Change page->mapping handling in ecryptfs
Signed-off-by: KAMEZAWA Hiroyuki <[email protected]>
---
fs/ecryptfs/crypto.c | 9 ++++-----
fs/ecryptfs/mmap.c | 14 +++++++-------
2 files changed, 11 insertions(+), 12 deletions(-)
Index: test-2.6.23-rc4-mm1/fs/ecryptfs/crypto.c
===================================================================
--- test-2.6.23-rc4-mm1.orig/fs/ecryptfs/crypto.c
+++ test-2.6.23-rc4-mm1/fs/ecryptfs/crypto.c
@@ -504,8 +504,8 @@ int ecryptfs_encrypt_page(struct ecryptf
#define ECRYPTFS_PAGE_STATE_WRITTEN 3
int page_state;
- lower_inode = ecryptfs_inode_to_lower(ctx->page->mapping->host);
- inode_info = ecryptfs_inode_to_private(ctx->page->mapping->host);
+ lower_inode = ecryptfs_inode_to_lower(page_inode(ctx->page));
+ inode_info = ecryptfs_inode_to_private(page_inode(ctx->page));
crypt_stat = &inode_info->crypt_stat;
if (!(crypt_stat->flags & ECRYPTFS_ENCRYPTED)) {
rc = ecryptfs_copy_page_to_lower(ctx->page, lower_inode,
@@ -636,9 +636,8 @@ int ecryptfs_decrypt_page(struct file *f
int num_extents_per_page;
int page_state;
- crypt_stat = &(ecryptfs_inode_to_private(
- page->mapping->host)->crypt_stat);
- lower_inode = ecryptfs_inode_to_lower(page->mapping->host);
+ crypt_stat = &(ecryptfs_inode_to_private(page_inode(page))->crypt_stat);
+ lower_inode = ecryptfs_inode_to_lower(page_inode(page));
if (!(crypt_stat->flags & ECRYPTFS_ENCRYPTED)) {
rc = ecryptfs_do_readpage(file, page, page->index);
if (rc)
Index: test-2.6.23-rc4-mm1/fs/ecryptfs/mmap.c
===================================================================
--- test-2.6.23-rc4-mm1.orig/fs/ecryptfs/mmap.c
+++ test-2.6.23-rc4-mm1/fs/ecryptfs/mmap.c
@@ -363,7 +363,7 @@ out:
*/
static int fill_zeros_to_end_of_page(struct page *page, unsigned int to)
{
- struct inode *inode = page->mapping->host;
+ struct inode *inode = page_inode(page);
int end_byte_in_page;
if ((i_size_read(inode) / PAGE_CACHE_SIZE) != page->index)
@@ -411,7 +411,7 @@ static int ecryptfs_prepare_write(struct
if (page->index != 0) {
loff_t end_of_prev_pg_pos = page_offset(page) - 1;
- if (end_of_prev_pg_pos > i_size_read(page->mapping->host)) {
+ if (end_of_prev_pg_pos > i_size_read(page_inode(page))) {
rc = ecryptfs_truncate(file->f_path.dentry,
end_of_prev_pg_pos);
if (rc) {
@@ -421,7 +421,7 @@ static int ecryptfs_prepare_write(struct
goto out;
}
}
- if (end_of_prev_pg_pos + 1 > i_size_read(page->mapping->host))
+ if (end_of_prev_pg_pos + 1 > i_size_read(page_inode(page)))
zero_user_page(page, 0, PAGE_CACHE_SIZE, KM_USER0);
}
out:
@@ -683,7 +683,7 @@ static int ecryptfs_commit_write(struct
struct ecryptfs_crypt_stat *crypt_stat;
int rc;
- inode = page->mapping->host;
+ inode = page_inode(page);
lower_inode = ecryptfs_inode_to_lower(inode);
lower_file = ecryptfs_file_to_lower(file);
mutex_lock(&lower_inode->i_mutex);
@@ -805,7 +805,7 @@ static void ecryptfs_sync_page(struct pa
struct inode *lower_inode;
struct page *lower_page;
- inode = page->mapping->host;
+ inode = page_inode(page);
lower_inode = ecryptfs_inode_to_lower(inode);
/* NOTE: Recently swapped with grab_cache_page(), since
* sync_page() just makes sure that pending I/O gets done. */
@@ -814,8 +814,8 @@ static void ecryptfs_sync_page(struct pa
ecryptfs_printk(KERN_DEBUG, "find_lock_page failed\n");
return;
}
- if (lower_page->mapping->a_ops->sync_page)
- lower_page->mapping->a_ops->sync_page(lower_page);
+ if (page_mapping_cache(lower_page)->a_ops->sync_page)
+ page_mapping_cache(lower_page)->a_ops->sync_page(lower_page);
ecryptfs_printk(KERN_DEBUG, "Unlocking page with index = [0x%.16x]\n",
lower_page->index);
unlock_page(lower_page);
-
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