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>
90 lines
2.9 KiB
C
90 lines
2.9 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_RMAP_ITEM_H__
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#define __XFS_RMAP_ITEM_H__
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/*
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* There are (currently) three pairs of rmap btree redo item types: map, unmap,
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* and convert. The common abbreviations for these are RUI (rmap update
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* intent) and RUD (rmap update done). The redo item type is encoded in the
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* flags field of each xfs_map_extent.
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*
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* *I items should be recorded in the *first* of a series of rolled
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* transactions, and the *D items should be recorded in the same transaction
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* that records the associated rmapbt updates. Typically, the first
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* transaction will record a bmbt update, followed by some number of
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* transactions containing rmapbt updates, and finally transactions with any
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* bnobt/cntbt updates.
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*
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* Should the system crash after the commit of the first transaction but
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* before the commit of the final transaction in a series, log recovery will
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* use the redo information recorded by the intent items to replay the
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* (rmapbt/bnobt/cntbt) metadata updates in the non-first transaction.
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*/
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/* kernel only RUI/RUD definitions */
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struct xfs_mount;
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struct kmem_zone;
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/*
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* Max number of extents in fast allocation path.
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*/
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#define XFS_RUI_MAX_FAST_EXTENTS 16
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/*
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* Define RUI flag bits. Manipulated by set/clear/test_bit operators.
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*/
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#define XFS_RUI_RECOVERED 1
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/*
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* This is the "rmap update intent" log item. It is used to log the fact that
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* some reverse mappings need to change. It is used in conjunction with the
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* "rmap update done" log item described below.
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*
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* These log items follow the same rules as struct xfs_efi_log_item; see the
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* comments about that structure (in xfs_extfree_item.h) for more details.
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*/
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struct xfs_rui_log_item {
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struct xfs_log_item rui_item;
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atomic_t rui_refcount;
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atomic_t rui_next_extent;
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unsigned long rui_flags; /* misc flags */
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struct xfs_rui_log_format rui_format;
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};
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static inline size_t
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xfs_rui_log_item_sizeof(
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unsigned int nr)
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{
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return offsetof(struct xfs_rui_log_item, rui_format) +
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xfs_rui_log_format_sizeof(nr);
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}
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/*
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* This is the "rmap update done" log item. It is used to log the fact that
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* some rmapbt updates mentioned in an earlier rui item have been performed.
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*/
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struct xfs_rud_log_item {
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struct xfs_log_item rud_item;
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struct xfs_rui_log_item *rud_ruip;
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struct xfs_rud_log_format rud_format;
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};
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extern struct kmem_zone *xfs_rui_zone;
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extern struct kmem_zone *xfs_rud_zone;
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struct xfs_rui_log_item *xfs_rui_init(struct xfs_mount *, uint);
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struct xfs_rud_log_item *xfs_rud_init(struct xfs_mount *,
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struct xfs_rui_log_item *);
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int xfs_rui_copy_format(struct xfs_log_iovec *buf,
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struct xfs_rui_log_format *dst_rui_fmt);
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void xfs_rui_item_free(struct xfs_rui_log_item *);
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void xfs_rui_release(struct xfs_rui_log_item *);
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int xfs_rui_recover(struct xfs_mount *mp, struct xfs_rui_log_item *ruip);
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#endif /* __XFS_RMAP_ITEM_H__ */
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