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Implement areleasef()

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Signed-off-by: Richard Yao <ryao@gentoo.org>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #449
This commit is contained in:
Richard Yao
2015-02-17 10:12:56 -05:00
committed by Brian Behlendorf
parent 313b1ea622
commit d3c677bcd3
4 changed files with 60 additions and 5 deletions
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module/spl/spl-vnode.c
+14 -5
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@@ -623,14 +623,14 @@ EXPORT_SYMBOL(vn_space);
/* Function must be called while holding the vn_file_lock */
static file_t *
file_find(int fd)
file_find(int fd, struct task_struct *task)
{
file_t *fp;
ASSERT(spin_is_locked(&vn_file_lock));
list_for_each_entry(fp, &vn_file_list, f_list) {
if (fd == fp->f_fd && fp->f_task == current) {
if (fd == fp->f_fd && fp->f_task == task) {
ASSERT(atomic_read(&fp->f_ref) != 0);
return fp;
}
@@ -654,7 +654,7 @@ vn_getf(int fd)
/* Already open just take an extra reference */
spin_lock(&vn_file_lock);
fp = file_find(fd);
fp = file_find(fd, current);
if (fp) {
atomic_inc(&fp->f_ref);
spin_unlock(&vn_file_lock);
@@ -733,14 +733,22 @@ static void releasef_locked(file_t *fp)
void
vn_releasef(int fd)
{
areleasef(fd, P_FINFO(current));
}
EXPORT_SYMBOL(releasef);
void
vn_areleasef(int fd, uf_info_t *fip)
{
file_t *fp;
struct task_struct *task = (struct task_struct *)fip;
if (fd < 0)
return;
spin_lock(&vn_file_lock);
fp = file_find(fd);
fp = file_find(fd, task);
if (fp) {
atomic_dec(&fp->f_ref);
if (atomic_read(&fp->f_ref) > 0) {
@@ -755,7 +763,8 @@ vn_releasef(int fd)
return;
} /* releasef() */
EXPORT_SYMBOL(releasef);
EXPORT_SYMBOL(areleasef);
static void
#ifdef HAVE_SET_FS_PWD_WITH_CONST