 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -2554,6 +2554,8 @@ struct dir_private_info {
__u32 curr_hash;
__u32 curr_minor_hash;
__u32 next_hash;
+ u64 cookie;
+ bool initialized;
};
/* calculate the first block number of the group */
@@ -3564,13 +3566,13 @@ int ext4_readpage_inline(struct inode *inode, struct folio *folio);
extern int ext4_try_to_write_inline_data(struct address_space *mapping,
struct inode *inode,
loff_t pos, unsigned len,
- struct page **pagep);
+ struct folio **foliop);
int ext4_write_inline_data_end(struct inode *inode, loff_t pos, unsigned len,
unsigned copied, struct folio *folio);
extern int ext4_da_write_inline_data_begin(struct address_space *mapping,
struct inode *inode,
loff_t pos, unsigned len,
- struct page **pagep,
+ struct folio **foliop,
void **fsdata);
extern int ext4_try_add_inline_entry(handle_t *handle,
struct ext4_filename *fname,
diff --git a/fs/ext4/inline.c b/fs/ext4/inline.c
index 7ca4aca53162..3536ca7e4fcc 100644
--- a/fs/ext4/inline.c
+++ b/fs/ext4/inline.c
@@ -661,7 +661,7 @@ out_nofolio:
int ext4_try_to_write_inline_data(struct address_space *mapping,
struct inode *inode,
loff_t pos, unsigned len,
- struct page **pagep)
+ struct folio **foliop)
{
int ret;
handle_t *handle;
@@ -709,7 +709,7 @@ int ext4_try_to_write_inline_data(struct address_space *mapping,
goto out;
}
- *pagep = &folio->page;
+ *foliop = folio;
down_read(&EXT4_I(inode)->xattr_sem);
if (!ext4_has_inline_data(inode)) {
ret = 0;
@@ -892,7 +892,7 @@ out:
int ext4_da_write_inline_data_begin(struct address_space *mapping,
struct inode *inode,
loff_t pos, unsigned len,
- struct page **pagep,
+ struct folio **foliop,
void **fsdata)
{
int ret;
@@ -955,7 +955,7 @@ retry_journal:
goto out_release_page;
up_read(&EXT4_I(inode)->xattr_sem);
- *pagep = &folio->page;
+ *foliop = folio;
brelse(iloc.bh);
return 1;
out_release_page:
@@ -1461,6 +1461,7 @@ int ext4_read_inline_dir(struct file *file,
struct ext4_iloc iloc;
void *dir_buf = NULL;
int dotdot_offset, dotdot_size, extra_offset, extra_size;
+ struct dir_private_info *info = file->private_data;
ret = ext4_get_inode_loc(inode, &iloc);
if (ret)
@@ -1504,12 +1505,12 @@ int ext4_read_inline_dir(struct file *file,
extra_size = extra_offset + inline_size;
/*
- * If the version has changed since the last call to
+ * If the cookie has changed since the last call to
* readdir(2), then we might be pointing to an invalid
* dirent right now. Scan from the start of the inline
* dir to make sure.
*/
- if (!inode_eq_iversion(inode, file->f_version)) {
+ if (!inode_eq_iversion(inode, info->cookie)) {
for (i = 0; i < extra_size && i < offset;) {
/*
* "." is with offset 0 and
@@ -1541,7 +1542,7 @@ int ext4_read_inline_dir(struct file *file,
}
offset = i;
ctx->pos = offset;
- file->f_version = inode_query_iversion(inode);
+ info->cookie = inode_query_iversion(inode);
}
while (ctx->pos < extra_size) {
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 7475deef9793..54bdd4884fe6 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -1132,7 +1132,7 @@ int ext4_block_write_begin(handle_t *handle, struct folio *folio,
*/
static int ext4_write_begin(struct file *file, struct address_space *mapping,
loff_t pos, unsigned len,
- struct page **pagep, void **fsdata)
+ struct folio **foliop, void **fsdata)
{
struct inode *inode = mapping->host;
int ret, needed_blocks;
@@ -1157,7 +1157,7 @@ static int ext4_write_begin(struct file *file, struct address_space *mapping,
if (ext4_test_inode_state(inode, EXT4_STATE_MAY_INLINE_DATA)) {
ret = ext4_try_to_write_inline_data(mapping, inode, pos, len,
- pagep);
+ foliop);
if (ret < 0)
return ret;
if (ret == 1)
@@ -1250,7 +1250,7 @@ retry_journal:
folio_put(folio);
return ret;
}
- *pagep = &folio->page;
+ *foliop = folio;
return ret;
}
@@ -1278,9 +1278,8 @@ static int write_end_fn(handle_t *handle, struct inode *inode,
static int ext4_write_end(struct file *file,
struct address_space *mapping,
loff_t pos, unsigned len, unsigned copied,
- struct page *page, void *fsdata)
+ struct folio *folio, void *fsdata)
{
- struct folio *folio = page_folio(page);
handle_t *handle = ext4_journal_current_handle();
struct inode *inode = mapping->host;
loff_t old_size = inode->i_size;
@@ -1295,7 +1294,7 @@ static int ext4_write_end(struct file *file,
return ext4_write_inline_data_end(inode, pos, len, copied,
folio);
- copied = block_write_end(file, mapping, pos, len, copied, page, fsdata);
+ copied = block_write_end(file, mapping, pos, len, copied, folio, fsdata);
/*
* it's important to update i_size while still holding folio lock:
* page writeout could otherwise come in and zero beyond i_size.
