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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>
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@ -1467,8 +1467,10 @@ int vfs_get_tree(struct fs_context *fc)
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struct super_block *sb;
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int error;
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if (fc->fs_type->fs_flags & FS_REQUIRES_DEV && !fc->source)
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if (fc->fs_type->fs_flags & FS_REQUIRES_DEV && !fc->source) {
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errorf(fc, "Filesystem requires source device");
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return -ENOENT;
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}
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if (fc->root)
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return -EBUSY;
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@ -17,7 +17,7 @@
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#include <trace/events/cgroup.h>
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#define cg_invalf(fc, fmt, ...) ({ pr_err(fmt, ## __VA_ARGS__); -EINVAL; })
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#define cg_invalf(fc, fmt, ...) invalf(fc, fmt, ## __VA_ARGS__)
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/*
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* pidlists linger the following amount before being destroyed. The goal
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