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authorDavid M. Richter <richterd@citi.umich.edu>2008-04-23 16:29:01 -0400
committerJ. Bruce Fields <bfields@citi.umich.edu>2008-04-25 12:58:22 -0400
commit190855576743a510219fc67886dace29b825d8cb (patch)
treef31c569aa43b5e000610e81546fce13fecf894d8 /fs/locks.c
parent288b2fd8251cb0bcb14b8a93755ef9c78de70e0f (diff)
leases: move lock allocation earlier in generic_setlease()
In generic_setlease(), the struct file_lock is allocated after tests for the presence of conflicting readers/writers is done, despite the fact that the allocation might block; this patch moves the allocation earlier. A subsequent set of patches will rely on this behavior to properly serialize between a modified __break_lease() and generic_setlease(). Signed-off-by: David M. Richter <richterd@citi.umich.edu> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Diffstat (limited to 'fs/locks.c')
-rw-r--r--fs/locks.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/fs/locks.c b/fs/locks.c
index da1d0ddb4abd..6a132cd4fa57 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -1368,6 +1368,11 @@ int generic_setlease(struct file *filp, long arg, struct file_lock **flp)
lease = *flp;
if (arg != F_UNLCK) {
+ error = -ENOMEM;
+ new_fl = locks_alloc_lock();
+ if (new_fl == NULL)
+ goto out;
+
error = -EAGAIN;
if ((arg == F_RDLCK) && (atomic_read(&inode->i_writecount) > 0))
goto out;
@@ -1375,11 +1380,6 @@ int generic_setlease(struct file *filp, long arg, struct file_lock **flp)
&& ((atomic_read(&dentry->d_count) > 1)
|| (atomic_read(&inode->i_count) > 1)))
goto out;
-
- error = -ENOMEM;
- new_fl = locks_alloc_lock();
- if (new_fl == NULL)
- goto out;
}
/*

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