lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Thu, 25 Oct 2012 21:45:51 +0200 From: Jan Kara <jack@...e.cz> To: Naoya Horiguchi <n-horiguchi@...jp.nec.com> Cc: Andi Kleen <andi.kleen@...el.com>, Tony Luck <tony.luck@...el.com>, Wu Fengguang <fengguang.wu@...el.com>, Andrew Morton <akpm@...ux-foundation.org>, Jan Kara <jack@...e.cz>, Jun'ichi Nomura <j-nomura@...jp.nec.com>, Akira Fujita <a-fujita@...jp.nec.com>, linux-kernel@...r.kernel.org, linux-mm@...ck.org, linux-ext4@...r.kernel.org Subject: Re: [PATCH 3/3] ext3: introduce ext3_error_remove_page On Thu 25-10-12 11:12:49, Naoya Horiguchi wrote: > What I suggested in the previous patch for ext4 is ditto with ext3, > so do the same thing for ext3. > > Signed-off-by: Naoya Horiguchi <n-horiguchi@...jp.nec.com> > --- > fs/ext3/inode.c | 33 ++++++++++++++++++++++++++++++--- > 1 file changed, 30 insertions(+), 3 deletions(-) > > diff --git v3.7-rc2.orig/fs/ext3/inode.c v3.7-rc2/fs/ext3/inode.c > index 7e87e37..7f708bf 100644 > --- v3.7-rc2.orig/fs/ext3/inode.c > +++ v3.7-rc2/fs/ext3/inode.c > @@ -1967,6 +1967,33 @@ static int ext3_journalled_set_page_dirty(struct page *page) > return __set_page_dirty_nobuffers(page); > } > > +static int ext3_error_remove_page(struct address_space *mapping, > + struct page *page) > +{ > + struct inode *inode = mapping->host; > + struct buffer_head *bh, *head; > + ext3_fsblk_t block = 0; > + > + if (!PageDirty(page) || !page_has_buffers(page)) > + goto remove_page; > + > + /* Lost data. Handle as critical fs error. */ > + bh = head = page_buffers(page); > + do { > + if (buffer_dirty(bh)) { For ext3, you should check that buffer_mapped() is set because we can have dirty and unmapped buffers. Otherwise the patch looks OK. > + block = bh->b_blocknr; > + ext3_error(inode->i_sb, "ext3_error_remove_page", > + "inode #%lu: block %lu: " > + "Removing dirty pagecache page", > + inode->i_ino, block); > + } > + bh = bh->b_this_page; > + } while (bh != head); > + > +remove_page: > + return generic_error_remove_page(mapping, page); > +} > + > static const struct address_space_operations ext3_ordered_aops = { > .readpage = ext3_readpage, > .readpages = ext3_readpages, > @@ -1979,7 +2006,7 @@ static const struct address_space_operations ext3_ordered_aops = { > .direct_IO = ext3_direct_IO, > .migratepage = buffer_migrate_page, > .is_partially_uptodate = block_is_partially_uptodate, > - .error_remove_page = generic_error_remove_page, > + .error_remove_page = ext3_error_remove_page, > }; > > static const struct address_space_operations ext3_writeback_aops = { > @@ -1994,7 +2021,7 @@ static const struct address_space_operations ext3_writeback_aops = { > .direct_IO = ext3_direct_IO, > .migratepage = buffer_migrate_page, > .is_partially_uptodate = block_is_partially_uptodate, > - .error_remove_page = generic_error_remove_page, > + .error_remove_page = ext3_error_remove_page, > }; > > static const struct address_space_operations ext3_journalled_aops = { > @@ -2008,7 +2035,7 @@ static const struct address_space_operations ext3_journalled_aops = { > .invalidatepage = ext3_invalidatepage, > .releasepage = ext3_releasepage, > .is_partially_uptodate = block_is_partially_uptodate, > - .error_remove_page = generic_error_remove_page, > + .error_remove_page = ext3_error_remove_page, > }; > > void ext3_set_aops(struct inode *inode) Honza -- Jan Kara <jack@...e.cz> SUSE Labs, CR -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists