[linux-stable-rc:linux-5.4.y 2906/4278] fs/xfs/xfs_rtalloc.c:892:1: warning: stack frame size (1056) exceeds limit (1024) in function 'xfs_growfs_rt'

From: kernel test robot
Date: Sat Jul 10 2021 - 03:47:41 EST

tree: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.4.y
head: f52a40401ee9825556cc803c110c67bfec5f6b94
commit: b2844ba3d37cba994fc9e591e7bed17c7a0408d7 [2906/4278] xfs: fix realtime bitmap/summary file truncation when growing rt volume
config: mips-buildonly-randconfig-r002-20210709 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 8d69635ed9ecf36fd0ca85906bfde17949671cbe)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install mips cross compiling tool for clang build
# apt-get install binutils-mips-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/commit/?id=b2844ba3d37cba994fc9e591e7bed17c7a0408d7
git remote add linux-stable-rc https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
git fetch --no-tags linux-stable-rc linux-5.4.y
git checkout b2844ba3d37cba994fc9e591e7bed17c7a0408d7
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=mips

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

>> fs/xfs/xfs_rtalloc.c:892:1: warning: stack frame size (1056) exceeds limit (1024) in function 'xfs_growfs_rt' [-Wframe-larger-than]
xfs_growfs_rt(
^
1 warning generated.


vim +/xfs_growfs_rt +892 fs/xfs/xfs_rtalloc.c

65eed012d1f2d0 Omar Sandoval 2018-12-21 883
^1da177e4c3f41 Linus Torvalds 2005-04-16 884 /*
^1da177e4c3f41 Linus Torvalds 2005-04-16 885 * Visible (exported) functions.
^1da177e4c3f41 Linus Torvalds 2005-04-16 886 */
^1da177e4c3f41 Linus Torvalds 2005-04-16 887
^1da177e4c3f41 Linus Torvalds 2005-04-16 888 /*
^1da177e4c3f41 Linus Torvalds 2005-04-16 889 * Grow the realtime area of the filesystem.
^1da177e4c3f41 Linus Torvalds 2005-04-16 890 */
^1da177e4c3f41 Linus Torvalds 2005-04-16 891 int
^1da177e4c3f41 Linus Torvalds 2005-04-16 @892 xfs_growfs_rt(
^1da177e4c3f41 Linus Torvalds 2005-04-16 893 xfs_mount_t *mp, /* mount point for filesystem */
^1da177e4c3f41 Linus Torvalds 2005-04-16 894 xfs_growfs_rt_t *in) /* growfs rt input struct */
^1da177e4c3f41 Linus Torvalds 2005-04-16 895 {
^1da177e4c3f41 Linus Torvalds 2005-04-16 896 xfs_rtblock_t bmbno; /* bitmap block number */
^1da177e4c3f41 Linus Torvalds 2005-04-16 897 xfs_buf_t *bp; /* temporary buffer */
^1da177e4c3f41 Linus Torvalds 2005-04-16 898 int error; /* error return value */
^1da177e4c3f41 Linus Torvalds 2005-04-16 899 xfs_mount_t *nmp; /* new (fake) mount structure */
d5cf09baced0ef Christoph Hellwig 2014-07-30 900 xfs_rfsblock_t nrblocks; /* new number of realtime blocks */
^1da177e4c3f41 Linus Torvalds 2005-04-16 901 xfs_extlen_t nrbmblocks; /* new number of rt bitmap blocks */
d5cf09baced0ef Christoph Hellwig 2014-07-30 902 xfs_rtblock_t nrextents; /* new number of realtime extents */
^1da177e4c3f41 Linus Torvalds 2005-04-16 903 uint8_t nrextslog; /* new log2 of sb_rextents */
^1da177e4c3f41 Linus Torvalds 2005-04-16 904 xfs_extlen_t nrsumblocks; /* new number of summary blocks */
^1da177e4c3f41 Linus Torvalds 2005-04-16 905 uint nrsumlevels; /* new rt summary levels */
^1da177e4c3f41 Linus Torvalds 2005-04-16 906 uint nrsumsize; /* new size of rt summary, bytes */
^1da177e4c3f41 Linus Torvalds 2005-04-16 907 xfs_sb_t *nsbp; /* new superblock */
^1da177e4c3f41 Linus Torvalds 2005-04-16 908 xfs_extlen_t rbmblocks; /* current number of rt bitmap blocks */
^1da177e4c3f41 Linus Torvalds 2005-04-16 909 xfs_extlen_t rsumblocks; /* current number of rt summary blks */
^1da177e4c3f41 Linus Torvalds 2005-04-16 910 xfs_sb_t *sbp; /* old superblock */
^1da177e4c3f41 Linus Torvalds 2005-04-16 911 xfs_fsblock_t sumbno; /* summary block number */
65eed012d1f2d0 Omar Sandoval 2018-12-21 912 uint8_t *rsum_cache; /* old summary cache */
^1da177e4c3f41 Linus Torvalds 2005-04-16 913
^1da177e4c3f41 Linus Torvalds 2005-04-16 914 sbp = &mp->m_sb;
^1da177e4c3f41 Linus Torvalds 2005-04-16 915 /*
^1da177e4c3f41 Linus Torvalds 2005-04-16 916 * Initial error checking.
