[redhat] New configs in fs/netfs

Hi,

As part of the ongoing rebase effort, the following configuration options need to be reviewed.

As a reminder, the ARK configuration flow involves moving unreviewed configuration options from the pending directory to the ark directory. In the diff below, options are removed from the pending directory and added to the ark hierarchy. The final options that need to be ACKed are the files that are being added to the ark hierarchy.

If the value for a file that is added should be changed, please reply with a better option.

CONFIG_NETFS_STATS:

This option causes statistical information to be gathered on local caching and exported through file:

   /proc/fs/fscache/stats

The gathering of statistics adds a certain amount of overhead to execution as there are a quite a few stats gathered, and on a multi-CPU system these may be on cachelines that keep bouncing between CPUs. On the other hand, the stats are very useful for debugging purposes. Saying 'Y' here is recommended.

Symbol: NETFS_STATS [=n] Type : bool Defined at fs/netfs/Kconfig:10 Prompt: Gather statistical information on local caching Depends on: NETFS_SUPPORT [=m] && PROC_FS [=y] Location: -> File systems -> Caches -> Support for network filesystem high-level I/O (NETFS_SUPPORT [=m])

---

CONFIG_NETFS_SUPPORT:

This option enables support for network filesystems, including helpers for high-level buffered I/O, abstracting out read segmentation, local caching and transparent huge page support.

Symbol: NETFS_SUPPORT [=m] Type : tristate Defined at fs/netfs/Kconfig:3 Prompt: Support for network filesystem high-level I/O Location: -> File systems -> Caches Selected by [m]:

• FSCACHE [=m] Selected by [n]:
• AFS_FS [=n] && NETWORK_FILESYSTEMS [=y] && INET [=y]

---

Signed-off-by: Fedora Kernel Team kernel-team@fedoraproject.org

added Configuration No CCs labels

added DependenciesOK label

added AcksNeedsReview label

added External Contribution label

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added 4 commits

• 55d3c55e...b24d7be8 - 2 commits from branch os-build
• 0c2e5de9 - [redhat] New configs in fs/netfs
• 98b595a3 - Turn off CONFIG_NETFS_SUPPORT for zfcpdump

Compare with previous version

@esandeen-rh hey, I see David Howells did this work so I guess we want it enabled for ark? I can't find him on GL...

resolved all threads

added 1 commit

• 461308db - [redhat] Enable CONFIG_NETFS_STATS

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I have pushed an extra commit to enable CONFIG_NETFS_STATS.

We'll squash this all down to one commit upon merge.

resolved all threads

Acked-by: David Howells dhowells@redhat.com

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Acked-by: David Howells dhowells@redhat.com

added CodeChangedv3 label

mentioned in commit aecae499

merged