diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/cifs/file.c | 10 | ||||
| -rw-r--r-- | fs/fuse/dev.c | 2 | ||||
| -rw-r--r-- | fs/hugetlbfs/inode.c | 67 |
3 files changed, 65 insertions, 14 deletions
diff --git a/fs/cifs/file.c b/fs/cifs/file.c index 75ddce8ef456..17a4f49c34f5 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -4162,7 +4162,7 @@ cifs_readv_complete(struct work_struct *work) for (i = 0; i < rdata->nr_pages; i++) { struct page *page = rdata->pages[i]; - lru_cache_add_file(page); + lru_cache_add(page); if (rdata->result == 0 || (rdata->result == -EAGAIN && got_bytes)) { @@ -4232,7 +4232,7 @@ readpages_fill_pages(struct TCP_Server_Info *server, * fill them until the writes are flushed. */ zero_user(page, 0, PAGE_SIZE); - lru_cache_add_file(page); + lru_cache_add(page); flush_dcache_page(page); SetPageUptodate(page); unlock_page(page); @@ -4242,7 +4242,7 @@ readpages_fill_pages(struct TCP_Server_Info *server, continue; } else { /* no need to hold page hostage */ - lru_cache_add_file(page); + lru_cache_add(page); unlock_page(page); put_page(page); rdata->pages[i] = NULL; @@ -4437,7 +4437,7 @@ static int cifs_readpages(struct file *file, struct address_space *mapping, /* best to give up if we're out of mem */ list_for_each_entry_safe(page, tpage, &tmplist, lru) { list_del(&page->lru); - lru_cache_add_file(page); + lru_cache_add(page); unlock_page(page); put_page(page); } @@ -4475,7 +4475,7 @@ static int cifs_readpages(struct file *file, struct address_space *mapping, add_credits_and_wake_if(server, &rdata->credits, 0); for (i = 0; i < rdata->nr_pages; i++) { page = rdata->pages[i]; - lru_cache_add_file(page); + lru_cache_add(page); unlock_page(page); put_page(page); } diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c index 4907e3d1f56c..8ccc97356cb5 100644 --- a/fs/fuse/dev.c +++ b/fs/fuse/dev.c @@ -840,7 +840,7 @@ static int fuse_try_move_page(struct fuse_copy_state *cs, struct page **pagep) get_page(newpage); if (!(buf->flags & PIPE_BUF_FLAG_LRU)) - lru_cache_add_file(newpage); + lru_cache_add(newpage); err = 0; spin_lock(&cs->req->waitq.lock); diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c index 991c60c7ffe0..f3420a643b4f 100644 --- a/fs/hugetlbfs/inode.c +++ b/fs/hugetlbfs/inode.c @@ -38,6 +38,7 @@ #include <linux/uio.h> #include <linux/uaccess.h> +#include <linux/sched/mm.h> static const struct super_operations hugetlbfs_ops; static const struct address_space_operations hugetlbfs_aops; @@ -191,13 +192,60 @@ out: #ifndef HAVE_ARCH_HUGETLB_UNMAPPED_AREA static unsigned long +hugetlb_get_unmapped_area_bottomup(struct file *file, unsigned long addr, + unsigned long len, unsigned long pgoff, unsigned long flags) +{ + struct hstate *h = hstate_file(file); + struct vm_unmapped_area_info info; + + info.flags = 0; + info.length = len; + info.low_limit = current->mm->mmap_base; + info.high_limit = TASK_SIZE; + info.align_mask = PAGE_MASK & ~huge_page_mask(h); + info.align_offset = 0; + return vm_unmapped_area(&info); +} + +static unsigned long +hugetlb_get_unmapped_area_topdown(struct file *file, unsigned long addr, + unsigned long len, unsigned long pgoff, unsigned long flags) +{ + struct hstate *h = hstate_file(file); + struct vm_unmapped_area_info info; + + info.flags = VM_UNMAPPED_AREA_TOPDOWN; + info.length = len; + info.low_limit = max(PAGE_SIZE, mmap_min_addr); + info.high_limit = current->mm->mmap_base; + info.align_mask = PAGE_MASK & ~huge_page_mask(h); + info.align_offset = 0; + addr = vm_unmapped_area(&info); + + /* + * A failed mmap() very likely causes application failure, + * so fall back to the bottom-up function here. This scenario + * can happen with large stack limits and large mmap() + * allocations. + */ + if (unlikely(offset_in_page(addr))) { + VM_BUG_ON(addr != -ENOMEM); + info.flags = 0; + info.low_limit = current->mm->mmap_base; + info.high_limit = TASK_SIZE; + addr = vm_unmapped_area(&info); + } + + return addr; +} + +static unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr, unsigned long len, unsigned long pgoff, unsigned long flags) { struct mm_struct *mm = current->mm; struct vm_area_struct *vma; struct hstate *h = hstate_file(file); - struct vm_unmapped_area_info info; if (len & ~huge_page_mask(h)) return -EINVAL; @@ -218,13 +266,16 @@ hugetlb_get_unmapped_area(struct file *file, unsigned long addr, return addr; } - info.flags = 0; - info.length = len; - info.low_limit = TASK_UNMAPPED_BASE; - info.high_limit = TASK_SIZE; - info.align_mask = PAGE_MASK & ~huge_page_mask(h); - info.align_offset = 0; - return vm_unmapped_area(&info); + /* + * Use mm->get_unmapped_area value as a hint to use topdown routine. + * If architectures have special needs, they should define their own + * version of hugetlb_get_unmapped_area. + */ + if (mm->get_unmapped_area == arch_get_unmapped_area_topdown) + return hugetlb_get_unmapped_area_topdown(file, addr, len, + pgoff, flags); + return hugetlb_get_unmapped_area_bottomup(file, addr, len, + pgoff, flags); } #endif |