Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262530AbTELTTP (ORCPT ); Mon, 12 May 2003 15:19:15 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262531AbTELTTP (ORCPT ); Mon, 12 May 2003 15:19:15 -0400 Received: from thebsh.namesys.com ([212.16.7.65]:11719 "HELO thebsh.namesys.com") by vger.kernel.org with SMTP id S262530AbTELTTG (ORCPT ); Mon, 12 May 2003 15:19:06 -0400 Message-ID: <3EBFF6A1.2080501@namesys.com> Date: Mon, 12 May 2003 23:31:45 +0400 From: Hans Reiser User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.3a) Gecko/20021212 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Marcelo Tosatti CC: Linux Kernel Mailing List Subject: [BK] [2.4] reiserfs: fix one more directio vs tails problem, resend] Content-Type: multipart/mixed; boundary="------------020009050906070405080109" Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 8694 Lines: 236 This is a multi-part message in MIME format. --------------020009050906070405080109 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit -- Hans --------------020009050906070405080109 Content-Type: message/rfc822; name="[2.4] reiserfs: fix one more directio vs tails problem, resend" Content-Transfer-Encoding: 7bit Content-Disposition: inline; filename="[2.4] reiserfs: fix one more directio vs tails problem, resend" Return-Path: Delivered-To: reiser@namesys.com Received: (qmail 760 invoked from network); 12 May 2003 14:01:30 -0000 Received: from angband.namesys.com (postfix@212.16.7.85) by thebsh.namesys.com with SMTP; 12 May 2003 14:01:30 -0000 Received: by angband.namesys.com (Postfix, from userid 521) id 5CC7D328AB8; Mon, 12 May 2003 18:01:30 +0400 (MSD) Date: Mon, 12 May 2003 18:01:30 +0400 From: Oleg Drokin To: reiser@namesys.com Subject: [2.4] reiserfs: fix one more directio vs tails problem, resend Message-ID: <20030512140130.GA6665@namesys.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.4i Hello! This changeset fixes another set problems related to directio vs packed tails. Thanks to Mingming Cao for bringing the issue to our attention. Most of the patch was made by Chris Mason. Please pull from bk://namesys.com/bk/reiser3-linux-2.4-directiofix2 Diffstat: fs/reiserfs/inode.c | 12 ++++++- fs/reiserfs/journal.c | 66 +++++++++++++++++++++++++++--------------- fs/reiserfs/tail_conversion.c | 1 include/linux/reiserfs_fs.h | 2 + include/linux/reiserfs_fs_i.h | 7 ++++ 5 files changed, 63 insertions(+), 25 deletions(-) Plain text patch: # This is a BitKeeper generated patch for the following project: # Project Name: Linux kernel tree # This patch format is intended for GNU patch command version 2.5 or higher. # This patch includes the following deltas: # ChangeSet 1.1158 -> 1.1159 # include/linux/reiserfs_fs_i.h 1.8 -> 1.9 # fs/reiserfs/inode.c 1.42 -> 1.43 # fs/reiserfs/tail_conversion.c 1.16 -> 1.17 # fs/reiserfs/journal.c 1.28 -> 1.29 # include/linux/reiserfs_fs.h 1.26 -> 1.27 # # The following is the BitKeeper ChangeSet Log # -------------------------------------------- # 03/05/03 green@angband.namesys.com 1.1159 # reiserfs: Fix another O_DIRECT vs tails problem. Mostly by Chris Mason. # Thanks to Mingming Cao for bringing the issue to our attention. # -------------------------------------------- # diff -Nru a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c --- a/fs/reiserfs/inode.c Mon May 12 18:00:53 2003 +++ b/fs/reiserfs/inode.c Mon May 12 18:00:53 2003 @@ -469,7 +469,7 @@ tail_end = (tail_start | (bh_result->b_size - 1)) + 1 ; index = tail_offset >> PAGE_CACHE_SHIFT ; - if (index != hole_page->index) { + if ( !hole_page || index != hole_page->index) { tail_page = grab_cache_page(inode->i_mapping, index) ; retval = -ENOMEM; if (!tail_page) { @@ -1810,7 +1810,12 @@ flush_dcache_page(page) ; kunmap(page) ; if (buffer_mapped(bh) && bh->b_blocknr != 0) { - mark_buffer_dirty(bh) ; + if (!atomic_set_buffer_dirty(bh)) { + set_buffer_flushtime(bh); + refile_buffer(bh); + buffer_insert_inode_data_queue(bh, p_s_inode); + balance_dirty(); + } } } UnlockPage(page) ; @@ -2158,6 +2163,9 @@ struct kiobuf *iobuf, unsigned long blocknr, int blocksize) { + lock_kernel(); + reiserfs_commit_for_tail(inode); + unlock_kernel(); return generic_direct_IO(rw, inode, iobuf, blocknr, blocksize, reiserfs_get_block_direct_io) ; } diff -Nru a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c --- a/fs/reiserfs/journal.c