Commit b119fb09 authored by Max Kellermann's avatar Max Kellermann Committed by Andrew Morton
Browse files

fs: constify mapping related test functions for improved const-correctness 

We select certain test functions which either invoke each other, functions
that are already const-ified, or no further functions.

It is therefore relatively trivial to const-ify them, which provides a
basis for further const-ification further up the call stack.

Link: https://lkml.kernel.org/r/20250901205021.3573313-5-max.kellermann@ionos.com


Signed-off-by: default avatarMax Kellermann <max.kellermann@ionos.com>
Reviewed-by: default avatarVishal Moola (Oracle) <vishal.moola@gmail.com>
Reviewed-by: default avatarLorenzo Stoakes <lorenzo.stoakes@oracle.com>
Acked-by: default avatarDavid Hildenbrand <david@redhat.com>
Reviewed-by: default avatarJan Kara <jack@suse.cz>
Reviewed-by: default avatarChristian Brauner <brauner@kernel.org>
Acked-by: default avatarVlastimil Babka <vbabka@suse.cz>
Acked-by: default avatarMike Rapoport (Microsoft) <rppt@kernel.org>
Acked-by: default avatarShakeel Butt <shakeel.butt@linux.dev>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Borislav Betkov <bp@alien8.de>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Christian Zankel <chris@zankel.net>
Cc: David Rientjes <rientjes@google.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Gerald Schaefer <gerald.schaefer@linux.ibm.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Bottomley <james.bottomley@HansenPartnership.com>
Cc: Jocelyn Falempe <jfalempe@redhat.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@suse.com>
Cc: "Nysal Jan K.A" <nysal@linux.ibm.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Russel King <linux@armlinux.org.uk>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Thomas Gleinxer <tglx@linutronix.de>
Cc: Thomas Huth <thuth@redhat.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Wei Xu <weixugc@google.com>
Cc: Yuanchu Xie <yuanchu@google.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 959b0886

include/linux/fs.h

+3 −3
Original line number Diff line number Diff line
@@ -537,7 +537,7 @@ struct address_space { 
/*

 * Returns true if any of the pages in the mapping are marked with the tag.

 */

static inline bool mapping_tagged(struct address_space *mapping, xa_mark_t tag)

static inline bool mapping_tagged(const struct address_space *mapping, xa_mark_t tag)

{

	return xa_marked(&mapping->i_pages, tag);

}
@@ -585,7 +585,7 @@ static inline void i_mmap_assert_write_locked(struct address_space *mapping) 
/*

 * Might pages of this file be mapped into userspace?

 */

static inline int mapping_mapped(struct address_space *mapping)

static inline int mapping_mapped(const struct address_space *mapping)

{

	return	!RB_EMPTY_ROOT(&mapping->i_mmap.rb_root);

}
@@ -599,7 +599,7 @@ static inline int mapping_mapped(struct address_space *mapping) 
 * If i_mmap_writable is negative, no new writable mappings are allowed. You

 * can only deny writable mappings, if none exists right now.

 */

static inline int mapping_writably_mapped(struct address_space *mapping)

static inline int mapping_writably_mapped(const struct address_space *mapping)

{

	return atomic_read(&mapping->i_mmap_writable) > 0;

}