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authorDavid Howells <dhowells@redhat.com>2007-05-10 03:15:21 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-10 09:26:52 -0700
commitb9b1f8d5930a813879278d0cbfc8c658d6a038dc (patch)
tree1879e0e70ce946e3519a205698f4dd1b34a3a7ea /fs/afs/write.c
parent218e180e7ea5334e1f94121940ba82cd1f0f4e58 (diff)
downloadop-kernel-dev-b9b1f8d5930a813879278d0cbfc8c658d6a038dc.zip
op-kernel-dev-b9b1f8d5930a813879278d0cbfc8c658d6a038dc.tar.gz
AFS: write support fixes
AFS write support fixes: (1) Support large files using the 64-bit file access operations if available on the server. (2) Use kmap_atomic() rather than kmap() in afs_prepare_page(). (3) Don't do stuff in afs_writepage() that's done by the caller. [akpm@linux-foundation.org: fix right shift count >= width of type] Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/afs/write.c')
-rw-r--r--fs/afs/write.c14
1 files changed, 3 insertions, 11 deletions
diff --git a/fs/afs/write.c b/fs/afs/write.c
index 83ff292..aa03d43 100644
--- a/fs/afs/write.c
+++ b/fs/afs/write.c
@@ -122,7 +122,7 @@ static int afs_prepare_page(struct afs_vnode *vnode, struct page *page,
if (offset == 0 && to == PAGE_SIZE)
return 0;
- p = kmap(page);
+ p = kmap_atomic(page, KM_USER0);
i_size = i_size_read(&vnode->vfs_inode);
pos = (loff_t) page->index << PAGE_SHIFT;
@@ -133,7 +133,7 @@ static int afs_prepare_page(struct afs_vnode *vnode, struct page *page,
memset(p, 0, offset);
if (to < PAGE_SIZE)
memset(p + to, 0, PAGE_SIZE - to);
- kunmap(page);
+ kunmap_atomic(p, KM_USER0);
return 0;
}
@@ -152,7 +152,7 @@ static int afs_prepare_page(struct afs_vnode *vnode, struct page *page,
memset(p + eof, 0, PAGE_SIZE - eof);
}
- kunmap(p);
+ kunmap_atomic(p, KM_USER0);
ret = 0;
if (offset > 0 || eof > to) {
@@ -489,14 +489,6 @@ int afs_writepage(struct page *page, struct writeback_control *wbc)
_enter("{%lx},", page->index);
- if (wbc->sync_mode != WB_SYNC_NONE)
- wait_on_page_writeback(page);
-
- if (PageWriteback(page) || !PageDirty(page)) {
- unlock_page(page);
- return 0;
- }
-
wb = (struct afs_writeback *) page_private(page);
ASSERT(wb != NULL);
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