@@ -1382,9 +1381,8 @@ static void ext4_journalled_zero_new_buffers(handle_t *handle,
static int ext4_journalled_write_end(struct file *file,
struct address_space *mapping,
loff_t pos, unsigned len, unsigned copied,
- struct page *page, void *fsdata)
+ struct folio *folio, void *fsdata)
{
- struct folio *folio = page_folio(page);
handle_t *handle = ext4_journal_current_handle();
struct inode *inode = mapping->host;
loff_t old_size = inode->i_size;
@@ -2899,7 +2897,7 @@ static int ext4_nonda_switch(struct super_block *sb)
static int ext4_da_write_begin(struct file *file, struct address_space *mapping,
loff_t pos, unsigned len,
- struct page **pagep, void **fsdata)
+ struct folio **foliop, void **fsdata)
{
int ret, retries = 0;
struct folio *folio;
@@ -2914,14 +2912,14 @@ static int ext4_da_write_begin(struct file *file, struct address_space *mapping,
if (ext4_nonda_switch(inode->i_sb) || ext4_verity_in_progress(inode)) {
*fsdata = (void *)FALL_BACK_TO_NONDELALLOC;
return ext4_write_begin(file, mapping, pos,
- len, pagep, fsdata);
+ len, foliop, fsdata);
}
*fsdata = (void *)0;
trace_ext4_da_write_begin(inode, pos, len);
if (ext4_test_inode_state(inode, EXT4_STATE_MAY_INLINE_DATA)) {
ret = ext4_da_write_inline_data_begin(mapping, inode, pos, len,
- pagep, fsdata);
+ foliop, fsdata);
if (ret < 0)
return ret;
if (ret == 1)
@@ -2953,7 +2951,7 @@ retry:
return ret;
}
- *pagep = &folio->page;
+ *foliop = folio;
return ret;
}
@@ -2999,7 +2997,7 @@ static int ext4_da_do_write_end(struct address_space *mapping,
* flag, which all that's needed to trigger page writeback.
*/
copied = block_write_end(NULL, mapping, pos, len, copied,
- &folio->page, NULL);
+ folio, NULL);
new_i_size = pos + copied;
/*
@@ -3050,15 +3048,14 @@ static int ext4_da_do_write_end(struct address_space *mapping,
static int ext4_da_write_end(struct file *file,
struct address_space *mapping,
loff_t pos, unsigned len, unsigned copied,
- struct page *page, void *fsdata)
+ struct folio *folio, void *fsdata)
{
struct inode *inode = mapping->host;
int write_mode = (int)(unsigned long)fsdata;
- struct folio *folio = page_folio(page);
if (write_mode == FALL_BACK_TO_NONDELALLOC)
return ext4_write_end(file, mapping, pos,
- len, copied, &folio->page, fsdata);
+ len, copied, folio, fsdata);
trace_ext4_da_write_end(inode, pos, len, copied);
diff --git a/fs/ext4/verity.c b/fs/ext4/verity.c
index 2f37e1ea3955..d9203228ce97 100644
--- a/fs/ext4/verity.c
+++ b/fs/ext4/verity.c
@@ -76,17 +76,17 @@ static int pagecache_write(struct inode *inode, const void *buf, size_t count,
while (count) {
size_t n = min_t(size_t, count,
PAGE_SIZE - offset_in_page(pos));
- struct page *page;
+ struct folio *folio;
void *fsdata = NULL;
int res;
- res = aops->write_begin(NULL, mapping, pos, n, &page, &fsdata);
+ res = aops->write_begin(NULL, mapping, pos, n, &folio, &fsdata);
if (res)
return res;
- memcpy_to_page(page, offset_in_page(pos), buf, n);
+ memcpy_to_folio(folio, offset_in_folio(folio, pos), buf, n);
- res = aops->write_end(NULL, mapping, pos, n, n, page, fsdata);
+ res = aops->write_end(NULL, mapping, pos, n, n, folio, fsdata);
if (res < 0)
return res;
if (res != n)
generated by cgit v1.2.3 (git 2.25.1) at 2025-07-11 12:02:37 +0000