diff options
| author | Eric Dumazet <edumazet@google.com> | 2017-09-08 16:15:54 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-09-08 18:26:49 -0700 |
| commit | bc9ae2247ac92fd4d962507bafa3afffff6660ff (patch) | |
| tree | 56c87a7b15fc0beb1f51e57167840e1d0fd3c917 /fs | |
| parent | 7c61bd6983b185272315722787cceacf5f5d2e7d (diff) | |
| download | linux-stable-bc9ae2247ac92fd4d962507bafa3afffff6660ff.tar.gz linux-stable-bc9ae2247ac92fd4d962507bafa3afffff6660ff.tar.bz2 linux-stable-bc9ae2247ac92fd4d962507bafa3afffff6660ff.zip | |
radix-tree: must check __radix_tree_preload() return value
__radix_tree_preload() only disables preemption if no error is returned.
So we really need to make sure callers always check the return value.
idr_preload() contract is to always disable preemption, so we need
to add a missing preempt_disable() if an error happened.
Similarly, ida_pre_get() only needs to call preempt_enable() in the
case no error happened.
Link: http://lkml.kernel.org/r/1504637190.15310.62.camel@edumazet-glaptop3.roam.corp.google.com
Fixes: 0a835c4f090a ("Reimplement IDR and IDA using the radix tree")
Fixes: 7ad3d4d85c7a ("ida: Move ida_bitmap to a percpu variable")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Matthew Wilcox <mawilcox@microsoft.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: <stable@vger.kernel.org> [4.11+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs')
0 files changed, 0 insertions, 0 deletions