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Subject[16/36] Use page_cache_xxx in fs/ext3
Use page_cache_xxx in fs/ext3

Signed-off-by: Christoph Lameter <clameter@sgi.com>
---
fs/ext3/dir.c | 3 ++-
fs/ext3/inode.c | 34 +++++++++++++++++-----------------
2 files changed, 19 insertions(+), 18 deletions(-)
diff --git a/fs/ext3/dir.c b/fs/ext3/dir.c
index c00723a..a65b5a7 100644
--- a/fs/ext3/dir.c
+++ b/fs/ext3/dir.c
@@ -137,7 +137,8 @@ static int ext3_readdir(struct file * filp,
&map_bh, 0, 0);
if (err > 0) {
pgoff_t index = map_bh.b_blocknr >>
- (PAGE_CACHE_SHIFT - inode->i_blkbits);
+ (page_cache_shift(inode->i_mapping)
+ - inode->i_blkbits);
if (!ra_has_index(&filp->f_ra, index))
page_cache_sync_readahead(
sb->s_bdev->bd_inode->i_mapping,
diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c
index eb3c264..986519b 100644
--- a/fs/ext3/inode.c
+++ b/fs/ext3/inode.c
@@ -1224,7 +1224,7 @@ static int ext3_ordered_commit_write(struct file *file, struct page *page,
*/
loff_t new_i_size;

- new_i_size = ((loff_t)page->index << PAGE_CACHE_SHIFT) + to;
+ new_i_size = page_cache_pos(page->mapping, page->index, to);
if (new_i_size > EXT3_I(inode)->i_disksize)
EXT3_I(inode)->i_disksize = new_i_size;
ret = generic_commit_write(file, page, from, to);
@@ -1243,7 +1243,7 @@ static int ext3_writeback_commit_write(struct file *file, struct page *page,
int ret = 0, ret2;
loff_t new_i_size;

- new_i_size = ((loff_t)page->index << PAGE_CACHE_SHIFT) + to;
+ new_i_size = page_cache_pos(inode->i_mapping, page->index, to);
if (new_i_size > EXT3_I(inode)->i_disksize)
EXT3_I(inode)->i_disksize = new_i_size;

@@ -1270,7 +1270,7 @@ static int ext3_journalled_commit_write(struct file *file,
/*
* Here we duplicate the generic_commit_write() functionality
*/
- pos = ((loff_t)page->index << PAGE_CACHE_SHIFT) + to;
+ pos = page_cache_pos(page->mapping, page->index, to);

ret = walk_page_buffers(handle, page_buffers(page), from,
to, &partial, commit_write_fn);
@@ -1422,6 +1422,7 @@ static int ext3_ordered_writepage(struct page *page,
handle_t *handle = NULL;
int ret = 0;
int err;
+ int pagesize = page_cache_size(inode->i_mapping);

J_ASSERT(PageLocked(page));

@@ -1444,8 +1445,7 @@ static int ext3_ordered_writepage(struct page *page,
(1 << BH_Dirty)|(1 << BH_Uptodate));
}
page_bufs = page_buffers(page);
- walk_page_buffers(handle, page_bufs, 0,
- PAGE_CACHE_SIZE, NULL, bget_one);
+ walk_page_buffers(handle, page_bufs, 0, pagesize, NULL, bget_one);

ret = block_write_full_page(page, ext3_get_block, wbc);

@@ -1462,13 +1462,12 @@ static int ext3_ordered_writepage(struct page *page,
* and generally junk.
*/
if (ret == 0) {
- err = walk_page_buffers(handle, page_bufs, 0, PAGE_CACHE_SIZE,
- NULL, journal_dirty_data_fn);
+ err = walk_page_buffers(handle, page_bufs, 0, pagesize,
+ NULL, journal_dirty_data_fn);
if (!ret)
ret = err;
}
- walk_page_buffers(handle, page_bufs, 0,
- PAGE_CACHE_SIZE, NULL, bput_one);
+ walk_page_buffers(handle, page_bufs, 0, pagesize, NULL, bput_one);
err = ext3_journal_stop(handle);
if (!ret)
ret = err;
@@ -1520,6 +1519,7 @@ static int ext3_journalled_writepage(struct page *page,
handle_t *handle = NULL;
int ret = 0;
int err;
+ int pagesize = page_cache_size(inode->i_mapping);

if (ext3_journal_current_handle())
goto no_write;
@@ -1536,17 +1536,16 @@ static int ext3_journalled_writepage(struct page *page,
* doesn't seem much point in redirtying the page here.
*/
ClearPageChecked(page);
- ret = block_prepare_write(page, 0, PAGE_CACHE_SIZE,
- ext3_get_block);
+ ret = block_prepare_write(page, 0, pagesize, ext3_get_block);
if (ret != 0) {
ext3_journal_stop(handle);
goto out_unlock;
}
ret = walk_page_buffers(handle, page_buffers(page), 0,
- PAGE_CACHE_SIZE, NULL, do_journal_get_write_access);
+ pagesize, NULL, do_journal_get_write_access);

err = walk_page_buffers(handle, page_buffers(page), 0,
- PAGE_CACHE_SIZE, NULL, commit_write_fn);
+ pagesize, NULL, commit_write_fn);
if (ret == 0)
ret = err;
EXT3_I(inode)->i_state |= EXT3_STATE_JDATA;
@@ -1761,8 +1760,8 @@ void ext3_set_aops(struct inode *inode)
static int ext3_block_truncate_page(handle_t *handle, struct page *page,
struct address_space *mapping, loff_t from)
{
- ext3_fsblk_t index = from >> PAGE_CACHE_SHIFT;
- unsigned offset = from & (PAGE_CACHE_SIZE-1);
+ ext3_fsblk_t index = page_cache_index(mapping, from);
+ unsigned offset = page_cache_offset(mapping, from);
unsigned blocksize, iblock, length, pos;
struct inode *inode = mapping->host;
struct buffer_head *bh;
@@ -1770,7 +1769,8 @@ static int ext3_block_truncate_page(handle_t *handle, struct page *page,

blocksize = inode->i_sb->s_blocksize;
length = blocksize - (offset & (blocksize - 1));
- iblock = index << (PAGE_CACHE_SHIFT - inode->i_sb->s_blocksize_bits);
+ iblock = index <<
+ (page_cache_shift(mapping) - inode->i_sb->s_blocksize_bits);

/*
* For "nobh" option, we can only work if we don't need to
@@ -2249,7 +2249,7 @@ void ext3_truncate(struct inode *inode)
page = NULL;
} else {
page = grab_cache_page(mapping,
- inode->i_size >> PAGE_CACHE_SHIFT);
+ page_cache_index(mapping, inode->i_size));
if (!page)
return;
}
--
1.5.2.4
--
-
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