Use zero_user_page() in ext4 where possible. Signed-off-by: Eric Sandeen <sandeen@xxxxxxxxxx> Index: linux-2.6.22-rc4-mm2/fs/ext4/inode.c =================================================================== --- linux-2.6.22-rc4-mm2.orig/fs/ext4/inode.c +++ linux-2.6.22-rc4-mm2/fs/ext4/inode.c @@ -1830,7 +1830,6 @@ int ext4_block_truncate_page(handle_t *h struct inode *inode = mapping->host; struct buffer_head *bh; int err = 0; - void *kaddr; if ((EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL) && test_opt(inode->i_sb, EXTENTS) && @@ -1847,10 +1846,7 @@ int ext4_block_truncate_page(handle_t *h */ if (!page_has_buffers(page) && test_opt(inode->i_sb, NOBH) && ext4_should_writeback_data(inode) && PageUptodate(page)) { - kaddr = kmap_atomic(page, KM_USER0); - memset(kaddr + offset, 0, length); - flush_dcache_page(page); - kunmap_atomic(kaddr, KM_USER0); + zero_user_page(page, offset, length, KM_USER0); set_page_dirty(page); goto unlock; } @@ -1903,10 +1899,7 @@ int ext4_block_truncate_page(handle_t *h goto unlock; } - kaddr = kmap_atomic(page, KM_USER0); - memset(kaddr + offset, 0, length); - flush_dcache_page(page); - kunmap_atomic(kaddr, KM_USER0); + zero_user_page(page, offset, length, KM_USER0); BUFFER_TRACE(bh, "zeroed end of block"); - To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html