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    SubjectRe: [PATCH 0/3] vmalloc enhancements
    Date
    On Mon, Feb 25, 2019 at 12:30:34PM -0800, Roman Gushchin wrote:
    > The patchset contains few changes to the vmalloc code, which are
    > leading to some performance gains and code simplification.
    >
    > Also, it exports a number of pages, used by vmalloc(),
    > in /proc/meminfo.
    >
    > Patch (1) removes some redundancy on __vunmap().
    > Patch (2) separates memory allocation and data initialization
    > in alloc_vmap_area()
    > Patch (3) adds vmalloc counter to /proc/meminfo.
    >
    > v3->v2:
    > - switched back to atomic after more accurate perf measurements:
    > no visible perf difference
    > - added perf stacktraces in commmit message of (1)
    >
    > v2->v1:
    > - rebased on top of current mm tree
    > - switch from atomic to percpu vmalloc page counter
    >
    > RFC->v1:
    > - removed bogus empty lines (suggested by Matthew Wilcox)
    > - made nr_vmalloc_pages static (suggested by Matthew Wilcox)
    > - dropped patch 3 from RFC patchset, will post later with
    > some other changes
    > - dropped RFC
    >
    > Roman Gushchin (3):
    > mm: refactor __vunmap() to avoid duplicated call to find_vm_area()
    > mm: separate memory allocation and actual work in alloc_vmap_area()
    > mm: show number of vmalloc pages in /proc/meminfo
    >
    > fs/proc/meminfo.c | 2 +-
    > include/linux/vmalloc.h | 2 +
    > mm/vmalloc.c | 107 ++++++++++++++++++++++++++--------------
    > 3 files changed, 73 insertions(+), 38 deletions(-)
    >
    > --
    > 2.20.1
    >

    Ping. Any comments/suggestions/objections?

    Thanks!

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