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Commit f1820361 authored by Kirill A. Shutemov's avatar Kirill A. Shutemov Committed by Linus Torvalds
Browse files

mm: implement ->map_pages for page cache 



filemap_map_pages() is generic implementation of ->map_pages() for
filesystems who uses page cache.

It should be safe to use filemap_map_pages() for ->map_pages() if
filesystem use filemap_fault() for ->fault().

Signed-off-by: default avatarKirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Rik van Riel <riel@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Matthew Wilcox <matthew.r.wilcox@intel.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Ning Qu <quning@gmail.com>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 8c6e50b0

fs/9p/vfs_file.c

+2 −0
Original line number Diff line number Diff line
@@ -832,6 +832,7 @@ static void v9fs_mmap_vm_close(struct vm_area_struct *vma) 


static const struct vm_operations_struct v9fs_file_vm_ops = {

	.fault = filemap_fault,

	.map_pages = filemap_map_pages,

	.page_mkwrite = v9fs_vm_page_mkwrite,

	.remap_pages = generic_file_remap_pages,

};
@@ -839,6 +840,7 @@ static const struct vm_operations_struct v9fs_file_vm_ops = { 
static const struct vm_operations_struct v9fs_mmap_file_vm_ops = {

	.close = v9fs_mmap_vm_close,

	.fault = filemap_fault,

	.map_pages = filemap_map_pages,

	.page_mkwrite = v9fs_vm_page_mkwrite,

	.remap_pages = generic_file_remap_pages,

};

fs/btrfs/file.c

+1 −0
Original line number Diff line number Diff line
@@ -2025,6 +2025,7 @@ int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) 


static const struct vm_operations_struct btrfs_file_vm_ops = {

	.fault		= filemap_fault,

	.map_pages	= filemap_map_pages,

	.page_mkwrite	= btrfs_page_mkwrite,

	.remap_pages	= generic_file_remap_pages,

};

fs/cifs/file.c

+1 −0
Original line number Diff line number Diff line
@@ -3113,6 +3113,7 @@ cifs_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf) 


static struct vm_operations_struct cifs_file_vm_ops = {

	.fault = filemap_fault,

	.map_pages = filemap_map_pages,

	.page_mkwrite = cifs_page_mkwrite,

	.remap_pages = generic_file_remap_pages,

};

fs/ext4/file.c

+1 −0
Original line number Diff line number Diff line
@@ -200,6 +200,7 @@ ext4_file_write(struct kiocb *iocb, const struct iovec *iov, 


static const struct vm_operations_struct ext4_file_vm_ops = {

	.fault		= filemap_fault,

	.map_pages	= filemap_map_pages,

	.page_mkwrite   = ext4_page_mkwrite,

	.remap_pages	= generic_file_remap_pages,

};

fs/f2fs/file.c

+1 −0
Original line number Diff line number Diff line
@@ -84,6 +84,7 @@ static int f2fs_vm_page_mkwrite(struct vm_area_struct *vma, 


static const struct vm_operations_struct f2fs_file_vm_ops = {

	.fault		= filemap_fault,

	.map_pages	= filemap_map_pages,

	.page_mkwrite	= f2fs_vm_page_mkwrite,

	.remap_pages	= generic_file_remap_pages,

};