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Commit e7cc133c authored by Pavel Emelyanov's avatar Pavel Emelyanov Committed by Miklos Szeredi
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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: default avatarMaxim Patlasov <MPatlasov@parallels.com>
Signed-off-by: default avatarMiklos 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);