diff options
Diffstat (limited to 'mm/shmem.c')
| -rw-r--r-- | mm/shmem.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/mm/shmem.c b/mm/shmem.c index d3f0c94f6836..bc5c156ef470 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -1739,6 +1739,7 @@ static int shmem_swapin_folio(struct inode *inode, pgoff_t index, struct address_space *mapping = inode->i_mapping; struct shmem_inode_info *info = SHMEM_I(inode); struct mm_struct *charge_mm = vma ? vma->vm_mm : NULL; + struct swap_info_struct *si; struct folio *folio = NULL; swp_entry_t swap; int error; @@ -1750,6 +1751,14 @@ static int shmem_swapin_folio(struct inode *inode, pgoff_t index, if (is_swapin_error_entry(swap)) return -EIO; + si = get_swap_device(swap); + if (!si) { + if (!shmem_confirm_swap(mapping, index, swap)) + return -EEXIST; + else + return -EINVAL; + } + /* Look it up and read it in.. */ folio = swap_cache_get_folio(swap, NULL, 0); if (!folio) { @@ -1810,6 +1819,7 @@ static int shmem_swapin_folio(struct inode *inode, pgoff_t index, delete_from_swap_cache(folio); folio_mark_dirty(folio); swap_free(swap); + put_swap_device(si); *foliop = folio; return 0; @@ -1823,6 +1833,7 @@ unlock: folio_unlock(folio); folio_put(folio); } + put_swap_device(si); return error; } |