^1da177e4c3f41 Linus Torvalds 2005-04-16 917 */
743bb4650da9e2 sandeen@xxxxxxxxxxx 2008-11-25 918 if (!capable(CAP_SYS_ADMIN))
2451337dd04390 Dave Chinner 2014-06-25 919 return -EPERM;
73024cf11522c0 Eric Sesterhenn 2006-06-28 920 if (mp->m_rtdev_targp == NULL || mp->m_rbmip == NULL ||
^1da177e4c3f41 Linus Torvalds 2005-04-16 921 (nrblocks = in->newblocks) <= sbp->sb_rblocks ||
^1da177e4c3f41 Linus Torvalds 2005-04-16 922 (sbp->sb_rblocks && (in->extsize != sbp->sb_rextsize)))
2451337dd04390 Dave Chinner 2014-06-25 923 return -EINVAL;
4cc929ee305c69 Nathan Scott 2007-05-14 924 if ((error = xfs_sb_validate_fsb_count(sbp, nrblocks)))
4cc929ee305c69 Nathan Scott 2007-05-14 925 return error;
^1da177e4c3f41 Linus Torvalds 2005-04-16 926 /*
^1da177e4c3f41 Linus Torvalds 2005-04-16 927 * Read in the last block of the device, make sure it exists.
^1da177e4c3f41 Linus Torvalds 2005-04-16 928 */
ba3726742c1712 Dave Chinner 2014-10-02 929 error = xfs_buf_read_uncached(mp->m_rtdev_targp,
4cc929ee305c69 Nathan Scott 2007-05-14 930 XFS_FSB_TO_BB(mp, nrblocks - 1),
ba3726742c1712 Dave Chinner 2014-10-02 931 XFS_FSB_TO_BB(mp, 1), 0, &bp, NULL);
ba3726742c1712 Dave Chinner 2014-10-02 932 if (error)
eab4e63368b4cf Dave Chinner 2012-11-12 933 return error;
^1da177e4c3f41 Linus Torvalds 2005-04-16 934 xfs_buf_relse(bp);
1922c949c59f93 Dave Chinner 2010-09-22 935
^1da177e4c3f41 Linus Torvalds 2005-04-16 936 /*
^1da177e4c3f41 Linus Torvalds 2005-04-16 937 * Calculate new parameters. These are the final values to be reached.
