The aim of .flush fop is to hint file-system that flushing its state or caches or any other important data to reliable storage would be desirable now. fuse_flush() passes this hint by sending FUSE_FLUSH request to userspace. However, dirty pages and pages under writeback may be not visible to userspace yet if we won't ensure it explicitly. Signed-off-by: Maxim Patlasov <MPatlasov@xxxxxxxxxxxxx> --- fs/fuse/file.c | 9 +++++++++ 1 files changed, 9 insertions(+), 0 deletions(-) diff --git a/fs/fuse/file.c b/fs/fuse/file.c index 2409654..7c24f6b 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -18,6 +18,7 @@ #include <linux/falloc.h> static const struct file_operations fuse_direct_io_file_operations; +static void fuse_sync_writes(struct inode *inode); static int fuse_send_open(struct fuse_conn *fc, u64 nodeid, struct file *file, int opcode, struct fuse_open_out *outargp) @@ -396,6 +397,14 @@ static int fuse_flush(struct file *file, fl_owner_t id) if (fc->no_flush) return 0; + err = filemap_write_and_wait(file->f_mapping); + if (err) + return err; + + mutex_lock(&inode->i_mutex); + fuse_sync_writes(inode); + mutex_unlock(&inode->i_mutex); + req = fuse_get_req_nofail_nopages(fc, file); memset(&inarg, 0, sizeof(inarg)); inarg.fh = ff->fh; -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
