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* [lkp] [+547 bytes kernel size regression] [i386-tinyconfig] [929bad88e0] splice: Fix O_DIRECT file read splice to avoid reversion of ITER_PIPE
@ 2023-02-13 16:22 kernel test robot
  2023-02-13 16:28 ` David Howells
  0 siblings, 1 reply; 2+ messages in thread
From: kernel test robot @ 2023-02-13 16:22 UTC (permalink / raw)
  To: David Howells; +Cc: Josh Triplett, lkp, oe-kbuild-all


FYI, we noticed a +547 bytes kernel size regression due to commit:

commit: 929bad88e01fe3741170eb3c2faace578fae1ef6 (splice: Fix O_DIRECT file read splice to avoid reversion of ITER_PIPE)
https://github.com/ammarfaizi2/linux-block dhowells/linux-fs/iov-extract-3


Details as below (size data is obtained by `nm --size-sort vmlinux`):

4ec5183e: Linux 6.2-rc7
929bad88: splice: Fix O_DIRECT file read splice to avoid reversion of ITER_PIPE

+--------------------------------------+----------+----------+-------+
|                symbol                | 4ec5183e | 929bad88 | delta |
+--------------------------------------+----------+----------+-------+
| nm.t.generic_file_direct_splice_read | 0        | 515      | 515   |
| bzImage                              | 495936   | 496288   | 352   |
| nm.T.generic_file_splice_read        | 169      | 200      | 31    |
| nm.D.linux_banner                    | 165      | 166      | 1     |
+--------------------------------------+----------+----------+-------+



Thanks


^ permalink raw reply	[flat|nested] 2+ messages in thread

* Re: [lkp] [+547 bytes kernel size regression] [i386-tinyconfig] [929bad88e0] splice: Fix O_DIRECT file read splice to avoid reversion of ITER_PIPE
  2023-02-13 16:22 [lkp] [+547 bytes kernel size regression] [i386-tinyconfig] [929bad88e0] splice: Fix O_DIRECT file read splice to avoid reversion of ITER_PIPE kernel test robot
@ 2023-02-13 16:28 ` David Howells
  0 siblings, 0 replies; 2+ messages in thread
From: David Howells @ 2023-02-13 16:28 UTC (permalink / raw)
  To: kernel test robot; +Cc: dhowells, Josh Triplett, oe-kbuild-all

kernel test robot <lkp@intel.com> wrote:

> FYI, we noticed a +547 bytes kernel size regression due to commit:
> 
> commit: 929bad88e01fe3741170eb3c2faace578fae1ef6 (splice: Fix O_DIRECT file read splice to avoid reversion of ITER_PIPE)
> https://github.com/ammarfaizi2/linux-block dhowells/linux-fs/iov-extract-3
> 
> 
> Details as below (size data is obtained by `nm --size-sort vmlinux`):
> 
> 4ec5183e: Linux 6.2-rc7
> 929bad88: splice: Fix O_DIRECT file read splice to avoid reversion of ITER_PIPE
> 
> +--------------------------------------+----------+----------+-------+
> |                symbol                | 4ec5183e | 929bad88 | delta |
> +--------------------------------------+----------+----------+-------+
> | nm.t.generic_file_direct_splice_read | 0        | 515      | 515   |
> | bzImage                              | 495936   | 496288   | 352   |
> | nm.T.generic_file_splice_read        | 169      | 200      | 31    |
> | nm.D.linux_banner                    | 165      | 166      | 1     |
> +--------------------------------------+----------+----------+-------+

How does 82cf0207bed44feb0b3b8b17a4c351fdde34a97b to v6.2-rc7?  That's the
conclusion of the ITER_PIPE-removal.

David


^ permalink raw reply	[flat|nested] 2+ messages in thread

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2023-02-13 16:22 [lkp] [+547 bytes kernel size regression] [i386-tinyconfig] [929bad88e0] splice: Fix O_DIRECT file read splice to avoid reversion of ITER_PIPE kernel test robot
2023-02-13 16:28 ` David Howells

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