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-rw-r--r--fs/xfs/linux-2.6/xfs_aops.c101
-rw-r--r--fs/xfs/linux-2.6/xfs_buf.c37
-rw-r--r--fs/xfs/linux-2.6/xfs_ioctl.c2
-rw-r--r--fs/xfs/linux-2.6/xfs_iops.c3
-rw-r--r--fs/xfs/linux-2.6/xfs_super.c3
-rw-r--r--fs/xfs/linux-2.6/xfs_sync.c1
6 files changed, 65 insertions, 82 deletions
diff --git a/fs/xfs/linux-2.6/xfs_aops.c b/fs/xfs/linux-2.6/xfs_aops.c
index c9af48fffcd..691f61223ed 100644
--- a/fs/xfs/linux-2.6/xfs_aops.c
+++ b/fs/xfs/linux-2.6/xfs_aops.c
@@ -934,7 +934,6 @@ xfs_aops_discard_page(
struct xfs_inode *ip = XFS_I(inode);
struct buffer_head *bh, *head;
loff_t offset = page_offset(page);
- ssize_t len = 1 << inode->i_blkbits;
if (!xfs_is_delayed_page(page, IO_DELAY))
goto out_invalidate;
@@ -949,58 +948,14 @@ xfs_aops_discard_page(
xfs_ilock(ip, XFS_ILOCK_EXCL);
bh = head = page_buffers(page);
do {
- int done;
- xfs_fileoff_t offset_fsb;
- xfs_bmbt_irec_t imap;
- int nimaps = 1;
int error;
- xfs_fsblock_t firstblock;
- xfs_bmap_free_t flist;
+ xfs_fileoff_t start_fsb;
if (!buffer_delay(bh))
goto next_buffer;
- offset_fsb = XFS_B_TO_FSBT(ip->i_mount, offset);
-
- /*
- * Map the range first and check that it is a delalloc extent
- * before trying to unmap the range. Otherwise we will be
- * trying to remove a real extent (which requires a
- * transaction) or a hole, which is probably a bad idea...
- */
- error = xfs_bmapi(NULL, ip, offset_fsb, 1,
- XFS_BMAPI_ENTIRE, NULL, 0, &imap,
- &nimaps, NULL);
-
- if (error) {
- /* something screwed, just bail */
- if (!XFS_FORCED_SHUTDOWN(ip->i_mount)) {
- xfs_fs_cmn_err(CE_ALERT, ip->i_mount,
- "page discard failed delalloc mapping lookup.");
- }
- break;
- }
- if (!nimaps) {
- /* nothing there */
- goto next_buffer;
- }
- if (imap.br_startblock != DELAYSTARTBLOCK) {
- /* been converted, ignore */
- goto next_buffer;
- }
- WARN_ON(imap.br_blockcount == 0);
-
- /*
- * Note: while we initialise the firstblock/flist pair, they
- * should never be used because blocks should never be
- * allocated or freed for a delalloc extent and hence we need
- * don't cancel or finish them after the xfs_bunmapi() call.
- */
- xfs_bmap_init(&flist, &firstblock);
- error = xfs_bunmapi(NULL, ip, offset_fsb, 1, 0, 1, &firstblock,
- &flist, &done);
-
- ASSERT(!flist.xbf_count && !flist.xbf_first);
+ start_fsb = XFS_B_TO_FSBT(ip->i_mount, offset);
+ error = xfs_bmap_punch_delalloc_range(ip, start_fsb, 1);
if (error) {
/* something screwed, just bail */
if (!XFS_FORCED_SHUTDOWN(ip->i_mount)) {
@@ -1010,7 +965,7 @@ xfs_aops_discard_page(
break;
}
next_buffer:
- offset += len;
+ offset += 1 << inode->i_blkbits;
} while ((bh = bh->b_this_page) != head);
@@ -1111,11 +1066,12 @@ xfs_vm_writepage(
uptodate = 0;
/*
- * A hole may still be marked uptodate because discard_buffer
- * leaves the flag set.
+ * set_page_dirty dirties all buffers in a page, independent
+ * of their state. The dirty state however is entirely
+ * meaningless for holes (!mapped && uptodate), so skip
+ * buffers covering holes here.
