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From: David Howells <dhowells@redhat.com>
To: torvalds@linux-foundation.org, willy@infradead.org
Cc: Akinobu Mita <akinobu.mita@gmail.com>,
	Arnd Bergmann <arnd@arndb.de>, Will Deacon <will@kernel.org>,
	dhowells@redhat.com, jlayton@kernel.org, hch@lst.de,
	akpm@linux-foundation.org, linux-mm@kvack.org,
	linux-fsdevel@vger.kernel.org, linux-cachefs@redhat.com,
	v9fs-developer@lists.sourceforge.net,
	linux-afs@lists.infradead.org, ceph-devel@vger.kernel.org,
	linux-cifs@vger.kernel.org, linux-nfs@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: [RFC PATCH 1/3] Make the generic bitops return bool
Date: Fri, 09 Apr 2021 11:59:01 +0100	[thread overview]
Message-ID: <161796594154.350846.1787112929938233401.stgit@warthog.procyon.org.uk> (raw)
In-Reply-To: <CAHk-=wi_XrtTanTwoKs0jwnjhSvwpMYVDJ477VtjvvTXRjm5wQ@mail.gmail.com>

Make the generic bitops return bool when returning the value of a tested
bit.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Linus Torvalds <torvalds@linux-foundation.org>
cc: Matthew Wilcox <willy@infradead.org>
cc: Akinobu Mita <akinobu.mita@gmail.com>
cc: Arnd Bergmann <arnd@arndb.de>
cc: Will Deacon <will@kernel.org>
---

 include/asm-generic/bitops/atomic.h     |    6 +++---
 include/asm-generic/bitops/le.h         |   10 +++++-----
 include/asm-generic/bitops/lock.h       |    4 ++--
 include/asm-generic/bitops/non-atomic.h |    8 ++++----
 4 files changed, 14 insertions(+), 14 deletions(-)

diff --git a/include/asm-generic/bitops/atomic.h b/include/asm-generic/bitops/atomic.h
index 0e7316a86240..9b05e8634c09 100644
--- a/include/asm-generic/bitops/atomic.h
+++ b/include/asm-generic/bitops/atomic.h
@@ -29,7 +29,7 @@ static __always_inline void change_bit(unsigned int nr, volatile unsigned long *
 	atomic_long_xor(BIT_MASK(nr), (atomic_long_t *)p);
 }
 
-static inline int test_and_set_bit(unsigned int nr, volatile unsigned long *p)
+static inline bool test_and_set_bit(unsigned int nr, volatile unsigned long *p)
 {
 	long old;
 	unsigned long mask = BIT_MASK(nr);
@@ -42,7 +42,7 @@ static inline int test_and_set_bit(unsigned int nr, volatile unsigned long *p)
 	return !!(old & mask);
 }
 
-static inline int test_and_clear_bit(unsigned int nr, volatile unsigned long *p)
+static inline bool test_and_clear_bit(unsigned int nr, volatile unsigned long *p)
 {
 	long old;
 	unsigned long mask = BIT_MASK(nr);
@@ -55,7 +55,7 @@ static inline int test_and_clear_bit(unsigned int nr, volatile unsigned long *p)
 	return !!(old & mask);
 }
 
-static inline int test_and_change_bit(unsigned int nr, volatile unsigned long *p)
+static inline bool test_and_change_bit(unsigned int nr, volatile unsigned long *p)
 {
 	long old;
 	unsigned long mask = BIT_MASK(nr);
diff --git a/include/asm-generic/bitops/le.h b/include/asm-generic/bitops/le.h
index 188d3eba3ace..33355cf288f6 100644
--- a/include/asm-generic/bitops/le.h
+++ b/include/asm-generic/bitops/le.h
@@ -50,7 +50,7 @@ extern unsigned long find_next_bit_le(const void *addr,
 #error "Please fix <asm/byteorder.h>"
 #endif
 
-static inline int test_bit_le(int nr, const void *addr)
+static inline bool test_bit_le(int nr, const void *addr)
 {
 	return test_bit(nr ^ BITOP_LE_SWIZZLE, addr);
 }
@@ -75,22 +75,22 @@ static inline void __clear_bit_le(int nr, void *addr)
 	__clear_bit(nr ^ BITOP_LE_SWIZZLE, addr);
 }
 
-static inline int test_and_set_bit_le(int nr, void *addr)
+static inline bool test_and_set_bit_le(int nr, void *addr)
 {
 	return test_and_set_bit(nr ^ BITOP_LE_SWIZZLE, addr);
 }
 
-static inline int test_and_clear_bit_le(int nr, void *addr)
+static inline bool test_and_clear_bit_le(int nr, void *addr)
 {
 	return test_and_clear_bit(nr ^ BITOP_LE_SWIZZLE, addr);
 }
 
