| #ifndef __BACKPORT_LINUX_SHMEM_FS_H |
| #define __BACKPORT_LINUX_SHMEM_FS_H |
| #include_next <linux/shmem_fs.h> |
| |
| |
| #if LINUX_VERSION_CODE < KERNEL_VERSION(3,0,0) |
| /* This pulls-in a lot of non-exported symbol backports |
| * on kernels older than 2.6.32. There's no harm for not |
| * making this available on kernels < 2.6.32. */ |
| #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32)) |
| #include <linux/pagemap.h> |
| /* This backports the 2nd part of: |
| * |
| * commit d9d90e5eb70e09903dadff42099b6c948f814050 |
| * Author: Hugh Dickins <hughd@google.com> |
| * Date: Mon Jun 27 16:18:04 2011 -0700 |
| * |
| * tmpfs: add shmem_read_mapping_page_gfp |
| * |
| * First part is in compat-3.0.c. |
| */ |
| #define shmem_read_mapping_page_gfp LINUX_BACKPORT(shmem_read_mapping_page_gfp) |
| extern struct page *shmem_read_mapping_page_gfp(struct address_space *mapping, |
| pgoff_t index, gfp_t gfp); |
| |
| |
| #define shmem_read_mapping_page LINUX_BACKPORT(shmem_read_mapping_page) |
| static inline struct page *shmem_read_mapping_page( |
| struct address_space *mapping, pgoff_t index) |
| { |
| return shmem_read_mapping_page_gfp(mapping, index, |
| mapping_gfp_mask(mapping)); |
| } |
| #endif |
| #endif |
| |
| #endif /* __BACKPORT_LINUX_SHMEM_FS_H */ |
