forked from Minki/linux
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>
83 lines
3.0 KiB
C
83 lines
3.0 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_REFCOUNT_H__
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#define __XFS_REFCOUNT_H__
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extern int xfs_refcount_lookup_le(struct xfs_btree_cur *cur,
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xfs_agblock_t bno, int *stat);
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extern int xfs_refcount_lookup_ge(struct xfs_btree_cur *cur,
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xfs_agblock_t bno, int *stat);
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extern int xfs_refcount_lookup_eq(struct xfs_btree_cur *cur,
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xfs_agblock_t bno, int *stat);
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extern int xfs_refcount_get_rec(struct xfs_btree_cur *cur,
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struct xfs_refcount_irec *irec, int *stat);
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enum xfs_refcount_intent_type {
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XFS_REFCOUNT_INCREASE = 1,
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XFS_REFCOUNT_DECREASE,
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XFS_REFCOUNT_ALLOC_COW,
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XFS_REFCOUNT_FREE_COW,
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};
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struct xfs_refcount_intent {
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struct list_head ri_list;
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enum xfs_refcount_intent_type ri_type;
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xfs_fsblock_t ri_startblock;
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xfs_extlen_t ri_blockcount;
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};
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extern int xfs_refcount_increase_extent(struct xfs_mount *mp,
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struct xfs_defer_ops *dfops, struct xfs_bmbt_irec *irec);
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extern int xfs_refcount_decrease_extent(struct xfs_mount *mp,
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struct xfs_defer_ops *dfops, struct xfs_bmbt_irec *irec);
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extern void xfs_refcount_finish_one_cleanup(struct xfs_trans *tp,
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struct xfs_btree_cur *rcur, int error);
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extern int xfs_refcount_finish_one(struct xfs_trans *tp,
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struct xfs_defer_ops *dfops, enum xfs_refcount_intent_type type,
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xfs_fsblock_t startblock, xfs_extlen_t blockcount,
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xfs_fsblock_t *new_fsb, xfs_extlen_t *new_len,
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struct xfs_btree_cur **pcur);
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extern int xfs_refcount_find_shared(struct xfs_btree_cur *cur,
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xfs_agblock_t agbno, xfs_extlen_t aglen, xfs_agblock_t *fbno,
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xfs_extlen_t *flen, bool find_end_of_shared);
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extern int xfs_refcount_alloc_cow_extent(struct xfs_mount *mp,
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struct xfs_defer_ops *dfops, xfs_fsblock_t fsb,
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xfs_extlen_t len);
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extern int xfs_refcount_free_cow_extent(struct xfs_mount *mp,
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struct xfs_defer_ops *dfops, xfs_fsblock_t fsb,
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xfs_extlen_t len);
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extern int xfs_refcount_recover_cow_leftovers(struct xfs_mount *mp,
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xfs_agnumber_t agno);
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/*
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* While we're adjusting the refcounts records of an extent, we have
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* to keep an eye on the number of extents we're dirtying -- run too
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* many in a single transaction and we'll exceed the transaction's
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* reservation and crash the fs. Each record adds 12 bytes to the
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* log (plus any key updates) so we'll conservatively assume 32 bytes
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* per record. We must also leave space for btree splits on both ends
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* of the range and space for the CUD and a new CUI.
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*/
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#define XFS_REFCOUNT_ITEM_OVERHEAD 32
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static inline xfs_fileoff_t xfs_refcount_max_unmap(int log_res)
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{
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return (log_res * 3 / 4) / XFS_REFCOUNT_ITEM_OVERHEAD;
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}
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extern int xfs_refcount_has_record(struct xfs_btree_cur *cur,
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xfs_agblock_t bno, xfs_extlen_t len, bool *exists);
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union xfs_btree_rec;
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extern void xfs_refcount_btrec_to_irec(union xfs_btree_rec *rec,
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struct xfs_refcount_irec *irec);
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extern int xfs_refcount_insert(struct xfs_btree_cur *cur,
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struct xfs_refcount_irec *irec, int *stat);
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#endif /* __XFS_REFCOUNT_H__ */
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