A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-28 18:51:56 -04:00
Code Issues Projects Releases Packages Wiki Activity

mark struct file that had write access grabbed by open()

Browse source 
new flag in ->f_mode - FMODE_WRITER.  Set by do_dentry_open() in case
when it has grabbed write access, checked by __fput() to decide whether
it wants to drop the sucker.  Allows to stop bothering with mnt_clone_write()
in alloc_file(), along with fewer special_file() checks.

Signed-off-by: Al Viro <[email protected]>
This commit is contained in:
Al Viro 2014-03-14 12:02:47 -04:00
commit 83f936c75e
4 changed files with 11 additions and 41 deletions
Download patch file Download diff file Expand all files Collapse all files

9
fs/open.c
View file

@ -670,6 +670,7 @@ static int do_dentry_open(struct file *f,
put_write_access(inode);
goto cleanup_file;
}
f->f_mode |= FMODE_WRITER;
}
f->f_mapping = inode->i_mapping;
@ -715,11 +716,9 @@ static int do_dentry_open(struct file *f,
cleanup_all:
fops_put(f->f_op);
if (f->f_mode & FMODE_WRITE) {
if (!special_file(inode->i_mode)) {
put_write_access(inode);
__mnt_drop_write(f->f_path.mnt);
}
if (f->f_mode & FMODE_WRITER) {
put_write_access(inode);
__mnt_drop_write(f->f_path.mnt);
}
cleanup_file:
path_put(&f->f_path);