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| author | Song Liu <songliubraving@fb.com> | 2019-12-01 02:57:19 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-12-01 21:59:09 +0100 |
| commit | 75f360696ce9d8ec8b253452b23b3e24c0689b4b (patch) | |
| tree | 9e2c219ca30d2b4ef0c6f426e653518bb77422f1 /mm/cma.c | |
| parent | mm, thp: do not queue fully unmapped pages for deferred split (diff) | |
| download | linux-75f360696ce9d8ec8b253452b23b3e24c0689b4b.tar.xz linux-75f360696ce9d8ec8b253452b23b3e24c0689b4b.zip | |
mm/thp: flush file for !is_shmem PageDirty() case in collapse_file()
For non-shmem file THPs, khugepaged only collapses read only .text
mapping (VM_DENYWRITE). These pages should not be dirty except the case
where the file hasn't been flushed since first write.
Call filemap_flush() in collapse_file() to accelerate the write back in
such cases.
Link: http://lkml.kernel.org/r/20191106060930.2571389-3-songliubraving@fb.com
Signed-off-by: Song Liu <songliubraving@fb.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: William Kucharski <william.kucharski@oracle.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/cma.c')
0 files changed, 0 insertions, 0 deletions