diff options
| author | Brian Behlendorf <[email protected]> | 2021-02-24 09:57:18 -0800 |
|---|---|---|
| committer | GitHub <[email protected]> | 2021-02-24 09:57:18 -0800 |
| commit | 1dfc82a14ed538992f5c37a152995e93ede10469 (patch) | |
| tree | f556c215fedef12cc050067a6d7614cd0ff076ee /module/os/linux/zfs | |
| parent | f01eaed4556623b63c414fee9085ae27d457fe46 (diff) | |
Linux: increase max nvlist_src size
On Linux increase the maximum allowed size of the src nvlist which
can be passed to the /dev/zfs ioctl. Originally, this was set
to a maximum of KMALLOC_MAX_SIZE (4M) because it was kmalloc'd.
Since that time it's been converted to a vmalloc so that's no
longer a hard limit, and it's desirable for `zfs send/recv` to
allow larger nvlists so more snapshots can be sent at once.
Signed-off-by: Brian Behlendorf <[email protected]>
Closes #6572
Closes #11638
Diffstat (limited to 'module/os/linux/zfs')
| -rw-r--r-- | module/os/linux/zfs/zfs_ioctl_os.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/module/os/linux/zfs/zfs_ioctl_os.c b/module/os/linux/zfs/zfs_ioctl_os.c index b88e0497d..6f5cff177 100644 --- a/module/os/linux/zfs/zfs_ioctl_os.c +++ b/module/os/linux/zfs/zfs_ioctl_os.c @@ -209,7 +209,7 @@ zfs_max_nvlist_src_size_os(void) if (zfs_max_nvlist_src_size != 0) return (zfs_max_nvlist_src_size); - return (KMALLOC_MAX_SIZE); + return (MIN(ptob(zfs_totalram_pages) / 4, 128 * 1024 * 1024)); } void |