*/
if (!buffer_mapped(bh) && buffer_uptodate(bh)) {
- ASSERT(!buffer_dirty(bh));
imap_valid = 0;
continue;
}
@@ -1504,11 +1460,42 @@ xfs_vm_write_failed(
struct inode *inode = mapping->host;
if (to > inode->i_size) {
- struct iattr ia = {
- .ia_valid = ATTR_SIZE | ATTR_FORCE,
- .ia_size = inode->i_size,
- };
- xfs_setattr(XFS_I(inode), &ia, XFS_ATTR_NOLOCK);
+ /*
+ * punch out the delalloc blocks we have already allocated. We
+ * don't call xfs_setattr() to do this as we may be in the
+ * middle of a multi-iovec write and so the vfs inode->i_size
+ * will not match the xfs ip->i_size and so it will zero too
+ * much. Hence we jus truncate the page cache to zero what is
+ * necessary and punch the delalloc blocks directly.
+ */
+ struct xfs_inode *ip = XFS_I(inode);
+ xfs_fileoff_t start_fsb;
+ xfs_fileoff_t end_fsb;
+ int error;
+
+ truncate_pagecache(inode, to, inode->i_size);
+
+ /*
+ * Check if there are any blocks that are outside of i_size
+ * that need to be trimmed back.
+ */
+ start_fsb = XFS_B_TO_FSB(ip->i_mount, inode->i_size) + 1;
+ end_fsb = XFS_B_TO_FSB(ip->i_mount, to);
+ if (end_fsb <= start_fsb)
+ return;
+
+ xfs_ilock(ip, XFS_ILOCK_EXCL);
+ error = xfs_bmap_punch_delalloc_range(ip, start_fsb,
+ end_fsb - start_fsb);
+ if (error) {
+ /* something screwed, just bail */
+ if (!XFS_FORCED_SHUTDOWN(ip->i_mount)) {
+ xfs_fs_cmn_err(CE_ALERT, ip->i_mount,
+ "xfs_vm_write_failed: unable to clean up ino %lld",
+ ip->i_ino);
+ }
+ }
+ xfs_iunlock(ip, XFS_ILOCK_EXCL);
}
}
diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c
index 63fd2c07cb5..4c5deb6e9e3 100644
--- a/fs/xfs/linux-2.6/xfs_buf.c
+++ b/fs/xfs/linux-2.6/xfs_buf.c
@@ -488,29 +488,16 @@ found:
spin_unlock(&pag->pag_buf_lock);
xfs_perag_put(pag);
- /* Attempt to get the semaphore without sleeping,
- * if this does not work then we need to drop the
- * spinlock and do a hard attempt on the semaphore.
- */
- if (down_trylock(&bp->b_sema)) {
+ if (xfs_buf_cond_lock(bp)) {
+ /* failed, so wait for the lock if requested. */
if (!(flags & XBF_TRYLOCK)) {
- /* wait for buffer ownership */
xfs_buf_lock(bp);
XFS_STATS_INC(xb_get_locked_waited);
} else {
- /* We asked for a trylock and failed, no need
- * to look at file offset and length here, we
- * know that this buffer at least overlaps our
- * buffer and is locked, therefore our buffer
- * either does not exist, or is this buffer.
- */
xfs_buf_rele(bp);
XFS_STATS_INC(xb_busy_locked);
return NULL;
}
- } else {
- /* trylock worked */
- XB_SET_OWNER(bp);
}
if (bp->b_flags & XBF_STALE) {
@@ -876,10 +863,18 @@ xfs_buf_rele(
*/
/*
- * Locks a buffer object, if it is not already locked.
- * Note that this in no way locks the underlying pages, so it is only
- * useful for synchronizing concurrent use of buffer objects, not for
- * synchronizing independent access to the underlying pages.
+ * Locks a buffer object, if it is not already locked. Note that this in
+ * no way locks the underlying pages, so it is only useful for
+ * synchronizing concurrent use of buffer objects, not for synchronizing
+ * independent access to the underlying pages.
+ *
+ * If we come across a stale, pinned, locked buffer, we know that we are
+ * being asked to lock a buffer that has been reallocated. Because it is
+ * pinned, we know that the log has not been pushed to disk and hence it
+ * will still be locked. Rather than continuing to have trylock attempts
+ * fail until someone else pushes the log, push it ourselves before
+ * returning. This means that the xfsaild will not get stuck trying
+ * to push on stale inode buffers.
