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NFS: fix nfs_path in case of a rename retry

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We are generating incorrect path in case of rename retry because
we are restarting from wrong dentry. We should restart from the
dentry which was received in the call to nfs_path.

CC: stable@vger.kernel.org
Signed-off-by: Ashish Sangwan <ashishsangwan2@gmail.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Ashish Sangwan 2020-10-05 02:22:43 -07:00 committed by Anna Schumaker
parent 5904c16d22
commit 247db73560
1 changed files with 8 additions and 4 deletions
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12
fs/nfs/namespace.c
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@ -32,9 +32,9 @@ int nfs_mountpoint_expiry_timeout = 500 * HZ;
/*
* nfs_path - reconstruct the path given an arbitrary dentry
* @base - used to return pointer to the end of devname part of path
* @dentry - pointer to dentry
* @dentry_in - pointer to dentry
* @buffer - result buffer
* @buflen - length of buffer
* @buflen_in - length of buffer
* @flags - options (see below)
*
* Helper function for constructing the server pathname
@ -49,15 +49,19 @@ int nfs_mountpoint_expiry_timeout = 500 * HZ;
* the original device (export) name
* (if unset, the original name is returned verbatim)
*/
char *nfs_path(char **p, struct dentry *dentry, char *buffer, ssize_t buflen,
unsigned flags)
char *nfs_path(char **p, struct dentry *dentry_in, char *buffer,
ssize_t buflen_in, unsigned flags)
{
char *end;
int namelen;
unsigned seq;
const char *base;
struct dentry *dentry;
ssize_t buflen;
rename_retry:
buflen = buflen_in;
dentry = dentry_in;
end = buffer+buflen;
*--end = '\0';
buflen--;