^1da177e4c3f41 Linus Torvalds 2005-04-16 938 */
^1da177e4c3f41 Linus Torvalds 2005-04-16 939 nrextents = nrblocks;
^1da177e4c3f41 Linus Torvalds 2005-04-16 940 do_div(nrextents, in->extsize);
68c3271515f11f Nathan Scott 2006-09-28 941 nrbmblocks = howmany_64(nrextents, NBBY * sbp->sb_blocksize);
^1da177e4c3f41 Linus Torvalds 2005-04-16 942 nrextslog = xfs_highbit32(nrextents);
^1da177e4c3f41 Linus Torvalds 2005-04-16 943 nrsumlevels = nrextslog + 1;
^1da177e4c3f41 Linus Torvalds 2005-04-16 944 nrsumsize = (uint)sizeof(xfs_suminfo_t) * nrsumlevels * nrbmblocks;
^1da177e4c3f41 Linus Torvalds 2005-04-16 945 nrsumblocks = XFS_B_TO_FSB(mp, nrsumsize);
^1da177e4c3f41 Linus Torvalds 2005-04-16 946 nrsumsize = XFS_FSB_TO_B(mp, nrsumblocks);
^1da177e4c3f41 Linus Torvalds 2005-04-16 947 /*
^1da177e4c3f41 Linus Torvalds 2005-04-16 948 * New summary size can't be more than half the size of
^1da177e4c3f41 Linus Torvalds 2005-04-16 949 * the log. This prevents us from getting a log overflow,
^1da177e4c3f41 Linus Torvalds 2005-04-16 950 * since we'll log basically the whole summary file at once.
^1da177e4c3f41 Linus Torvalds 2005-04-16 951 */
^1da177e4c3f41 Linus Torvalds 2005-04-16 952 if (nrsumblocks > (mp->m_sb.sb_logblocks >> 1))
2451337dd04390 Dave Chinner 2014-06-25 953 return -EINVAL;
^1da177e4c3f41 Linus Torvalds 2005-04-16 954 /*
^1da177e4c3f41 Linus Torvalds 2005-04-16 955 * Get the old block counts for bitmap and summary inodes.
^1da177e4c3f41 Linus Torvalds 2005-04-16 956 * These can't change since other growfs callers are locked out.
^1da177e4c3f41 Linus Torvalds 2005-04-16 957 */
^1da177e4c3f41 Linus Torvalds 2005-04-16 958 rbmblocks = XFS_B_TO_FSB(mp, mp->m_rbmip->i_d.di_size);
^1da177e4c3f41 Linus Torvalds 2005-04-16 959 rsumblocks = XFS_B_TO_FSB(mp, mp->m_rsumip->i_d.di_size);
^1da177e4c3f41 Linus Torvalds 2005-04-16 960 /*
^1da177e4c3f41 Linus Torvalds 2005-04-16 961 * Allocate space to the bitmap and summary files, as necessary.
^1da177e4c3f41 Linus Torvalds 2005-04-16 962 */
1050c71e2925ab Christoph Hellwig 2011-02-13 963 error = xfs_growfs_rt_alloc(mp, rbmblocks, nrbmblocks, mp->m_rbmip);
1050c71e2925ab Christoph Hellwig 2011-02-13 964 if (error)
^1da177e4c3f41 Linus Torvalds 2005-04-16 965 return error;
1050c71e2925ab Christoph Hellwig 2011-02-13 966 error = xfs_growfs_rt_alloc(mp, rsumblocks, nrsumblocks, mp->m_rsumip);
1050c71e2925ab Christoph Hellwig 2011-02-13 967 if (error)
^1da177e4c3f41 Linus Torvalds 2005-04-16 968 return error;
65eed012d1f2d0 Omar Sandoval 2018-12-21 969
65eed012d1f2d0 Omar Sandoval 2018-12-21 970 rsum_cache = mp->m_rsum_cache;
65eed012d1f2d0 Omar Sandoval 2018-12-21 971 if (nrbmblocks != sbp->sb_rbmblocks)
65eed012d1f2d0 Omar Sandoval 2018-12-21 972 xfs_alloc_rsum_cache(mp, nrbmblocks);
65eed012d1f2d0 Omar Sandoval 2018-12-21 973
d432c80e68e3c2 Nathan Scott 2006-09-28 974 /*
d432c80e68e3c2 Nathan Scott 2006-09-28 975 * Allocate a new (fake) mount/sb.
d432c80e68e3c2 Nathan Scott 2006-09-28 976 */
707e0ddaf67e89 Tetsuo Handa 2019-08-26 977 nmp = kmem_alloc(sizeof(*nmp), 0);
^1da177e4c3f41 Linus Torvalds 2005-04-16 978 /*
^1da177e4c3f41 Linus Torvalds 2005-04-16 979 * Loop over the bitmap blocks.
