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fd: partially deduplicate fdescfree and fdescfree_remapped

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This also moves vrele of cdir/rdir/jdir vnodes earlier, which should not
matter.
This commit is contained in:
Mateusz Guzik 2015-07-16 15:26:37 +00:00
parent cd672ca60f
commit 2919a0c5c1
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=285636
1 changed files with 37 additions and 49 deletions
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86
sys/kern/kern_descrip.c
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@ -2110,17 +2110,45 @@ fdclearlocks(struct thread *td)
/*
* Release a filedesc structure.
*/
static void
fdescfree_fds(struct thread *td, struct filedesc *fdp, bool needclose)
{
struct filedesc0 *fdp0;
struct freetable *ft, *tft;
struct filedescent *fde;
struct file *fp;
int i;
for (i = 0; i <= fdp->fd_lastfile; i++) {
fde = &fdp->fd_ofiles[i];
fp = fde->fde_file;
if (fp != NULL) {
fdefree_last(fde);
if (needclose)
(void) closef(fp, td);
else
fdrop(fp, td);
}
}
if (NDSLOTS(fdp->fd_nfiles) > NDSLOTS(NDFILE))
free(fdp->fd_map, M_FILEDESC);
if (fdp->fd_nfiles > NDFILE)
free(fdp->fd_files, M_FILEDESC);
fdp0 = (struct filedesc0 *)fdp;
SLIST_FOREACH_SAFE(ft, &fdp0->fd_free, ft_next, tft)
free(ft->ft_table, M_FILEDESC);
fddrop(fdp);
}
void
fdescfree(struct thread *td)
{
struct proc *p;
struct filedesc0 *fdp0;
struct filedesc *fdp;
struct freetable *ft, *tft;
struct filedescent *fde;
struct file *fp;
struct vnode *cdir, *jdir, *rdir;
int i;
p = td->td_proc;
fdp = p->p_fd;
@ -2134,7 +2162,7 @@ fdescfree(struct thread *td)
}
#endif
if (td->td_proc->p_fdtol != NULL)
if (p->p_fdtol != NULL)
fdclearlocks(td);
PROC_LOCK(p);
@ -2153,24 +2181,6 @@ fdescfree(struct thread *td)
fdp->fd_jdir = NULL;
FILEDESC_XUNLOCK(fdp);
for (i = 0; i <= fdp->fd_lastfile; i++) {
fde = &fdp->fd_ofiles[i];
fp = fde->fde_file;
if (fp != NULL) {
fdefree_last(fde);
(void) closef(fp, td);
}
}
if (NDSLOTS(fdp->fd_nfiles) > NDSLOTS(NDFILE))
free(fdp->fd_map, M_FILEDESC);
if (fdp->fd_nfiles > NDFILE)
free(fdp->fd_files, M_FILEDESC);
fdp0 = (struct filedesc0 *)fdp;
SLIST_FOREACH_SAFE(ft, &fdp0->fd_free, ft_next, tft)
free(ft->ft_table, M_FILEDESC);
if (cdir != NULL)
vrele(cdir);
if (rdir != NULL)
@ -2178,35 +2188,12 @@ fdescfree(struct thread *td)
if (jdir != NULL)
vrele(jdir);
fddrop(fdp);
fdescfree_fds(td, fdp, 1);
}
void
fdescfree_remapped(struct filedesc *fdp)
{
struct filedesc0 *fdp0;
struct filedescent *fde;
struct file *fp;
struct freetable *ft, *tft;
int i;
for (i = 0; i <= fdp->fd_lastfile; i++) {
fde = &fdp->fd_ofiles[i];
fp = fde->fde_file;
if (fp != NULL) {
fdefree_last(fde);
(void) closef(fp, NULL);
}
}
if (NDSLOTS(fdp->fd_nfiles) > NDSLOTS(NDFILE))
free(fdp->fd_map, M_FILEDESC);
if (fdp->fd_nfiles > NDFILE)
free(fdp->fd_files, M_FILEDESC);
fdp0 = (struct filedesc0 *)fdp;
SLIST_FOREACH_SAFE(ft, &fdp0->fd_free, ft_next, tft)
free(ft->ft_table, M_FILEDESC);
if (fdp->fd_cdir != NULL)
vrele(fdp->fd_cdir);
@ -2214,7 +2201,8 @@ fdescfree_remapped(struct filedesc *fdp)
vrele(fdp->fd_rdir);
if (fdp->fd_jdir != NULL)
vrele(fdp->fd_jdir);
fddrop(fdp);
fdescfree_fds(curthread, fdp, 0);
}
/*