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authorSteven Whitehouse <swhiteho@redhat.com>2006-11-20 10:37:45 -0500
committerSteven Whitehouse <swhiteho@redhat.com>2006-11-30 10:36:30 -0500
commit1a14d3a68f04527546121eb7b45187ff6af63151 (patch)
tree7bc48436f7c6aad5433398311b67a10661e2633d /fs/gfs2
parentfa2ecfc5e11b12f25b67f9c84ac6b0e74a6a0115 (diff)
downloadop-kernel-dev-1a14d3a68f04527546121eb7b45187ff6af63151.zip
op-kernel-dev-1a14d3a68f04527546121eb7b45187ff6af63151.tar.gz
[GFS2] Simplify glops functions
The go_sync callback took two flags, but one of them was set on every call, so this patch removes once of the flags and makes the previously conditional operations (on this flag), unconditional. The go_inval callback took three flags, each of which was set on every call to it. This patch removes the flags and makes the operations unconditional, which makes the logic rather more obvious. Two now unused flags are also removed from incore.h. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2')
-rw-r--r--fs/gfs2/glock.c10
-rw-r--r--fs/gfs2/glops.c42
-rw-r--r--fs/gfs2/incore.h25
-rw-r--r--fs/gfs2/super.c2
4 files changed, 28 insertions, 51 deletions
diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
index edc21c8..b8ba4d5 100644
--- a/fs/gfs2/glock.c
+++ b/fs/gfs2/glock.c
@@ -847,12 +847,12 @@ static void xmote_bh(struct gfs2_glock *gl, unsigned int ret)
if (prev_state != LM_ST_UNLOCKED && !(ret & LM_OUT_CACHEABLE)) {
if (glops->go_inval)
- glops->go_inval(gl, DIO_METADATA | DIO_DATA);
+ glops->go_inval(gl, DIO_METADATA);
} else if (gl->gl_state == LM_ST_DEFERRED) {
/* We might not want to do this here.
Look at moving to the inode glops. */
if (glops->go_inval)
- glops->go_inval(gl, DIO_DATA);
+ glops->go_inval(gl, 0);
}
/* Deal with each possible exit condition */
@@ -954,7 +954,7 @@ void gfs2_glock_xmote_th(struct gfs2_glock *gl, unsigned int state, int flags)
gfs2_assert_warn(sdp, state != gl->gl_state);
if (gl->gl_state == LM_ST_EXCLUSIVE && glops->go_sync)
- glops->go_sync(gl, DIO_METADATA | DIO_DATA | DIO_RELEASE);
+ glops->go_sync(gl);
gfs2_glock_hold(gl);
gl->gl_req_bh = xmote_bh;
@@ -995,7 +995,7 @@ static void drop_bh(struct gfs2_glock *gl, unsigned int ret)
state_change(gl, LM_ST_UNLOCKED);
if (glops->go_inval)
- glops->go_inval(gl, DIO_METADATA | DIO_DATA);
+ glops->go_inval(gl, DIO_METADATA);
if (gh) {
spin_lock(&gl->gl_spin);
@@ -1041,7 +1041,7 @@ void gfs2_glock_drop_th(struct gfs2_glock *gl)
gfs2_assert_warn(sdp, gl->gl_state != LM_ST_UNLOCKED);
if (gl->gl_state == LM_ST_EXCLUSIVE && glops->go_sync)
- glops->go_sync(gl, DIO_METADATA | DIO_DATA | DIO_RELEASE);
+ glops->go_sync(gl);
gfs2_glock_hold(gl);
gl->gl_req_bh = drop_bh;
diff --git a/fs/gfs2/glops.c b/fs/gfs2/glops.c
index b92de0a..60561ca 100644
--- a/fs/gfs2/glops.c
+++ b/fs/gfs2/glops.c
@@ -173,23 +173,18 @@ static void gfs2_page_writeback(struct gfs2_glock *gl)
/**
* meta_go_sync - sync out the metadata for this glock
* @gl: the glock
- * @flags: DIO_*
*
* Called when demoting or unlocking an EX glock. We must flush
* to disk all dirty buffers/pages relating to this glock, and must not
* not return to caller to demote/unlock the glock until I/O is complete.
