V2->V3:
- reiserfs_commit_write(): Use common method to extract mapping from
page->mapping->host chain
Use page_cache_xxx in fs/reiserfs
Reviewed-by: Dave Chinner <dgc@xxxxxxx>
Signed-off-by: Christoph Lameter <clameter@xxxxxxx>
---
fs/reiserfs/file.c | 5 +++--
fs/reiserfs/inode.c | 36 ++++++++++++++++++++++--------------
fs/reiserfs/ioctl.c | 2 +-
fs/reiserfs/stree.c | 5 +++--
fs/reiserfs/tail_conversion.c | 5 +++--
fs/reiserfs/xattr.c | 19 ++++++++++---------
6 files changed, 42 insertions(+), 30 deletions(-)
Index: linux-2.6/fs/reiserfs/file.c
===================================================================
--- linux-2.6.orig/fs/reiserfs/file.c 2008-02-14 15:19:13.573515455 -0800
+++ linux-2.6/fs/reiserfs/file.c 2008-02-15 16:15:19.373226761 -0800
@@ -161,11 +161,12 @@ int reiserfs_commit_page(struct inode *i
int partial = 0;
unsigned blocksize;
struct buffer_head *bh, *head;
- unsigned long i_size_index = inode->i_size >> PAGE_CACHE_SHIFT;
+ unsigned long i_size_index =
+ page_cache_index(inode->i_mapping, inode->i_size);
int new;
int logit = reiserfs_file_data_log(inode);
struct super_block *s = inode->i_sb;
- int bh_per_page = PAGE_CACHE_SIZE / s->s_blocksize;
+ int bh_per_page = page_cache_size(inode->i_mapping) / s->s_blocksize;
struct reiserfs_transaction_handle th;
int ret = 0;
Index: linux-2.6/fs/reiserfs/inode.c
===================================================================
--- linux-2.6.orig/fs/reiserfs/inode.c 2008-02-14 15:19:13.633515774 -0800
+++ linux-2.6/fs/reiserfs/inode.c 2008-02-15 16:15:19.397226989 -0800
@@ -337,7 +337,8 @@ static int _get_block_create_0(struct in
goto finished;
}
// read file tail into part of page
- offset = (cpu_key_k_offset(&key) - 1) & (PAGE_CACHE_SIZE - 1);
+ offset = page_cache_offset(inode->i_mapping,
+ cpu_key_k_offset(&key) - 1);
fs_gen = get_generation(inode->i_sb);
copy_item_head(&tmp_ih, ih);
@@ -523,10 +524,10 @@ static int convert_tail_for_hole(struct
return -EIO;
/* always try to read until the end of the block */
- tail_start = tail_offset & (PAGE_CACHE_SIZE - 1);
+ tail_start = page_cache_offset(inode->i_mapping, tail_offset);
tail_end = (tail_start | (bh_result->b_size - 1)) + 1;
- index = tail_offset >> PAGE_CACHE_SHIFT;
+ index = page_cache_index(inode->i_mapping, tail_offset);
/* hole_page can be zero in case of direct_io, we are sure
that we cannot get here if we write with O_DIRECT into
tail page */
@@ -2000,11 +2001,13 @@ static int grab_tail_page(struct inode *
/* we want the page with the last byte in the file,
** not the page that will hold the next byte for appending
*/
- unsigned long index = (p_s_inode->i_size - 1) >> PAGE_CACHE_SHIFT;
+ unsigned long index = page_cache_index(p_s_inode->i_mapping,
+ p_s_inode->i_size - 1);
unsigned long pos = 0;
unsigned long start = 0;
unsigned long blocksize = p_s_inode->i_sb->s_blocksize;
- unsigned long offset = (p_s_inode->i_size) & (PAGE_CACHE_SIZE - 1);
