From: Matthew Wilcox <matthew.r.wilcox@intel.com> To: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org Cc: Matthew Wilcox <willy@linux.intel.com> Subject: [PATCH 09/10] ext4: Huge page fault support Date: Fri, 10 Jul 2015 16:29:24 -0400 [thread overview] Message-ID: <1436560165-8943-10-git-send-email-matthew.r.wilcox@intel.com> (raw) In-Reply-To: <1436560165-8943-1-git-send-email-matthew.r.wilcox@intel.com> From: Matthew Wilcox <willy@linux.intel.com> Use DAX to provide support for huge pages. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> --- fs/ext4/file.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/fs/ext4/file.c b/fs/ext4/file.c index 34d814f..ca5302a 100644 --- a/fs/ext4/file.c +++ b/fs/ext4/file.c @@ -210,6 +210,13 @@ static int ext4_dax_fault(struct vm_area_struct *vma, struct vm_fault *vmf) return dax_fault(vma, vmf, ext4_get_block_write, ext4_end_io_unwritten); } +static int ext4_dax_pmd_fault(struct vm_area_struct *vma, unsigned long addr, + pmd_t *pmd, unsigned int flags) +{ + return dax_pmd_fault(vma, addr, pmd, flags, ext4_get_block_write, + ext4_end_io_unwritten); +} + static int ext4_dax_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf) { return dax_mkwrite(vma, vmf, ext4_get_block_write, @@ -218,6 +225,7 @@ static int ext4_dax_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf) static const struct vm_operations_struct ext4_dax_vm_ops = { .fault = ext4_dax_fault, + .pmd_fault = ext4_dax_pmd_fault, .page_mkwrite = ext4_dax_mkwrite, .pfn_mkwrite = dax_pfn_mkwrite, }; @@ -245,7 +253,7 @@ static int ext4_file_mmap(struct file *file, struct vm_area_struct *vma) file_accessed(file); if (IS_DAX(file_inode(file))) { vma->vm_ops = &ext4_dax_vm_ops; - vma->vm_flags |= VM_MIXEDMAP; + vma->vm_flags |= VM_MIXEDMAP | VM_HUGEPAGE; } else { vma->vm_ops = &ext4_file_vm_ops; } -- 2.1.4
WARNING: multiple messages have this Message-ID (diff)
From: Matthew Wilcox <matthew.r.wilcox@intel.com> To: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org Cc: Matthew Wilcox <willy@linux.intel.com> Subject: [PATCH 09/10] ext4: Huge page fault support Date: Fri, 10 Jul 2015 16:29:24 -0400 [thread overview] Message-ID: <1436560165-8943-10-git-send-email-matthew.r.wilcox@intel.com> (raw) In-Reply-To: <1436560165-8943-1-git-send-email-matthew.r.wilcox@intel.com> From: Matthew Wilcox <willy@linux.intel.com> Use DAX to provide support for huge pages. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> --- fs/ext4/file.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/fs/ext4/file.c b/fs/ext4/file.c index 34d814f..ca5302a 100644 --- a/fs/ext4/file.c +++ b/fs/ext4/file.c @@ -210,6 +210,13 @@ static int ext4_dax_fault(struct vm_area_struct *vma, struct vm_fault *vmf) return dax_fault(vma, vmf, ext4_get_block_write, ext4_end_io_unwritten); } +static int ext4_dax_pmd_fault(struct vm_area_struct *vma, unsigned long addr, + pmd_t *pmd, unsigned int flags) +{ + return dax_pmd_fault(vma, addr, pmd, flags, ext4_get_block_write, + ext4_end_io_unwritten); +} + static int ext4_dax_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf) { return dax_mkwrite(vma, vmf, ext4_get_block_write, @@ -218,6 +225,7 @@ static int ext4_dax_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf) static const struct vm_operations_struct ext4_dax_vm_ops = { .fault = ext4_dax_fault, + .pmd_fault = ext4_dax_pmd_fault, .page_mkwrite = ext4_dax_mkwrite, .pfn_mkwrite = dax_pfn_mkwrite, }; @@ -245,7 +253,7 @@ static int ext4_file_mmap(struct file *file, struct vm_area_struct *vma) file_accessed(file); if (IS_DAX(file_inode(file))) { vma->vm_ops = &ext4_dax_vm_ops; - vma->vm_flags |= VM_MIXEDMAP; + vma->vm_flags |= VM_MIXEDMAP | VM_HUGEPAGE; } else { vma->vm_ops = &ext4_file_vm_ops; } -- 2.1.4 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2015-07-10 20:30 UTC|newest] Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-07-10 20:29 [PATCH 00/10] Huge page support for DAX files Matthew Wilcox 2015-07-10 20:29 ` Matthew Wilcox 2015-07-10 20:29 ` [PATCH 01/10] thp: vma_adjust_trans_huge(): adjust file-backed VMA too Matthew Wilcox 2015-07-10 20:29 ` Matthew Wilcox 2015-07-10 20:29 ` [PATCH 02/10] dax: Move DAX-related functions to a new header Matthew Wilcox 2015-07-10 20:29 ` Matthew Wilcox 2015-07-10 20:29 ` [PATCH 03/10] thp: Prepare for DAX huge pages Matthew Wilcox 2015-07-10 20:29 ` Matthew Wilcox 2015-07-19 11:03 ` Kirill A. Shutemov 2015-07-19 11:03 ` Kirill A. Shutemov 2015-07-10 20:29 ` [PATCH 04/10] mm: Add a pmd_fault handler Matthew Wilcox 2015-07-10 20:29 ` Matthew Wilcox 2015-07-10 20:29 ` [PATCH 05/10] mm: Export various functions for the benefit of DAX Matthew Wilcox 2015-07-10 20:29 ` Matthew Wilcox 2015-07-10 20:29 ` [PATCH 06/10] mm: Add vmf_insert_pfn_pmd() Matthew Wilcox 2015-07-10 20:29 ` Matthew Wilcox 2015-07-13 13:23 ` Jeff Moyer 2015-07-13 13:23 ` Jeff Moyer 2015-07-13 15:02 ` Matthew Wilcox 2015-07-13 15:02 ` Matthew Wilcox 2015-07-10 20:29 ` [PATCH 07/10] dax: Add huge page fault support Matthew Wilcox 2015-07-10 20:29 ` Matthew Wilcox 2015-07-13 15:05 ` Jan Kara 2015-07-13 15:05 ` Jan Kara 2015-07-13 15:33 ` Matthew Wilcox 2015-07-13 15:33 ` Matthew Wilcox 2015-07-10 20:29 ` [PATCH 08/10] ext2: Huge " Matthew Wilcox 2015-07-10 20:29 ` Matthew Wilcox 2015-07-10 20:29 ` Matthew Wilcox [this message] 2015-07-10 20:29 ` [PATCH 09/10] ext4: " Matthew Wilcox 2015-07-10 20:29 ` [PATCH 10/10] xfs: " Matthew Wilcox 2015-07-10 20:29 ` Matthew Wilcox
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