-static inline int __test_and_set_bit_le(int nr, void *addr)
+static inline bool __test_and_set_bit_le(int nr, void *addr)
 {
 	return __test_and_set_bit(nr ^ BITOP_LE_SWIZZLE, addr);
 }
 
-static inline int __test_and_clear_bit_le(int nr, void *addr)
+static inline bool __test_and_clear_bit_le(int nr, void *addr)
 {
 	return __test_and_clear_bit(nr ^ BITOP_LE_SWIZZLE, addr);
 }
diff --git a/include/asm-generic/bitops/lock.h b/include/asm-generic/bitops/lock.h
index 3ae021368f48..0e6acd059a59 100644
--- a/include/asm-generic/bitops/lock.h
+++ b/include/asm-generic/bitops/lock.h
@@ -15,8 +15,8 @@
  * the returned value is 0.
  * It can be used to implement bit locks.
  */
-static inline int test_and_set_bit_lock(unsigned int nr,
-					volatile unsigned long *p)
+static inline bool test_and_set_bit_lock(unsigned int nr,
+					 volatile unsigned long *p)
 {
 	long old;
 	unsigned long mask = BIT_MASK(nr);
diff --git a/include/asm-generic/bitops/non-atomic.h b/include/asm-generic/bitops/non-atomic.h
index 7e10c4b50c5d..7d916f677be3 100644
--- a/include/asm-generic/bitops/non-atomic.h
+++ b/include/asm-generic/bitops/non-atomic.h
@@ -55,7 +55,7 @@ static inline void __change_bit(int nr, volatile unsigned long *addr)
  * If two examples of this operation race, one can appear to succeed
  * but actually fail.  You must protect multiple accesses with a lock.
  */
-static inline int __test_and_set_bit(int nr, volatile unsigned long *addr)
+static inline bool __test_and_set_bit(int nr, volatile unsigned long *addr)
 {
 	unsigned long mask = BIT_MASK(nr);
 	unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
@@ -74,7 +74,7 @@ static inline int __test_and_set_bit(int nr, volatile unsigned long *addr)
  * If two examples of this operation race, one can appear to succeed
  * but actually fail.  You must protect multiple accesses with a lock.
  */
-static inline int __test_and_clear_bit(int nr, volatile unsigned long *addr)
+static inline bool __test_and_clear_bit(int nr, volatile unsigned long *addr)
 {
 	unsigned long mask = BIT_MASK(nr);
 	unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
@@ -85,7 +85,7 @@ static inline int __test_and_clear_bit(int nr, volatile unsigned long *addr)
 }
 
 /* WARNING: non atomic and it can be reordered! */
-static inline int __test_and_change_bit(int nr,
+static inline bool __test_and_change_bit(int nr,
 					    volatile unsigned long *addr)
 {
 	unsigned long mask = BIT_MASK(nr);
@@ -101,7 +101,7 @@ static inline int __test_and_change_bit(int nr,
  * @nr: bit number to test
  * @addr: Address to start counting from
  */
-static inline int test_bit(int nr, const volatile unsigned long *addr)
+static inline bool test_bit(int nr, const volatile unsigned long *addr)
 {
 	return 1UL & (addr[BIT_WORD(nr)] >> (nr & (BITS_PER_LONG-1)));
 }



  reply	other threads:[~2021-04-09 10:59 UTC|newest]

