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expfs: Fix exportfs_can_encode_fh() for EXPORT_FH_FID 

After commit 5402c4d4d2 ("exportfs: require ->fh_to_parent() to encode
connectable file handles") we will fail to create non-decodable file
handles for filesystems without export operations. Fix it.

Fixes: 5402c4d4d2 ("exportfs: require ->fh_to_parent() to encode connectable file handles")
Reviewed-by: Christian Brauner <brauner@kernel.org>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Jan Kara 2025-10-01 15:19:07 +02:00
parent fd94619c43
commit 48b77733d0
1 changed files with 4 additions and 3 deletions
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7
include/linux/exportfs.h
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@ -320,9 +320,6 @@ static inline bool exportfs_can_decode_fh(const struct export_operations *nop)
static inline bool exportfs_can_encode_fh(const struct export_operations *nop,
int fh_flags)
{
if (!nop)
return false;
/*
* If a non-decodeable file handle was requested, we only need to make
* sure that filesystem did not opt-out of encoding fid.
@ -330,6 +327,10 @@ static inline bool exportfs_can_encode_fh(const struct export_operations *nop,
if (fh_flags & EXPORT_FH_FID)
return exportfs_can_encode_fid(nop);
/* Normal file handles cannot be created without export ops */
if (!nop)
return false;
/*
* If a connectable file handle was requested, we need to make sure that
* filesystem can also decode connected file handles.