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| author | Pavel Shilovsky <piastry@etersoft.ru> | 2012-11-22 17:00:10 +0400 |
|---|---|---|
| committer | Steve French <smfrench@gmail.com> | 2012-12-05 13:27:29 -0600 |
| commit | 9ec3c882879d3777914d34c0143c7d5b87dbb5ea (patch) | |
| tree | 97a8b4e85e85021152a2d9fcd5310b5ac23c2842 /fs/cifs | |
| parent | 6d3ea7e4975aed451fbee4dea2fef63b0de8cb4f (diff) | |
| download | linux-9ec3c882879d3777914d34c0143c7d5b87dbb5ea.tar.gz linux-9ec3c882879d3777914d34c0143c7d5b87dbb5ea.tar.bz2 linux-9ec3c882879d3777914d34c0143c7d5b87dbb5ea.zip | |
CIFS: Separate pushing posix locks and lock_sem handling
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru>
Signed-off-by: Steve French <smfrench@gmail.com>
Diffstat (limited to 'fs/cifs')
| -rw-r--r-- | fs/cifs/file.c | 32 |
1 files changed, 19 insertions, 13 deletions
diff --git a/fs/cifs/file.c b/fs/cifs/file.c index 70b6f4c3a0c1..5fbbf99e61f9 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -1041,9 +1041,8 @@ struct lock_to_push { }; static int -cifs_push_posix_locks(struct cifsFileInfo *cfile) +cifs_push_posix_locks_locked(struct cifsFileInfo *cfile) { - struct cifsInodeInfo *cinode = CIFS_I(cfile->dentry->d_inode); struct cifs_tcon *tcon = tlink_tcon(cfile->tlink); struct file_lock *flock, **before; unsigned int count = 0, i = 0; @@ -1054,14 +1053,6 @@ cifs_push_posix_locks(struct cifsFileInfo *cfile) xid = get_xid(); - /* we are going to update can_cache_brlcks here - need a write access */ - down_write(&cinode->lock_sem); - if (!cinode->can_cache_brlcks) { - up_write(&cinode->lock_sem); - free_xid(xid); - return rc; - } - lock_flocks(); cifs_for_each_lock(cfile->dentry->d_inode, before) { if ((*before)->fl_flags & FL_POSIX) @@ -1127,9 +1118,6 @@ cifs_push_posix_locks(struct cifsFileInfo *cfile) } out: - cinode->can_cache_brlcks = false; - up_write(&cinode->lock_sem); - free_xid(xid); return rc; err_out: @@ -1141,6 +1129,24 @@ err_out: } static int +cifs_push_posix_locks(struct cifsFileInfo *cfile) +{ + struct cifsInodeInfo *cinode = CIFS_I(cfile->dentry->d_inode); + int rc = 0; + + /* we are going to update can_cache_brlcks here - need a write access */ + down_write(&cinode->lock_sem); + if (!cinode->can_cache_brlcks) { + up_write(&cinode->lock_sem); + return rc; + } + rc = cifs_push_posix_locks_locked(cfile); + cinode->can_cache_brlcks = false; + up_write(&cinode->lock_sem); + return rc; +} + +static int cifs_push_locks(struct cifsFileInfo *cfile) { struct cifs_sb_info *cifs_sb = CIFS_SB(cfile->dentry->d_sb); |