kernel.git/fs/bio.c, branch linux-2.6.37.y

bio: take care not overflow page count when mapping/copying user data

2010-11-10T13:40:43Z

If the iovec is being set up in a way that causes uaddr + PAGE_SIZE to overflow, we could end up attempting to map a huge number of pages. Check for this invalid input type. Reported-by: Dan Rosenberg Cc: stable@kernel.org Signed-off-by: Jens Axboe

block: limit vec count in bio_kmalloc() and bio_alloc_map_data()

2010-11-10T13:40:42Z

Reported-by: Dan Rosenberg Cc: stable@kernel.org Signed-off-by: Jens Axboe

block: unify flags for struct bio and struct request

2010-08-07T16:20:39Z

Remove the current bio flags and reuse the request flags for the bio, too. This allows to more easily trace the type of I/O from the filesystem down to the block driver. There were two flags in the bio that were missing in the requests: BIO_RW_UNPLUG and BIO_RW_AHEAD. Also I've renamed two request flags that had a superflous RW in them. Note that the flags are in bio.h despite having the REQ_ name - as blkdev.h includes bio.h that is the only way to go for now. Signed-off-by: Christoph Hellwig Signed-off-by: Jens Axboe

Merge branch 'master' into for-linus

2010-03-19T07:05:10Z

Conflicts: block/Kconfig Signed-off-by: Jens Axboe

Merge branch 'for-next' into for-linus

2010-03-08T15:55:37Z

Conflicts: Documentation/filesystems/proc.txt arch/arm/mach-u300/include/mach/debug-macro.S drivers/net/qlge/qlge_ethtool.c drivers/net/qlge/qlge_main.c drivers/net/typhoon.c

blkdev: fix merge_bvec_fn return value checks v2

2010-03-08T08:10:38Z

merge_bvec_fn() returns bvec->bv_len on success. So we have to check against this value. But in case of fs_optimization merge we compare with wrong value. This patch must be included in b428cd6da7e6559aca69aa2e3a526037d3f20403 But accidentally i've forgot to add this in the initial patch. To make things straight let's replace all such checks. In fact this makes code easy to understand. Signed-off-by: Dmitry Monakhov Signed-off-by: Jens Axboe

Revert "blkdev: fix merge_bvec_fn return value checks"

2010-03-02T18:17:34Z

This reverts commit 9f7cdbc33f36d28e57eaba0093f68f0d14c38c5b. It's causing oopses om dm setups, so revert it until we investigate. Reported-by: Dmitry Torokhov Tested-by: Steven Rostedt Signed-off-by: Jens Axboe

blkdev: fix merge_bvec_fn return value checks

2010-02-28T18:47:18Z

block: Consolidate phys_segment and hw_segment limits

2010-02-26T12:58:08Z

Except for SCSI no device drivers distinguish between physical and hardware segment limits. Consolidate the two into a single segment limit. Signed-off-by: Martin K. Petersen Signed-off-by: Jens Axboe

bio: Fix outdated comment about bio_alloc_bioset()

2010-02-05T11:22:36Z

In commit 451a9ebf653d28337ba53ed5b4b70b0b9543cca1 bio_alloc_bioset() was refactored not to take NULL as a valid argument for bs. This patch changes the comment for that function accordingly. Currently, passing NULL as argument to parameter bs would result in a NULL pointer dereference. Signed-off-by: Jaak Ristioja Signed-off-by: Jiri Kosina