diff options
| author | Jeff Layton <jlayton@redhat.com> | 2010-10-15 15:34:07 -0400 |
|---|---|---|
| committer | Steve French <sfrench@us.ibm.com> | 2010-10-25 00:18:59 +0000 |
| commit | d3f1322af8f866be54ea79a4002fc30c98290411 (patch) | |
| tree | b043a2c269a0e2b8b64c34644dfe8586f114ead9 /fs/cifs/file.c | |
| parent | 5f6dbc9e4afe4d1d39e85de3ac2720a2042ad191 (diff) | |
cifs: wait for writeback to complete in cifs_flush
The f_op->flush operation is the last chance to return a writeback
related error when closing a file. Ensure that we don't miss reporting
any errors by waiting for writeback to complete in cifs_flush before
proceeding.
There's no reason to do this when the file isn't open for write
however.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Suresh Jayaraman <sjayaraman@suse.de>
Reviewed-by: David Kleikamp <shaggy@linux.vnet.ibm.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'fs/cifs/file.c')
| -rw-r--r-- | fs/cifs/file.c | 21 |
1 files changed, 7 insertions, 14 deletions
diff --git a/fs/cifs/file.c b/fs/cifs/file.c index baf4b5067ff9..128e07b85d6c 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -1688,20 +1688,13 @@ int cifs_flush(struct file *file, fl_owner_t id) struct inode *inode = file->f_path.dentry->d_inode; int rc = 0; - /* Rather than do the steps manually: - lock the inode for writing - loop through pages looking for write behind data (dirty pages) - coalesce into contiguous 16K (or smaller) chunks to write to server - send to server (prefer in parallel) - deal with writebehind errors - unlock inode for writing - filemapfdatawrite appears easier for the time being */ - - rc = filemap_fdatawrite(inode->i_mapping); - /* reset wb rc if we were able to write out dirty pages */ - if (!rc) { - rc = CIFS_I(inode)->write_behind_rc; - CIFS_I(inode)->write_behind_rc = 0; + if (file->f_mode & FMODE_WRITE) { + rc = filemap_write_and_wait(inode->i_mapping); + /* reset wb rc if we were able to write out dirty pages */ + if (!rc) { + rc = CIFS_I(inode)->write_behind_rc; + CIFS_I(inode)->write_behind_rc = 0; + } } cFYI(1, "Flush inode %p file %p rc %d", inode, file, rc); |