+ unsigned long offset = page_cache_offset(p_s_inode->i_mapping,
+ p_s_inode->i_size);
struct buffer_head *bh;
struct buffer_head *head;
struct page *page;
@@ -2076,7 +2079,8 @@ int reiserfs_truncate_file(struct inode
{
struct reiserfs_transaction_handle th;
/* we want the offset for the first byte after the end of the file */
- unsigned long offset = p_s_inode->i_size & (PAGE_CACHE_SIZE - 1);
+ unsigned long offset = page_cache_offset(p_s_inode->i_mapping,
+ p_s_inode->i_size);
unsigned blocksize = p_s_inode->i_sb->s_blocksize;
unsigned length;
struct page *page = NULL;
@@ -2225,7 +2229,7 @@ static int map_block_for_writepage(struc
} else if (is_direct_le_ih(ih)) {
char *p;
p = page_address(bh_result->b_page);
- p += (byte_offset - 1) & (PAGE_CACHE_SIZE - 1);
+ p += page_cache_offset(inode->i_mapping, byte_offset - 1);
copy_size = ih_item_len(ih) - pos_in_item;
fs_gen = get_generation(inode->i_sb);
@@ -2324,7 +2328,8 @@ static int reiserfs_write_full_page(stru
struct writeback_control *wbc)
{
struct inode *inode = page->mapping->host;
- unsigned long end_index = inode->i_size >> PAGE_CACHE_SHIFT;
+ unsigned long end_index = page_cache_index(inode->i_mapping,
+ inode->i_size);
int error = 0;
unsigned long block;
sector_t last_block;
@@ -2334,7 +2339,7 @@ static int reiserfs_write_full_page(stru
int checked = PageChecked(page);
struct reiserfs_transaction_handle th;
struct super_block *s = inode->i_sb;
- int bh_per_page = PAGE_CACHE_SIZE / s->s_blocksize;
+ int bh_per_page = page_cache_size(inode->i_mapping) / s->s_blocksize;
th.t_trans_id = 0;
/* no logging allowed when nonblocking or from PF_MEMALLOC */
@@ -2361,16 +2366,18 @@ static int reiserfs_write_full_page(stru
if (page->index >= end_index) {
unsigned last_offset;
- last_offset = inode->i_size & (PAGE_CACHE_SIZE - 1);
+ last_offset = page_cache_offset(inode->i_mapping, inode->i_size);
/* no file contents in this page */
if (page->index >= end_index + 1 || !last_offset) {
unlock_page(page);
return 0;
}
- zero_user_segment(page, last_offset, PAGE_CACHE_SIZE);
+ zero_user_segment(page, last_offset,
+ page_cache_size(inode->i_mapping));
}
bh = head;
- block = page->index << (PAGE_CACHE_SHIFT - s->s_blocksize_bits);
+ block = page->index << (page_cache_shift(inode->i_mapping)
+ - s->s_blocksize_bits);
last_block = (i_size_read(inode) - 1) >> inode->i_blkbits;
/* first map all the buffers, logging any direct items we find */
do {
@@ -2764,8 +2771,9 @@ static int reiserfs_write_end(struct fil
int reiserfs_commit_write(struct file *f, struct page *page,
unsigned from, unsigned to)
{
- struct inode *inode = page->mapping->host;
- loff_t pos = ((loff_t) page->index << PAGE_CACHE_SHIFT) + to;
+ struct address_space *mapping = page->mapping;
+ struct inode *inode = mapping->host;
+ loff_t pos = page_cache_pos(mapping, page->index, to);
int ret = 0;
int update_sd = 0;
struct reiserfs_transaction_handle *th = NULL;
