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authorTejun Heo <tj@kernel.org>2013-11-28 14:54:22 -0500
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-11-29 17:35:05 -0800
commit471bd7b78bd56c580e91e00a0f656ca922ab3b3c (patch)
tree20a7f9783fdd21f547fc75404b2cf702d8d4df27 /fs/sysfs/sysfs.h
parentsysfs, kernfs: introduce kernfs_ops (diff)
downloadlinux-dev-471bd7b78bd56c580e91e00a0f656ca922ab3b3c.tar.xz
linux-dev-471bd7b78bd56c580e91e00a0f656ca922ab3b3c.zip
sysfs, kernfs: add sysfs_dirent->s_attr.size
sysfs sets the size of regular files unconditionally at PAGE_SIZE and takes the size of bin files from bin_attribute. The latter is a pretty bad interface which forces bin_attribute users to create a separate copy of bin_attribute for each instance of the file - e.g. pci resource files. Add sysfs_dirent->s_attr.size so that the size can be specified separately. This unifies inode init paths of ATTR and BIN_ATTR identical and allows for generic size handling for kernfs. Unfortunately, this grows the size of sysfs_dirent by sizeof(loff_t). Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to '')
-rw-r--r--fs/sysfs/sysfs.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/sysfs/sysfs.h b/fs/sysfs/sysfs.h
index c05e0ddd0268..d40e85e8c2ee 100644
--- a/fs/sysfs/sysfs.h
+++ b/fs/sysfs/sysfs.h
@@ -29,6 +29,7 @@ struct sysfs_elem_symlink {
struct sysfs_elem_attr {
const struct kernfs_ops *ops;
struct sysfs_open_dirent *open;
+ loff_t size;
};
struct sysfs_inode_attrs {