Andreas Gruenbacher 631f871f07 fs/iomap: Fix buffered write page prefaulting ... When part of the user buffer passed to generic_perform_write() or iomap_file_buffered_write() cannot be faulted in for reading, the entire write currently fails. The correct behavior would be to write all the data that can be written, up to the point of failure. Commit a6294593e8 ("iov_iter: Turn iov_iter_fault_in_readable into fault_in_iov_iter_readable") gave us the information needed, so fix the page prefaulting in generic_perform_write() and iomap_write_iter() to only bail out when no pages could be faulted in. We already factor in that pages that are faulted in may no longer be resident by the time they are accessed. Paging out pages has the same effect as not faulting in those pages in the first place, so the code can already deal with that. Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Reviewed-by: Christoph Hellwig <hch@lst.de>		2022-03-25 15:14:03 +01:00
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buffered-io.c	fs/iomap: Fix buffered write page prefaulting	2022-03-25 15:14:03 +01:00
direct-io.c	gfs2: Fix mmap + page fault deadlocks	2021-11-02 12:25:03 -07:00
fiemap.c	iomap: switch iomap_bmap to use iomap_iter	2021-08-16 21:26:33 -07:00
iter.c	iomap: move loop control code to iter.c	2021-08-16 21:26:33 -07:00
Makefile	iomap: move loop control code to iter.c	2021-08-16 21:26:33 -07:00
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: lift common tracing code from xfs to iomap	2019-10-21 08:51:59 -07:00
trace.h	iomap: standardize tracepoint formatting and storage	2021-08-26 09:18:53 -07:00