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[GFS2] Use mutices rather than semaphores

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As well as a number of minor bug fixes, this patch changes GFS
to use mutices rather than semaphores. This results in better
information in case there are any locking problems.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
This commit is contained in:
Steven Whitehouse
2006-02-21 12:51:39 +00:00
parent 5c4e9e0366
commit f55ab26a8f
17 changed files with 118 additions and 118 deletions
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10
fs/gfs2/ops_file.c
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@@ -688,7 +688,7 @@ static int gfs2_open(struct inode *inode, struct file *file)
if (!fp)
return -ENOMEM;
init_MUTEX(&fp->f_fl_mutex);
mutex_init(&fp->f_fl_mutex);
fp->f_inode = ip;
fp->f_vfile = file;
@@ -858,7 +858,7 @@ static int do_flock(struct file *file, int cmd, struct file_lock *fl)
state = (fl->fl_type == F_WRLCK) ? LM_ST_EXCLUSIVE : LM_ST_SHARED;
flags = ((IS_SETLKW(cmd)) ? 0 : LM_FLAG_TRY) | GL_EXACT | GL_NOCACHE;
down(&fp->f_fl_mutex);
mutex_lock(&fp->f_fl_mutex);
gl = fl_gh->gh_gl;
if (gl) {
@@ -890,7 +890,7 @@ static int do_flock(struct file *file, int cmd, struct file_lock *fl)
}
out:
up(&fp->f_fl_mutex);
mutex_unlock(&fp->f_fl_mutex);
return error;
}
@@ -900,11 +900,11 @@ static void do_unflock(struct file *file, struct file_lock *fl)
struct gfs2_file *fp = get_v2fp(file);
struct gfs2_holder *fl_gh = &fp->f_fl_gh;
down(&fp->f_fl_mutex);
mutex_lock(&fp->f_fl_mutex);
flock_lock_file_wait(file, fl);
if (fl_gh->gh_gl)
gfs2_glock_dq_uninit(fl_gh);
up(&fp->f_fl_mutex);
mutex_unlock(&fp->f_fl_mutex);
}
/**