From ca42800ced404044603e89d485a34d0239047435 Mon Sep 17 00:00:00 2001 From: Hiroya Nozaki Date: Thu, 10 Nov 2016 12:31:00 -0500 Subject: [PATCH] staging: lustre: llite: ll_write_begin/end not passing on errors Because of a implementation of generic_perform_write(), write(2) may return 0 with no errno even if EDQUOT or ENOSPC actually happened in it. This patch fixes the issue with setting a proper errno to ci_result. Signed-off-by: Hiroya Nozaki Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-6732 Reviewed-on: http://review.whamcloud.com/15302 Reviewed-by: Bobi Jam Reviewed-by: Andreas Dilger Reviewed-by: Oleg Drokin Signed-off-by: James Simmons Signed-off-by: Greg Kroah-Hartman --- drivers/staging/lustre/lustre/llite/rw26.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/staging/lustre/lustre/llite/rw26.c b/drivers/staging/lustre/lustre/llite/rw26.c index ca45b44dee33..c1b74096d46e 100644 --- a/drivers/staging/lustre/lustre/llite/rw26.c +++ b/drivers/staging/lustre/lustre/llite/rw26.c @@ -478,6 +478,7 @@ static int ll_write_begin(struct file *file, struct address_space *mapping, lcc = ll_cl_find(file); if (!lcc) { + io = NULL; result = -EIO; goto out; } @@ -558,6 +559,8 @@ out: lu_ref_del(&page->cp_reference, "cl_io", io); cl_page_put(env, page); } + if (io) + io->ci_result = result; } else { *pagep = vmpage; *fsdata = lcc; @@ -627,6 +630,8 @@ static int ll_write_end(struct file *file, struct address_space *mapping, file->f_flags & O_SYNC || IS_SYNC(file_inode(file))) result = vvp_io_write_commit(env, io); + if (result < 0) + io->ci_result = result; return result >= 0 ? copied : result; } -- 2.20.1