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| author | Nick Piggin <npiggin@suse.de> | 2009-04-01 00:23:21 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-04-01 17:59:14 +0200 |
| commit | c2ec175c39f62949438354f603f4aa170846aabb (patch) | |
| tree | f2c9bf1bec2deabe2d3a5092405b027637b6ead3 /fs/ext4/inode.c | |
| parent | mm: enable hashdist by default on 64bit NUMA (diff) | |
| download | linux-c2ec175c39f62949438354f603f4aa170846aabb.tar.xz linux-c2ec175c39f62949438354f603f4aa170846aabb.zip | |
mm: page_mkwrite change prototype to match fault
Change the page_mkwrite prototype to take a struct vm_fault, and return
VM_FAULT_xxx flags. There should be no functional change.
This makes it possible to return much more detailed error information to
the VM (and also can provide more information eg. virtual_address to the
driver, which might be important in some special cases).
This is required for a subsequent fix. And will also make it easier to
merge page_mkwrite() with fault() in future.
Signed-off-by: Nick Piggin <npiggin@suse.de>
Cc: Chris Mason <chris.mason@oracle.com>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: Miklos Szeredi <miklos@szeredi.hu>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: Joel Becker <joel.becker@oracle.com>
Cc: Artem Bityutskiy <dedekind@infradead.org>
Cc: Felix Blyakher <felixb@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ext4/inode.c')
| -rw-r--r-- | fs/ext4/inode.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 71d3ecd5db79..dd82ff390067 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -5146,8 +5146,9 @@ static int ext4_bh_unmapped(handle_t *handle, struct buffer_head *bh) return !buffer_mapped(bh); } -int ext4_page_mkwrite(struct vm_area_struct *vma, struct page *page) +int ext4_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf) { + struct page *page = vmf->page; loff_t size; unsigned long len; int ret = -EINVAL; @@ -5199,6 +5200,8 @@ int ext4_page_mkwrite(struct vm_area_struct *vma, struct page *page) goto out_unlock; ret = 0; out_unlock: + if (ret) + ret = VM_FAULT_SIGBUS; up_read(&inode->i_alloc_sem); return ret; } |