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6bf4d76f47
Create spl_inode_lock/spl_inode_unlock compability macros to simply access to the inode mutex/sem. This avoids the need to have to ugly up the code with the required #define's at every call site. At the moment the SPL only uses this in one place but higher layers can benefit from the macro.
72 lines
2.4 KiB
C
72 lines
2.4 KiB
C
/*****************************************************************************\
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* Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
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* Copyright (C) 2007 The Regents of the University of California.
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* Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
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* Written by Brian Behlendorf <behlendorf1@llnl.gov>.
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* UCRL-CODE-235197
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*
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* This file is part of the SPL, Solaris Porting Layer.
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* For details, see <http://github.com/behlendorf/spl/>.
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*
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* The SPL is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* The SPL is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with the SPL. If not, see <http://www.gnu.org/licenses/>.
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\*****************************************************************************/
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#ifndef _SPL_FILE_COMPAT_H
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#define _SPL_FILE_COMPAT_H
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#include <linux/fs.h>
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#ifdef HAVE_FDTABLE_HEADER
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#include <linux/fdtable.h>
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#endif
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static inline struct file *
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spl_filp_open(const char *name, int flags, int mode, int *err)
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{
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struct file *filp = NULL;
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int rc;
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filp = filp_open(name, flags, mode);
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if (IS_ERR(filp)) {
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rc = PTR_ERR(filp);
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if (err)
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*err = rc;
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filp = NULL;
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}
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return filp;
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}
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#define spl_filp_close(f) filp_close(f, NULL)
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#define spl_filp_poff(f) (&(f)->f_pos)
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#define spl_filp_write(fp, b, s, p) (fp)->f_op->write((fp), (b), (s), p)
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#ifdef HAVE_3ARGS_FILE_FSYNC
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#define spl_filp_fsync(fp, sync) (fp)->f_op->fsync((fp), \
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(fp)->f_dentry, sync)
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#else
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#define spl_filp_fsync(fp, sync) (fp)->f_op->fsync((fp), sync)
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#endif
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#ifdef HAVE_INODE_I_MUTEX
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#define spl_inode_lock(ip) (mutex_lock(&(ip)->i_mutex))
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#define spl_inode_lock_nested(ip, type) (mutex_lock_nested((&(ip)->i_mutex), \
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(type)))
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#define spl_inode_unlock(ip) (mutex_unlock(&(ip)->i_mutex))
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#else
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#define spl_inode_lock(ip) (down(&(ip)->i_sem))
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#define spl_inode_unlock(ip) (up(&(ip)->i_sem))
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#endif /* HAVE_INODE_I_MUTEX */
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#endif /* SPL_FILE_COMPAT_H */
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