[Bug 201461] ext4 journal stalls write system call

[bugzilla-daemon@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=201461

zhenbianshu@foxmail.com changed:

           What    |Removed                     |Added
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             Status|NEW                         |RESOLVED
         Resolution|---                         |INVALID

--- Comment #6 from zhenbianshu@foxmail.com ---
(In reply to Theodore Tso from comment #5)
> Keep in mind that 3.10 was released over ***five years*** ago.   Quite
> frankly, using a 3.10 kernel borders on malpractice, since it has so many
> unpatched security holes it isn't funny.  If you are talking about a RHEL
> kernel, it has diverged significantly from mainline and whether or not it is
> a security disaster is between you and your Red Hat support contract.  :-)
> 
> My comments apply mainly to the the upstream development kernel, but to
> answer your questions:
> 
> No, in 3.10, generic_writepages() does not call ext4_da_writepages().   And
> ext4_da_writepages roughly corresponds to what ext4_writepages() in
> non-obsolete kernels.
> 
> A huge number of things have changed between 3.10 and more modern kernels,
> including many performance enhancements.   So some of the details have
> changed.

I got it, thank you very much!

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