Replaced sb_start_write with sb_start_write_killable inside
mnt_want_write and mnt_want_write_file.
Signed-off-by: Marco Stornelli <marco.stornelli@xxxxxxxxx>
---
fs/namei.c | 6 ++++++
fs/namespace.c | 8 ++++++--
ipc/mqueue.c | 6 +++++-
3 files changed, 17 insertions(+), 3 deletions(-)
diff --git a/fs/namei.c b/fs/namei.c
index 57ae9c8..5f239fd 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -2750,6 +2750,8 @@ static int do_last(struct nameidata *nd, struct path *path,
retry_lookup:
if (op->open_flag & (O_CREAT | O_TRUNC | O_WRONLY | O_RDWR)) {
error = mnt_want_write(nd->path.mnt);
+ if (error == -EINTR)
+ goto out;
if (!error)
got_write = true;
/*
@@ -3053,6 +3055,10 @@ struct dentry *kern_path_create(int dfd, const char *pathname,
/* don't fail immediately if it's r/o, at least try to report other errors */
err2 = mnt_want_write(nd.path.mnt);
+ if (err2 == -EINTR) {
+ dentry = ERR_PTR(-EINTR);
+ goto out;
+ }
/*
* Do the final lookup.
*/
diff --git a/fs/namespace.c b/fs/namespace.c
index af73554..db09ecb 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -344,7 +344,9 @@ int mnt_want_write(struct vfsmount *m)
{
int ret;
- sb_start_write(m->mnt_sb);
+ ret = sb_start_write_killable(m->mnt_sb);
+ if (ret < 0)
+ return ret;
ret = __mnt_want_write(m);
if (ret)
sb_end_write(m->mnt_sb);
@@ -404,7 +406,9 @@ int mnt_want_write_file(struct file *file)
{
int ret;
- sb_start_write(file->f_path.mnt->mnt_sb);
+ ret = sb_start_write_killable(file->f_path.mnt->mnt_sb);
+ if (ret < 0)
+ return ret;
ret = __mnt_want_write_file(file);
if (ret)
sb_end_write(file->f_path.mnt->mnt_sb);
diff --git a/ipc/mqueue.c b/ipc/mqueue.c
index e4e47f6..e8fdc03 100644
--- a/ipc/mqueue.c
+++ b/ipc/mqueue.c
@@ -800,7 +800,11 @@ SYSCALL_DEFINE4(mq_open, const char __user *, u_name, int, oflag, umode_t, mode,
if (fd < 0)
goto out_putname;
- ro = mnt_want_write(mnt); /* we'll drop it in any case */
+ ro = mnt_want_write(mnt);
+ if (ro == -EINTR) {
+ fd = ro;
+ goto out_putname;
+ }
error = 0;
mutex_lock(&root->d_inode->i_mutex);
path.dentry = lookup_one_len(name->name, root, strlen(name->name));
--
1.7.3.4
--
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