* of the GNU General Public License version 2.
*/
-#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/completion.h>
#include <linux/buffer_head.h>
#include <linux/gfs2_ondisk.h>
+#include <linux/lm_interface.h>
#include "gfs2.h"
-#include "lm_interface.h"
#include "incore.h"
#include "bmap.h"
#include "glock.h"
#include "recovery.h"
#include "rgrp.h"
#include "util.h"
-
+#include "trans.h"
/**
- * gfs2_pte_inval - Sync and invalidate all PTEs associated with a glock
+ * ail_empty_gl - remove all buffers for a given lock from the AIL
* @gl: the glock
*
+ * None of the buffers should be dirty, locked, or pinned.
*/
-static void gfs2_pte_inval(struct gfs2_glock *gl)
+static void gfs2_ail_empty_gl(struct gfs2_glock *gl)
{
- struct gfs2_inode *ip;
- struct inode *inode;
+ struct gfs2_sbd *sdp = gl->gl_sbd;
+ unsigned int blocks;
+ struct list_head *head = &gl->gl_ail_list;
+ struct gfs2_bufdata *bd;
+ struct buffer_head *bh;
+ int error;
- ip = gl->gl_object;
- inode = &ip->i_inode;
- if (!ip || !S_ISREG(ip->i_di.di_mode))
+ blocks = atomic_read(&gl->gl_ail_count);
+ if (!blocks)
return;
- if (!test_bit(GIF_PAGED, &ip->i_flags))
+ error = gfs2_trans_begin(sdp, 0, blocks);
+ if (gfs2_assert_withdraw(sdp, !error))
return;
- unmap_shared_mapping_range(inode->i_mapping, 0, 0);
-
- if (test_bit(GIF_SW_PAGED, &ip->i_flags))
- set_bit(GLF_DIRTY, &gl->gl_flags);
+ gfs2_log_lock(sdp);
+ while (!list_empty(head)) {
+ bd = list_entry(head->next, struct gfs2_bufdata,
+ bd_ail_gl_list);
+ bh = bd->bd_bh;
+ gfs2_remove_from_ail(NULL, bd);
+ bd->bd_bh = NULL;
+ bh->b_private = NULL;
+ bd->bd_blkno = bh->b_blocknr;
+ gfs2_assert_withdraw(sdp, !buffer_busy(bh));
+ gfs2_trans_add_revoke(sdp, bd);
+ }
+ gfs2_assert_withdraw(sdp, !atomic_read(&gl->gl_ail_count));
+ gfs2_log_unlock(sdp);
- clear_bit(GIF_SW_PAGED, &ip->i_flags);
+ gfs2_trans_end(sdp);
+ gfs2_log_flush(sdp, NULL);
}
/**
- * gfs2_page_inval - Invalidate all pages associated with a glock
+ * gfs2_pte_inval - Sync and invalidate all PTEs associated with a glock
* @gl: the glock
*
*/
-static void gfs2_page_inval(struct gfs2_glock *gl)
+static void gfs2_pte_inval(struct gfs2_glock *gl)
{
struct gfs2_inode *ip;
struct inode *inode;
ip = gl->gl_object;
inode = &ip->i_inode;
- if (!ip || !S_ISREG(ip->i_di.di_mode))
+ if (!ip || !S_ISREG(inode->i_mode))
return;
- truncate_inode_pages(inode->i_mapping, 0);
- gfs2_assert_withdraw(GFS2_SB(&ip->i_inode), !inode->i_mapping->nrpages);
- clear_bit(GIF_PAGED, &ip->i_flags);
-}
-
-/**
- * gfs2_page_sync - Sync the data pages (not metadata) associated with a glock
- * @gl: the glock
- * @flags: DIO_START | DIO_WAIT
- *
- * Syncs data (not metadata) for a regular file.
- * No-op for all other types.
