Merge branch 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband

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

diff --git a/include/linux/fs.h b/include/linux/fs.h
index fd93ab7da905041938a7e59473d086d4657a152b..6d6226732c93ba96e5edf946e2c934f3e23b390b 100644 (file)
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -9,6 +9,7 @@
 #include <linux/config.h>
 #include <linux/limits.h>
 #include <linux/ioctl.h>
+#include <linux/rcuref.h>
 
 /*
  * It's silly to have NR_OPEN bigger than NR_FILE, but you can change
@@ -319,7 +320,7 @@ struct address_space_operations {
        /* Unfortunately this kludge is needed for FIBMAP. Don't use it */
        sector_t (*bmap)(struct address_space *, sector_t);
        int (*invalidatepage) (struct page *, unsigned long);
-       int (*releasepage) (struct page *, int);
+       int (*releasepage) (struct page *, gfp_t);
        ssize_t (*direct_IO)(int, struct kiocb *, const struct iovec *iov,
                        loff_t offset, unsigned long nr_segs);
        struct page* (*get_xip_page)(struct address_space *, sector_t,
@@ -573,7 +574,14 @@ struct file_ra_state {
 #define RA_FLAG_INCACHE 0x02   /* file is already in cache */
 
 struct file {
-       struct list_head        f_list;
+       /*
+        * fu_list becomes invalid after file_free is called and queued via
+        * fu_rcuhead for RCU freeing
+        */
+       union {
+               struct list_head        fu_list;
+               struct rcu_head         fu_rcuhead;
+       } f_u;
        struct dentry           *f_dentry;
        struct vfsmount         *f_vfsmnt;
        struct file_operations  *f_op;
@@ -602,7 +610,7 @@ extern spinlock_t files_lock;
 #define file_list_lock() spin_lock(&files_lock);
 #define file_list_unlock() spin_unlock(&files_lock);
 
-#define get_file(x)    atomic_inc(&(x)->f_count)
+#define get_file(x)    rcuref_inc(&(x)->f_count)
 #define file_count(x)  atomic_read(&(x)->f_count)
 
 #define        MAX_NON_LFS     ((1UL<<31) - 1)
@@ -1507,8 +1515,6 @@ extern void do_generic_mapping_read(struct address_space *mapping,
                                    loff_t *, read_descriptor_t *, read_actor_t);
 extern void
 file_ra_state_init(struct file_ra_state *ra, struct address_space *mapping);
-extern ssize_t generic_file_direct_IO(int rw, struct kiocb *iocb,
-       const struct iovec *iov, loff_t offset, unsigned long nr_segs);
 extern ssize_t generic_file_readv(struct file *filp, const struct iovec *iov, 
        unsigned long nr_segs, loff_t *ppos);
 ssize_t generic_file_writev(struct file *filp, const struct iovec *iov,