^1da177e4c3f41 Linus Torvalds 2005-04-16 980 * We will do everything one bitmap block at a time.
^1da177e4c3f41 Linus Torvalds 2005-04-16 981 * Skip the current block if it is exactly full.
^1da177e4c3f41 Linus Torvalds 2005-04-16 982 * This also deals with the case where there were no rtextents before.
^1da177e4c3f41 Linus Torvalds 2005-04-16 983 */
^1da177e4c3f41 Linus Torvalds 2005-04-16 984 for (bmbno = sbp->sb_rbmblocks -
^1da177e4c3f41 Linus Torvalds 2005-04-16 985 ((sbp->sb_rextents & ((1 << mp->m_blkbit_log) - 1)) != 0);
^1da177e4c3f41 Linus Torvalds 2005-04-16 986 bmbno < nrbmblocks;
^1da177e4c3f41 Linus Torvalds 2005-04-16 987 bmbno++) {
0924b585fc49bf Dave Chinner 2008-11-28 988 xfs_trans_t *tp;
0924b585fc49bf Dave Chinner 2008-11-28 989
^1da177e4c3f41 Linus Torvalds 2005-04-16 990 *nmp = *mp;
^1da177e4c3f41 Linus Torvalds 2005-04-16 991 nsbp = &nmp->m_sb;
^1da177e4c3f41 Linus Torvalds 2005-04-16 992 /*
^1da177e4c3f41 Linus Torvalds 2005-04-16 993 * Calculate new sb and mount fields for this round.
^1da177e4c3f41 Linus Torvalds 2005-04-16 994 */
^1da177e4c3f41 Linus Torvalds 2005-04-16 995 nsbp->sb_rextsize = in->extsize;
^1da177e4c3f41 Linus Torvalds 2005-04-16 996 nsbp->sb_rbmblocks = bmbno + 1;
^1da177e4c3f41 Linus Torvalds 2005-04-16 997 nsbp->sb_rblocks =
^1da177e4c3f41 Linus Torvalds 2005-04-16 998 XFS_RTMIN(nrblocks,
^1da177e4c3f41 Linus Torvalds 2005-04-16 999 nsbp->sb_rbmblocks * NBBY *
^1da177e4c3f41 Linus Torvalds 2005-04-16 1000 nsbp->sb_blocksize * nsbp->sb_rextsize);
^1da177e4c3f41 Linus Torvalds 2005-04-16 1001 nsbp->sb_rextents = nsbp->sb_rblocks;
^1da177e4c3f41 Linus Torvalds 2005-04-16 1002 do_div(nsbp->sb_rextents, nsbp->sb_rextsize);
79071eb0b2f142 David Chinner 2008-08-13 1003 ASSERT(nsbp->sb_rextents != 0);
^1da177e4c3f41 Linus Torvalds 2005-04-16 1004 nsbp->sb_rextslog = xfs_highbit32(nsbp->sb_rextents);
^1da177e4c3f41 Linus Torvalds 2005-04-16 1005 nrsumlevels = nmp->m_rsumlevels = nsbp->sb_rextslog + 1;
^1da177e4c3f41 Linus Torvalds 2005-04-16 1006 nrsumsize =
^1da177e4c3f41 Linus Torvalds 2005-04-16 1007 (uint)sizeof(xfs_suminfo_t) * nrsumlevels *
^1da177e4c3f41 Linus Torvalds 2005-04-16 1008 nsbp->sb_rbmblocks;
^1da177e4c3f41 Linus Torvalds 2005-04-16 1009 nrsumblocks = XFS_B_TO_FSB(mp, nrsumsize);
^1da177e4c3f41 Linus Torvalds 2005-04-16 1010 nmp->m_rsumsize = nrsumsize = XFS_FSB_TO_B(mp, nrsumblocks);
^1da177e4c3f41 Linus Torvalds 2005-04-16 1011 /*
^1da177e4c3f41 Linus Torvalds 2005-04-16 1012 * Start a transaction, get the log reservation.