- */
-
-static void gfs2_page_sync(struct gfs2_glock *gl, int flags)
-{
- struct gfs2_inode *ip;
- struct inode *inode;
- struct address_space *mapping;
- int error = 0;
-
- ip = gl->gl_object;
- inode = &ip->i_inode;
- if (!ip || !S_ISREG(ip->i_di.di_mode))
+ if (!test_bit(GIF_PAGED, &ip->i_flags))
return;
- mapping = inode->i_mapping;
-
- if (flags & DIO_START)
- filemap_fdatawrite(mapping);
- if (!error && (flags & DIO_WAIT))
- error = filemap_fdatawait(mapping);
-
- /* Put back any errors cleared by filemap_fdatawait()
- so they can be caught by someone who can pass them
- up to user space. */
+ unmap_shared_mapping_range(inode->i_mapping, 0, 0);
- if (error == -ENOSPC)
- set_bit(AS_ENOSPC, &mapping->flags);
- else if (error)
- set_bit(AS_EIO, &mapping->flags);
+ if (test_bit(GIF_SW_PAGED, &ip->i_flags))
+ set_bit(GLF_DIRTY, &gl->gl_flags);
+ clear_bit(GIF_SW_PAGED, &ip->i_flags);
}
/**
* 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))
+ if (gl->gl_state != LM_ST_EXCLUSIVE)
return;
if (test_and_clear_bit(GLF_DIRTY, &gl->gl_flags)) {
gfs2_log_flush(gl->gl_sbd, gl);
- gfs2_meta_sync(gl, flags | DIO_START | DIO_WAIT);
- if (flags & DIO_RELEASE)
- gfs2_ail_empty_gl(gl);
+ gfs2_meta_sync(gl);
+ gfs2_ail_empty_gl(gl);
}
-
}
/**
}
/**
+ * inode_go_sync - Sync the dirty data and/or metadata for an inode glock
+ * @gl: the glock protecting the inode
+ *
+ */
+
+static void inode_go_sync(struct gfs2_glock *gl)
+{
+ struct gfs2_inode *ip = gl->gl_object;
+
+ if (ip && !S_ISREG(ip->i_inode.i_mode))
+ ip = NULL;
+
+ if (test_bit(GLF_DIRTY, &gl->gl_flags)) {
+ if (ip && !gfs2_is_jdata(ip))
+ filemap_fdatawrite(ip->i_inode.i_mapping);
+ gfs2_log_flush(gl->gl_sbd, gl);
+ if (ip && gfs2_is_jdata(ip))
+ filemap_fdatawrite(ip->i_inode.i_mapping);
+ gfs2_meta_sync(gl);
+ if (ip) {
+ struct address_space *mapping = ip->i_inode.i_mapping;
+ int error = filemap_fdatawait(mapping);
+ mapping_set_error(mapping, error);
+ }
+ clear_bit(GLF_DIRTY, &gl->gl_flags);
+ gfs2_ail_empty_gl(gl);
+ }
+}
+
+/**
* inode_go_xmote_th - promote/demote a glock
* @gl: the glock
* @state: the requested state
*
*/
-static void inode_go_xmote_th(struct gfs2_glock *gl, unsigned int state,
- int flags)
+static void inode_go_xmote_th(struct gfs2_glock *gl)
{
if (gl->gl_state != LM_ST_UNLOCKED)
gfs2_pte_inval(gl);
- gfs2_glock_xmote_th(gl, state, flags);
+ if (gl->gl_state == LM_ST_EXCLUSIVE)
+ inode_go_sync(gl);
}
/**
if (gl->gl_state != LM_ST_UNLOCKED &&
(!gh || !(gh->gh_flags & GL_SKIP))) {
- error = gfs2_meta_read(gl, gl->gl_name.ln_number, DIO_START,
- &bh);
+ error = gfs2_meta_read(gl, gl->gl_name.ln_number, 0, &bh);
if (!error)
brelse(bh);
}
static void inode_go_drop_th(struct gfs2_glock *gl)
{
gfs2_pte_inval(gl);
