cifs: report error instead of invalid when revalidating a dentry fails
Assuming - //HOST/a is mounted on /mnt - //HOST/b is mounted on /mnt/b On a slow connection, running 'df' and killing it while it's processing /mnt/b can make cifs_get_inode_info() returns -ERESTARTSYS. This triggers the following chain of events: => the dentry revalidation fail => dentry is put and released => superblock associated with the dentry is put => /mnt/b is unmounted This patch makes cifs_d_revalidate() return the error instead of 0 (invalid) when cifs_revalidate_dentry() fails, except for ENOENT (file deleted) and ESTALE (file recreated). Signed-off-by:Aurelien Aptel <aaptel@suse.com> Suggested-by:
Shyam Prasad N <nspmangalore@gmail.com> Reviewed-by:
Shyam Prasad N <nspmangalore@gmail.com> CC: stable@vger.kernel.org Signed-off-by:
Steve French <stfrench@microsoft.com>
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