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authorLinus Torvalds <torvalds@linux-foundation.org>2016-12-18 05:44:00 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2016-12-18 05:44:00 +0300
commit0110c350c86d511be2130cb2a30dcbb76c4af750 (patch)
treed343a9e0fcb586a7110b13d411b314d33d404c08 /fs/ceph/addr.c
parentd9cb5bfcc3339f1a63df8fe0af8cece33c83c3af (diff)
parent9763f7a4a5f7b1a7c480fa06d01b2bad25163c0a (diff)
downloadlinux-0110c350c86d511be2130cb2a30dcbb76c4af750.tar.xz
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull more vfs updates from Al Viro: "In this pile: - autofs-namespace series - dedupe stuff - more struct path constification" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (40 commits) ocfs2: implement the VFS clone_range, copy_range, and dedupe_range features ocfs2: charge quota for reflinked blocks ocfs2: fix bad pointer cast ocfs2: always unlock when completing dio writes ocfs2: don't eat io errors during _dio_end_io_write ocfs2: budget for extent tree splits when adding refcount flag ocfs2: prohibit refcounted swapfiles ocfs2: add newlines to some error messages ocfs2: convert inode refcount test to a helper simple_write_end(): don't zero in short copy into uptodate exofs: don't mess with simple_write_{begin,end} 9p: saner ->write_end() on failing copy into non-uptodate page fix gfs2_stuffed_write_end() on short copies fix ceph_write_end() nfs_write_end(): fix handling of short copies vfs: refactor clone/dedupe_file_range common functions fs: try to clone files first in vfs_copy_file_range vfs: misc struct path constification namespace.c: constify struct path passed to a bunch of primitives quota: constify struct path in quota_on ...
Diffstat (limited to 'fs/ceph/addr.c')
-rw-r--r--fs/ceph/addr.c14
1 files changed, 8 insertions, 6 deletions
diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index a0f1e2b91c8e..9cd0c0ea7cdb 100644
--- a/fs/ceph/addr.c
+++ b/fs/ceph/addr.c
@@ -1317,25 +1317,27 @@ static int ceph_write_end(struct file *file, struct address_space *mapping,
struct page *page, void *fsdata)
{
struct inode *inode = file_inode(file);
- unsigned from = pos & (PAGE_SIZE - 1);
int check_cap = 0;
dout("write_end file %p inode %p page %p %d~%d (%d)\n", file,
inode, page, (int)pos, (int)copied, (int)len);
/* zero the stale part of the page if we did a short copy */
- if (copied < len)
- zero_user_segment(page, from+copied, len);
+ if (!PageUptodate(page)) {
+ if (copied < len) {
+ copied = 0;
+ goto out;
+ }
+ SetPageUptodate(page);
+ }
/* did file size increase? */
if (pos+copied > i_size_read(inode))
check_cap = ceph_inode_set_size(inode, pos+copied);
- if (!PageUptodate(page))
- SetPageUptodate(page);
-
set_page_dirty(page);
+out:
unlock_page(page);
put_page(page);