BMC/Intel-BMC/linux.git/fs/ocfs2, branch dev

ocfs2: fix shift left overflow

2015-08-07T01:39:41+00:00

When using a large volume, for example 9T volume with 2T already used, frequent creation of small files with O_DIRECT when the IO is not cluster aligned may clear sectors in the wrong place. This will cause filesystem corruption. This is because p_cpos is a u32. When calculating the corresponding sector it should be converted to u64 first, otherwise it may overflow. Signed-off-by: Joseph Qi Cc: Mark Fasheh Cc: Joel Becker Cc: [4.0+] Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

ocfs2: fix BUG in ocfs2_downconvert_thread_do_work()

2015-08-07T01:39:40+00:00

The "BUG_ON(list_empty(&osb->blocked_lock_list))" in ocfs2_downconvert_thread_do_work can be triggered in the following case: ocfs2dc has firstly saved osb->blocked_lock_count to local varibale processed, and then processes the dentry lockres. During the dentry put, it calls iput and then deletes rw, inode and open lockres from blocked list in ocfs2_mark_lockres_freeing. And this causes the variable `processed' to not reflect the number of blocked lockres to be processed, which triggers the BUG. Signed-off-by: Joseph Qi Cc: Mark Fasheh Cc: Joel Becker Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

ioctl_compat: handle FITRIM

2015-07-09T18:42:21+00:00

The FITRIM ioctl has the same arguments on 32-bit and 64-bit architectures, so we can add it to the list of compatible ioctls and drop it from compat_ioctl method of various filesystems. Signed-off-by: Mikulas Patocka Cc: Al Viro Cc: Ted Ts'o Signed-off-by: Linus Torvalds

Merge branch 'for-4.2/writeback' of git://git.kernel.dk/linux-block

2015-06-25T23:00:17+00:00

Pull cgroup writeback support from Jens Axboe: "This is the big pull request for adding cgroup writeback support. This code has been in development for a long time, and it has been simmering in for-next for a good chunk of this cycle too. This is one of those problems that has been talked about for at least half a decade, finally there's a solution and code to go with it. Also see last weeks writeup on LWN: http://lwn.net/Articles/648292/" * 'for-4.2/writeback' of git://git.kernel.dk/linux-block: (85 commits) writeback, blkio: add documentation for cgroup writeback support vfs, writeback: replace FS_CGROUP_WRITEBACK with SB_I_CGROUPWB writeback: do foreign inode detection iff cgroup writeback is enabled v9fs: fix error handling in v9fs_session_init() bdi: fix wrong error return value in cgwb_create() buffer: remove unusued 'ret' variable writeback: disassociate inodes from dying bdi_writebacks writeback: implement foreign cgroup inode bdi_writeback switching writeback: add lockdep annotation to inode_to_wb() writeback: use unlocked_inode_to_wb transaction in inode_congested() writeback: implement unlocked_inode_to_wb transaction and use it for stat updates writeback: implement [locked_]inode_to_wb_and_lock_list() writeback: implement foreign cgroup inode detection writeback: make writeback_control track the inode being written back writeback: relocate wb[_try]_get(), wb_put(), inode_{attach|detach}_wb() mm: vmscan: disable memcg direct reclaim stalling if cgroup writeback support is in use writeback: implement memcg writeback domain based throttling writeback: reset wb_domain->dirty_limit[_tstmp] when memcg domain size changes writeback: implement memcg wb_domain writeback: update wb_over_bg_thresh() to use wb_domain aware operations ...

ocfs2: mark local functions as static

2015-06-25T00:49:40+00:00

Some functions are only used locally, so mark them as static. Signed-off-by: Joseph Qi Cc: Mark Fasheh Cc: Joel Becker Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

ocfs2: use swap() in ocfs2_double_lock()

2015-06-25T00:49:40+00:00

Use kernel.h macro definition. Thanks to Julia Lawall for Coccinelle scripting support. Signed-off-by: Fabian Frederick Cc: Julia Lawall Cc: Mark Fasheh Cc: Joel Becker Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

ocfs2: use swap() in swap_refcount_rec()

2015-06-25T00:49:40+00:00

ocfs2: use swap() in dx_leaf_sort_swap()

2015-06-25T00:49:40+00:00

ocfs2: fix wrong check in ocfs2_direct_IO_get_blocks

2015-06-25T00:49:40+00:00

contig_blocks gotten from ocfs2_extent_map_get_blocks cannot be compared with clusters_to_alloc. So convert it to clusters first. Signed-off-by: Joseph Qi Reviewed-by: Weiwei Wang Cc: Mark Fasheh Cc: Joel Becker Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

ocfs2: fix NULL pointer dereference in function ocfs2_abort_trigger()

2015-06-25T00:49:39+00:00

ocfs2_abort_trigger() use bh->b_assoc_map to get sb. But there's no function to set bh->b_assoc_map in ocfs2, it will trigger NULL pointer dereference while calling this function. We can get sb from bh->b_bdev->bd_super instead of b_assoc_map. [akpm@linux-foundation.org: update comment, per Joseph] Signed-off-by: joyce.xue Cc: Joseph Qi Cc: Mark Fasheh Cc: Joel Becker Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds