https://github.com/torvalds/linux
Revision ae5758a1a7b7bdfdcfaf2d78a5a0f8675149dd79 authored by Jan Beulich on 13 December 2013, 01:12:22 UTC, committed by Linus Torvalds on 13 December 2013, 02:19:26 UTC
Commit fad1a86e25e0 ("procfs: call default get_unmapped_area on MMU-present architectures"), as its title says, took care of only the MMU case, leaving the !MMU side still in the regressed state (returning -EIO in all cases where pde->proc_fops->get_unmapped_area is NULL). From the fad1a86e25e0 changelog: "Commit c4fe24485729 ("sparc: fix PCI device proc file mmap(2)") added proc_reg_get_unmapped_area in proc_reg_file_ops and proc_reg_file_ops_no_compat, by which now mmap always returns EIO if get_unmapped_area method is not defined for the target procfs file, which causes regression of mmap on /proc/vmcore. To address this issue, like get_unmapped_area(), call default current->mm->get_unmapped_area on MMU-present architectures if pde->proc_fops->get_unmapped_area, i.e. the one in actual file operation in the procfs file, is not defined" Signed-off-by: Jan Beulich <jbeulich@suse.com> Cc: HATAYAMA Daisuke <d.hatayama@jp.fujitsu.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: David S. Miller <davem@davemloft.net> Cc: <stable@vger.kernel.org> [3.12.x] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Tip revision: ae5758a1a7b7bdfdcfaf2d78a5a0f8675149dd79 authored by Jan Beulich on 13 December 2013, 01:12:22 UTC
procfs: also fix proc_reg_get_unmapped_area() for !MMU case
procfs: also fix proc_reg_get_unmapped_area() for !MMU case
Tip revision: ae5758a
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crypto | ||
drivers | ||
firmware | ||
fs | ||
include | ||
init | ||
ipc | ||
kernel | ||
lib | ||
mm | ||
net | ||
samples | ||
scripts | ||
security | ||
sound | ||
tools | ||
usr | ||
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.gitignore | -rw-r--r-- | 1.1 KB |
.mailmap | -rw-r--r-- | 4.4 KB |
COPYING | -rw-r--r-- | 18.3 KB |
CREDITS | -rw-r--r-- | 93.3 KB |
Kbuild | -rw-r--r-- | 2.5 KB |
Kconfig | -rw-r--r-- | 252 bytes |
MAINTAINERS | -rw-r--r-- | 260.9 KB |
Makefile | -rw-r--r-- | 48.2 KB |
README | -rw-r--r-- | 18.3 KB |
REPORTING-BUGS | -rw-r--r-- | 7.3 KB |
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