Mon May 12 18:00:53 2003 +++ b/fs/reiserfs/journal.c Mon May 12 18:00:53 2003 @@ -2655,32 +2655,52 @@ inode->u.reiserfs_i.i_trans_id = SB_JOURNAL(inode->i_sb)->j_trans_id ; } -static int reiserfs_inode_in_this_transaction(struct inode *inode) { - if (inode->u.reiserfs_i.i_trans_id == SB_JOURNAL(inode->i_sb)->j_trans_id || - inode->u.reiserfs_i.i_trans_id == 0) { - return 1; - } - return 0 ; +void reiserfs_update_tail_transaction(struct inode *inode) { + + inode->u.reiserfs_i.i_tail_trans_index = SB_JOURNAL_LIST_INDEX(inode->i_sb); + + inode->u.reiserfs_i.i_tail_trans_id = SB_JOURNAL(inode->i_sb)->j_trans_id ; +} + +static void __commit_trans_index(struct inode *inode, unsigned long id, + unsigned long index) +{ + struct reiserfs_journal_list *jl ; + struct reiserfs_transaction_handle th ; + struct super_block *sb = inode->i_sb ; + + jl = SB_JOURNAL_LIST(sb) + index; + + /* is it from the current transaction, or from an unknown transaction? */ + if (id == SB_JOURNAL(sb)->j_trans_id) { + journal_join(&th, sb, 1) ; + journal_end_sync(&th, sb, 1) ; + } else if (jl->j_trans_id == id) { + flush_commit_list(sb, jl, 1) ; + } + /* if the transaction id does not match, this list is long since flushed + ** and we don't have to do anything here + */ } +void reiserfs_commit_for_tail(struct inode *inode) { + unsigned long id = inode->u.reiserfs_i.i_tail_trans_id; + unsigned long index = inode->u.reiserfs_i.i_tail_trans_index; + /* for tails, if this info is unset there's nothing to commit */ + if (id && index) + __commit_trans_index(inode, id, index); +} void reiserfs_commit_for_inode(struct inode *inode) { - struct reiserfs_journal_list *jl ; - struct reiserfs_transaction_handle th ; - struct super_block *sb = inode->i_sb ; - - jl = SB_JOURNAL_LIST(sb) + inode->u.reiserfs_i.i_trans_index ; - - /* is it from the current transaction, or from an unknown transaction? */ - if (reiserfs_inode_in_this_transaction(inode)) { - journal_join(&th, sb, 1) ; - reiserfs_update_inode_transaction(inode) ; - journal_end_sync(&th, sb, 1) ; - } else if (jl->j_trans_id == inode->u.reiserfs_i.i_trans_id) { - flush_commit_list(sb, jl, 1) ; - } - /* if the transaction id does not match, this list is long since flushed - ** and we don't have to do anything here - */ + unsigned long id = inode->u.reiserfs_i.i_trans_id; + unsigned long index = inode->u.reiserfs_i.i_trans_index; + + /* for the whole inode, assume unset id or index means it was + * changed in the current transaction. More conservative + */ + if (!id || !index) + reiserfs_update_inode_transaction(inode) ; + + __commit_trans_index(inode, id, index); } void reiserfs_restore_prepared_buffer(struct super_block *p_s_sb, diff -Nru a/fs/reiserfs/tail_conversion.c b/fs/reiserfs/tail_conversion.c --- a/fs/reiserfs/tail_conversion.c Mon May 12 18:00:53 2003 +++ b/fs/reiserfs/tail_conversion.c Mon May 12 18:00:53 2003 @@ -133,6 +133,7 @@ inode->u.reiserfs_i.i_first_direct_byte = U32_MAX; + reiserfs_update_tail_transaction(inode); return 0; } diff -Nru a/include/linux/reiserfs_fs.h b/include/linux/reiserfs_fs.h --- a/include/linux/reiserfs_fs.h Mon May 12 18:00:53 2003 +++ b/include/linux/reiserfs_fs.h Mon May 12 18:00:53 2003 @@ -1558,7 +1558,9 @@ #define JOURNAL_BUFFER(j,n) ((j)->j_ap_blocks[((j)->j_start + (n)) % JOURNAL_BLOCK_COUNT]) void reiserfs_commit_for_inode(struct inode *) ; +void reiserfs_commit_for_tail(struct inode *) ; void reiserfs_update_inode_transaction(struct inode *) ; +void reiserfs_update_tail_transaction(struct inode *) ; void reiserfs_wait_on_write_block(struct super_block *s) ; void reiserfs_block_writes(struct reiserfs_transaction_handle *th) ; void reiserfs_allow_writes(struct super_block *s) ; diff -Nru a/include/linux/reiserfs_fs_i.h b/include/linux/reiserfs_fs_i.h --- a/include/linux/reiserfs_fs_i.h Mon May 12 18:00:53 2003 +++ b/include/linux/reiserfs_fs_i.h Mon May 12 18:00:53 2003 @@ -53,6 +53,13 @@ ** flushed */ unsigned long i_trans_id ; unsigned long i_trans_index ; + + /* direct io needs to make sure the tail is on disk to avoid + * buffer alias problems. This records the transaction last + * involved in a direct->indirect conversion for this file + */ + unsigned long i_tail_trans_id; + unsigned long i_tail_trans_index; }; #endif --------------020009050906070405080109-- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/