nfsd4: remove unused dl_trunc

[safe/jmp/linux-2.6] / include / linux / backing-dev.h

diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h
index 13ab79d..0ec2c59 100644 (file)
--- a/include/linux/backing-dev.h
+++ b/include/linux/backing-dev.h
@@ -24,8 +24,8 @@ struct dentry;
  */
 enum bdi_state {
        BDI_pdflush,            /* A pdflush thread is working this device */
-       BDI_write_congested,    /* The write queue is getting full */
-       BDI_read_congested,     /* The read queue is getting full */
+       BDI_async_congested,    /* The async (write) queue is getting full */
+       BDI_sync_congested,     /* The sync queue is getting full */
        BDI_unused,             /* Available bits start here */
 };
 
@@ -135,6 +135,8 @@ static inline s64 bdi_stat_sum(struct backing_dev_info *bdi,
        return sum;
 }
 
+extern void bdi_writeout_inc(struct backing_dev_info *bdi);
+
 /*
  * maximal error of a stat counter.
  */
@@ -173,6 +175,8 @@ int bdi_set_max_ratio(struct backing_dev_info *bdi, unsigned int max_ratio);
  * BDI_CAP_READ_MAP:       Can be mapped for reading
  * BDI_CAP_WRITE_MAP:      Can be mapped for writing
  * BDI_CAP_EXEC_MAP:       Can be mapped for execution
+ *
+ * BDI_CAP_SWAP_BACKED:    Count shmem/tmpfs objects as swap-backed.
  */
 #define BDI_CAP_NO_ACCT_DIRTY  0x00000001
 #define BDI_CAP_NO_WRITEBACK   0x00000002
@@ -182,6 +186,7 @@ int bdi_set_max_ratio(struct backing_dev_info *bdi, unsigned int max_ratio);
 #define BDI_CAP_WRITE_MAP      0x00000020
 #define BDI_CAP_EXEC_MAP       0x00000040
 #define BDI_CAP_NO_ACCT_WB     0x00000080
+#define BDI_CAP_SWAP_BACKED    0x00000100
 
 #define BDI_CAP_VMFLAGS \
        (BDI_CAP_READ_MAP | BDI_CAP_WRITE_MAP | BDI_CAP_EXEC_MAP)
@@ -210,18 +215,18 @@ static inline int bdi_congested(struct backing_dev_info *bdi, int bdi_bits)
 
 static inline int bdi_read_congested(struct backing_dev_info *bdi)
 {
-       return bdi_congested(bdi, 1 << BDI_read_congested);
+       return bdi_congested(bdi, 1 << BDI_sync_congested);
 }
 
 static inline int bdi_write_congested(struct backing_dev_info *bdi)
 {
-       return bdi_congested(bdi, 1 << BDI_write_congested);
+       return bdi_congested(bdi, 1 << BDI_async_congested);
 }
 
 static inline int bdi_rw_congested(struct backing_dev_info *bdi)
 {
-       return bdi_congested(bdi, (1 << BDI_read_congested)|
-                                 (1 << BDI_write_congested));
+       return bdi_congested(bdi, (1 << BDI_sync_congested) |
+                                 (1 << BDI_async_congested));
 }
 
 void clear_bdi_congested(struct backing_dev_info *bdi, int rw);
@@ -246,6 +251,11 @@ static inline bool bdi_cap_account_writeback(struct backing_dev_info *bdi)
                                      BDI_CAP_NO_WRITEBACK));
 }
 
+static inline bool bdi_cap_swap_backed(struct backing_dev_info *bdi)
+{
+       return bdi->capabilities & BDI_CAP_SWAP_BACKED;
+}
+
 static inline bool mapping_cap_writeback_dirty(struct address_space *mapping)
 {
        return bdi_cap_writeback_dirty(mapping->backing_dev_info);
@@ -256,4 +266,9 @@ static inline bool mapping_cap_account_dirty(struct address_space *mapping)
        return bdi_cap_account_dirty(mapping->backing_dev_info);
 }
 
+static inline bool mapping_cap_swap_backed(struct address_space *mapping)
+{
+       return bdi_cap_swap_backed(mapping->backing_dev_info);
+}
+
 #endif         /* _LINUX_BACKING_DEV_H */