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authorJeff Layton <jlayton@redhat.com>2017-07-06 07:02:22 -0400
committerJeff Layton <jlayton@redhat.com>2017-07-06 07:02:22 -0400
commit76341cabbdad65c10a4162e9dfa82a6342afc02f (patch)
tree92413633a5fc6554fecd37842a4bcfd06fde0adb /fs/jbd2
parent87354e5de04fe727227ff619af164202adcfa4d4 (diff)
downloadlinux-76341cabbdad65c10a4162e9dfa82a6342afc02f.tar.bz2
jbd2: don't clear and reset errors after waiting on writeback
Resetting this flag is almost certainly racy, and will be problematic with some coming changes. Make filemap_fdatawait_keep_errors return int, but not clear the flag(s). Have jbd2 call it instead of filemap_fdatawait and don't attempt to re-set the error flag if it fails. Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com> Signed-off-by: Jeff Layton <jlayton@redhat.com>
Diffstat (limited to 'fs/jbd2')
-rw-r--r--fs/jbd2/commit.c16
1 files changed, 4 insertions, 12 deletions
diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c
index b6b194ec1b4f..3c1c31321d9b 100644
--- a/fs/jbd2/commit.c
+++ b/fs/jbd2/commit.c
@@ -263,18 +263,10 @@ static int journal_finish_inode_data_buffers(journal_t *journal,
continue;
jinode->i_flags |= JI_COMMIT_RUNNING;
spin_unlock(&journal->j_list_lock);
- err = filemap_fdatawait(jinode->i_vfs_inode->i_mapping);
- if (err) {
- /*
- * Because AS_EIO is cleared by
- * filemap_fdatawait_range(), set it again so
- * that user process can get -EIO from fsync().
- */
- mapping_set_error(jinode->i_vfs_inode->i_mapping, -EIO);
-
- if (!ret)
- ret = err;
- }
+ err = filemap_fdatawait_keep_errors(
+ jinode->i_vfs_inode->i_mapping);
+ if (!ret)
+ ret = err;
spin_lock(&journal->j_list_lock);
jinode->i_flags &= ~JI_COMMIT_RUNNING;
smp_mb();