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2b3933b1e0
Introduce the capability to dynamically configure the max pages limit (FUSE_MAX_MAX_PAGES) through a sysctl. This allows system administrators to dynamically set the maximum number of pages that can be used for servicing requests in fuse. Previously, this is gated by FUSE_MAX_MAX_PAGES which is statically set to 256 pages. One result of this is that the buffer size for a write request is limited to 1 MiB on a 4k-page system. The default value for this sysctl is the original limit (256 pages). $ sysctl -a | grep max_pages_limit fs.fuse.max_pages_limit = 256 $ sysctl -n fs.fuse.max_pages_limit 256 $ echo 1024 | sudo tee /proc/sys/fs/fuse/max_pages_limit 1024 $ sysctl -n fs.fuse.max_pages_limit 1024 $ echo 65536 | sudo tee /proc/sys/fs/fuse/max_pages_limit tee: /proc/sys/fs/fuse/max_pages_limit: Invalid argument $ echo 0 | sudo tee /proc/sys/fs/fuse/max_pages_limit tee: /proc/sys/fs/fuse/max_pages_limit: Invalid argument $ echo 65535 | sudo tee /proc/sys/fs/fuse/max_pages_limit 65535 $ sysctl -n fs.fuse.max_pages_limit 65535 Signed-off-by: Joanne Koong <joannelkoong@gmail.com> Reviewed-by: Josef Bacik <josef@toxicpanda.com> Reviewed-by: Sweet Tea Dorminy <sweettea-kernel@dorminy.me> Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
20 lines
470 B
Makefile
20 lines
470 B
Makefile
# SPDX-License-Identifier: GPL-2.0-only
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#
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# Makefile for the FUSE filesystem.
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#
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# Needed for trace events
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ccflags-y = -I$(src)
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obj-$(CONFIG_FUSE_FS) += fuse.o
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obj-$(CONFIG_CUSE) += cuse.o
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obj-$(CONFIG_VIRTIO_FS) += virtiofs.o
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fuse-y := dev.o dir.o file.o inode.o control.o xattr.o acl.o readdir.o ioctl.o
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fuse-y += iomode.o
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fuse-$(CONFIG_FUSE_DAX) += dax.o
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fuse-$(CONFIG_FUSE_PASSTHROUGH) += passthrough.o
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fuse-$(CONFIG_SYSCTL) += sysctl.o
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virtiofs-y := virtio_fs.o
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