Searched hist:"3 d14ec1f" (Results 1 – 2 of 2) sorted by relevance
/openbmc/linux/include/linux/ |
H A D | uio.h | 3d14ec1f Sun Apr 25 16:02:38 CDT 2021 David Howells <dhowells@redhat.com> iov_iter: Four fixes for ITER_XARRAY
Fix four things[1] in the patch that adds ITER_XARRAY[2]:
(1) Remove the address_space struct predeclaration. This is a holdover from when it was ITER_MAPPING.
(2) Fix _copy_mc_to_iter() so that the xarray segment updates count and iov_offset in the iterator before returning.
(3) Fix iov_iter_alignment() to not loop in the xarray case. Because the middle pages are all whole pages, only the end pages need be considered - and this can be reduced to just looking at the start position in the xarray and the iteration size.
(4) Fix iov_iter_advance() to limit the size of the advance to no more than the remaining iteration size.
Reported-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Al Viro <viro@zeniv.linux.org.uk> Tested-by: Jeff Layton <jlayton@redhat.com> Tested-by: Dave Wysochanski <dwysocha@redhat.com> Link: https://lore.kernel.org/r/YIVrJT8GwLI0Wlgx@zeniv-ca.linux.org.uk [1] Link: https://lore.kernel.org/r/161918448151.3145707.11541538916600921083.stgit@warthog.procyon.org.uk [2]
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/openbmc/linux/lib/ |
H A D | iov_iter.c | 3d14ec1f Sun Apr 25 16:02:38 CDT 2021 David Howells <dhowells@redhat.com> iov_iter: Four fixes for ITER_XARRAY
Fix four things[1] in the patch that adds ITER_XARRAY[2]:
(1) Remove the address_space struct predeclaration. This is a holdover from when it was ITER_MAPPING.
(2) Fix _copy_mc_to_iter() so that the xarray segment updates count and iov_offset in the iterator before returning.
(3) Fix iov_iter_alignment() to not loop in the xarray case. Because the middle pages are all whole pages, only the end pages need be considered - and this can be reduced to just looking at the start position in the xarray and the iteration size.
(4) Fix iov_iter_advance() to limit the size of the advance to no more than the remaining iteration size.
Reported-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Al Viro <viro@zeniv.linux.org.uk> Tested-by: Jeff Layton <jlayton@redhat.com> Tested-by: Dave Wysochanski <dwysocha@redhat.com> Link: https://lore.kernel.org/r/YIVrJT8GwLI0Wlgx@zeniv-ca.linux.org.uk [1] Link: https://lore.kernel.org/r/161918448151.3145707.11541538916600921083.stgit@warthog.procyon.org.uk [2]
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