bigfile: Fix typos

bigfile/_bigfile.c

@@ -50,7 +50,7 @@ static PyObject *pybuf_str;
 
 /* whether to pass old buffer instead of memoryview to .loadblk() / .storeblk()
  *
- * on python2 < 2.7.10 memoreview object is not accepted in a lot of
+ * on python2 < 2.7.10 memoryview object is not accepted in a lot of
  * places, see e.g. http://bugs.python.org/issue22113 for struct.pack_into()
  *
  * also on python 2.7.10, even latest numpy does not accept memoryview as
@@ -171,7 +171,7 @@ void XPyObject_PrintReferrers(PyObject *obj, FILE *fp);
 static int XPyFrame_IsCalleeOf(PyFrameObject *f, PyFrameObject *top);
 
 /* buffer utilities: unpin buffer from its memory - make it zero-length
- * pointing to NULL but staying a vailid python object */
+ * pointing to NULL but staying a valid python object */
 #if PY_MAJOR_VERSION < 3
 void XPyBufferObject_Unpin(PyBufferObject *bufo);
 #endif
@@ -348,7 +348,7 @@ static /*const*/ PyMethodDef pyvma_methods[] = {
     {NULL}
 };
 
-// XXX vvv better switch on various possibilities and find approptiate type
+// XXX vvv better switch on various possibilities and find appropriate type
 // (e.g. on X32 uintptr_t will be 4 while long will be 8)
 const int _ =
     BUILD_ASSERT_OR_ZERO(sizeof(uintptr_t) == sizeof(unsigned long));
@@ -458,7 +458,7 @@ PyFunc(pyfileh_isdirty, "isdirty() - are there any changes to fileh memory at al
     if (!PyArg_ParseTuple(args, ""))
         return NULL;
 
-    /* NOTE not strictly neccessary to virt_lock() for checking ->dirty_pages not empty */
+    /* NOTE not strictly necessary to virt_lock() for checking ->dirty_pages not empty */
     return PyBool_FromLong(!list_empty(&pyfileh->dirty_pages));
 }
 
@@ -570,14 +570,14 @@ static int pybigfile_loadblk(BigFile *file, blk_t blk, void *buf)
      * as the result - _we_ are the thread which holds the GIL and can call
      * python capi. */
     // XXX assert PyGILState_GetThisThreadState() != NULL
-    //      (i.e. pyton already knows this thread?)
+    //      (i.e. python already knows this thread?)
     gstate = PyGILState_Ensure();
 
-    /* TODO write why we setup completly new thread state which looks like
+    /* TODO write why we setup completely new thread state which looks like
      * switching threads for python but stays at the same OS thread
      *
      * a) do not change current thread state in any way;
-     * b) to completly clear ts after loadblk (ex. for pybuf->refcnf to go to exactly 1)
+     * b) to completely clear ts after loadblk (ex. for pybuf->refcnf to go to exactly 1)
      */
 
     /* in python thread state - save what we'll possibly override
@@ -690,13 +690,13 @@ out:
              * come here with gc.collecting=1
              *
              * NOTE also: while collecting garbage even more garbage can be
-             * created due to arbitrary code run from undel __del__ of released
+             * created due to arbitrary code run from under __del__ of released
              * objects and weakref callbacks. This way after here GC collect
              * even a single allocation could trigger GC, and thus arbitrary
              * python code run, again */
             PyGC_Collect();
 
-            /* garbage collection could result in running arbitraty code
+            /* garbage collection could result in running arbitrary code
              * because of finalizers. Print problems (if any) and make sure
              * once again exception state is clear */
             if (PyErr_Occurred())

bigfile/file_file.py

 # -*- coding: utf-8 -*-
 # Wendelin.bigfile | BigFile file backend
-# Copyright (C) 2014-2015  Nexedi SA and Contributors.
+# Copyright (C) 2014-2019  Nexedi SA and Contributors.
 #                          Kirill Smelkov <kirr@nexedi.com>
 #
 # This program is free software: you can Use, Study, Modify and Redistribute
@@ -25,7 +25,7 @@ from io import FileIO, SEEK_SET
 
