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* block: change config option name for cmdline partition parsingPaul Gortmaker2013-09-30
| | | | | | | | | | | | | | | | | | | | | | | | Recently commit bab55417b10c ("block: support embedded device command line partition") introduced CONFIG_CMDLINE_PARSER. However, that name is too generic and sounds like it enables/disables generic kernel boot arg processing, when it really is block specific. Before this option becomes a part of a full/final release, add the BLK_ prefix to it so that it is clear in absence of any other context that it is block specific. In addition, fix up the following less critical items: - help text was not really at all helpful. - index file for Documentation was not updated - add the new arg to Documentation/kernel-parameters.txt - clarify wording in source comments Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Cai Zhiyong <caizhiyong@huawei.com> Cc: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* block: support embedded device command line partitionCai Zhiyong2013-09-11
| | | | | | | | | | | | | | | | | | | | | | | | | Read block device partition table from command line. The partition used for fixed block device (eMMC) embedded device. It is no MBR, save storage space. Bootloader can be easily accessed by absolute address of data on the block device. Users can easily change the partition. This code reference MTD partition, source "drivers/mtd/cmdlinepart.c" About the partition verbose reference "Documentation/block/cmdline-partition.txt" [akpm@linux-foundation.org: fix printk text] [yongjun_wei@trendmicro.com.cn: fix error return code in parse_parts()] Signed-off-by: Cai Zhiyong <caizhiyong@huawei.com> Cc: Karel Zak <kzak@redhat.com> Cc: "Wanglin (Albert)" <albert.wanglin@huawei.com> Cc: Marius Groeger <mag@sysgo.de> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Jens Axboe <axboe@kernel.dk> Cc: Brian Norris <computersforpeace@gmail.com> Cc: Artem Bityutskiy <dedekind@infradead.org> Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* partitions: add aix lvm partition support filesPhilippe De Muyter2013-07-09
| | | | | | | | | | | | | | | | | | | | Add partitions/aix.h and partitions/aix.c. AIX LVM permits to make "logical volumes" which are made of multiple slices of multiple disks. The new code allows only access to the "logical volumes" which are made of one slice on the probed disk, a slice being a contiguous disk area. The code also detects "logical volumes" made of multiple slices on the probed disk, but can not describe them to the partition layer, because the partition layer generic code does not support that. When such non-contiguous "logical volumes" are detected, a diagnostic message is printed. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Philippe De Muyter <phdm@macqel.be> Cc: Karel Zak <kzak@redhat.com> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* partitions: enable EFI/GPT support by defaultDiego Calleja2012-12-06
| | | | | | | | | | | | | | | | | The Kconfig currently enables MSDOS partitions by default because they are assumed to be essential, but it's necessary to enable "advanced partition selection" in order to get GPT support. IMO GPT partitions are becoming common enought to deserve the same treatment MSDOS partitions get. (Side note: I got bit by a disk that had MSDOS and GPT partition tables, but for some reason the MSDOS table was different from the GPT one. I was stupid enought to disable "advanced partition selection" in my .config, which disabled GPT partitioning and made my btrfs pool unbootable because it couldn't find the partitions) Signed-off-by: Diego Calleja <diegocg@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* move fs/partitions to block/Al Viro2012-01-03
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>