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(). Original patch by: Pavel Emelyanov <[email protected]> Signed-off-by: Maxim Patlasov <[email protected]> --- fs/fuse/file.c | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-) diff --git a/fs/fuse/file.c b/fs/fuse/file.c index 6821e95..5509c0b 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -288,6 +288,12 @@ 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_UPDATED, &get_fuse_inode(inode)->state)) fuse_flush_mtime(file, true); _______________________________________________ Devel mailing list [email protected] https://lists.openvz.org/mailman/listinfo/devel
