diff options
| author | Joanne Koong <joannelkoong@gmail.com> | 2024-09-23 10:13:11 -0700 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2024-10-25 17:05:49 +0200 |
| commit | 2b3933b1e0a0a4b758fbc164bb31db0c113a7e2c (patch) | |
| tree | 476333e1f6bfb488c3e04ec6eebd92875ffd3fb7 /fs/fuse/Makefile | |
| parent | d34a5575e6d2380cc375d2b4650d385a859e67bc (diff) | |
| download | lwn-2b3933b1e0a0a4b758fbc164bb31db0c113a7e2c.tar.gz lwn-2b3933b1e0a0a4b758fbc164bb31db0c113a7e2c.zip | |
fuse: enable dynamic configuration of fuse max pages limit (FUSE_MAX_MAX_PAGES)
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>
Diffstat (limited to 'fs/fuse/Makefile')
| -rw-r--r-- | fs/fuse/Makefile | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/fuse/Makefile b/fs/fuse/Makefile index ce0ff7a9007b..2c372180d631 100644 --- a/fs/fuse/Makefile +++ b/fs/fuse/Makefile @@ -14,5 +14,6 @@ fuse-y := dev.o dir.o file.o inode.o control.o xattr.o acl.o readdir.o ioctl.o fuse-y += iomode.o fuse-$(CONFIG_FUSE_DAX) += dax.o fuse-$(CONFIG_FUSE_PASSTHROUGH) += passthrough.o +fuse-$(CONFIG_SYSCTL) += sysctl.o virtiofs-y := virtio_fs.o |