linux/drivers/block/Kconfig, branch v2.6.19

Fix bytes <-> kilobytes typo in Kconfig for ramdisk

2006-10-03T21:40:34Z

This is a small fix for a typo in Kconfig. The default value for the block size is 1024 bytes not 1024 kilobytes. Signed-off-by: Christian Borntraeger Signed-off-by: Adrian Bunk

remove mentionings of devfs in documentation

2006-10-03T20:17:48Z

Now that devfs is removed, there's no longer any need to document how to do this or that with devfs. This patch includes some improvements by Joe Perches. Signed-off-by: Adrian Bunk

[PATCH] BLOCK: Make it possible to disable the block layer [try #6]

2006-09-30T18:52:31Z

Make it possible to disable the block layer. Not all embedded devices require it, some can make do with just JFFS2, NFS, ramfs, etc - none of which require the block layer to be present. This patch does the following: (*) Introduces CONFIG_BLOCK to disable the block layer, buffering and blockdev support. (*) Adds dependencies on CONFIG_BLOCK to any configuration item that controls an item that uses the block layer. This includes: (*) Block I/O tracing. (*) Disk partition code. (*) All filesystems that are block based, eg: Ext3, ReiserFS, ISOFS. (*) The SCSI layer. As far as I can tell, even SCSI chardevs use the block layer to do scheduling. Some drivers that use SCSI facilities - such as USB storage - end up disabled indirectly from this. (*) Various block-based device drivers, such as IDE and the old CDROM drivers. (*) MTD blockdev handling and FTL. (*) JFFS - which uses set_bdev_super(), something it could avoid doing by taking a leaf out of JFFS2's book. (*) Makes most of the contents of linux/blkdev.h, linux/buffer_head.h and linux/elevator.h contingent on CONFIG_BLOCK being set. sector_div() is, however, still used in places, and so is still available. (*) Also made contingent are the contents of linux/mpage.h, linux/genhd.h and parts of linux/fs.h. (*) Makes a number of files in fs/ contingent on CONFIG_BLOCK. (*) Makes mm/bounce.c (bounce buffering) contingent on CONFIG_BLOCK. (*) set_page_dirty() doesn't call __set_page_dirty_buffers() if CONFIG_BLOCK is not enabled. (*) fs/no-block.c is created to hold out-of-line stubs and things that are required when CONFIG_BLOCK is not set: (*) Default blockdev file operations (to give error ENODEV on opening). (*) Makes some /proc changes: (*) /proc/devices does not list any blockdevs. (*) /proc/diskstats and /proc/partitions are contingent on CONFIG_BLOCK. (*) Makes some compat ioctl handling contingent on CONFIG_BLOCK. (*) If CONFIG_BLOCK is not defined, makes sys_quotactl() return -ENODEV if given command other than Q_SYNC or if a special device is specified. (*) In init/do_mounts.c, no reference is made to the blockdev routines if CONFIG_BLOCK is not defined. This does not prohibit NFS roots or JFFS2. (*) The bdflush, ioprio_set and ioprio_get syscalls can now be absent (return error ENOSYS by way of cond_syscall if so). (*) The seclvl_bd_claim() and seclvl_bd_release() security calls do nothing if CONFIG_BLOCK is not set, since they can't then happen. Signed-Off-By: David Howells Signed-off-by: Jens Axboe

[PATCH] ramdisk blocksize Kconfig entry

2006-07-15T04:53:53Z

Make the ramdisk blocksize configurable at kernel compilation time rather than only at boot or module load time, like a couple of the other ramdisk options. I found this handy awhile back but thought little of it, until recently asked by a few of the testing folks here to be able to do the same thing for their automated test setups. The Kconfig comment is largely lifted from comments in rd.c, and hopefully this will increase the chances of making folks aware that the default value often isn't a great choice here (for increasing values of PAGE_SIZE, even moreso). Signed-off-by: Nathan Scott Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] frv: initrd is grossly broken on frv (never built)

2006-06-23T14:42:55Z

The FRV arch doesn't currently support initrd, so it should be disabled automatically for the moment. Signed-off-by: Al Viro Signed-off-by: David Howells Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] let BLK_DEV_RAM_COUNT depend on BLK_DEV_RAM

2006-03-28T17:16:02Z

It's purely cosmetic, but with the patch there's no longer a BLK_DEV_RAM_COUNT setting in the .config if BLK_DEV_RAM=n. Signed-off-by: Adrian Bunk Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] Update documentation for BLK_DEV_INITRD to match current usage

2006-03-26T16:56:58Z

Cc: Al Viro Cc: Christoph Hellwig Cc: Zdenek Pavlas Signed-off-by: H. Peter Anvin Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] BLK_DEV_INITRD: do not require BLK_DEV_RAM=y

2006-03-25T16:22:57Z

Initramfs initrd images do not need a ramdisk device, so remove this restriction in Kconfig. BLK_DEV_RAM=n saves about 13k on i386. Also without ramdisk device there's no need for "dry run", so initramfs unpacks much faster. People using cramfs, squashfs, or gzipped ext2/minix initrd images are probably smart enough not to turn off ramdisk support by accident. Cc: Al Viro Cc: Christoph Hellwig Cc: "H. Peter Anvin" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] pktcdvd: Don't waste kernel memory

2006-02-05T19:06:52Z

Allocate memory for read-gathering at open time, when it is known just how much memory is needed. This avoids wasting kernel memory when the real packet size is smaller than the maximum packet size supported by the driver. This is always the case when using DVD discs. Signed-off-by: Peter Osterlund Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] Let CDROM_PKTCDVD_WCACHE depend on EXPERIMENTAL

2006-02-05T19:06:52Z

Unless the help text is outdated, this seems to be logical. Signed-off-by: Adrian Bunk Signed-off-by: Peter Osterlund Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds