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path: root/fs/iomap/seek.c
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2025-07-14iomap: header dietChristoph Hellwig
Drop various unused #include statements. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/20250710133343.399917-2-hch@lst.de Reviewed-by: Joanne Koong <joannelkoong@gmail.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-02-26iomap: rename iomap_iter processed field to statusBrian Foster
The iter.processed field name is no longer appropriate now that iomap operations do not return the number of bytes processed. Rename the field to iter.status to reflect that a success or error code is expected. Also change the type to int as there is no longer a need for an s64. This reduces the size of iomap_iter by 8 bytes due to a combination of smaller type and reduction in structure padding. While here, fix up the return types of various _iter() helpers to reflect the type change. Signed-off-by: Brian Foster <bfoster@redhat.com> Link: https://lore.kernel.org/r/20250224144757.237706-12-bfoster@redhat.com Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: "Darrick J. Wong" <djwong@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-02-26iomap: convert misc simple ops to incremental advanceBrian Foster
Update several of the remaining iomap operations to advance the iter directly rather than via return value. This includes page faults, fiemap, seek data/hole and swapfile activation. Signed-off-by: Brian Foster <bfoster@redhat.com> Link: https://lore.kernel.org/r/20250224144757.237706-4-bfoster@redhat.com Reviewed-by: "Darrick J. Wong" <djwong@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>
2021-08-16iomap: switch iomap_seek_data to use iomap_iterChristoph Hellwig
Rewrite iomap_seek_data to use iomap_iter. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2021-08-16iomap: switch iomap_seek_hole to use iomap_iterChristoph Hellwig
Rewrite iomap_seek_hole to use iomap_iter. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2021-07-15iomap: remove the length variable in iomap_seek_holeChristoph Hellwig
The length variable is rather pointless given that it can be trivially deduced from offset and size. Also the initial calculation can lead to KASAN warnings. Signed-off-by: Christoph Hellwig <hch@lst.de> Reported-by: Leizhen (ThunderTown) <thunder.leizhen@huawei.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
2021-07-15iomap: remove the length variable in iomap_seek_dataChristoph Hellwig
The length variable is rather pointless given that it can be trivially deduced from offset and size. Also the initial calculation can lead to KASAN warnings. Signed-off-by: Christoph Hellwig <hch@lst.de> Reported-by: Leizhen (ThunderTown) <thunder.leizhen@huawei.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
2021-02-26iomap: use mapping_seek_hole_dataMatthew Wilcox (Oracle)
Enhance mapping_seek_hole_data() to handle partially uptodate pages and convert the iomap seek code to call it. Link: https://lkml.kernel.org/r/20201112212641.27837-9-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Christoph Hellwig <hch@lst.de> Cc: Dave Chinner <dchinner@redhat.com> Cc: Hugh Dickins <hughd@google.com> Cc: Jan Kara <jack@suse.cz> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: William Kucharski <william.kucharski@oracle.com> Cc: Yang Shi <yang.shi@linux.alibaba.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-23treewide: Use fallthrough pseudo-keywordGustavo A. R. Silva
Replace the existing /* fall through */ comments and its variants with the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary fall-through markings when it is the case. [1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
2019-10-21iomap: use a srcmap for a read-modify-write I/OGoldwyn Rodrigues
The srcmap is used to identify where the read is to be performed from. It is passed to ->iomap_begin, which can fill it in if we need to read data for partially written blocks from a different location than the write target. The srcmap is only supported for buffered writes so far. Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com> [hch: merged two patches, removed the IOMAP_F_COW flag, use iomap as srcmap if not set, adjust length down to srcmap end as well] Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Acked-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
2019-07-17iomap: move internal declarations into fs/iomap/Darrick J. Wong
Move internal function declarations out of fs/internal.h into include/linux/iomap.h so that our transition is complete. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2019-07-17iomap: move the SEEK_HOLE code into a separate fileDarrick J. Wong
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>