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Const some unchanging variables in zfs_write 

Show that these values will not be changing later.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Matt Macy <mmacy@FreeBSD.org>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Signed-off-by: Ryan Moeller <ryan@iXsystems.com>
Closes #11176
This commit is contained in:
Ryan Moeller 2020-11-04 23:10:12 +00:00 committed by Brian Behlendorf
parent 2074dfd0e9
commit 9a764716fc
1 changed files with 3 additions and 3 deletions
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6
module/zfs/zfs_vnops.c
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@ -326,7 +326,7 @@ zfs_write(znode_t *zp, uio_t *uio, int ioflag, cred_t *cr)
if (n == 0)
return (0);
rlim64_t limit = MAXOFFSET_T;
const rlim64_t limit = MAXOFFSET_T;
zfsvfs_t *zfsvfs = ZTOZSB(zp);
ZFS_ENTER(zfsvfs);
@ -370,7 +370,7 @@ zfs_write(znode_t *zp, uio_t *uio, int ioflag, cred_t *cr)
return (SET_ERROR(EINVAL));
}
int max_blksz = zfsvfs->z_max_blksz;
const uint64_t max_blksz = zfsvfs->z_max_blksz;
/*
* Pre-fault the pages to ensure slow (eg NFS) pages
@ -674,7 +674,7 @@ zfs_write(znode_t *zp, uio_t *uio, int ioflag, cred_t *cr)
zfsvfs->z_os->os_sync == ZFS_SYNC_ALWAYS)
zil_commit(zilog, zp->z_id);
int64_t nwritten = start_resid - uio->uio_resid;
const int64_t nwritten = start_resid - uio->uio_resid;
dataset_kstats_update_write_kstats(&zfsvfs->z_kstat, nwritten);
task_io_account_write(nwritten);