linux-kernel - Re: [PATCH 2/2 v2] udf : add readpages support for udf.

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

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <CAKYAXd-fu3aLAm3nPHrwsR_9LLa8Aeg94cpaY38bXZ1a5YC4kA@mail.gmail.com>
Date:	Thu, 6 Oct 2011 09:33:36 +0900
From:	NamJae Jeon <linkinjeon@...il.com>
To:	Jan Kara <jack@...e.cz>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2 v2] udf : add readpages support for udf.

2011/10/6 Jan Kara <jack@...e.cz>:
> On Mon 03-10-11 14:02:59, Namjae Jeon wrote:
>> Using mpage_readpages instead of multiple calls to udf_readpage to reduce the CPU utilization and make performance higher.
>  Thanks. I've merged this patch.
Hi. Jan.
this patch is created by the second from [PATCH 1/2 v3] udf : enable
error print in udf_read_tagged().
So if hunk or problem happen, plz inform me it.
Thanks a lot.
>
>                                                                        Honza
>>
>> Signed-off-by: Namjae Jeon <linkinjeon@...il.com>
>> ---
>>  fs/udf/inode.c |   10 +++++++++-
>>  1 files changed, 9 insertions(+), 1 deletions(-)
>>
>> diff --git a/fs/udf/inode.c b/fs/udf/inode.c
>> index 58665ce..81f9ce1 100644
>> --- a/fs/udf/inode.c
>> +++ b/fs/udf/inode.c
>> @@ -37,6 +37,7 @@
>>  #include <linux/writeback.h>
>>  #include <linux/slab.h>
>>  #include <linux/crc-itu-t.h>
>> +#include <linux/mpage.h>
>>
>>  #include "udf_i.h"
>>  #include "udf_sb.h"
>> @@ -104,7 +105,13 @@ static int udf_writepage(struct page *page, struct writeback_control *wbc)
>>
>>  static int udf_readpage(struct file *file, struct page *page)
>>  {
>> -     return block_read_full_page(page, udf_get_block);
>> +     return mpage_readpage(page, udf_get_block);
>> +}
>> +
>> +static int udf_readpages(struct file *file, struct address_space *mapping,
>> +                     struct list_head *pages, unsigned nr_pages)
>> +{
>> +     return mpage_readpages(mapping, pages, nr_pages, udf_get_block);
>>  }
>>
>>  static int udf_write_begin(struct file *file, struct address_space *mapping,
>> @@ -139,6 +146,7 @@ static sector_t udf_bmap(struct address_space *mapping, sector_t block)
>>
>>  const struct address_space_operations udf_aops = {
>>       .readpage       = udf_readpage,
>> +     .readpages      = udf_readpages,
>>       .writepage      = udf_writepage,
>>       .write_begin            = udf_write_begin,
>>       .write_end              = generic_write_end,
>> --
>> 1.7.4.4
>>
> --
> Jan Kara <jack@...e.cz>
> SUSE Labs, CR
>
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/