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Mon, 20 Jan 2025 22:34:00 GMT (envelope-from git) Date: Mon, 20 Jan 2025 22:34:00 GMT Message-Id: <202501202234.50KMY0K8006663@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: Alan Somers Subject: git: 4ded81daacec - stable/13 - namei: add more detail about LOCKSHARED's behavior List-Id: Commit messages for all branches of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-all List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: dev-commits-src-all@freebsd.org Sender: owner-dev-commits-src-all@FreeBSD.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: asomers X-Git-Repository: src X-Git-Refname: refs/heads/stable/13 X-Git-Reftype: branch X-Git-Commit: 4ded81daacec72e16da6cdb64bde8edd4a8fe0e4 Auto-Submitted: auto-generated The branch stable/13 has been updated by asomers: URL: https://cgit.FreeBSD.org/src/commit/?id=4ded81daacec72e16da6cdb64bde8edd4a8fe0e4 commit 4ded81daacec72e16da6cdb64bde8edd4a8fe0e4 Author: Alan Somers AuthorDate: 2024-12-17 20:10:57 +0000 Commit: Alan Somers CommitDate: 2025-01-20 22:33:53 +0000 namei: add more detail about LOCKSHARED's behavior [skip ci] Sponsored by: ConnectWise Reviewed by: markj Differential Revision: https://reviews.freebsd.org/D48125 (cherry picked from commit 22bb70a6b3bb7799276ab480e40665b7d6e4ce25) --- share/man/man9/namei.9 | 19 +++++++++++++++---- 1 file changed, 15 insertions(+), 4 deletions(-) diff --git a/share/man/man9/namei.9 b/share/man/man9/namei.9 index 8890abedcc59..9e60985a4965 100644 --- a/share/man/man9/namei.9 +++ b/share/man/man9/namei.9 @@ -31,7 +31,7 @@ .\" If you integrate this manpage in another OS, I'd appreciate a note .\" - eivind@FreeBSD.org .\" -.Dd May 23, 2015 +.Dd December 17, 2024 .Dt NAMEI 9 .Os .Sh NAME @@ -124,7 +124,6 @@ Lock vnode on return with unless .Dv LOCKSHARED is also set. -The .Xr VOP_UNLOCK 9 should be used to release the lock (or @@ -153,8 +152,20 @@ and .Xr vrele 9 . .It Dv LOCKSHARED Lock vnode on return with -.Dv LK_SHARED . -The +.Dv LK_SHARED , +if permitted by the file system that owns the vnode. +The file system must explicitly permit this by setting +.Dv MNTK_LOOKUP_SHARED +in +.Dv mp->mnt_kern_flag +during mount and by calling +.Fn VN_LOCK_ASHARE +when allocating the vnode. +If +.Dv LOCKLEAF +is specified but shared locking is not permitted, then the vnode will be +returned with +.Dv LK_EXCLUSIVE . .Xr VOP_UNLOCK 9 should be used to release the lock (or