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31023cd664
In order to test the preload code, it is necessary to fail GFP_ATOMIC allocations, which requires defining GFP_KERNEL and GFP_ATOMIC properly. Remove the obsolete __GFP_WAIT and copy the definitions of the __GFP flags which are used from the kernel include files. We also need the real definition of gfpflags_allow_blocking() to persuade the radix tree to actually use its preallocated nodes. Link: http://lkml.kernel.org/r/1480369871-5271-38-git-send-email-mawilcox@linuxonhyperv.com Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Tested-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Konstantin Khlebnikov <koct9i@gmail.com> Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Cc: Matthew Wilcox <mawilcox@microsoft.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
27 lines
688 B
C
27 lines
688 B
C
#ifndef _GFP_H
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#define _GFP_H
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#define __GFP_BITS_SHIFT 26
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#define __GFP_BITS_MASK ((gfp_t)((1 << __GFP_BITS_SHIFT) - 1))
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#define __GFP_HIGH 0x20u
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#define __GFP_IO 0x40u
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#define __GFP_FS 0x80u
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#define __GFP_NOWARN 0x200u
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#define __GFP_ATOMIC 0x80000u
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#define __GFP_ACCOUNT 0x100000u
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#define __GFP_DIRECT_RECLAIM 0x400000u
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#define __GFP_KSWAPD_RECLAIM 0x2000000u
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#define __GFP_RECLAIM (__GFP_DIRECT_RECLAIM|__GFP_KSWAPD_RECLAIM)
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#define GFP_ATOMIC (__GFP_HIGH|__GFP_ATOMIC|__GFP_KSWAPD_RECLAIM)
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#define GFP_KERNEL (__GFP_RECLAIM | __GFP_IO | __GFP_FS)
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static inline bool gfpflags_allow_blocking(const gfp_t gfp_flags)
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{
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return !!(gfp_flags & __GFP_DIRECT_RECLAIM);
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}
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#endif
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