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* kbuild: use $(src) instead of $(srctree)/$(src) for source directoryMasahiro Yamada2024-05-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Kbuild conventionally uses $(obj)/ for generated files, and $(src)/ for checked-in source files. It is merely a convention without any functional difference. In fact, $(obj) and $(src) are exactly the same, as defined in scripts/Makefile.build: src := $(obj) When the kernel is built in a separate output directory, $(src) does not accurately reflect the source directory location. While Kbuild resolves this discrepancy by specifying VPATH=$(srctree) to search for source files, it does not cover all cases. For example, when adding a header search path for local headers, -I$(srctree)/$(src) is typically passed to the compiler. This introduces inconsistency between upstream and downstream Makefiles because $(src) is used instead of $(srctree)/$(src) for the latter. To address this inconsistency, this commit changes the semantics of $(src) so that it always points to the directory in the source tree. Going forward, the variables used in Makefiles will have the following meanings: $(obj) - directory in the object tree $(src) - directory in the source tree (changed by this commit) $(objtree) - the top of the kernel object tree $(srctree) - the top of the kernel source tree Consequently, $(srctree)/$(src) in upstream Makefiles need to be replaced with $(src). Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
* iomap: build the block based code conditionallyChristoph Hellwig2021-12-041-2/+2
| | | | | | | | | | | Only build the block based iomap code if CONFIG_BLOCK is set. Currently that is always the case, but it will change soon. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dan Williams <dan.j.williams@intel.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Link: https://lore.kernel.org/r/20211129102203.2243509-29-hch@lst.de Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* iomap: move loop control code to iter.cDarrick J. Wong2021-08-161-1/+1
| | | | | | | | Now that we've moved iomap to the iterator model, rename this file to be in sync with the functions contained inside of it. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Dave Chinner <dchinner@redhat.com>
* iomap: lift common tracing code from xfs to iomapChristoph Hellwig2019-10-211-7/+9
| | | | | | | | | | Lift the xfs code for tracing address space operations to the iomap layer. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
* iomap: fix Invalid License IDMasahiro Yamada2019-07-251-1/+1
| | | | | | | | | | | | Detected by: $ ./scripts/spdxcheck.py fs/iomap/Makefile: 1:27 Invalid License ID: GPL-2.0-or-newer Fixes: 1c230208f53d ("iomap: start moving code to fs/iomap/") Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* iomap: move the main iteration code into a separate fileDarrick J. Wong2019-07-171-0/+1
| | | | | | | | | Move the main iteration code into a separate file so that we can group related functions in a single file instead of having a single enormous source file. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
* iomap: move the buffered IO code into a separate fileDarrick J. Wong2019-07-171-0/+1
| | | | | | | | | Move the buffered IO code into a separate file so that we can group related functions in a single file instead of having a single enormous source file. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
* iomap: move the direct IO code into a separate fileDarrick J. Wong2019-07-171-0/+1
| | | | | | | | | Move the direct IO code into a separate file so that we can group related functions in a single file instead of having a single enormous source file. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
* iomap: move the SEEK_HOLE code into a separate fileDarrick J. Wong2019-07-171-1/+2
| | | | | | | | | Move the SEEK_HOLE/SEEK_DATA code into a separate file so that we can group related functions in a single file instead of having a single enormous source file. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
* iomap: move the file mapping reporting code into a separate fileDarrick J. Wong2019-07-171-0/+3
| | | | | | | | | Move the file mapping reporting code (FIEMAP/FIBMAP) into a separate file so that we can group related functions in a single file instead of having a single enormous source file. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
* iomap: move the swapfile code into a separate fileDarrick J. Wong2019-07-171-0/+3
| | | | | | | | | Move the swapfile activation code into a separate file so that we can group related functions in a single file instead of having a single enormous source file. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
* iomap: start moving code to fs/iomap/Darrick J. Wong2019-07-151-0/+5
Create the build infrastructure we need to start migrating iomap code to fs/iomap/ from fs/iomap.c. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
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