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| author |   Trond Myklebust <trond.myklebust@hammerspace.com> | 2020-04-13 15:55:21 -0400 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@hammerspace.com> | 2020-04-13 15:55:21 -0400 |
| commit | fbf4bcc9a8373122881909331f2f9566a128126e (patch) | |
| tree | 8ab1e8a6c18cc76d2e520dc6095cbead15847f81 /fs/buffer.c | |
| parent | Linux 5.7-rc1 (diff) | |
| download | linux-dev-fbf4bcc9a8373122881909331f2f9566a128126e.tar.xz linux-dev-fbf4bcc9a8373122881909331f2f9566a128126e.zip | |
NFS: Fix an ABBA spinlock issue in pnfs_update_layout()
We need to drop the inode spinlock while calling nfs4_select_rw_stateid(),
since nfs4_copy_delegation_stateid() could take the delegation lock.
Note that it is safe to do this, since all other calls to
pnfs_update_layout() for that inode will find themselves blocked by
the lock we hold on NFS_LAYOUT_FIRST_LAYOUTGET.
Fixes: fc51b1cf391d ("NFS: Beware when dereferencing the delegation cred")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Diffstat (limited to 'fs/buffer.c')
0 files changed, 0 insertions, 0 deletions