^1da177e4c3f41 Linus Torvalds 2005-04-16 1013 */
253f4911f297b8 Christoph Hellwig 2016-04-06 1014 error = xfs_trans_alloc(mp, &M_RES(mp)->tr_growrtfree, 0, 0, 0,
253f4911f297b8 Christoph Hellwig 2016-04-06 1015 &tp);
3d3c8b5222b924 Jie Liu 2013-08-12 1016 if (error)
253f4911f297b8 Christoph Hellwig 2016-04-06 1017 break;
^1da177e4c3f41 Linus Torvalds 2005-04-16 1018 /*
^1da177e4c3f41 Linus Torvalds 2005-04-16 1019 * Lock out other callers by grabbing the bitmap inode lock.
^1da177e4c3f41 Linus Torvalds 2005-04-16 1020 */
1050c71e2925ab Christoph Hellwig 2011-02-13 1021 xfs_ilock(mp->m_rbmip, XFS_ILOCK_EXCL);
ddc3415aba1cb2 Christoph Hellwig 2011-09-19 1022 xfs_trans_ijoin(tp, mp->m_rbmip, XFS_ILOCK_EXCL);
^1da177e4c3f41 Linus Torvalds 2005-04-16 1023 /*
b2844ba3d37cba Darrick J. Wong 2020-10-07 1024 * Update the bitmap inode's size ondisk and incore. We need
b2844ba3d37cba Darrick J. Wong 2020-10-07 1025 * to update the incore size so that inode inactivation won't
b2844ba3d37cba Darrick J. Wong 2020-10-07 1026 * punch what it thinks are "posteof" blocks.
^1da177e4c3f41 Linus Torvalds 2005-04-16 1027 */
^1da177e4c3f41 Linus Torvalds 2005-04-16 1028 mp->m_rbmip->i_d.di_size =
^1da177e4c3f41 Linus Torvalds 2005-04-16 1029 nsbp->sb_rbmblocks * nsbp->sb_blocksize;
b2844ba3d37cba Darrick J. Wong 2020-10-07 1030 i_size_write(VFS_I(mp->m_rbmip), mp->m_rbmip->i_d.di_size);
^1da177e4c3f41 Linus Torvalds 2005-04-16 1031 xfs_trans_log_inode(tp, mp->m_rbmip, XFS_ILOG_CORE);
^1da177e4c3f41 Linus Torvalds 2005-04-16 1032 /*
^1da177e4c3f41 Linus Torvalds 2005-04-16 1033 * Get the summary inode into the transaction.
^1da177e4c3f41 Linus Torvalds 2005-04-16 1034 */
1050c71e2925ab Christoph Hellwig 2011-02-13 1035 xfs_ilock(mp->m_rsumip, XFS_ILOCK_EXCL);
ddc3415aba1cb2 Christoph Hellwig 2011-09-19 1036 xfs_trans_ijoin(tp, mp->m_rsumip, XFS_ILOCK_EXCL);
^1da177e4c3f41 Linus Torvalds 2005-04-16 1037 /*
b2844ba3d37cba Darrick J. Wong 2020-10-07 1038 * Update the summary inode's size. We need to update the
b2844ba3d37cba Darrick J. Wong 2020-10-07 1039 * incore size so that inode inactivation won't punch what it
b2844ba3d37cba Darrick J. Wong 2020-10-07 1040 * thinks are "posteof" blocks.
^1da177e4c3f41 Linus Torvalds 2005-04-16 1041 */
^1da177e4c3f41 Linus Torvalds 2005-04-16 1042 mp->m_rsumip->i_d.di_size = nmp->m_rsumsize;
b2844ba3d37cba Darrick J. Wong 2020-10-07 1043 i_size_write(VFS_I(mp->m_rsumip), mp->m_rsumip->i_d.di_size);
^1da177e4c3f41 Linus Torvalds 2005-04-16 1044 xfs_trans_log_inode(tp, mp->m_rsumip, XFS_ILOG_CORE);
^1da177e4c3f41 Linus Torvalds 2005-04-16 1045 /*
^1da177e4c3f41 Linus Torvalds 2005-04-16 1046 * Copy summary data from old to new sizes.
