13a5829feSDavid Howells# SPDX-License-Identifier: GPL-2.0-only 23a5829feSDavid Howells 33a5829feSDavid Howellsconfig NETFS_SUPPORT 43a5829feSDavid Howells tristate "Support for network filesystem high-level I/O" 53a5829feSDavid Howells help 63a5829feSDavid Howells This option enables support for network filesystems, including 73a5829feSDavid Howells helpers for high-level buffered I/O, abstracting out read 83a5829feSDavid Howells segmentation, local caching and transparent huge page support. 9*289af54cSDavid Howells 10*289af54cSDavid Howellsconfig NETFS_STATS 11*289af54cSDavid Howells bool "Gather statistical information on local caching" 12*289af54cSDavid Howells depends on NETFS_SUPPORT && PROC_FS 13*289af54cSDavid Howells help 14*289af54cSDavid Howells This option causes statistical information to be gathered on local 15*289af54cSDavid Howells caching and exported through file: 16*289af54cSDavid Howells 17*289af54cSDavid Howells /proc/fs/fscache/stats 18*289af54cSDavid Howells 19*289af54cSDavid Howells The gathering of statistics adds a certain amount of overhead to 20*289af54cSDavid Howells execution as there are a quite a few stats gathered, and on a 21*289af54cSDavid Howells multi-CPU system these may be on cachelines that keep bouncing 22*289af54cSDavid Howells between CPUs. On the other hand, the stats are very useful for 23*289af54cSDavid Howells debugging purposes. Saying 'Y' here is recommended. 24