0b61f8a407
Remove the verbose license text from XFS files and replace them
with SPDX tags. This does not change the license of any of the code,
merely refers to the common, up-to-date license files in LICENSES/
This change was mostly scripted. fs/xfs/Makefile and
fs/xfs/libxfs/xfs_fs.h were modified by hand, the rest were detected
and modified by the following command:
for f in `git grep -l "GNU General" fs/xfs/` ; do
echo $f
cat $f | awk -f hdr.awk > $f.new
mv -f $f.new $f
done
And the hdr.awk script that did the modification (including
detecting the difference between GPL-2.0 and GPL-2.0+ licenses)
is as follows:
$ cat hdr.awk
BEGIN {
hdr = 1.0
tag = "GPL-2.0"
str = ""
}
/^ \* This program is free software/ {
hdr = 2.0;
next
}
/any later version./ {
tag = "GPL-2.0+"
next
}
/^ \*\// {
if (hdr > 0.0) {
print "// SPDX-License-Identifier: " tag
print str
print $0
str=""
hdr = 0.0
next
}
print $0
next
}
/^ \* / {
if (hdr > 1.0)
next
if (hdr > 0.0) {
if (str != "")
str = str "\n"
str = str $0
next
}
print $0
next
}
/^ \*/ {
if (hdr > 0.0)
next
print $0
next
}
// {
if (hdr > 0.0) {
if (str != "")
str = str "\n"
str = str $0
next
}
print $0
}
END { }
$
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
89 lines
3.3 KiB
C
89 lines
3.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2016 Oracle. All Rights Reserved.
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* Author: Darrick J. Wong <darrick.wong@oracle.com>
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*/
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#ifndef __XFS_DEFER_H__
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#define __XFS_DEFER_H__
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struct xfs_defer_op_type;
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/*
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* Save a log intent item and a list of extents, so that we can replay
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* whatever action had to happen to the extent list and file the log done
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* item.
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*/
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struct xfs_defer_pending {
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const struct xfs_defer_op_type *dfp_type; /* function pointers */
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struct list_head dfp_list; /* pending items */
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void *dfp_intent; /* log intent item */
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void *dfp_done; /* log done item */
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struct list_head dfp_work; /* work items */
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unsigned int dfp_count; /* # extent items */
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};
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/*
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* Header for deferred operation list.
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*
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* dop_low is used by the allocator to activate the lowspace algorithm -
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* when free space is running low the extent allocator may choose to
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* allocate an extent from an AG without leaving sufficient space for
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* a btree split when inserting the new extent. In this case the allocator
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* will enable the lowspace algorithm which is supposed to allow further
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* allocations (such as btree splits and newroots) to allocate from
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* sequential AGs. In order to avoid locking AGs out of order the lowspace
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* algorithm will start searching for free space from AG 0. If the correct
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* transaction reservations have been made then this algorithm will eventually
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* find all the space it needs.
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*/
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enum xfs_defer_ops_type {
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XFS_DEFER_OPS_TYPE_BMAP,
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XFS_DEFER_OPS_TYPE_REFCOUNT,
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XFS_DEFER_OPS_TYPE_RMAP,
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XFS_DEFER_OPS_TYPE_FREE,
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XFS_DEFER_OPS_TYPE_AGFL_FREE,
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XFS_DEFER_OPS_TYPE_MAX,
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};
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#define XFS_DEFER_OPS_NR_INODES 2 /* join up to two inodes */
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#define XFS_DEFER_OPS_NR_BUFS 2 /* join up to two buffers */
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struct xfs_defer_ops {
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bool dop_committed; /* did any trans commit? */
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bool dop_low; /* alloc in low mode */
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struct list_head dop_intake; /* unlogged pending work */
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struct list_head dop_pending; /* logged pending work */
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/* relog these with each roll */
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struct xfs_inode *dop_inodes[XFS_DEFER_OPS_NR_INODES];
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struct xfs_buf *dop_bufs[XFS_DEFER_OPS_NR_BUFS];
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};
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void xfs_defer_add(struct xfs_defer_ops *dop, enum xfs_defer_ops_type type,
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struct list_head *h);
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int xfs_defer_finish(struct xfs_trans **tp, struct xfs_defer_ops *dop);
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void xfs_defer_cancel(struct xfs_defer_ops *dop);
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void xfs_defer_init(struct xfs_defer_ops *dop, xfs_fsblock_t *fbp);
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bool xfs_defer_has_unfinished_work(struct xfs_defer_ops *dop);
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int xfs_defer_ijoin(struct xfs_defer_ops *dop, struct xfs_inode *ip);
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int xfs_defer_bjoin(struct xfs_defer_ops *dop, struct xfs_buf *bp);
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/* Description of a deferred type. */
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struct xfs_defer_op_type {
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enum xfs_defer_ops_type type;
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unsigned int max_items;
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void (*abort_intent)(void *);
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void *(*create_done)(struct xfs_trans *, void *, unsigned int);
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int (*finish_item)(struct xfs_trans *, struct xfs_defer_ops *,
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struct list_head *, void *, void **);
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void (*finish_cleanup)(struct xfs_trans *, void *, int);
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void (*cancel_item)(struct list_head *);
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int (*diff_items)(void *, struct list_head *, struct list_head *);
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void *(*create_intent)(struct xfs_trans *, uint);
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void (*log_item)(struct xfs_trans *, void *, struct list_head *);
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};
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void xfs_defer_init_op_type(const struct xfs_defer_op_type *type);
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#endif /* __XFS_DEFER_H__ */
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