 # XXX naming
 class BigFile_File(BigFile):
-    # .f        - io.FileIo to file
+    # .f        - io.FileIO to file
 
     def __new__(cls, path_or_fd, blksize):
         # XXX pass flags/mode as args to ctor ?
@@ -41,7 +41,7 @@ class BigFile_File(BigFile):
         f.seek(blk * blksize, SEEK_SET)
 
         # XXX unfortunately buffer(buf, pos) creates readonly buffer, so we
-        # have to use memoryviews
+        # have to use memoryview
         # XXX not needed after BIGFILE_USE_OLD_BUFFER support is dropped
         bufmem = memoryview(buf)
 

bigfile/pagefault.c

 /* Wendelin.bigfile | Low-level pagefault handler
- * Copyright (C) 2014-2015  Nexedi SA and Contributors.
+ * Copyright (C) 2014-2019  Nexedi SA and Contributors.
  *                          Kirill Smelkov <kirr@nexedi.com>
  *
  * This program is free software: you can Use, Study, Modify and Redistribute
@@ -89,7 +89,7 @@ static void on_pagefault(int sig, siginfo_t *si, void *_uc)
      * block is allocated dynamically at runtime, we can overlap with such
      * allocation only if SIGSEGV happens in that original TLS allocation,
      * which should not happen, and thus it is already a bug somewhere in
-     * thread datatructures. */
+     * thread data structures. */
     static __thread int in_on_pagefault;
     BUG_ON(in_on_pagefault);
     ++in_on_pagefault;

bigfile/virtmem.c

 /* Wendelin.bigfile | Virtual memory
- * Copyright (C) 2014-2015  Nexedi SA and Contributors.
+ * Copyright (C) 2014-2019  Nexedi SA and Contributors.
  *                          Kirill Smelkov <kirr@nexedi.com>
  *
  * This program is free software: you can Use, Study, Modify and Redistribute
@@ -57,7 +57,7 @@ static int      __ram_reclaim(RAM *ram);
 /* global lock which protects manipulating virtmem data structures
  *
  * NOTE not scalable, but this is temporary solution - as we are going to move
- * memory managment back into the kernel, where it is done properly. */
+ * memory management back into the kernel, where it is done properly. */
 static pthread_mutex_t virtmem_lock = PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP;
 static const VirtGilHooks *virtmem_gilhooks;
 
@@ -711,7 +711,7 @@ VMFaultResult vma_on_pagefault(VMA *vma, uintptr_t addr, int write)
 
     /* (5b) page is currently being loaded by another thread - wait for load to complete
      *
-     * NOTE a page is protected from being concurently loaded by two threads at
+     * NOTE a page is protected from being concurrently loaded by two threads at
      * the same time via:
      *
      *   - virtmem lock - we get/put pages from fileh->pagemap only under it
@@ -726,7 +726,7 @@ VMFaultResult vma_on_pagefault(VMA *vma, uintptr_t addr, int write)
         void *gilstate;
         virt_unlock();
         gilstate = virt_gil_ensure_unlocked();
-        usleep(10000);  // XXX with 1000 uslepp still busywaits
+        usleep(10000);  // XXX with 1000 usleep still busywaits
         virt_gil_retake_if_waslocked(gilstate);
         virt_lock();
         return VM_RETRY;
@@ -861,7 +861,7 @@ void page_decref(Page *page)
 void *page_mmap(Page *page, void *addr, int prot)
 {
     RAMH *ramh = page->ramh;
-    // XXX better call ramh_mmap_page() without tinkering wih ramh_ops?
+    // XXX better call ramh_mmap_page() without tinkering with ramh_ops?
     return ramh->ramh_ops->mmap_page(ramh, page->ramh_pgoffset, addr, prot);
 }