1. 30 Nov, 2017 14 commits
  2. 29 Nov, 2017 2 commits
  3. 27 Nov, 2017 3 commits
    • Linus Torvalds's avatar
      Rename superblock flags (MS_xyz -> SB_xyz) · 1751e8a6
      Linus Torvalds authored
      This is a pure automated search-and-replace of the internal kernel
      superblock flags.
      
      The s_flags are now called SB_*, with the names and the values for the
      moment mirroring the MS_* flags that they're equivalent to.
      
      Note how the MS_xyz flags are the ones passed to the mount system call,
      while the SB_xyz flags are what we then use in sb->s_flags.
      
      The script to do this was:
      
          # places to look in; re security/*: it generally should *not* be
          # touched (that stuff parses mount(2) arguments directly), but
          # there are two places where we really deal with superblock flags.
          FILES="drivers/mtd drivers/staging/lustre fs ipc mm \
                  include/linux/fs.h include/uapi/linux/bfs_fs.h \
                  security/apparmor/apparmorfs.c security/apparmor/include/lib.h"
          # the list of MS_... constants
          SYMS="RDONLY NOSUID NODEV NOEXEC SYNCHRONOUS REMOUNT MANDLOCK \
                DIRSYNC NOATIME NODIRATIME BIND MOVE REC VERBOSE SILENT \
                POSIXACL UNBINDABLE PRIVATE SLAVE SHARED RELATIME KERNMOUNT \
                I_VERSION STRICTATIME LAZYTIME SUBMOUNT NOREMOTELOCK NOSEC BORN \
                ACTIVE NOUSER"
      
          SED_PROG=
          for i in $SYMS; do SED_PROG="$SED_PROG -e s/MS_$i/SB_$i/g"; done
      
          # we want files that contain at least one of MS_...,
          # with fs/namespace.c and fs/pnode.c excluded.
          L=$(for i in $SYMS; do git grep -w -l MS_$i $FILES; done| sort|uniq|grep -v '^fs/namespace.c'|grep -v '^fs/pnode.c')
      
          for f in $L; do sed -i $f $SED_PROG; done
      Requested-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      1751e8a6
    • Kirill A. Shutemov's avatar
      mm, thp: Do not make pmd/pud dirty without a reason · 152e93af
      Kirill A. Shutemov authored
      Currently we make page table entries dirty all the time regardless of
      access type and don't even consider if the mapping is write-protected.
      The reasoning is that we don't really need dirty tracking on THP and
      making the entry dirty upfront may save some time on first write to the
      page.
      
      Unfortunately, such approach may result in false-positive
      can_follow_write_pmd() for huge zero page or read-only shmem file.
      
      Let's only make page dirty only if we about to write to the page anyway
      (as we do for small pages).
      
      I've restructured the code to make entry dirty inside
      maybe_p[mu]d_mkwrite(). It also takes into account if the vma is
      write-protected.
      Signed-off-by: default avatarKirill A. Shutemov <kirill.shutemov@linux.intel.com>
      Acked-by: default avatarMichal Hocko <mhocko@suse.com>
      Cc: Hugh Dickins <hughd@google.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      152e93af
    • Kirill A. Shutemov's avatar
      mm, thp: Do not make page table dirty unconditionally in touch_p[mu]d() · a8f97366
      Kirill A. Shutemov authored
      Currently, we unconditionally make page table dirty in touch_pmd().
      It may result in false-positive can_follow_write_pmd().
      
      We may avoid the situation, if we would only make the page table entry
      dirty if caller asks for write access -- FOLL_WRITE.
      
      The patch also changes touch_pud() in the same way.
      Signed-off-by: default avatarKirill A. Shutemov <kirill.shutemov@linux.intel.com>
      Cc: Michal Hocko <mhocko@suse.com>
      Cc: Hugh Dickins <hughd@google.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      a8f97366
  4. 21 Nov, 2017 1 commit
    • Kees Cook's avatar
      block/laptop_mode: Convert timers to use timer_setup() · bca237a5
      Kees Cook authored
      In preparation for unconditionally passing the struct timer_list pointer to
      all timer callbacks, switch to using the new timer_setup() and from_timer()
      to pass the timer pointer explicitly.
      
      Cc: Jens Axboe <axboe@kernel.dk>
      Cc: Michal Hocko <mhocko@suse.com>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Jan Kara <jack@suse.cz>
      Cc: Johannes Weiner <hannes@cmpxchg.org>
      Cc: Nicholas Piggin <npiggin@gmail.com>
      Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
      Cc: Matthew Wilcox <mawilcox@microsoft.com>
      Cc: Jeff Layton <jlayton@redhat.com>
      Cc: linux-block@vger.kernel.org
      Cc: linux-mm@kvack.org
      Signed-off-by: default avatarKees Cook <keescook@chromium.org>
      bca237a5
  5. 19 Nov, 2017 2 commits
  6. 18 Nov, 2017 8 commits
  7. 16 Nov, 2017 10 commits