Merge tag 'nfsd-6.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux

Pull nfsd fixes from Chuck Lever:

 - v6.15 libcrc clean-up makes invalid configurations possible

 - Fix a potential deadlock introduced during the v6.15 merge window

* tag 'nfsd-6.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux:
  nfsd: decrease sc_count directly if fail to queue dl_recall
  nfs: add missing selections of CONFIG_CRC32

Author: torvalds

fs/Kconfig

@@ -368,6 +368,7 @@ config GRACE_PERIOD
 config LOCKD
 	tristate
 	depends on FILE_LOCKING
+	select CRC32
 	select GRACE_PERIOD
 
 config LOCKD_V4

fs/nfs/Kconfig

@@ -2,6 +2,7 @@
 config NFS_FS
 	tristate "NFS client support"
 	depends on INET && FILE_LOCKING && MULTIUSER
+	select CRC32
 	select LOCKD
 	select SUNRPC
 	select NFS_COMMON
@@ -196,7 +197,6 @@ config NFS_USE_KERNEL_DNS
 config NFS_DEBUG
 	bool
 	depends on NFS_FS && SUNRPC_DEBUG
-	select CRC32
 	default y
 
 config NFS_DISABLE_UDP_SUPPORT

fs/nfs/internal.h

@@ -899,18 +899,11 @@ u64 nfs_timespec_to_change_attr(const struct timespec64 *ts)
 	return ((u64)ts->tv_sec << 30) + ts->tv_nsec;
 }
 
-#ifdef CONFIG_CRC32
 static inline u32 nfs_stateid_hash(const nfs4_stateid *stateid)
 {
 	return ~crc32_le(0xFFFFFFFF, &stateid->other[0],
 				NFS4_STATEID_OTHER_SIZE);
 }
-#else
-static inline u32 nfs_stateid_hash(nfs4_stateid *stateid)
-{
-	return 0;
-}
-#endif
 
 static inline bool nfs_current_task_exiting(void)
 {

fs/nfs/nfs4session.h

@@ -148,16 +148,12 @@ static inline void nfs4_copy_sessionid(struct nfs4_sessionid *dst,
 	memcpy(dst->data, src->data, NFS4_MAX_SESSIONID_LEN);
 }
 
-#ifdef CONFIG_CRC32
 /*
  * nfs_session_id_hash - calculate the crc32 hash for the session id
  * @session - pointer to session
  */
 #define nfs_session_id_hash(sess_id) \
 	(~crc32_le(0xFFFFFFFF, &(sess_id)->data[0], sizeof((sess_id)->data)))
-#else
-#define nfs_session_id_hash(session) (0)
-#endif
 #else /* defined(CONFIG_NFS_V4_1) */
 
 static inline int nfs4_init_session(struct nfs_client *clp)

fs/nfsd/Kconfig

@@ -4,6 +4,7 @@ config NFSD
 	depends on INET
 	depends on FILE_LOCKING
 	depends on FSNOTIFY
+	select CRC32
 	select LOCKD
 	select SUNRPC
 	select EXPORTFS

fs/nfsd/nfs4state.c

@@ -5430,7 +5430,7 @@ static void nfsd_break_one_deleg(struct nfs4_delegation *dp)
 	queued = nfsd4_run_cb(&dp->dl_recall);
 	WARN_ON_ONCE(!queued);
 	if (!queued)
-		nfs4_put_stid(&dp->dl_stid);
+		refcount_dec(&dp->dl_stid.sc_count);
 }
 
 /* Called from break_lease() with flc_lock held. */

fs/nfsd/nfsfh.h

@@ -267,7 +267,6 @@ static inline bool fh_fsid_match(const struct knfsd_fh *fh1,
 	return true;
 }
 
-#ifdef CONFIG_CRC32
 /**
  * knfsd_fh_hash - calculate the crc32 hash for the filehandle
  * @fh - pointer to filehandle
@@ -279,12 +278,6 @@ static inline u32 knfsd_fh_hash(const struct knfsd_fh *fh)
 {
 	return ~crc32_le(0xFFFFFFFF, fh->fh_raw, fh->fh_size);
 }
-#else
-static inline u32 knfsd_fh_hash(const struct knfsd_fh *fh)
-{
-	return 0;
-}
-#endif
 
 /**
  * fh_clear_pre_post_attrs - Reset pre/post attributes

include/linux/nfs.h

@@ -55,7 +55,6 @@ enum nfs3_stable_how {
 	NFS_INVALID_STABLE_HOW = -1
 };
 
-#ifdef CONFIG_CRC32
 /**
  * nfs_fhandle_hash - calculate the crc32 hash for the filehandle
  * @fh - pointer to filehandle
@@ -67,10 +66,4 @@ static inline u32 nfs_fhandle_hash(const struct nfs_fh *fh)
 {
 	return ~crc32_le(0xFFFFFFFF, &fh->data[0], fh->size);
 }
-#else /* CONFIG_CRC32 */
-static inline u32 nfs_fhandle_hash(const struct nfs_fh *fh)
-{
-	return 0;
-}
-#endif /* CONFIG_CRC32 */
 #endif /* _LINUX_NFS_H */