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| author | Mike Rapoport <rppt@linux.vnet.ibm.com> | 2017-09-07 02:22:56 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-09-07 03:27:28 +0300 |
| commit | b1cc94ab2f2ba31fcb2c59df0b9cf03f6d720553 (patch) | |
| tree | 3894b1c311654938ea6525af4eb975c695e1966b /lib/.gitignore | |
| parent | fe490cc0fe9e6ee48cc48bb5dc463bc5f0f1428f (diff) | |
| download | linux-b1cc94ab2f2ba31fcb2c59df0b9cf03f6d720553.tar.xz | |
shmem: shmem_charge: verify max_block is not exceeded before inode update
Patch series "userfaultfd: enable zeropage support for shmem".
These patches enable support for UFFDIO_ZEROPAGE for shared memory.
The first two patches are not strictly related to userfaultfd, they are
just minor refactoring to reduce amount of code duplication.
This patch (of 7):
Currently we update inode and shmem_inode_info before verifying that
used_blocks will not exceed max_blocks. In case it will, we undo the
update. Let's switch the order and move the verification of the blocks
count before the inode and shmem_inode_info update.
Link: http://lkml.kernel.org/r/1497939652-16528-2-git-send-email-rppt@linux.vnet.ibm.com
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Hillf Danton <hillf.zj@alibaba-inc.com>
Cc: Pavel Emelyanov <xemul@virtuozzo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib/.gitignore')
0 files changed, 0 insertions, 0 deletions