[V3,3/3] Documentation/fs: Move swap_[de]activate() to file_operations
diff mbox series

Message ID 20191129163300.14749-4-ira.weiny@intel.com
State New
Headers show
Series
  • Move swap functions out of address space operations
Related show

Commit Message

Ira Weiny Nov. 29, 2019, 4:33 p.m. UTC
From: Ira Weiny <ira.weiny@intel.com>

Update the documentation for the move of the swap_* functions out of
address_space_operations and into file_operations.

Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>

---
Changes from V0:
	Add to original series (now V3)
	Add reviews

 Documentation/filesystems/vfs.rst | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

Patch
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diff --git a/Documentation/filesystems/vfs.rst b/Documentation/filesystems/vfs.rst
index 7d4d09dd5e6d..03a740d7faa4 100644
--- a/Documentation/filesystems/vfs.rst
+++ b/Documentation/filesystems/vfs.rst
@@ -731,8 +731,6 @@  cache in your filesystem.  The following members are defined:
 					      unsigned long);
 		void (*is_dirty_writeback) (struct page *, bool *, bool *);
 		int (*error_remove_page) (struct mapping *mapping, struct page *page);
-		int (*swap_activate)(struct file *);
-		int (*swap_deactivate)(struct file *);
 	};
 
 ``writepage``
@@ -924,16 +922,6 @@  cache in your filesystem.  The following members are defined:
 	Setting this implies you deal with pages going away under you,
 	unless you have them locked or reference counts increased.
 
-``swap_activate``
-	Called when swapon is used on a file to allocate space if
-	necessary and pin the block lookup information in memory.  A
-	return value of zero indicates success, in which case this file
-	can be used to back swapspace.
-
-``swap_deactivate``
-	Called during swapoff on files where swap_activate was
-	successful.
-
 
 The File Object
 ===============
@@ -988,6 +976,8 @@  This describes how the VFS can manipulate an open file.  As of kernel
 					   struct file *file_out, loff_t pos_out,
 					   loff_t len, unsigned int remap_flags);
 		int (*fadvise)(struct file *, loff_t, loff_t, int);
+		int (*swap_activate)(struct file *);
+		int (*swap_deactivate)(struct file *);
 	};
 
 Again, all methods are called without any locks being held, unless
@@ -1108,6 +1098,16 @@  otherwise noted.
 ``fadvise``
 	possibly called by the fadvise64() system call.
 
+``swap_activate``
+	Called when swapon is used on a file to allocate space if
+	necessary and pin the block lookup information in memory.  A
+	return value of zero indicates success, in which case this file
+	can be used to back swapspace.
+
+``swap_deactivate``
+	Called during swapoff on files where swap_activate was
+	successful.
+
 Note that the file operations are implemented by the specific
 filesystem in which the inode resides.  When opening a device node
 (character or block special) most filesystems will call special