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tree wide: use kvfree() than conditional kfree()/vfree()

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There are many locations that do

  if (memory_was_allocated_by_vmalloc)
    vfree(ptr);
  else
    kfree(ptr);

but kvfree() can handle both kmalloc()ed memory and vmalloc()ed memory
using is_vmalloc_addr().  Unless callers have special reasons, we can
replace this branch with kvfree().  Please check and reply if you found
problems.

Signed-off-by: Tetsuo Handa <[email protected]>
Acked-by: Michal Hocko <[email protected]>
Acked-by: Jan Kara <[email protected]>
Acked-by: Russell King <[email protected]>
Reviewed-by: Andreas Dilger <[email protected]>
Acked-by: "Rafael J. Wysocki" <[email protected]>
Acked-by: David Rientjes <[email protected]>
Cc: "Luck, Tony" <[email protected]>
Cc: Oleg Drokin <[email protected]>
Cc: Boris Petkov <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Tetsuo Handa 2016-01-22 15:11:02 -08:00 • committed by Linus Torvalds
commit 1d5cfdb076
17 changed files with 36 additions and 103 deletions
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6
drivers/acpi/apei/erst.c
View file

@ -32,6 +32,7 @@
#include <linux/hardirq.h>
#include <linux/pstore.h>
#include <linux/vmalloc.h>
#include <linux/mm.h> /* kvfree() */
#include <acpi/apei.h>
#include "apei-internal.h"
@ -532,10 +533,7 @@ retry:
return -ENOMEM;
memcpy(new_entries, entries,
erst_record_id_cache.len * sizeof(entries[0]));
if (erst_record_id_cache.size < PAGE_SIZE)
kfree(entries);
else
vfree(entries);
kvfree(entries);
erst_record_id_cache.entries = entries = new_entries;
erst_record_id_cache.size = new_size;
}