*/
int
xfs_buf_cond_lock(
@@ -890,6 +885,8 @@ xfs_buf_cond_lock(
locked = down_trylock(&bp->b_sema) == 0;
if (locked)
XB_SET_OWNER(bp);
+ else if (atomic_read(&bp->b_pin_count) && (bp->b_flags & XBF_STALE))
+ xfs_log_force(bp->b_target->bt_mount, 0);
trace_xfs_buf_cond_lock(bp, _RET_IP_);
return locked ? 0 : -EBUSY;
@@ -1781,7 +1778,6 @@ xfs_buf_delwri_split(
INIT_LIST_HEAD(list);
spin_lock(dwlk);
list_for_each_entry_safe(bp, n, dwq, b_list) {
- trace_xfs_buf_delwri_split(bp, _RET_IP_);
ASSERT(bp->b_flags & XBF_DELWRI);
if (!XFS_BUF_ISPINNED(bp) && !xfs_buf_cond_lock(bp)) {
@@ -1795,6 +1791,7 @@ xfs_buf_delwri_split(
_XBF_RUN_QUEUES);
bp->b_flags |= XBF_WRITE;
list_move_tail(&bp->b_list, list);
+ trace_xfs_buf_delwri_split(bp, _RET_IP_);
} else
skipped++;
}
diff --git a/fs/xfs/linux-2.6/xfs_ioctl.c b/fs/xfs/linux-2.6/xfs_ioctl.c
index 2ea238f6d38..ad442d9e392 100644
--- a/fs/xfs/linux-2.6/xfs_ioctl.c
+++ b/fs/xfs/linux-2.6/xfs_ioctl.c
@@ -416,7 +416,7 @@ xfs_attrlist_by_handle(
if (IS_ERR(dentry))
return PTR_ERR(dentry);
- kbuf = kmalloc(al_hreq.buflen, GFP_KERNEL);
+ kbuf = kzalloc(al_hreq.buflen, GFP_KERNEL);
if (!kbuf)
goto out_dput;
diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/linux-2.6/xfs_iops.c
index 96107efc0c6..94d5fd6a297 100644
--- a/fs/xfs/linux-2.6/xfs_iops.c
+++ b/fs/xfs/linux-2.6/xfs_iops.c
@@ -762,7 +762,8 @@ xfs_setup_inode(
inode->i_state = I_NEW;
inode_sb_list_add(inode);
- insert_inode_hash(inode);
+ /* make the inode look hashed for the writeback code */
+ hlist_add_fake(&inode->i_hash);
inode->i_mode = ip->i_d.di_mode;
inode->i_nlink = ip->i_d.di_nlink;
diff --git a/fs/xfs/linux-2.6/xfs_super.c b/fs/xfs/linux-2.6/xfs_super.c
index 7465a7ffc4f..c115dd5e95a 100644
--- a/fs/xfs/linux-2.6/xfs_super.c
+++ b/fs/xfs/linux-2.6/xfs_super.c
@@ -353,9 +353,6 @@ xfs_parseargs(
mp->m_qflags &= ~XFS_OQUOTA_ENFD;
} else if (!strcmp(this_char, MNTOPT_DELAYLOG)) {
mp->m_flags |= XFS_MOUNT_DELAYLOG;
- cmn_err(CE_WARN,
- "Enabling EXPERIMENTAL delayed logging feature "
- "- use at your own risk.\n");
} else if (!strcmp(this_char, MNTOPT_NODELAYLOG)) {
mp->m_flags &= ~XFS_MOUNT_DELAYLOG;
} else if (!strcmp(this_char, "ihashsize")) {
diff --git a/fs/xfs/linux-2.6/xfs_sync.c b/fs/xfs/linux-2.6/xfs_sync.c
index 37d33254981..afb0d7cfad1 100644
--- a/fs/xfs/linux-2.6/xfs_sync.c
+++ b/fs/xfs/linux-2.6/xfs_sync.c
@@ -853,6 +853,7 @@ restart:
if (trylock) {
if (!mutex_trylock(&pag->pag_ici_reclaim_lock)) {
skipped++;
+ xfs_perag_put(pag);
continue;
}
first_index = pag->pag_ici_reclaim_cursor;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-12 14:04:01 +0000