Commit d4b4516c authored by David Howells's avatar David Howells

afs: Flush outstanding writes when an fd is closed

Flush outstanding writes in afs when an fd is closed.  This is what NFS and
CIFS do.
Reported-by: default avatarMarc Dionne <marc.c.dionne@gmail.com>
Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
parent 9ece94db
......@@ -30,6 +30,7 @@ static int afs_readpages(struct file *filp, struct address_space *mapping,
const struct file_operations afs_file_operations = {
.open = afs_open,
.flush = afs_flush,
.release = afs_release,
.llseek = generic_file_llseek,
.read_iter = generic_file_read_iter,
......
......@@ -720,6 +720,7 @@ extern int afs_writepages(struct address_space *, struct writeback_control *);
extern void afs_pages_written_back(struct afs_vnode *, struct afs_call *);
extern ssize_t afs_file_write(struct kiocb *, struct iov_iter *);
extern int afs_writeback_all(struct afs_vnode *);
extern int afs_flush(struct file *, fl_owner_t);
extern int afs_fsync(struct file *, loff_t, loff_t, int);
......
......@@ -757,6 +757,20 @@ int afs_fsync(struct file *file, loff_t start, loff_t end, int datasync)
return ret;
}
/*
* Flush out all outstanding writes on a file opened for writing when it is
* closed.
*/
int afs_flush(struct file *file, fl_owner_t id)
{
_enter("");
if ((file->f_mode & FMODE_WRITE) == 0)
return 0;
return vfs_fsync(file, 0);
}
/*
* notification that a previously read-only page is about to become writable
* - if it returns an error, the caller will deliver a bus error signal
......
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