linux-yocto/fs/iomap
Gou Hao ce7e04d26a iomap: skip unnecessary ifs_block_is_uptodate check
[ Upstream commit 8e3c15ee0d ]

In iomap_adjust_read_range, i is either the first !uptodate block, or it
is past last for the second loop looking for trailing uptodate blocks.
Assuming there's no overflow (there's no combination of huge folios and
tiny blksize) then yeah, there is no point in retesting that the same
block pointed to by i is uptodate since we hold the folio lock so nobody
else could have set it uptodate.

Signed-off-by: Gou Hao <gouhao@uniontech.com>
Link: https://lore.kernel.org/20250410071236.16017-1-gouhao@uniontech.com
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Suggested-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-05-02 07:51:01 +02:00
..
buffered-io.c iomap: skip unnecessary ifs_block_is_uptodate check 2025-05-02 07:51:01 +02:00
direct-io.c iomap: support IOCB_DIO_CALLER_COMP 2023-08-01 17:32:49 -06:00
fiemap.c
iter.c
Makefile
seek.c
swapfile.c
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