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vfs: Add some logging to the core users of the fs_context log 

Add some logging to the core users of the fs_context log so that
information can be extracted from them as to the reason for failure.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
hifive-unleashed-5.1
David Howells 2018-11-01 23:07:26 +00:00 committed by Al Viro
parent e7582e16a1
commit 06a2ae56b5
2 changed files with 4 additions and 2 deletions
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4
fs/super.c
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@ -1467,8 +1467,10 @@ int vfs_get_tree(struct fs_context *fc)
struct super_block *sb;
int error;
if (fc->fs_type->fs_flags & FS_REQUIRES_DEV && !fc->source)
if (fc->fs_type->fs_flags & FS_REQUIRES_DEV && !fc->source) {
errorf(fc, "Filesystem requires source device");
return -ENOENT;
}
if (fc->root)
return -EBUSY;

2
kernel/cgroup/cgroup-v1.c
View File

@ -17,7 +17,7 @@
#include <trace/events/cgroup.h>
#define cg_invalf(fc, fmt, ...) ({ pr_err(fmt, ## __VA_ARGS__); -EINVAL; })
#define cg_invalf(fc, fmt, ...) invalf(fc, fmt, ## __VA_ARGS__)
/*
* pidlists linger the following amount before being destroyed. The goal