^1da177e4c3f41 Linus Torvalds 2005-04-16 1047 * Do this when the real size (not block-aligned) changes.
^1da177e4c3f41 Linus Torvalds 2005-04-16 1048 */
^1da177e4c3f41 Linus Torvalds 2005-04-16 1049 if (sbp->sb_rbmblocks != nsbp->sb_rbmblocks ||
^1da177e4c3f41 Linus Torvalds 2005-04-16 1050 mp->m_rsumlevels != nmp->m_rsumlevels) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 1051 error = xfs_rtcopy_summary(mp, nmp, tp);
^1da177e4c3f41 Linus Torvalds 2005-04-16 1052 if (error)
0924b585fc49bf Dave Chinner 2008-11-28 1053 goto error_cancel;
^1da177e4c3f41 Linus Torvalds 2005-04-16 1054 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 1055 /*
^1da177e4c3f41 Linus Torvalds 2005-04-16 1056 * Update superblock fields.
^1da177e4c3f41 Linus Torvalds 2005-04-16 1057 */
^1da177e4c3f41 Linus Torvalds 2005-04-16 1058 if (nsbp->sb_rextsize != sbp->sb_rextsize)
^1da177e4c3f41 Linus Torvalds 2005-04-16 1059 xfs_trans_mod_sb(tp, XFS_TRANS_SB_REXTSIZE,
^1da177e4c3f41 Linus Torvalds 2005-04-16 1060 nsbp->sb_rextsize - sbp->sb_rextsize);
^1da177e4c3f41 Linus Torvalds 2005-04-16 1061 if (nsbp->sb_rbmblocks != sbp->sb_rbmblocks)
^1da177e4c3f41 Linus Torvalds 2005-04-16 1062 xfs_trans_mod_sb(tp, XFS_TRANS_SB_RBMBLOCKS,
^1da177e4c3f41 Linus Torvalds 2005-04-16 1063 nsbp->sb_rbmblocks - sbp->sb_rbmblocks);
^1da177e4c3f41 Linus Torvalds 2005-04-16 1064 if (nsbp->sb_rblocks != sbp->sb_rblocks)
^1da177e4c3f41 Linus Torvalds 2005-04-16 1065 xfs_trans_mod_sb(tp, XFS_TRANS_SB_RBLOCKS,
^1da177e4c3f41 Linus Torvalds 2005-04-16 1066 nsbp->sb_rblocks - sbp->sb_rblocks);
^1da177e4c3f41 Linus Torvalds 2005-04-16 1067 if (nsbp->sb_rextents != sbp->sb_rextents)
^1da177e4c3f41 Linus Torvalds 2005-04-16 1068 xfs_trans_mod_sb(tp, XFS_TRANS_SB_REXTENTS,
^1da177e4c3f41 Linus Torvalds 2005-04-16 1069 nsbp->sb_rextents - sbp->sb_rextents);
^1da177e4c3f41 Linus Torvalds 2005-04-16 1070 if (nsbp->sb_rextslog != sbp->sb_rextslog)
^1da177e4c3f41 Linus Torvalds 2005-04-16 1071 xfs_trans_mod_sb(tp, XFS_TRANS_SB_REXTSLOG,
^1da177e4c3f41 Linus Torvalds 2005-04-16 1072 nsbp->sb_rextslog - sbp->sb_rextslog);
^1da177e4c3f41 Linus Torvalds 2005-04-16 1073 /*
^1da177e4c3f41 Linus Torvalds 2005-04-16 1074 * Free new extent.
