Date: Tue, 29 Dec 2009 02:35:51 +0000 (UTC) From: Joseph Koshy <jkoshy@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r201151 - head/sys/dev/hwpmc Message-ID: <200912290235.nBT2ZpBs008195@svn.freebsd.org>
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Author: jkoshy Date: Tue Dec 29 02:35:50 2009 New Revision: 201151 URL: http://svn.freebsd.org/changeset/base/201151 Log: Use VFS_{LOCK,UNLOCK}_GIANT() around the call to vrele(). Reviewed by: kib Modified: head/sys/dev/hwpmc/hwpmc_mod.c Modified: head/sys/dev/hwpmc/hwpmc_mod.c ============================================================================== --- head/sys/dev/hwpmc/hwpmc_mod.c Tue Dec 29 00:02:57 2009 (r201150) +++ head/sys/dev/hwpmc/hwpmc_mod.c Tue Dec 29 02:35:50 2009 (r201151) @@ -41,6 +41,7 @@ __FBSDID("$FreeBSD$"); #include <sys/lock.h> #include <sys/malloc.h> #include <sys/module.h> +#include <sys/mount.h> #include <sys/mutex.h> #include <sys/pmc.h> #include <sys/pmckern.h> @@ -1625,6 +1626,7 @@ pmc_log_kernel_mappings(struct pmc *pm) static void pmc_log_process_mappings(struct pmc_owner *po, struct proc *p) { + int locked; vm_map_t map; struct vnode *vp; struct vmspace *vm; @@ -1733,7 +1735,11 @@ pmc_log_process_mappings(struct pmc_owne freepath = NULL; pmc_getfilename(vp, &fullpath, &freepath); last_vp = vp; + + locked = VFS_LOCK_GIANT(vp->v_mount); vrele(vp); + VFS_UNLOCK_GIANT(locked); + vp = NULL; pmclog_process_map_in(po, p->p_pid, start_addr, fullpath); if (freepath)
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