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Allow 16M zio buffers in user space

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Only restrict the maximum zio alloc size to 32-bit kernel space.
The same virtual address space limitations don't apply to user
space.  This resolves a memory allocation failure in raidz_test
where it expects to be able to exercises all valid zio sizes.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
This commit is contained in:
Brian Behlendorf 2016-11-05 04:54:48 +00:00
parent 61f9b2cd12
commit 34328f3cf8
1 changed files with 1 additions and 1 deletions
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2
module/zfs/zio.c
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@ -131,7 +131,7 @@ zio_init(void)
size_t align = 0;
size_t cflags = (size > zio_buf_debug_limit) ? KMC_NODEBUG : 0;
#ifdef _ILP32
#if defined(_ILP32) && defined(_KERNEL)
/*
* Cache size limited to 1M on 32-bit platforms until ARC
* buffers no longer require virtual address space.