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Diffstat (limited to 'Documentation/aoe/todo.rst')
| -rw-r--r-- | Documentation/aoe/todo.rst | 17 |
1 files changed, 0 insertions, 17 deletions
diff --git a/Documentation/aoe/todo.rst b/Documentation/aoe/todo.rst deleted file mode 100644 index dea8db5a33e1..000000000000 --- a/Documentation/aoe/todo.rst +++ /dev/null @@ -1,17 +0,0 @@ -TODO -==== - -There is a potential for deadlock when allocating a struct sk_buff for -data that needs to be written out to aoe storage. If the data is -being written from a dirty page in order to free that page, and if -there are no other pages available, then deadlock may occur when a -free page is needed for the sk_buff allocation. This situation has -not been observed, but it would be nice to eliminate any potential for -deadlock under memory pressure. - -Because ATA over Ethernet is not fragmented by the kernel's IP code, -the destructor member of the struct sk_buff is available to the aoe -driver. By using a mempool for allocating all but the first few -sk_buffs, and by registering a destructor, we should be able to -efficiently allocate sk_buffs without introducing any potential for -deadlock. |