*/
-static void meta_go_sync(struct gfs2_glock *gl, int flags)
+static void meta_go_sync(struct gfs2_glock *gl)
{
- if (!(flags & DIO_METADATA))
- return;
-
if (test_and_clear_bit(GLF_DIRTY, &gl->gl_flags)) {
gfs2_log_flush(gl->gl_sbd, gl);
gfs2_meta_sync(gl);
- if (flags & DIO_RELEASE)
- gfs2_ail_empty_gl(gl);
+ gfs2_ail_empty_gl(gl);
}
}
@@ -264,31 +259,18 @@ static void inode_go_drop_th(struct gfs2_glock *gl)
/**
* inode_go_sync - Sync the dirty data and/or metadata for an inode glock
* @gl: the glock protecting the inode
- * @flags:
*
*/
-static void inode_go_sync(struct gfs2_glock *gl, int flags)
+static void inode_go_sync(struct gfs2_glock *gl)
{
- int meta = (flags & DIO_METADATA);
- int data = (flags & DIO_DATA);
-
if (test_bit(GLF_DIRTY, &gl->gl_flags)) {
- if (meta && data) {
- gfs2_page_writeback(gl);
- gfs2_log_flush(gl->gl_sbd, gl);
- gfs2_meta_sync(gl);
- gfs2_page_wait(gl);
- clear_bit(GLF_DIRTY, &gl->gl_flags);
- } else if (meta) {
- gfs2_log_flush(gl->gl_sbd, gl);
- gfs2_meta_sync(gl);
- } else if (data) {
- gfs2_page_writeback(gl);
- gfs2_page_wait(gl);
- }
- if (flags & DIO_RELEASE)
- gfs2_ail_empty_gl(gl);
+ gfs2_page_writeback(gl);
+ gfs2_log_flush(gl->gl_sbd, gl);
+ gfs2_meta_sync(gl);
+ gfs2_page_wait(gl);
+ clear_bit(GLF_DIRTY, &gl->gl_flags);
+ gfs2_ail_empty_gl(gl);
}
}
@@ -302,15 +284,13 @@ static void inode_go_sync(struct gfs2_glock *gl, int flags)
static void inode_go_inval(struct gfs2_glock *gl, int flags)
{
int meta = (flags & DIO_METADATA);
- int data = (flags & DIO_DATA);
if (meta) {
struct gfs2_inode *ip = gl->gl_object;
gfs2_meta_inval(gl);
set_bit(GIF_INVALID, &ip->i_flags);
}
- if (data)
- gfs2_page_inval(gl);
+ gfs2_page_inval(gl);
}
/**
@@ -494,7 +474,7 @@ static void trans_go_xmote_bh(struct gfs2_glock *gl)
if (gl->gl_state != LM_ST_UNLOCKED &&
test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) {
gfs2_meta_cache_flush(GFS2_I(sdp->sd_jdesc->jd_inode));
- j_gl->gl_ops->go_inval(j_gl, DIO_METADATA | DIO_DATA);
+ j_gl->gl_ops->go_inval(j_gl, DIO_METADATA);
error = gfs2_find_jhead(sdp->sd_jdesc, &head);
if (error)
diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h
index 227a74d..734421e 100644
--- a/fs/gfs2/incore.h
+++ b/fs/gfs2/incore.h
@@ -14,8 +14,6 @@
#define DIO_WAIT 0x00000010
#define DIO_METADATA 0x00000020
-#define DIO_DATA 0x00000040
-#define DIO_RELEASE 0x00000080
#define DIO_ALL 0x00000100
struct gfs2_log_operations;
@@ -103,18 +101,17 @@ struct gfs2_bufdata {
};
struct gfs2_glock_operations {
- void (*go_xmote_th) (struct gfs2_glock * gl, unsigned int state,
- int flags);
- void (*go_xmote_bh) (struct gfs2_glock * gl);
- void (*go_drop_th) (struct gfs2_glock * gl);
- void (*go_drop_bh) (struct gfs2_glock * gl);
- void (*go_sync) (struct gfs2_glock * gl, int flags);
- void (*go_inval) (struct gfs2_glock * gl, int flags);
- int (*go_demote_ok) (struct gfs2_glock * gl);
- int (*go_lock) (struct gfs2_holder * gh);
- void (*go_unlock) (struct gfs2_holder * gh);
- void (*go_callback) (struct gfs2_glock * gl, unsigned int state);
- void (*go_greedy) (struct gfs2_glock * gl);
+ void (*go_xmote_th) (struct gfs2_glock *gl, unsigned int state, int flags);
+ void (*go_xmote_bh) (struct gfs2_glock *gl);
+ void (*go_drop_th) (struct gfs2_glock *gl);
+ void (*go_drop_bh) (struct gfs2_glock *gl);
+ void (*go_sync) (struct gfs2_glock *gl);
+ void (*go_inval) (struct gfs2_glock *gl, int flags);
+ int (*go_demote_ok) (struct gfs2_glock *gl);
+ int (*go_lock) (struct gfs2_holder *gh);
+ void (*go_unlock) (struct gfs2_holder *gh);
+ void (*go_callback) (struct gfs2_glock *gl, unsigned int state);
+ void (*go_greedy) (struct gfs2_glock *gl);
const int go_type;
};
diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c
index 0ef8317..1408c5f 100644
--- a/fs/gfs2/super.c
+++ b/fs/gfs2/super.c
@@ -517,7 +517,7 @@ int gfs2_make_fs_rw(struct gfs2_sbd *sdp)
return error;
gfs2_meta_cache_flush(ip);
- j_gl->gl_ops->go_inval(j_gl, DIO_METADATA | DIO_DATA);
+ j_gl->gl_ops->go_inval(j_gl, DIO_METADATA);
error = gfs2_find_jhead(sdp->sd_jdesc, &head);
if (error)
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