vfs: separate FMODE_PREAD/FMODE_PWRITE into separate flags

[pandora-kernel.git] / include / linux / fs.h

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 580b513..909e13e 100644 (file)
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -63,18 +63,23 @@ extern int dir_notify_enable;
 #define MAY_ACCESS 16
 #define MAY_OPEN 32
 
-#define FMODE_READ 1
-#define FMODE_WRITE 2
-
-/* Internal kernel extensions */
-#define FMODE_LSEEK    4
-#define FMODE_PREAD    8
-#define FMODE_PWRITE   FMODE_PREAD     /* These go hand in hand */
+/*
+ * flags in file.f_mode.  Note that FMODE_READ and FMODE_WRITE must correspond
+ * to O_WRONLY and O_RDWR via the strange trick in __dentry_open()
+ */
 
-/* File is being opened for execution. Primary users of this flag are
-   distributed filesystems that can use it to achieve correct ETXTBUSY
-   behavior for cross-node execution/opening_for_writing of files */
-#define FMODE_EXEC     16
+/* file is open for reading */
+#define FMODE_READ             (1)
+/* file is open for writing */
+#define FMODE_WRITE            (2)
+/* file is seekable */
+#define FMODE_LSEEK            (4)
+/* file can be accessed using pread */
+#define FMODE_PREAD            (8)
+/* file can be accessed using pwrite */
+#define FMODE_PWRITE           (16)
+/* File is opened for execution with sys_execve / sys_uselib */
+#define FMODE_EXEC             (32)
 
 #define RW_MASK                1
 #define RWA_MASK       2
@@ -403,6 +408,9 @@ enum positive_aop_returns {
 
 #define AOP_FLAG_UNINTERRUPTIBLE       0x0001 /* will not do a short write */
 #define AOP_FLAG_CONT_EXPAND           0x0002 /* called from cont_expand */
+#define AOP_FLAG_NOFS                  0x0004 /* used by filesystem to direct
+                                               * helper code (eg buffer layer)
+                                               * to clear GFP_FS from alloc */
 
 /*
  * oh the beauties of C type declarations.
@@ -1077,7 +1085,6 @@ struct super_block {
        struct rw_semaphore     s_umount;
        struct mutex            s_lock;
        int                     s_count;
-       int                     s_syncing;
        int                     s_need_sync_fs;
        atomic_t                s_active;
 #ifdef CONFIG_SECURITY
@@ -1959,7 +1966,7 @@ extern int page_readlink(struct dentry *, char __user *, int);
 extern void *page_follow_link_light(struct dentry *, struct nameidata *);
 extern void page_put_link(struct dentry *, struct nameidata *, void *);
 extern int __page_symlink(struct inode *inode, const char *symname, int len,
-               gfp_t gfp_mask);
+               int nofs);
 extern int page_symlink(struct inode *inode, const char *symname, int len);
 extern const struct inode_operations page_symlink_inode_operations;
 extern int generic_readlink(struct dentry *, char __user *, int);