Add bwillwrite to all system calls that create things in the filesystem.
Benchmarks that create huge trees of empty files overwhelm the buffer cache.
This commit is contained in:
parent
411e1480fd
commit
bd5f5da94d
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=55696
@ -1111,6 +1111,7 @@ mknod(p, uap)
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}
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if (error)
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return (error);
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bwillwrite();
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NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, SCARG(uap, path), p);
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if ((error = namei(&nd)) != 0)
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return (error);
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@ -1189,6 +1190,7 @@ mkfifo(p, uap)
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int error;
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struct nameidata nd;
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bwillwrite();
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NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, SCARG(uap, path), p);
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if ((error = namei(&nd)) != 0)
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return (error);
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@ -1235,6 +1237,7 @@ link(p, uap)
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struct nameidata nd;
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int error;
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bwillwrite();
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NDINIT(&nd, LOOKUP, FOLLOW|NOOBJ, UIO_USERSPACE, SCARG(uap, path), p);
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if ((error = namei(&nd)) != 0)
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return (error);
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@ -1295,6 +1298,7 @@ symlink(p, uap)
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path = zalloc(namei_zone);
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if ((error = copyinstr(SCARG(uap, path), path, MAXPATHLEN, NULL)) != 0)
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goto out;
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bwillwrite();
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NDINIT(&nd, CREATE, LOCKPARENT|NOOBJ, UIO_USERSPACE, SCARG(uap, link), p);
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if ((error = namei(&nd)) != 0)
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goto out;
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@ -1337,6 +1341,7 @@ undelete(p, uap)
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int error;
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struct nameidata nd;
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bwillwrite();
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NDINIT(&nd, DELETE, LOCKPARENT|DOWHITEOUT, UIO_USERSPACE,
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SCARG(uap, path), p);
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error = namei(&nd);
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@ -1383,6 +1388,7 @@ unlink(p, uap)
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int error;
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struct nameidata nd;
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bwillwrite();
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NDINIT(&nd, DELETE, LOCKPARENT, UIO_USERSPACE, SCARG(uap, path), p);
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if ((error = namei(&nd)) != 0)
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return (error);
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@ -2569,6 +2575,7 @@ rename(p, uap)
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struct nameidata fromnd, tond;
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int error;
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bwillwrite();
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NDINIT(&fromnd, DELETE, WANTPARENT | SAVESTART, UIO_USERSPACE,
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SCARG(uap, from), p);
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if ((error = namei(&fromnd)) != 0)
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@ -2671,6 +2678,7 @@ mkdir(p, uap)
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int error;
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struct nameidata nd;
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bwillwrite();
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NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, SCARG(uap, path), p);
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nd.ni_cnd.cn_flags |= WILLBEDIR;
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if ((error = namei(&nd)) != 0)
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@ -2719,6 +2727,7 @@ rmdir(p, uap)
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int error;
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struct nameidata nd;
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bwillwrite();
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NDINIT(&nd, DELETE, LOCKPARENT | LOCKLEAF, UIO_USERSPACE,
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SCARG(uap, path), p);
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if ((error = namei(&nd)) != 0)
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@ -1111,6 +1111,7 @@ mknod(p, uap)
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}
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if (error)
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return (error);
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bwillwrite();
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NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, SCARG(uap, path), p);
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if ((error = namei(&nd)) != 0)
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return (error);
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@ -1189,6 +1190,7 @@ mkfifo(p, uap)
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int error;
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struct nameidata nd;
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bwillwrite();
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NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, SCARG(uap, path), p);
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if ((error = namei(&nd)) != 0)
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return (error);
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@ -1235,6 +1237,7 @@ link(p, uap)
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struct nameidata nd;
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int error;
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bwillwrite();
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NDINIT(&nd, LOOKUP, FOLLOW|NOOBJ, UIO_USERSPACE, SCARG(uap, path), p);
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if ((error = namei(&nd)) != 0)
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return (error);
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@ -1295,6 +1298,7 @@ symlink(p, uap)
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path = zalloc(namei_zone);
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if ((error = copyinstr(SCARG(uap, path), path, MAXPATHLEN, NULL)) != 0)
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goto out;
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bwillwrite();
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NDINIT(&nd, CREATE, LOCKPARENT|NOOBJ, UIO_USERSPACE, SCARG(uap, link), p);
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if ((error = namei(&nd)) != 0)
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goto out;
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@ -1337,6 +1341,7 @@ undelete(p, uap)
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int error;
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struct nameidata nd;
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bwillwrite();
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NDINIT(&nd, DELETE, LOCKPARENT|DOWHITEOUT, UIO_USERSPACE,
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SCARG(uap, path), p);
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error = namei(&nd);
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@ -1383,6 +1388,7 @@ unlink(p, uap)
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int error;
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struct nameidata nd;
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bwillwrite();
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NDINIT(&nd, DELETE, LOCKPARENT, UIO_USERSPACE, SCARG(uap, path), p);
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if ((error = namei(&nd)) != 0)
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return (error);
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@ -2569,6 +2575,7 @@ rename(p, uap)
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struct nameidata fromnd, tond;
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int error;
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bwillwrite();
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NDINIT(&fromnd, DELETE, WANTPARENT | SAVESTART, UIO_USERSPACE,
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SCARG(uap, from), p);
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if ((error = namei(&fromnd)) != 0)
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@ -2671,6 +2678,7 @@ mkdir(p, uap)
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int error;
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struct nameidata nd;
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bwillwrite();
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NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, SCARG(uap, path), p);
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nd.ni_cnd.cn_flags |= WILLBEDIR;
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if ((error = namei(&nd)) != 0)
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@ -2719,6 +2727,7 @@ rmdir(p, uap)
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int error;
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struct nameidata nd;
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bwillwrite();
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NDINIT(&nd, DELETE, LOCKPARENT | LOCKLEAF, UIO_USERSPACE,
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SCARG(uap, path), p);
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if ((error = namei(&nd)) != 0)
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@ -92,6 +92,7 @@ vn_open(ndp, fmode, cmode)
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ndp->ni_cnd.cn_flags = LOCKPARENT | LOCKLEAF;
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if ((fmode & O_EXCL) == 0 && (fmode & O_NOFOLLOW) == 0)
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ndp->ni_cnd.cn_flags |= FOLLOW;
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bwillwrite();
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error = namei(ndp);
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if (error)
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return (error);
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