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Commit 14a74dcc authored by David Howells's avatar David Howells Committed by Greg Kroah-Hartman
Browse files

afs: Flush outstanding writes when an fd is closed 




[ Upstream commit 58fed94dfb17e89556b5705f20f90e5b2971b6a1 ]

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>
Signed-off-by: default avatarSasha Levin <alexander.levin@verizon.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 24a7a4f0

fs/afs/file.c

+1 −0
Original line number Diff line number Diff line
@@ -29,6 +29,7 @@ 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		= new_sync_read,

fs/afs/internal.h

+1 −0
Original line number Diff line number Diff line
@@ -749,6 +749,7 @@ 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);

fs/afs/write.c

+14 −0
Original line number Diff line number Diff line
@@ -742,6 +742,20 @@ out: 
	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