Commit e7cc133c authored Oct 10, 2013 by Pavel Emelyanov Committed by Miklos Szeredi Apr 02, 2014

fuse: Flush files on wb close



Any write request requires a file handle to report to the userspace. Thus
when we close a file (and free the fuse_file with this info) we have to
flush all the outstanding dirty pages.

filemap_write_and_wait() is enough because every page under fuse writeback
is accounted in ff->count. This delays actual close until all fuse wb is
completed.

In case of "write cache" turned off, the flush is ensured by fuse_vma_close().

Signed-off-by: Maxim Patlasov <MPatlasov@parallels.com>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>

parent b0aa7606

fs/fuse/file.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -308,6 +308,12 @@ static int fuse_open(struct inode inode, struct file file)

		static int fuse_release(struct inode inode, struct file file)
		{
		struct fuse_conn *fc = get_fuse_conn(inode);

		/* see fuse_vma_close() for !writeback_cache case */
		if (fc->writeback_cache)
		filemap_write_and_wait(file->f_mapping);

		if (test_bit(FUSE_I_MTIME_DIRTY, &get_fuse_inode(inode)->state))
		fuse_flush_mtime(file, true);

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