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authorLogan Gunthorpe <logang@deltatee.com>2017-06-15 14:05:21 -0600
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-07-17 15:28:50 +0200
commit8a932f73e5b4227bf787474b44dc70b6961d6246 (patch)
treed4aee1018a99bca853584061cb4cc71afecd7266 /block/genhd.c
parenta5d31a3f81c6fb13b381951bf6163444c0257e8b (diff)
downloadlinux-0-day-8a932f73e5b4227bf787474b44dc70b6961d6246.tar.gz
char_dev: order /proc/devices by major number
Presently, the order of the char devices listed in /proc/devices is not entirely sequential. If a char device has a major number greater than CHRDEV_MAJOR_HASH_SIZE (255), it will be ordered as if its major were module 255. For example, 511 appears after 1. This patch cleans that up and prints each major number in the correct order, regardless of where they are stored in the hash table. In order to do this, we introduce CHRDEV_MAJOR_MAX as an artificial limit (chosen to be 511). It will then print all devices in major order number from 0 to the maximum. Signed-off-by: Logan Gunthorpe <logang@deltatee.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Alan Cox <alan@linux.intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'block/genhd.c')
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