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8c9b0f7bdc
The folio_hole_offset() helper returns a mix of bool and int types. The latter is to support a possible -EAGAIN error code when using nonblocking locks. This is not only confusing, but the only caller also essentially ignores errors outside of stopping the range iteration. This means an -EAGAIN error can't return directly from folio_hole_offset() and may be lost via bch2_clamp_data_hole(). Fix up the error handling and make it more readable. __filemap_get_folio() returns -ENOENT instead of NULL when no folio exists, so reuse the same error code in folio_hole_offset(). Fix up bch2_seek_pagecache_hole() to return the current offset on -ENOENT, but otherwise return unexpected error code up to the caller. Signed-off-by: Brian Foster <bfoster@redhat.com> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.