Thread overview: 68+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-08 14:03 [PATCH v6 00/30] Network fs helper library & fscache kiocb API David Howells
2021-04-08 14:04 ` [PATCH v6 01/30] iov_iter: Add ITER_XARRAY David Howells
2021-04-09  1:24   ` Al Viro
2021-04-09 18:10     ` [RFC PATCH 1/2] iov_iter: Remove iov_iter_for_each_range() David Howells
2021-04-09 18:11     ` [RFC PATCH 2/2] iov_iter: Drop the X argument from iterate_all_kinds() and use B instead David Howells
2021-04-09  9:09   ` [PATCH v6 01/30] iov_iter: Add ITER_XARRAY David Howells
2021-04-09 11:44     ` Matthew Wilcox
2021-04-22 13:35   ` Jeff Layton
2021-04-22 13:35     ` Jeff Layton
2021-04-22 13:51   ` David Howells
2021-04-22 14:51     ` Jeff Layton
2021-04-22 14:51       ` Jeff Layton
2021-04-08 14:04 ` [PATCH v6 02/30] mm: Add set/end/wait functions for PG_private_2 David Howells
2021-04-08 14:50   ` Matthew Wilcox
2021-04-08 15:25   ` David Howells
2021-04-08 15:57   ` David Howells
2021-04-08 21:15   ` [RFC][PATCH] mm: Split page_has_private() in two to better handle PG_private_2 David Howells
2021-04-08 23:50     ` Linus Torvalds
2021-04-08 23:50       ` Linus Torvalds
2021-04-09 10:59       ` David Howells [this message]
2021-04-09 10:59       ` [RFC PATCH 2/3] mm: Return bool from pagebit test functions David Howells
2021-04-09 11:16         ` Matthew Wilcox
2021-04-09 12:00         ` David Howells
2021-04-09 12:35         ` David Howells
2021-04-09 16:03         ` David Howells
2021-04-09 16:03           ` David Howells
2021-04-09 10:59       ` [RFC PATCH 3/3] mm: Split page_has_private() in two to better handle PG_private_2 David Howells
2021-04-09 11:24         ` Matthew Wilcox
2021-04-09  8:14     ` [RFC][PATCH] " David Howells
2021-04-13 15:11   ` [PATCH v7] mm: Add set/end/wait functions for PG_private_2 David Howells
2021-04-13 15:22     ` Matthew Wilcox
2021-04-08 14:04 ` [PATCH v6 03/30] mm/filemap: Pass the file_ra_state in the ractl David Howells
2021-04-08 14:04 ` [PATCH v6 04/30] fs: Document file_ra_state David Howells
2021-04-08 14:04 ` [PATCH v6 05/30] mm: Implement readahead_control pageset expansion David Howells
2021-04-08 14:55   ` Matthew Wilcox
2021-04-08 14:05 ` [PATCH v6 06/30] netfs: Make a netfs helper module David Howells
2021-04-08 14:05 ` [PATCH v6 07/30] netfs: Documentation for helper library David Howells
2021-04-08 14:05 ` [PATCH v6 08/30] netfs, mm: Move PG_fscache helper funcs to linux/netfs.h David Howells
2021-04-08 14:05 ` [PATCH v6 09/30] netfs, mm: Add set/end/wait_on_page_fscache() aliases David Howells
2021-04-08 14:06 ` [PATCH v6 10/30] netfs: Provide readahead and readpage netfs helpers David Howells
2021-04-08 14:06 ` [PATCH v6 11/30] netfs: Add tracepoints David Howells
2021-04-08 14:06 ` [PATCH v6 12/30] netfs: Gather stats David Howells
2021-04-08 14:06 ` [PATCH v6 13/30] netfs: Add write_begin helper David Howells
2021-04-08 14:06 ` [PATCH v6 14/30] netfs: Define an interface to talk to a cache David Howells
2021-04-08 14:07 ` [PATCH v6 15/30] netfs: Add a tracepoint to log failures that would be otherwise unseen David Howells
2021-04-08 14:07 ` [PATCH v6 16/30] fscache, cachefiles: Add alternate API to use kiocb for read/write to cache David Howells
2021-04-08 14:07 ` [PATCH v6 17/30] afs: Disable use of the fscache I/O routines David Howells
2021-04-08 14:07 ` [PATCH v6 18/30] afs: Pass page into dirty region helpers to provide THP size David Howells
2021-04-08 14:08 ` [PATCH v6 19/30] afs: Print the operation debug_id when logging an unexpected data version David Howells
2021-04-08 14:08 ` [PATCH v6 20/30] afs: Move key to afs_read struct David Howells
2021-04-08 14:08 ` [PATCH v6 21/30] afs: Don't truncate iter during data fetch David Howells
2021-04-08 14:08 ` [PATCH v6 22/30] afs: Log remote unmarshalling errors David Howells
2021-04-08 14:08 ` [PATCH v6 23/30] afs: Set up the iov_iter before calling afs_extract_data() David Howells
2021-04-08 14:09 ` [PATCH v6 24/30] afs: Use ITER_XARRAY for writing David Howells
2021-04-08 14:09 ` [PATCH v6 25/30] afs: Wait on PG_fscache before modifying/releasing a page David Howells
2021-04-08 14:09 ` [PATCH v6 26/30] afs: Extract writeback extension into its own function David Howells
2021-04-08 14:09 ` [PATCH v6 27/30] afs: Prepare for use of THPs David Howells
2021-04-08 14:09 ` [PATCH v6 28/30] afs: Use the fs operation ops to handle FetchData completion David Howells
2021-04-08 14:10 ` [PATCH v6 29/30] afs: Use new netfs lib read helper API David Howells
2021-04-08 14:10 ` [PATCH v6 30/30] afs: Use the netfs_write_begin() helper David Howells
2021-04-08 15:40 ` [PATCH v6 00/30] Network fs helper library & fscache kiocb API Jeff Layton
2021-04-08 15:40   ` Jeff Layton
2021-04-09 12:04 ` David Wysochanski
2021-04-09 12:04   ` David Wysochanski
2021-04-13 14:56   ` David Wysochanski
2021-04-13 14:56     ` David Wysochanski
2021-04-13 16:21 ` Marc Dionne
2021-04-13 16:21   ` Marc Dionne

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