diff options
| author | Dennis Lam <dennis.lamerice@gmail.com> | 2024-09-06 16:49:13 -0400 |
|---|---|---|
| committer | Jonathan Corbet <corbet@lwn.net> | 2024-09-10 15:31:45 -0600 |
| commit | bf78b46683229eec3a1074302851645bf43a6986 (patch) | |
| tree | ef231cae7764564e98258ac43343526ce8d931e3 | |
| parent | e6ba83cb81e84d9e2d003c5ed2749ca81843f555 (diff) | |
| download | lwn-bf78b46683229eec3a1074302851645bf43a6986.tar.gz lwn-bf78b46683229eec3a1074302851645bf43a6986.zip | |
docs:mm: fixed spelling and grammar mistakes on vmalloc kernel stack page
Signed-off-by: Dennis Lam <dennis.lamerice@gmail.com>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20240906204914.42698-2-dennis.lamerice@gmail.com>
| -rw-r--r-- | Documentation/mm/vmalloced-kernel-stacks.rst | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/Documentation/mm/vmalloced-kernel-stacks.rst b/Documentation/mm/vmalloced-kernel-stacks.rst index 4edca515bfd7..5bc0f7ceea89 100644 --- a/Documentation/mm/vmalloced-kernel-stacks.rst +++ b/Documentation/mm/vmalloced-kernel-stacks.rst @@ -110,7 +110,7 @@ Bulk of the code is in: `kernel/fork.c <https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/kernel/fork.c>`. stack_vm_area pointer in task_struct keeps track of the virtually allocated -stack and a non-null stack_vm_area pointer serves as a indication that the +stack and a non-null stack_vm_area pointer serves as an indication that the virtually mapped kernel stacks are enabled. :: @@ -120,8 +120,8 @@ virtually mapped kernel stacks are enabled. Stack overflow handling ----------------------- -Leading and trailing guard pages help detect stack overflows. When stack -overflows into the guard pages, handlers have to be careful not overflow +Leading and trailing guard pages help detect stack overflows. When the stack +overflows into the guard pages, handlers have to be careful not to overflow the stack again. When handlers are called, it is likely that very little stack space is left. @@ -148,6 +148,6 @@ Conclusions - THREAD_INFO_IN_TASK gets rid of arch-specific thread_info entirely and simply embed the thread_info (containing only flags) and 'int cpu' into task_struct. -- The thread stack can be free'ed as soon as the task is dead (without +- The thread stack can be freed as soon as the task is dead (without waiting for RCU) and then, if vmapped stacks are in use, cache the entire stack for reuse on the same cpu. |