- gfs2_glock_drop_th(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)
-{
- int meta = (flags & DIO_METADATA);
- int data = (flags & DIO_DATA);
-
- if (test_bit(GLF_DIRTY, &gl->gl_flags)) {
- if (meta && data) {
- gfs2_page_sync(gl, flags | DIO_START);
- gfs2_log_flush(gl->gl_sbd, gl);
- gfs2_meta_sync(gl, flags | DIO_START | DIO_WAIT);
- gfs2_page_sync(gl, flags | DIO_WAIT);
- clear_bit(GLF_DIRTY, &gl->gl_flags);
- } else if (meta) {
- gfs2_log_flush(gl->gl_sbd, gl);
- gfs2_meta_sync(gl, flags | DIO_START | DIO_WAIT);
- } else if (data)
- gfs2_page_sync(gl, flags | DIO_START | DIO_WAIT);
- if (flags & DIO_RELEASE)
- gfs2_ail_empty_gl(gl);
- }
-
+ if (gl->gl_state == LM_ST_EXCLUSIVE)
+ inode_go_sync(gl);
}
/**
static void inode_go_inval(struct gfs2_glock *gl, int flags)
{
+ struct gfs2_inode *ip = gl->gl_object;
int meta = (flags & DIO_METADATA);
- int data = (flags & DIO_DATA);
if (meta) {
gfs2_meta_inval(gl);
- gl->gl_vn++;
+ if (ip)
+ set_bit(GIF_INVALID, &ip->i_flags);
+ }
+
+ if (ip && S_ISREG(ip->i_inode.i_mode)) {
+ truncate_inode_pages(ip->i_inode.i_mapping, 0);
+ clear_bit(GIF_PAGED, &ip->i_flags);
}
- if (data)
- gfs2_page_inval(gl);
}
/**
if (!ip)
return 0;
- if (ip->i_vn != gl->gl_vn) {
+ if (test_bit(GIF_INVALID, &ip->i_flags)) {
error = gfs2_inode_refresh(ip);
if (error)
return error;
- gfs2_inode_attr_in(ip);
}
if ((ip->i_di.di_flags & GFS2_DIF_TRUNC_IN_PROG) &&
(gl->gl_state == LM_ST_EXCLUSIVE) &&
- (gh->gh_flags & GL_LOCAL_EXCL))
+ (gh->gh_state == LM_ST_EXCLUSIVE))
error = gfs2_truncatei_resume(ip);
return error;
struct gfs2_glock *gl = gh->gh_gl;
struct gfs2_inode *ip = gl->gl_object;
- if (ip) {
- if (test_bit(GLF_DIRTY, &gl->gl_flags))
- gfs2_inode_attr_in(ip);
-
+ if (ip)
gfs2_meta_cache_flush(ip);
- }
-}
-
-/**
- * inode_greedy -
- * @gl: the glock
- *
- */
-
-static void inode_greedy(struct gfs2_glock *gl)
-{
- struct gfs2_sbd *sdp = gl->gl_sbd;
- struct gfs2_inode *ip = gl->gl_object;
- unsigned int quantum = gfs2_tune_get(sdp, gt_greedy_quantum);
- unsigned int max = gfs2_tune_get(sdp, gt_greedy_max);
- unsigned int new_time;
-
- spin_lock(&ip->i_spin);
-
- if (time_after(ip->i_last_pfault + quantum, jiffies)) {
- new_time = ip->i_greedy + quantum;
- if (new_time > max)
- new_time = max;
- } else {
- new_time = ip->i_greedy - quantum;
- if (!new_time || new_time > max)
- new_time = 1;
- }
-
- ip->i_greedy = new_time;
-
- spin_unlock(&ip->i_spin);
-
- iput(&ip->i_inode);
}
/**
*
*/
-static void trans_go_xmote_th(struct gfs2_glock *gl, unsigned int state,
- int flags)
+static void trans_go_xmote_th(struct gfs2_glock *gl)
{
struct gfs2_sbd *sdp = gl->gl_sbd;
gfs2_meta_syncfs(sdp);
gfs2_log_shutdown(sdp);
}
-
- gfs2_glock_xmote_th(gl, state, flags);
}
/**
