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| author | kib <kib@FreeBSD.org> | 2012-11-14 20:01:40 +0000 |
|---|---|---|
| committer | kib <kib@FreeBSD.org> | 2012-11-14 20:01:40 +0000 |
| commit | e8ae50d444598a029ceb39f734aeda3b5ee77521 (patch) | |
| tree | fe0b937a1c55b958f76306b0964a8d88a0f20367 /sys/kern/subr_disk.c | |
| parent | 32941467f0eddd9305a7be708a05bdc2b91beb3a (diff) | |
| download | FreeBSD-src-e8ae50d444598a029ceb39f734aeda3b5ee77521.zip FreeBSD-src-e8ae50d444598a029ceb39f734aeda3b5ee77521.tar.gz | |
Flip the semantic of M_NOWAIT to only require the allocation to not
sleep, and perform the page allocations with VM_ALLOC_SYSTEM
class. Previously, the allocation was also allowed to completely drain
the reserve of the free pages, being translated to VM_ALLOC_INTERRUPT
request class for vm_page_alloc() and similar functions.
Allow the caller of malloc* to request the 'deep drain' semantic by
providing M_USE_RESERVE flag, now translated to VM_ALLOC_INTERRUPT
class. Previously, it resulted in less aggressive VM_ALLOC_SYSTEM
allocation class.
Centralize the translation of the M_* malloc(9) flags in the single
inline function malloc2vm_flags().
Discussion started by: "Sears, Steven" <Steven.Sears@netapp.com>
Reviewed by: alc, mdf (previous version)
Tested by: pho (previous version)
MFC after: 2 weeks
Diffstat (limited to 'sys/kern/subr_disk.c')
0 files changed, 0 insertions, 0 deletions
