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| author | David Woodhouse <dwmw2@infradead.org> | 2007-04-26 09:31:28 +0100 |
|---|---|---|
| committer | David Woodhouse <dwmw2@infradead.org> | 2007-04-26 09:31:28 +0100 |
| commit | ef2e58ea6b9931c3a4816c66593da49bb20e3b24 (patch) | |
| tree | ce7432add3becbe78de4ea06425cd2d9e91f4ada /arch/i386/lib/usercopy.c | |
| parent | 06d63cc51d47f572009138a7f3ac34d95773405d (diff) | |
| parent | de46c33745f5e2ad594c72f2cf5f490861b16ce1 (diff) | |
| download | blackbird-op-linux-ef2e58ea6b9931c3a4816c66593da49bb20e3b24.tar.gz blackbird-op-linux-ef2e58ea6b9931c3a4816c66593da49bb20e3b24.zip | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'arch/i386/lib/usercopy.c')
| -rw-r--r-- | arch/i386/lib/usercopy.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/i386/lib/usercopy.c b/arch/i386/lib/usercopy.c index d22cfc9d656c..086b3726862a 100644 --- a/arch/i386/lib/usercopy.c +++ b/arch/i386/lib/usercopy.c @@ -10,6 +10,7 @@ #include <linux/blkdev.h> #include <linux/module.h> #include <linux/backing-dev.h> +#include <linux/interrupt.h> #include <asm/uaccess.h> #include <asm/mmx.h> @@ -719,6 +720,14 @@ unsigned long __copy_to_user_ll(void __user *to, const void *from, #ifndef CONFIG_X86_WP_WORKS_OK if (unlikely(boot_cpu_data.wp_works_ok == 0) && ((unsigned long )to) < TASK_SIZE) { + /* + * When we are in an atomic section (see + * mm/filemap.c:file_read_actor), return the full + * length to take the slow path. + */ + if (in_atomic()) + return n; + /* * CPU does not honor the WP bit when writing * from supervisory mode, and due to preemption or SMP, |
