From: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> To: "Theodore Ts'o" <tytso@mit.edu>, Andreas Dilger <adilger.kernel@dilger.ca>, Jan Kara <jack@suse.com>, Andrew Morton <akpm@linux-foundation.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk>, Hugh Dickins <hughd@google.com>, Andrea Arcangeli <aarcange@redhat.com>, Dave Hansen <dave.hansen@intel.com>, Vlastimil Babka <vbabka@suse.cz>, Matthew Wilcox <willy@infradead.org>, Ross Zwisler <ross.zwisler@linux.intel.com>, linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-block@vger.kernel.org, "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Subject: [PATCHv4 39/43] ext4: make EXT4_IOC_MOVE_EXT work with huge pages Date: Tue, 25 Oct 2016 03:13:38 +0300 [thread overview] Message-ID: <20161025001342.76126-40-kirill.shutemov@linux.intel.com> (raw) In-Reply-To: <20161025001342.76126-1-kirill.shutemov@linux.intel.com> Adjust how we find relevant block within page and how we clear the required part of the page. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> --- fs/ext4/move_extent.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/fs/ext4/move_extent.c b/fs/ext4/move_extent.c index 6fc14def0c70..2efa9deb47a9 100644 --- a/fs/ext4/move_extent.c +++ b/fs/ext4/move_extent.c @@ -210,7 +210,9 @@ mext_page_mkuptodate(struct page *page, unsigned from, unsigned to) return err; } if (!buffer_mapped(bh)) { - zero_user(page, block_start, blocksize); + zero_user(page + block_start / PAGE_SIZE, + block_start % PAGE_SIZE, + blocksize); set_buffer_uptodate(bh); continue; } @@ -267,10 +269,11 @@ move_extent_per_page(struct file *o_filp, struct inode *donor_inode, unsigned int tmp_data_size, data_size, replaced_size; int i, err2, jblocks, retries = 0; int replaced_count = 0; - int from = data_offset_in_page << orig_inode->i_blkbits; + int from; int blocks_per_page = PAGE_SIZE >> orig_inode->i_blkbits; struct super_block *sb = orig_inode->i_sb; struct buffer_head *bh = NULL; + int diff; /* * It needs twice the amount of ordinary journal buffers because @@ -355,6 +358,9 @@ move_extent_per_page(struct file *o_filp, struct inode *donor_inode, goto unlock_pages; } data_copy: + diff = (pagep[0] - compound_head(pagep[0])) * blocks_per_page; + from = (data_offset_in_page + diff) << orig_inode->i_blkbits; + pagep[0] = compound_head(pagep[0]); *err = mext_page_mkuptodate(pagep[0], from, from + replaced_size); if (*err) goto unlock_pages; @@ -384,7 +390,7 @@ move_extent_per_page(struct file *o_filp, struct inode *donor_inode, if (!page_has_buffers(pagep[0])) create_empty_buffers(pagep[0], 1 << orig_inode->i_blkbits, 0); bh = page_buffers(pagep[0]); - for (i = 0; i < data_offset_in_page; i++) + for (i = 0; i < data_offset_in_page + diff; i++) bh = bh->b_this_page; for (i = 0; i < block_len_in_page; i++) { *err = ext4_get_block(orig_inode, orig_blk_offset + i, bh, 0); -- 2.9.3
WARNING: multiple messages have this Message-ID (diff)
From: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> To: "Theodore Ts'o" <tytso@mit.edu>, Andreas Dilger <adilger.kernel@dilger.ca>, Jan Kara <jack@suse.com>, Andrew Morton <akpm@linux-foundation.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk>, Hugh Dickins <hughd@google.com>, Andrea Arcangeli <aarcange@redhat.com>, Dave Hansen <dave.hansen@intel.com>, Vlastimil Babka <vbabka@suse.cz>, Matthew Wilcox <willy@infradead.org>, Ross Zwisler <ross.zwisler@linux.intel.com>, linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-block@vger.kernel.org, "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Subject: [PATCHv4 39/43] ext4: make EXT4_IOC_MOVE_EXT work with huge pages Date: Tue, 25 Oct 2016 03:13:38 +0300 [thread overview] Message-ID: <20161025001342.76126-40-kirill.shutemov@linux.intel.com> (raw) In-Reply-To: <20161025001342.76126-1-kirill.shutemov@linux.intel.com> Adjust how we find relevant block within page and how we clear the required part of the page. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> --- fs/ext4/move_extent.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/fs/ext4/move_extent.c b/fs/ext4/move_extent.c index 6fc14def0c70..2efa9deb47a9 100644 --- a/fs/ext4/move_extent.c +++ b/fs/ext4/move_extent.c @@ -210,7 +210,9 @@ mext_page_mkuptodate(struct page *page, unsigned from, unsigned to) return err; } if (!buffer_mapped(bh)) { - zero_user(page, block_start, blocksize); + zero_user(page + block_start / PAGE_SIZE, + block_start % PAGE_SIZE, + blocksize); set_buffer_uptodate(bh); continue; } @@ -267,10 +269,11 @@ move_extent_per_page(struct file *o_filp, struct inode *donor_inode, unsigned int tmp_data_size, data_size, replaced_size; int i, err2, jblocks, retries = 0; int replaced_count = 0; - int from = data_offset_in_page << orig_inode->i_blkbits; + int from; int blocks_per_page = PAGE_SIZE >> orig_inode->i_blkbits; struct super_block *sb = orig_inode->i_sb; struct buffer_head *bh = NULL; + int diff; /* * It needs twice the amount of ordinary journal buffers because @@ -355,6 +358,9 @@ move_extent_per_page(struct file *o_filp, struct inode *donor_inode, goto unlock_pages; } data_copy: + diff = (pagep[0] - compound_head(pagep[0])) * blocks_per_page; + from = (data_offset_in_page + diff) << orig_inode->i_blkbits; + pagep[0] = compound_head(pagep[0]); *err = mext_page_mkuptodate(pagep[0], from, from + replaced_size); if (*err) goto unlock_pages; @@ -384,7 +390,7 @@ move_extent_per_page(struct file *o_filp, struct inode *donor_inode, if (!page_has_buffers(pagep[0])) create_empty_buffers(pagep[0], 1 << orig_inode->i_blkbits, 0); bh = page_buffers(pagep[0]); - for (i = 0; i < data_offset_in_page; i++) + for (i = 0; i < data_offset_in_page + diff; i++) bh = bh->b_this_page; for (i = 0; i < block_len_in_page; i++) { *err = ext4_get_block(orig_inode, orig_blk_offset + i, bh, 0); -- 2.9.3 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2016-10-25 0:14 UTC|newest] Thread overview: 104+ messages / expand[flat|nested] mbox.gz Atom feed top 2016-10-25 0:12 [PATCHv4 00/43] ext4: support of huge pages Kirill A. Shutemov 2016-10-25 0:12 ` Kirill A. Shutemov 2016-10-25 0:12 ` Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 01/43] tools: Add WARN_ON_ONCE Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 02/43] radix tree test suite: Allow GFP_ATOMIC allocations to fail Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 03/43] radix-tree: Add radix_tree_join Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 04/43] radix-tree: Add radix_tree_split Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 05/43] radix-tree: Add radix_tree_split_preload() Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 06/43] mm, shmem: swich huge tmpfs to multi-order radix-tree entries Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 07/43] Revert "radix-tree: implement radix_tree_maybe_preload_order()" Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 08/43] page-flags: relax page flag policy for few flags Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 09/43] mm, rmap: account file thp pages Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 10/43] thp: try to free page's buffers before attempt split Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 11/43] thp: handle write-protection faults for file THP Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 12/43] truncate: make sure invalidate_mapping_pages() can discard huge pages Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 13/43] filemap: allocate huge page in page_cache_read(), if allowed Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 14/43] filemap: handle huge pages in do_generic_file_read() Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 15/43] filemap: allocate huge page in pagecache_get_page(), if allowed Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 16/43] filemap: handle huge pages in filemap_fdatawait_range() Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 17/43] HACK: readahead: alloc huge pages, if allowed Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 18/43] block: define BIO_MAX_PAGES to HPAGE_PMD_NR if huge page cache enabled Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 7:21 ` Christoph Hellwig 2016-10-25 7:21 ` Christoph Hellwig 2016-10-25 12:54 ` Kirill A. Shutemov 2016-10-25 12:54 ` Kirill A. Shutemov 2016-10-26 4:13 ` Andreas Dilger 2016-10-26 7:30 ` Ming Lei 2016-10-26 7:30 ` Ming Lei 2016-10-26 7:30 ` Ming Lei 2016-10-26 7:36 ` Christoph Hellwig 2016-10-26 7:36 ` Christoph Hellwig 2016-10-26 7:36 ` Christoph Hellwig 2016-10-26 7:36 ` Christoph Hellwig 2016-10-26 7:36 ` Christoph Hellwig 2016-10-26 7:35 ` Christoph Hellwig 2016-10-26 7:35 ` Christoph Hellwig 2016-10-25 0:13 ` [PATCHv4 19/43] brd: make it handle huge pages Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 20/43] mm: make write_cache_pages() work on " Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 21/43] thp: introduce hpage_size() and hpage_mask() Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 22/43] thp: do not threat slab pages as huge in hpage_{nr_pages,size,mask} Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 23/43] thp: make thp_get_unmapped_area() respect S_HUGE_MODE Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 24/43] fs: make block_read_full_page() be able to read huge page Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 25/43] fs: make block_write_{begin,end}() be able to handle huge pages Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 26/43] fs: make block_page_mkwrite() aware about " Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 27/43] truncate: make truncate_inode_pages_range() " Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 28/43] truncate: make invalidate_inode_pages2_range() " Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 29/43] mm, hugetlb: switch hugetlbfs to multi-order radix-tree entries Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 30/43] mm: account huge pages to dirty, writaback, reclaimable, etc Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 31/43] ext4: make ext4_mpage_readpages() hugepage-aware Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 32/43] ext4: make ext4_writepage() work on huge pages Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 33/43] ext4: handle huge pages in ext4_page_mkwrite() Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 34/43] ext4: handle huge pages in __ext4_block_zero_page_range() Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 35/43] ext4: make ext4_block_write_begin() aware about huge pages Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 36/43] ext4: handle huge pages in ext4_da_write_end() Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 37/43] ext4: make ext4_da_page_release_reservation() aware about huge pages Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 38/43] ext4: handle writeback with " Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov [this message] 2016-10-25 0:13 ` [PATCHv4 39/43] ext4: make EXT4_IOC_MOVE_EXT work " Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 40/43] ext4: fix SEEK_DATA/SEEK_HOLE for " Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 41/43] ext4: make fallocate() operations work with " Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 42/43] mm, fs, ext4: expand use of page_mapping() and page_to_pgoff() Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov 2016-10-25 0:13 ` [PATCHv4 43/43] ext4, vfs: add huge= mount option Kirill A. Shutemov 2016-10-25 0:13 ` Kirill A. Shutemov
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