5.15-stable review patch. If anyone has any objections, please let me know.
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From: Jeff Layton jlayton@kernel.org
[ Upstream commit e59fb6749ed833deee5b3cfd7e89925296d41f49 ]
lockd needs to be able to hash filehandles for tracepoints. Move the nfs_fhandle_hash() helper to a common nfs include file.
Signed-off-by: Jeff Layton jlayton@kernel.org Signed-off-by: Chuck Lever chuck.lever@oracle.com Stable-dep-of: cd35b6cb4664 ("nfs: add missing selections of CONFIG_CRC32") Signed-off-by: Sasha Levin sashal@kernel.org --- fs/nfs/internal.h | 15 --------------- include/linux/nfs.h | 20 ++++++++++++++++++++ 2 files changed, 20 insertions(+), 15 deletions(-)
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index 692018327b5ff..243d7e69e5115 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -769,27 +769,12 @@ u64 nfs_timespec_to_change_attr(const struct timespec64 *ts) }
#ifdef CONFIG_CRC32 -/** - * nfs_fhandle_hash - calculate the crc32 hash for the filehandle - * @fh - pointer to filehandle - * - * returns a crc32 hash for the filehandle that is compatible with - * the one displayed by "wireshark". - */ -static inline u32 nfs_fhandle_hash(const struct nfs_fh *fh) -{ - return ~crc32_le(0xFFFFFFFF, &fh->data[0], fh->size); -} 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_fhandle_hash(const struct nfs_fh *fh) -{ - return 0; -} static inline u32 nfs_stateid_hash(nfs4_stateid *stateid) { return 0; diff --git a/include/linux/nfs.h b/include/linux/nfs.h index b06375e88e589..ceb70a926b95e 100644 --- a/include/linux/nfs.h +++ b/include/linux/nfs.h @@ -10,6 +10,7 @@
#include <linux/sunrpc/msg_prot.h> #include <linux/string.h> +#include <linux/crc32.h> #include <uapi/linux/nfs.h>
/* @@ -44,4 +45,23 @@ enum nfs3_stable_how { /* used by direct.c to mark verf as invalid */ NFS_INVALID_STABLE_HOW = -1 }; + +#ifdef CONFIG_CRC32 +/** + * nfs_fhandle_hash - calculate the crc32 hash for the filehandle + * @fh - pointer to filehandle + * + * returns a crc32 hash for the filehandle that is compatible with + * the one displayed by "wireshark". + */ +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 */