hugetlbfs: use i_mmap_rwsem for more pmd sharing synchronization

[linux-2.6-microblaze.git] / include / linux / fs.h

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 593e911..f81c822 100644 (file)
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -526,6 +526,11 @@ static inline void i_mmap_lock_write(struct address_space *mapping)
        down_write(&mapping->i_mmap_rwsem);
 }
 
+static inline int i_mmap_trylock_write(struct address_space *mapping)
+{
+       return down_write_trylock(&mapping->i_mmap_rwsem);
+}
+
 static inline void i_mmap_unlock_write(struct address_space *mapping)
 {
        up_write(&mapping->i_mmap_rwsem);
@@ -2982,6 +2987,7 @@ extern int do_pipe_flags(int *, int);
        id(UNKNOWN, unknown)            \
        id(FIRMWARE, firmware)          \
        id(FIRMWARE_PREALLOC_BUFFER, firmware)  \
+       id(FIRMWARE_EFI_EMBEDDED, firmware)     \
        id(MODULE, kernel-module)               \
        id(KEXEC_IMAGE, kexec-image)            \
        id(KEXEC_INITRAMFS, kexec-initramfs)    \
@@ -3012,6 +3018,8 @@ extern int kernel_read_file(struct file *, void **, loff_t *, loff_t,
                            enum kernel_read_file_id);
 extern int kernel_read_file_from_path(const char *, void **, loff_t *, loff_t,
                                      enum kernel_read_file_id);
+extern int kernel_read_file_from_path_initns(const char *, void **, loff_t *, loff_t,
+                                            enum kernel_read_file_id);
 extern int kernel_read_file_from_fd(int, void **, loff_t *, loff_t,
                                    enum kernel_read_file_id);
 extern ssize_t kernel_read(struct file *, void *, size_t, loff_t *);