git: fcfc3fe00d32 - stable/14 - LinuxKPI: Add ida_alloc_min()
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Date: Sat, 17 Feb 2024 21:33:03 UTC
The branch stable/14 has been updated by wulf: URL: https://cgit.FreeBSD.org/src/commit/?id=fcfc3fe00d32c6beb228a13294c8e8288a776ad0 commit fcfc3fe00d32c6beb228a13294c8e8288a776ad0 Author: Vladimir Kondratyev <wulf@FreeBSD.org> AuthorDate: 2023-12-24 08:19:59 +0000 Commit: Vladimir Kondratyev <wulf@FreeBSD.org> CommitDate: 2024-02-17 20:58:38 +0000 LinuxKPI: Add ida_alloc_min() ida_alloc_min() allocates an unused ID. between min and INT_MAX. While here allow end parameter of ida_simple_get() be larger than INT_MAX. Linux caps the value to INT_MAX. Sponsored by: Serenity Cyber Security, LLC Reviewers: manu, bz MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D42806 (cherry picked from commit c7312643b7e5f01adc2a3094c5139f5dcab5f0a4) --- sys/compat/linuxkpi/common/include/linux/idr.h | 7 +++++++ sys/compat/linuxkpi/common/src/linux_idr.c | 5 ++--- 2 files changed, 9 insertions(+), 3 deletions(-) diff --git a/sys/compat/linuxkpi/common/include/linux/idr.h b/sys/compat/linuxkpi/common/include/linux/idr.h index 2fb2e1734878..ca3f8171ff44 100644 --- a/sys/compat/linuxkpi/common/include/linux/idr.h +++ b/sys/compat/linuxkpi/common/include/linux/idr.h @@ -31,6 +31,7 @@ #include <sys/param.h> #include <sys/lock.h> +#include <sys/limits.h> #include <sys/mutex.h> #include <linux/types.h> @@ -131,6 +132,12 @@ ida_get_new(struct ida *ida, int *p_id) return (ida_get_new_above(ida, 0, p_id)); } +static inline int +ida_alloc_min(struct ida *ida, unsigned int min, gfp_t gfp) +{ + return (ida_simple_get(ida, min, UINT_MAX, gfp)); +} + static inline int ida_alloc_max(struct ida *ida, unsigned int max, gfp_t gfp) { diff --git a/sys/compat/linuxkpi/common/src/linux_idr.c b/sys/compat/linuxkpi/common/src/linux_idr.c index a484a16e2862..657d85606f50 100644 --- a/sys/compat/linuxkpi/common/src/linux_idr.c +++ b/sys/compat/linuxkpi/common/src/linux_idr.c @@ -755,10 +755,9 @@ ida_simple_get(struct ida *ida, unsigned int start, unsigned int end, unsigned int max; MPASS((int)start >= 0); - MPASS((int)end >= 0); - if (end == 0) - max = 0x80000000; + if ((int)end <= 0) + max = INT_MAX; else { MPASS(end > start); max = end - 1;