diff options
| author | Amir Goldstein <amir73il@gmail.com> | 2025-03-12 08:38:51 +0100 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2025-03-13 16:31:00 +0100 |
| commit | 4f4dc3a9378bc2e6bcf331ee9e65a21abf67e7e0 (patch) | |
| tree | b7822cdd780e0c5df68a715ba5011d8ba40ec9e0 | |
| parent | 955fbe0ef19df4197595a98d0906c94025c4beef (diff) | |
Revert "mm: don't allow huge faults for files with pre content watches"
This reverts commit 20bf82a898b65c129af76deb96a1b415d3098a28.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/20250312073852.2123409-6-amir73il@gmail.com
| -rw-r--r-- | mm/memory.c | 19 |
1 files changed, 0 insertions, 19 deletions
diff --git a/mm/memory.c b/mm/memory.c index b9661ccfa64f..fb7b8dc75167 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -76,7 +76,6 @@ #include <linux/ptrace.h> #include <linux/vmalloc.h> #include <linux/sched/sysctl.h> -#include <linux/fsnotify.h> #include <trace/events/kmem.h> @@ -5750,17 +5749,8 @@ out_map: static inline vm_fault_t create_huge_pmd(struct vm_fault *vmf) { struct vm_area_struct *vma = vmf->vma; - if (vma_is_anonymous(vma)) return do_huge_pmd_anonymous_page(vmf); - /* - * Currently we just emit PAGE_SIZE for our fault events, so don't allow - * a huge fault if we have a pre content watch on this file. This would - * be trivial to support, but there would need to be tests to ensure - * this works properly and those don't exist currently. - */ - if (unlikely(FMODE_FSNOTIFY_HSM(vma->vm_file->f_mode))) - return VM_FAULT_FALLBACK; if (vma->vm_ops->huge_fault) return vma->vm_ops->huge_fault(vmf, PMD_ORDER); return VM_FAULT_FALLBACK; @@ -5784,9 +5774,6 @@ static inline vm_fault_t wp_huge_pmd(struct vm_fault *vmf) } if (vma->vm_flags & (VM_SHARED | VM_MAYSHARE)) { - /* See comment in create_huge_pmd. */ - if (unlikely(FMODE_FSNOTIFY_HSM(vma->vm_file->f_mode))) - goto split; if (vma->vm_ops->huge_fault) { ret = vma->vm_ops->huge_fault(vmf, PMD_ORDER); if (!(ret & VM_FAULT_FALLBACK)) @@ -5809,9 +5796,6 @@ static vm_fault_t create_huge_pud(struct vm_fault *vmf) /* No support for anonymous transparent PUD pages yet */ if (vma_is_anonymous(vma)) return VM_FAULT_FALLBACK; - /* See comment in create_huge_pmd. */ - if (unlikely(FMODE_FSNOTIFY_HSM(vma->vm_file->f_mode))) - return VM_FAULT_FALLBACK; if (vma->vm_ops->huge_fault) return vma->vm_ops->huge_fault(vmf, PUD_ORDER); #endif /* CONFIG_TRANSPARENT_HUGEPAGE */ @@ -5829,9 +5813,6 @@ static vm_fault_t wp_huge_pud(struct vm_fault *vmf, pud_t orig_pud) if (vma_is_anonymous(vma)) goto split; if (vma->vm_flags & (VM_SHARED | VM_MAYSHARE)) { - /* See comment in create_huge_pmd. */ - if (unlikely(FMODE_FSNOTIFY_HSM(vma->vm_file->f_mode))) - goto split; if (vma->vm_ops->huge_fault) { ret = vma->vm_ops->huge_fault(vmf, PUD_ORDER); if (!(ret & VM_FAULT_FALLBACK)) |