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Document ->tmpfile()

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Change-Id: I0e97c3fbf0e9afe684d4bf6db8d3d4958e4b07a6
This commit is contained in:
Al Viro 2013-07-03 16:19:23 +04:00 committed by Artem Borisov
parent 2813fb51b6
commit dbf30d7d0d
2 changed files with 7 additions and 0 deletions
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2
Documentation/filesystems/Locking
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@ -65,6 +65,7 @@ prototypes:
int (*atomic_open)(struct inode *, struct dentry *,
struct file *, unsigned open_flag,
umode_t create_mode, int *opened);
int (*tmpfile) (struct inode *, struct dentry *, umode_t);
locking rules:
all may block
@ -94,6 +95,7 @@ truncate_range: yes
fiemap: no
update_time: no
atomic_open: yes
tmpfile: no
Additionally, ->rmdir(), ->unlink() and ->rename() have ->i_mutex on
victim.

5
Documentation/filesystems/vfs.txt
View file

@ -366,6 +366,8 @@ struct inode_operations {
void (*truncate_range)(struct inode *, loff_t, loff_t);
void (*update_time)(struct inode *, struct timespec *, int);
int (*atomic_open)(struct inode *, struct dentry *,
int (*tmpfile) (struct inode *, struct dentry *, umode_t);
} ____cacheline_aligned;
struct file *, unsigned open_flag,
umode_t create_mode, int *opened);
};
@ -491,6 +493,9 @@ otherwise noted.
component is negative or needs lookup. Cached positive dentries are
still handled by f_op->open().
tmpfile: called in the end of O_TMPFILE open(). Optional, equivalent to
atomically creating, opening and unlinking a file in given directory.
The Address Space Object
========================