^1da177e4c3f41 Linus Torvalds 2005-04-16 1075 */
^1da177e4c3f41 Linus Torvalds 2005-04-16 1076 bp = NULL;
^1da177e4c3f41 Linus Torvalds 2005-04-16 1077 error = xfs_rtfree_range(nmp, tp, sbp->sb_rextents,
^1da177e4c3f41 Linus Torvalds 2005-04-16 1078 nsbp->sb_rextents - sbp->sb_rextents, &bp, &sumbno);
0924b585fc49bf Dave Chinner 2008-11-28 1079 if (error) {
0924b585fc49bf Dave Chinner 2008-11-28 1080 error_cancel:
4906e21545814e Christoph Hellwig 2015-06-04 1081 xfs_trans_cancel(tp);
d432c80e68e3c2 Nathan Scott 2006-09-28 1082 break;
0924b585fc49bf Dave Chinner 2008-11-28 1083 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 1084 /*
^1da177e4c3f41 Linus Torvalds 2005-04-16 1085 * Mark more blocks free in the superblock.
^1da177e4c3f41 Linus Torvalds 2005-04-16 1086 */
^1da177e4c3f41 Linus Torvalds 2005-04-16 1087 xfs_trans_mod_sb(tp, XFS_TRANS_SB_FREXTENTS,
^1da177e4c3f41 Linus Torvalds 2005-04-16 1088 nsbp->sb_rextents - sbp->sb_rextents);
^1da177e4c3f41 Linus Torvalds 2005-04-16 1089 /*
^1da177e4c3f41 Linus Torvalds 2005-04-16 1090 * Update mp values into the real mp structure.
^1da177e4c3f41 Linus Torvalds 2005-04-16 1091 */
^1da177e4c3f41 Linus Torvalds 2005-04-16 1092 mp->m_rsumlevels = nrsumlevels;
^1da177e4c3f41 Linus Torvalds 2005-04-16 1093 mp->m_rsumsize = nrsumsize;
e5720eec0548c0 David Chinner 2008-04-10 1094
70393313dd0b26 Christoph Hellwig 2015-06-04 1095 error = xfs_trans_commit(tp);
0924b585fc49bf Dave Chinner 2008-11-28 1096 if (error)
e5720eec0548c0 David Chinner 2008-04-10 1097 break;
e5720eec0548c0 David Chinner 2008-04-10 1098 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 1099
^1da177e4c3f41 Linus Torvalds 2005-04-16 1100 /*
d432c80e68e3c2 Nathan Scott 2006-09-28 1101 * Free the fake mp structure.
^1da177e4c3f41 Linus Torvalds 2005-04-16 1102 */
f0e2d93c29dc39 Denys Vlasenko 2008-05-19 1103 kmem_free(nmp);
d432c80e68e3c2 Nathan Scott 2006-09-28 1104
65eed012d1f2d0 Omar Sandoval 2018-12-21 1105 /*
65eed012d1f2d0 Omar Sandoval 2018-12-21 1106 * If we had to allocate a new rsum_cache, we either need to free the
65eed012d1f2d0 Omar Sandoval 2018-12-21 1107 * old one (if we succeeded) or free the new one and restore the old one
65eed012d1f2d0 Omar Sandoval 2018-12-21 1108 * (if there was an error).
65eed012d1f2d0 Omar Sandoval 2018-12-21 1109 */
65eed012d1f2d0 Omar Sandoval 2018-12-21 1110 if (rsum_cache != mp->m_rsum_cache) {
65eed012d1f2d0 Omar Sandoval 2018-12-21 1111 if (error) {
65eed012d1f2d0 Omar Sandoval 2018-12-21 1112 kmem_free(mp->m_rsum_cache);
65eed012d1f2d0 Omar Sandoval 2018-12-21 1113 mp->m_rsum_cache = rsum_cache;
65eed012d1f2d0 Omar Sandoval 2018-12-21 1114 } else {
65eed012d1f2d0 Omar Sandoval 2018-12-21 1115 kmem_free(rsum_cache);
65eed012d1f2d0 Omar Sandoval 2018-12-21 1116 }
65eed012d1f2d0 Omar Sandoval 2018-12-21 1117 }
65eed012d1f2d0 Omar Sandoval 2018-12-21 1118
^1da177e4c3f41 Linus Torvalds 2005-04-16 1119 return error;
^1da177e4c3f41 Linus Torvalds 2005-04-16 1120 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 1121

:::::: The code at line 892 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2

:::::: TO: Linus Torvalds <torvalds@xxxxxxxxxxxxxxx>
:::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxx>

---
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