Re: __vmalloc() vs. GFP_NOIO/GFP_NOFS

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Mon, Jan 04, 2016 at 07:12:33AM +1100, Dave Chinner wrote:

> That'd be a nice start, though it doesn't address callers of
> vm_map_ram() which also has hard-coded GFP_KERNEL allocation masks
> for various allocations.

... all 3 of them, that is - XFS, android/ion/ion_heap.c and
v4l2-core.  5 call sites total.  Adding a gfp_t argument to those
shouldn't be an issue...

BTW, far scarier one is not GFP_NOFS or GFP_IO - there's a weird
caller passing GFP_ATOMIC to __vmalloc(), for no reason I can guess.

_That_ really couldn't be handled without passing gfp_t to page allocation
primitives, but I very much doubt that it's needed there at all; it's in
alloc_large_system_hash() and I really cannot imagine a situation when
it would be used in e.g. a nonblocking context.

Folks, what is that one for?
--
To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Linux Ext4 Filesystem]     [Union Filesystem]     [Filesystem Testing]     [Ceph Users]     [Ecryptfs]     [AutoFS]     [Kernel Newbies]     [Share Photos]     [Security]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux Cachefs]     [Reiser Filesystem]     [Linux RAID]     [Samba]     [Device Mapper]     [CEPH Development]
  Powered by Linux