Index: linux-2.6/fs/reiserfs/ioctl.c
===================================================================
--- linux-2.6.orig/fs/reiserfs/ioctl.c 2008-02-14 15:19:13.633515774 -0800
+++ linux-2.6/fs/reiserfs/ioctl.c 2008-02-15 16:15:19.397226989 -0800
@@ -175,8 +175,8 @@ static int reiserfs_unpack(struct inode
** reiserfs_prepare_write on that page. This will force a
** reiserfs_get_block to unpack the tail for us.
*/
- index = inode->i_size >> PAGE_CACHE_SHIFT;
mapping = inode->i_mapping;
+ index = page_cache_index(mapping, inode->i_size);
page = grab_cache_page(mapping, index);
retval = -ENOMEM;
if (!page) {
Index: linux-2.6/fs/reiserfs/stree.c
===================================================================
--- linux-2.6.orig/fs/reiserfs/stree.c 2008-02-14 15:19:13.637515939 -0800
+++ linux-2.6/fs/reiserfs/stree.c 2008-02-15 16:15:19.405227028 -0800
@@ -1283,7 +1283,8 @@ int reiserfs_delete_item(struct reiserfs
*/
data = kmap_atomic(p_s_un_bh->b_page, KM_USER0);
- off = ((le_ih_k_offset(&s_ih) - 1) & (PAGE_CACHE_SIZE - 1));
+ off = page_cache_offset(p_s_inode->i_mapping,
+ le_ih_k_offset(&s_ih) - 1);
memcpy(data + off,
B_I_PITEM(PATH_PLAST_BUFFER(p_s_path), &s_ih),
n_ret_value);
@@ -1439,7 +1440,7 @@ static void unmap_buffers(struct page *p
if (page) {
if (page_has_buffers(page)) {
- tail_index = pos & (PAGE_CACHE_SIZE - 1);
+ tail_index = page_cache_offset(page_mapping(page), pos);
cur_index = 0;
head = page_buffers(page);
bh = head;
Index: linux-2.6/fs/reiserfs/tail_conversion.c
===================================================================
--- linux-2.6.orig/fs/reiserfs/tail_conversion.c 2008-02-14 15:19:13.641516071 -0800
+++ linux-2.6/fs/reiserfs/tail_conversion.c 2008-02-15 16:15:19.413227098 -0800
@@ -128,7 +128,8 @@ int direct2indirect(struct reiserfs_tran
*/
if (up_to_date_bh) {
unsigned pgoff =
- (tail_offset + total_tail - 1) & (PAGE_CACHE_SIZE - 1);
+ page_cache_offset(inode->i_mapping,
+ tail_offset + total_tail - 1);
char *kaddr = kmap_atomic(up_to_date_bh->b_page, KM_USER0);
memset(kaddr + pgoff, 0, n_blk_size - total_tail);
kunmap_atomic(kaddr, KM_USER0);
@@ -238,7 +239,7 @@ int indirect2direct(struct reiserfs_tran
** the page was locked and this part of the page was up to date when
** indirect2direct was called, so we know the bytes are still valid
*/
- tail = tail + (pos & (PAGE_CACHE_SIZE - 1));
+ tail = tail + page_cache_offset(p_s_inode->i_mapping, pos);
PATH_LAST_POSITION(p_s_path)++;
Index: linux-2.6/fs/reiserfs/xattr.c
===================================================================
--- linux-2.6.orig/fs/reiserfs/xattr.c 2008-02-14 15:19:13.641516071 -0800
+++ linux-2.6/fs/reiserfs/xattr.c 2008-02-15 16:15:19.413227098 -0800
@@ -493,13 +493,13 @@ reiserfs_xattr_set(struct inode *inode,
while (buffer_pos < buffer_size || buffer_pos == 0) {
size_t chunk;
size_t skip = 0;
- size_t page_offset = (file_pos & (PAGE_CACHE_SIZE - 1));
- if (buffer_size - buffer_pos > PAGE_CACHE_SIZE)
- chunk = PAGE_CACHE_SIZE;
+ size_t page_offset = page_cache_offset(mapping, file_pos);
+ if (buffer_size - buffer_pos > page_cache_size(mapping))
+ chunk = page_cache_size(mapping);
else
chunk = buffer_size - buffer_pos;
- page = reiserfs_get_page(xinode, file_pos >> PAGE_CACHE_SHIFT);
+ page = reiserfs_get_page(xinode, page_cache_index(mapping, file_pos));
if (IS_ERR(page)) {
err = PTR_ERR(page);
goto out_filp;
@@ -511,8 +511,8 @@ reiserfs_xattr_set(struct inode *inode,
if (file_pos == 0) {
struct reiserfs_xattr_header *rxh;
skip = file_pos = sizeof(struct reiserfs_xattr_header);
- if (chunk + skip > PAGE_CACHE_SIZE)
- chunk = PAGE_CACHE_SIZE - skip;
+ if (chunk + skip > page_cache_size(mapping))
+ chunk = page_cache_size(mapping) - skip;
rxh = (struct reiserfs_xattr_header *)data;
rxh->h_magic = cpu_to_le32(REISERFS_XATTR_MAGIC);
rxh->h_hash = cpu_to_le32(xahash);
@@ -603,12 +603,13 @@ reiserfs_xattr_get(const struct inode *i
size_t chunk;
char *data;
size_t skip = 0;
- if (isize - file_pos > PAGE_CACHE_SIZE)
- chunk = PAGE_CACHE_SIZE;
+ if (isize - file_pos > page_cache_size(xinode->i_mapping))
+ chunk = page_cache_size(xinode->i_mapping);
else
chunk = isize - file_pos;
- page = reiserfs_get_page(xinode, file_pos >> PAGE_CACHE_SHIFT);
+ page = reiserfs_get_page(xinode,
+ page_cache_index(xinode->i_mapping, file_pos));
if (IS_ERR(page)) {
err = PTR_ERR(page);
goto out_dput;
--
-
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