On Thu, Jun 20, 2024 at 09:22:42AM +0800, Youling Tang wrote: > From: Youling Tang <[email protected]> > > With CONFIG_READ_ONLY_THP_FOR_FS, the Linux kernel supports using THPs > for read-only mmapped files, such as shared libraries. However, the > kernel makes no attempt to actually align those mappings on 2MB > boundaries, which makes it impossible to use those THPs most of the > time. This issue applies to general file mapping THP as well as > existing setups using CONFIG_READ_ONLY_THP_FOR_FS. This is easily > fixed by using thp_get_unmapped_area for the unmapped_area function > in bcachefs, which is what ext2, ext4, fuse, xfs and btrfs all use. > > Similar to commit b0c582233a85 ("btrfs: fix alignment of VMA for > memory mapped files on THP"). > > Signed-off-by: Youling Tang <[email protected]>
Thanks - applied
