linux/fs/iomap
Matthew Wilcox (Oracle) f45b494e2a iomap: protect read_bytes_pending with the state_lock
Perform one atomic operation (acquiring the spinlock) instead of two
(spinlock & atomic_sub) per read completion.

Link: https://lkml.kernel.org/r/20231004165317.1061855-3-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Andreas Dilger <adilger.kernel@dilger.ca>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Richard Henderson <richard.henderson@linaro.org>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-10-18 14:34:16 -07:00
..
buffered-io.c iomap: protect read_bytes_pending with the state_lock 2023-10-18 14:34:16 -07:00
direct-io.c iomap: support IOCB_DIO_CALLER_COMP 2023-08-01 17:32:49 -06:00
fiemap.c fs: Move many prototypes to pagemap.h 2022-03-21 12:59:02 -04:00
iter.c iomap: write iomap validity checks 2022-11-29 09:09:17 +11:00
Makefile iomap: build the block based code conditionally 2021-12-04 08:58:54 -08:00
seek.c iomap: switch iomap_seek_data to use iomap_iter 2021-08-16 21:26:33 -07:00
swapfile.c mm/swap: consider max pages in iomap_swapfile_add_extent 2021-08-18 12:47:52 -07:00
trace.c iomap: Add DIO tracepoints 2023-04-21 08:54:47 -07:00
trace.h iomap: Add DIO tracepoints 2023-04-21 08:54:47 -07:00