struct gfs2_sbd *sdp = gl->gl_sbd;
struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode);
struct gfs2_glock *j_gl = ip->i_gl;
- struct gfs2_log_header head;
+ struct gfs2_log_header_host head;
int error;
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)
gfs2_meta_syncfs(sdp);
gfs2_log_shutdown(sdp);
}
-
- gfs2_glock_drop_th(gl);
}
/**
}
const struct gfs2_glock_operations gfs2_meta_glops = {
- .go_xmote_th = gfs2_glock_xmote_th,
- .go_drop_th = gfs2_glock_drop_th,
- .go_type = LM_TYPE_META
+ .go_xmote_th = meta_go_sync,
+ .go_drop_th = meta_go_sync,
+ .go_type = LM_TYPE_META,
};
const struct gfs2_glock_operations gfs2_inode_glops = {
.go_xmote_th = inode_go_xmote_th,
.go_xmote_bh = inode_go_xmote_bh,
.go_drop_th = inode_go_drop_th,
- .go_sync = inode_go_sync,
.go_inval = inode_go_inval,
.go_demote_ok = inode_go_demote_ok,
.go_lock = inode_go_lock,
.go_unlock = inode_go_unlock,
- .go_greedy = inode_greedy,
- .go_type = LM_TYPE_INODE
+ .go_type = LM_TYPE_INODE,
+ .go_min_hold_time = HZ / 10,
};
const struct gfs2_glock_operations gfs2_rgrp_glops = {
- .go_xmote_th = gfs2_glock_xmote_th,
- .go_drop_th = gfs2_glock_drop_th,
- .go_sync = meta_go_sync,
+ .go_xmote_th = meta_go_sync,
+ .go_drop_th = meta_go_sync,
.go_inval = meta_go_inval,
.go_demote_ok = rgrp_go_demote_ok,
.go_lock = rgrp_go_lock,
.go_unlock = rgrp_go_unlock,
- .go_type = LM_TYPE_RGRP
+ .go_type = LM_TYPE_RGRP,
+ .go_min_hold_time = HZ / 10,
};
const struct gfs2_glock_operations gfs2_trans_glops = {
.go_xmote_th = trans_go_xmote_th,
.go_xmote_bh = trans_go_xmote_bh,
.go_drop_th = trans_go_drop_th,
- .go_type = LM_TYPE_NONDISK
+ .go_type = LM_TYPE_NONDISK,
};
const struct gfs2_glock_operations gfs2_iopen_glops = {
- .go_xmote_th = gfs2_glock_xmote_th,
- .go_drop_th = gfs2_glock_drop_th,
- .go_callback = gfs2_iopen_go_callback,
- .go_type = LM_TYPE_IOPEN
+ .go_type = LM_TYPE_IOPEN,
};
const struct gfs2_glock_operations gfs2_flock_glops = {
- .go_xmote_th = gfs2_glock_xmote_th,
- .go_drop_th = gfs2_glock_drop_th,
- .go_type = LM_TYPE_FLOCK
+ .go_type = LM_TYPE_FLOCK,
};
const struct gfs2_glock_operations gfs2_nondisk_glops = {
- .go_xmote_th = gfs2_glock_xmote_th,
- .go_drop_th = gfs2_glock_drop_th,
- .go_type = LM_TYPE_NONDISK
+ .go_type = LM_TYPE_NONDISK,
};
const struct gfs2_glock_operations gfs2_quota_glops = {
- .go_xmote_th = gfs2_glock_xmote_th,
- .go_drop_th = gfs2_glock_drop_th,
.go_demote_ok = quota_go_demote_ok,
- .go_type = LM_TYPE_QUOTA
+ .go_type = LM_TYPE_QUOTA,
};
const struct gfs2_glock_operations gfs2_journal_glops = {
- .go_xmote_th = gfs2_glock_xmote_th,
- .go_drop_th = gfs2_glock_drop_th,
- .go_type = LM_TYPE_JOURNAL
+ .go_type = LM_TYPE_JOURNAL,
};
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff