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Diffstat (limited to 'fs/ocfs2/file.c')
-rw-r--r--fs/ocfs2/file.c22
1 files changed, 18 insertions, 4 deletions
diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index 77b4c04a280..bdadbae0909 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -1307,10 +1307,13 @@ bail:
return err;
}
-int ocfs2_permission(struct inode *inode, int mask)
+int ocfs2_permission(struct inode *inode, int mask, unsigned int flags)
{
int ret;
+ if (flags & IPERM_FLAG_RCU)
+ return -ECHILD;
+
mlog_entry_void();
ret = ocfs2_inode_lock(inode, NULL, 0);
@@ -1320,7 +1323,7 @@ int ocfs2_permission(struct inode *inode, int mask)
goto out;
}
- ret = generic_permission(inode, mask, ocfs2_check_acl);
+ ret = generic_permission(inode, mask, flags, ocfs2_check_acl);
ocfs2_inode_unlock(inode, 0);
out:
@@ -2241,11 +2244,15 @@ static ssize_t ocfs2_file_aio_write(struct kiocb *iocb,
mutex_lock(&inode->i_mutex);
+ ocfs2_iocb_clear_sem_locked(iocb);
+
relock:
/* to match setattr's i_mutex -> i_alloc_sem -> rw_lock ordering */
if (direct_io) {
down_read(&inode->i_alloc_sem);
have_alloc_sem = 1;
+ /* communicate with ocfs2_dio_end_io */
+ ocfs2_iocb_set_sem_locked(iocb);
}
/*
@@ -2382,8 +2389,10 @@ out:
ocfs2_rw_unlock(inode, rw_level);
out_sems:
- if (have_alloc_sem)
+ if (have_alloc_sem) {
up_read(&inode->i_alloc_sem);
+ ocfs2_iocb_clear_sem_locked(iocb);
+ }
mutex_unlock(&inode->i_mutex);
@@ -2527,6 +2536,8 @@ static ssize_t ocfs2_file_aio_read(struct kiocb *iocb,
goto bail;
}
+ ocfs2_iocb_clear_sem_locked(iocb);
+
/*
* buffered reads protect themselves in ->readpage(). O_DIRECT reads
* need locks to protect pending reads from racing with truncate.
@@ -2534,6 +2545,7 @@ static ssize_t ocfs2_file_aio_read(struct kiocb *iocb,
if (filp->f_flags & O_DIRECT) {
down_read(&inode->i_alloc_sem);
have_alloc_sem = 1;
+ ocfs2_iocb_set_sem_locked(iocb);
ret = ocfs2_rw_lock(inode, 0);
if (ret < 0) {
@@ -2575,8 +2587,10 @@ static ssize_t ocfs2_file_aio_read(struct kiocb *iocb,
}
bail:
- if (have_alloc_sem)
+ if (have_alloc_sem) {
up_read(&inode->i_alloc_sem);
+ ocfs2_iocb_clear_sem_locked(iocb);
+ }
if (rw_level != -1)
ocfs2_rw_unlock(inode, rw_level);
mlog_exit(ret);