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linux/kmem: remove PF_FSTRANS and PF_MEMALLOC_NOIO compat

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Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Signed-off-by: Rob Norris <robn@despairlabs.com>
Sponsored-by: https://despairlabs.com/sponsor/
Closes #17551
This commit is contained in:
Rob Norris
2025-07-15 22:43:42 +10:00
committed by Brian Behlendorf
parent cecff09faa
commit 96d20d7d59
4 changed files with 5 additions and 59 deletions
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include/os/linux/spl/sys/kmem.h
+5 -29
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@@ -61,7 +61,7 @@ void *spl_kvmalloc(size_t size, gfp_t flags);
/*
* Convert a KM_* flags mask to its Linux GFP_* counterpart. The conversion
* function is context aware which means that KM_SLEEP allocations can be
* safely used in syncing contexts which have set PF_FSTRANS.
* safely used in syncing contexts which have set SPL_FSTRANS.
*/
static inline gfp_t
kmem_flags_convert(int flags)
@@ -91,25 +91,11 @@ typedef struct {
} fstrans_cookie_t;
/*
* Introduced in Linux 3.9, however this cannot be solely relied on before
* Linux 3.18 as it doesn't turn off __GFP_FS as it should.
* SPL_FSTRANS is the set of flags that indicate that the task is in a
* filesystem or IO codepath, and so any allocation must not call back into
* those codepaths (eg to swap).
*/
#ifdef PF_MEMALLOC_NOIO
#define __SPL_PF_MEMALLOC_NOIO (PF_MEMALLOC_NOIO)
#else
#define __SPL_PF_MEMALLOC_NOIO (0)
#endif
/*
* PF_FSTRANS is removed from Linux 4.12
*/
#ifdef PF_FSTRANS
#define __SPL_PF_FSTRANS (PF_FSTRANS)
#else
#define __SPL_PF_FSTRANS (0)
#endif
#define SPL_FSTRANS (__SPL_PF_FSTRANS|__SPL_PF_MEMALLOC_NOIO)
#define SPL_FSTRANS (PF_MEMALLOC_NOIO)
static inline fstrans_cookie_t
spl_fstrans_mark(void)
@@ -141,16 +127,6 @@ spl_fstrans_check(void)
return (current->flags & SPL_FSTRANS);
}
/*
* specifically used to check PF_FSTRANS flag, cannot be relied on for
* checking spl_fstrans_mark().
*/
static inline int
__spl_pf_fstrans_check(void)
{
return (current->flags & __SPL_PF_FSTRANS);
}
/*
* Kernel compatibility for GFP flags
*/