From: akpm@linux-foundation.org Subject: + use-page_cache_xxx-in-fs-ext3.patch added to -mm tree Date: Mon, 18 Feb 2008 02:16:58 -0800 Message-ID: <200802181017.m1IAHuOe019854@imap1.linux-foundation.org> Reply-To: linux-kernel@vger.kernel.org Cc: clameter@sgi.com, dgc@sgi.com, linux-ext4@vger.kernel.org To: mm-commits@vger.kernel.org Return-path: Sender: mm-commits-owner@vger.kernel.org List-Id: linux-ext4.vger.kernel.org The patch titled Use page_cache_xxx in fs/ext3 has been added to the -mm tree. Its filename is use-page_cache_xxx-in-fs-ext3.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find out what to do about this The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: Use page_cache_xxx in fs/ext3 From: Christoph Lameter Use page_cache_xxx in fs/ext3 Reviewed-by: Dave Chinner Signed-off-by: Christoph Lameter Cc: Signed-off-by: Andrew Morton --- fs/ext3/dir.c | 3 ++- fs/ext3/inode.c | 39 ++++++++++++++++++++------------------- 2 files changed, 22 insertions(+), 20 deletions(-) diff -puN fs/ext3/dir.c~use-page_cache_xxx-in-fs-ext3 fs/ext3/dir.c --- a/fs/ext3/dir.c~use-page_cache_xxx-in-fs-ext3 +++ a/fs/ext3/dir.c @@ -133,7 +133,8 @@ static int ext3_readdir(struct file * fi &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 -puN fs/ext3/inode.c~use-page_cache_xxx-in-fs-ext3 fs/ext3/inode.c --- a/fs/ext3/inode.c~use-page_cache_xxx-in-fs-ext3 +++ a/fs/ext3/inode.c @@ -1147,8 +1147,8 @@ static int ext3_write_begin(struct file pgoff_t index; unsigned from, to; - index = pos >> PAGE_CACHE_SHIFT; - from = pos & (PAGE_CACHE_SIZE - 1); + index = page_cache_index(mapping, pos); + from = page_cache_offset(mapping, pos); to = from + len; retry: @@ -1244,7 +1244,7 @@ static int ext3_ordered_write_end(struct unsigned from, to; int ret = 0, ret2; - from = pos & (PAGE_CACHE_SIZE - 1); + from = page_cache_offset(mapping, pos); to = from + len; ret = walk_page_buffers(handle, page_buffers(page), @@ -1314,7 +1314,7 @@ static int ext3_journalled_write_end(str int partial = 0; unsigned from, to; - from = pos & (PAGE_CACHE_SIZE - 1); + from = page_cache_offset(mapping, pos); to = from + len; if (copied < len) { @@ -1477,6 +1477,7 @@ static int ext3_ordered_writepage(struct handle_t *handle = NULL; int ret = 0; int err; + int pagesize = page_cache_size(inode->i_mapping); J_ASSERT(PageLocked(page)); @@ -1499,8 +1500,7 @@ static int ext3_ordered_writepage(struct (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); @@ -1517,13 +1517,12 @@ static int ext3_ordered_writepage(struct * 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; @@ -1571,10 +1570,12 @@ out_fail: static int ext3_journalled_writepage(struct page *page, struct writeback_control *wbc) { - struct inode *inode = page->mapping->host; + struct address_space *mapping = page->mapping; + struct inode *inode = mapping->host; 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; @@ -1591,17 +1592,16 @@ static int ext3_journalled_writepage(str * 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, write_end_fn); + pagesize, NULL, write_end_fn); if (ret == 0) ret = err; EXT3_I(inode)->i_state |= EXT3_STATE_JDATA; @@ -1824,8 +1824,8 @@ 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; @@ -1833,7 +1833,8 @@ static int ext3_block_truncate_page(hand 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 @@ -2312,7 +2313,7 @@ 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; } _ Patches currently in -mm which might be from clameter@sgi.com are define-functions-for-page-cache-handling.patch gregkh-driver-kset-move-sys-slab-to-sys-kernel-slab-slabinfo-fallback-from-sys-kernel-slab-to-sys-slab.patch use-page_cache_xxx-in-fs-splicec.patch git-unionfs.patch use-page_cache_xxx-for-fs-xfs.patch git-slub.patch x86-cast-cmpxchg-and-cmpxchg_local-result-for-386-and-486.patch remove-set_migrateflags.patch use-page_cache_xxx-functions-in-mm-filemapc.patch use-page_cache_xxx-in-mm-page-writebackc.patch use-page_cache_xxx-in-mm-truncatec.patch use-page_cache_xxx-in-mm-rmapc.patch use-page_cache_xxx-in-mm-filemap_xipc.patch use-page_cache_xxx-in-mm-migratec.patch use-page_cache_xxx-in-fs-libfsc.patch use-page_cache_xxx-in-fs-sync.patch use-page_cache_xxx-in-fs-bufferc.patch use-page_cache_xxx-in-mm-mpagec.patch use-page_cache_xxx-in-mm-fadvisec.patch use-page_cache_xxx-in-ext2.patch use-page_cache_xxx-in-fs-ext3.patch use-page_cache_xxx-in-fs-reiserfs.patch use-page_cache_xxx-in-fs-ext4.patch reiser4.patch reiser4-portion-of-zero_user-cleanup-patch.patch page-owner-tracking-leak-detector.patch