Re: [PATCH for-5.1] file-posix: Mitigate file fragmentation with extent size hints

2020-07-13 Thread Kevin Wolf
Am 13.07.2020 um 15:12 hat Kevin Wolf geschrieben: > Am 13.07.2020 um 11:08 hat Max Reitz geschrieben: > > On 10.07.20 18:12, Max Reitz wrote: > > > On 07.07.20 18:17, Kevin Wolf wrote: > > >> Am 07.07.2020 um 16:23 hat Kevin Wolf geschrieben: > > >>> Espeically when O_DIRECT is used with image fil

Re: [PATCH for-5.1] file-posix: Mitigate file fragmentation with extent size hints

2020-07-13 Thread Kevin Wolf
Am 13.07.2020 um 11:08 hat Max Reitz geschrieben: > On 10.07.20 18:12, Max Reitz wrote: > > On 07.07.20 18:17, Kevin Wolf wrote: > >> Am 07.07.2020 um 16:23 hat Kevin Wolf geschrieben: > >>> Espeically when O_DIRECT is used with image files so that the page cache > >>> indirection can't cause a mer

Re: [PATCH for-5.1] file-posix: Mitigate file fragmentation with extent size hints

2020-07-13 Thread Max Reitz
On 10.07.20 18:12, Max Reitz wrote: > On 07.07.20 18:17, Kevin Wolf wrote: >> Am 07.07.2020 um 16:23 hat Kevin Wolf geschrieben: >>> Espeically when O_DIRECT is used with image files so that the page cache >>> indirection can't cause a merge of allocating requests, the file will >>> fragment on the

Re: [PATCH for-5.1] file-posix: Mitigate file fragmentation with extent size hints

2020-07-10 Thread Max Reitz
On 07.07.20 18:17, Kevin Wolf wrote: > Am 07.07.2020 um 16:23 hat Kevin Wolf geschrieben: >> Espeically when O_DIRECT is used with image files so that the page cache >> indirection can't cause a merge of allocating requests, the file will >> fragment on the file system layer, with a potentially ver

Re: [PATCH for-5.1] file-posix: Mitigate file fragmentation with extent size hints

2020-07-07 Thread Kevin Wolf
Am 07.07.2020 um 16:23 hat Kevin Wolf geschrieben: > Espeically when O_DIRECT is used with image files so that the page cache > indirection can't cause a merge of allocating requests, the file will > fragment on the file system layer, with a potentially very small > fragment size (this depends on t

Re: [PATCH for-5.1] file-posix: Mitigate file fragmentation with extent size hints

2020-07-07 Thread Eric Blake
On 7/7/20 9:23 AM, Kevin Wolf wrote: Espeically when O_DIRECT is used with image files so that the page cache Especially indirection can't cause a merge of allocating requests, the file will fragment on the file system layer, with a potentially very small fragment size (this depends on the re

[PATCH for-5.1] file-posix: Mitigate file fragmentation with extent size hints

2020-07-07 Thread Kevin Wolf
Espeically when O_DIRECT is used with image files so that the page cache indirection can't cause a merge of allocating requests, the file will fragment on the file system layer, with a potentially very small fragment size (this depends on the requests the guest sent). On Linux, fragmentation can b