Re: [Vserver] sendfile in kernel 2.6.16r5 broken ?

From: Herbert Poetzl <herbert_at_13thfloor.at>
Date: Wed 08 Mar 2006 - 17:31:56 GMT
Message-ID: <20060308173156.GB17047@MAIL.13thfloor.at>

On Wed, Mar 08, 2006 at 05:47:13PM +0100, gerardi wrote:
> Yes Apache 2 with sendfile is working.

okay, will be part of the next -rc* release, thanks
for reporting and testing!

best,
Herbert

> Björn Steinbrink schrieb:
>
> >On 2006.03.08 15:18:06 +0100, gerardi wrote:
> >
> >>Herbert Poetzl schrieb:
> >>
> >>>On Tue, Mar 07, 2006 at 05:37:11PM +0100, gerardi wrote:
> >>>
> >>>
> >>>>Hello everyone,
> >>>>
> >>>>Is the sendfile kernel option broken in 2.6.16rc5 or only together
> >>>>with vserver ?
> >>>>
> >>>>Wenn I am running kernel 2.6.16rc5 with the vserver patch
> >>>>vs2.1.1-rc10 I have to deaktivate sendfile in Apache because it is
> >>>>broken.
> >>>>
> >>>>
> >>>this sounds like a kernel bug, did you test with mainline
> >>>2.6.16-rc5 if it 'works' there? if so, please let me know
> >>>how it fails for you, as it then can be considered a bug
> >>>in the vserver code, which we'd like to fix asap ...
> >>>
> >>Ok I verified it. plain 2.6.16-rc5 is working but with vserver patch
> >>vs2.1.1-rc10 not.

> >>>>Are their other things to be broken in the dev version ?
> >>>>
> >>>once we gain knowledge of 'broken' things, we try to fix
> >>>them as soon as possible .. so no 'known' broken things
> >>>there ...
> >>>
> >>Nice to hear.
> >
> >Could you try if this fixes the issue?
> >
> >TIA
> >Björn
> >
> >--
> >
> >diff -NurpP --minimal linux-2.6.16-rc5-vs2.1.1-rc10/fs/read_write.c
> >linux-2.6.16-rc5-vs2.1.1-rc10-sendfile/fs/read_write.c
> >--- linux-2.6.16-rc5-vs2.1.1-rc10/fs/read_write.c 2006-03-08
> >16:12:35.000000000 +0100
> >+++ linux-2.6.16-rc5-vs2.1.1-rc10-sendfile/fs/read_write.c 2006-03-08
> >16:22:15.000000000 +0100
> >@@ -657,8 +657,9 @@ ssize_t vfs_sendfile(struct file *out_fi
> > return -ESPIPE;
> >
> > ret = rw_verify_area(FLOCK_VERIFY_READ, in_file, ppos, count);
> >- if (ret)
> >+ if (ret < 0)
> > return ret;
> >+ count = ret;
> >
> > /* verify out_file */
> > out_inode = out_file->f_dentry->d_inode;
> >@@ -668,8 +669,9 @@ ssize_t vfs_sendfile(struct file *out_fi
> > return -EINVAL;
> >
> > ret = rw_verify_area(FLOCK_VERIFY_WRITE, out_file, &out_file->f_pos,
> > count);
> >- if (ret)
> >+ if (ret < 0)
> > return ret;
> >+ count = ret;
> >
> > ret = security_file_permission (out_file, MAY_WRITE);
> > if (ret)
> >_______________________________________________
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> >http://list.linux-vserver.org/mailman/listinfo/vserver
> >
> >
> >
>
> --
>
>
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Received on Wed Mar 8 17:32:25 2006

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