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U2FsdGVkX198H+U4YAEwESQHWnBoNbb5bx/8GpwZ8jNfHeM6sKHUmHyYP8QJiApezsyqBghBw3FEJPiXZTHDFsHulLRldwl9xqw+fzt0pvlz1RaM2odUuBukwWQrZJDUfIVXmwioCi1I62XjGPBhjDwMaqG/n2AZ3BCDJKhJshxsJfzoscAKA0wpFxdtYVUh4a5EfkWtPRUS3vAYeegyHJPV7LforyjejiZ0Tfda+rH7Y0Py5dJJqGaru9523flIQmkc/hR3cTOdUXAC/d0pHJsZmKQD9YElfmp/EHT+P+xXDouvQq+aukWvbuLxRIQpRtAZ6h1EUeg96+ta5aKWLw5MrNNelAht5oo6vXTs3eoogBL+v092ecyJgT8Z8vMUYazJkQ/kjGivvxRfdFmeAwRcjl033aOloaX+x+bcOwY+B5ERa3siHjWrPt1L1Z5wK5nk8HPJx42IEzSgpVb91gkLWFWpj5rJzyJEfPw6UBhhpez2LPtBORt7ZLIikHq8WR8CK+0x2Rh/ygq2wCHjlmO/t/5/kxasbGnajNIO4uXI3jWDh2+M/564AebECubJjOLvVD4Y+bM0V1geQkcKirNNjWxkbsYFTkm3ttnChB0i/K9cyZVsHiuzojJ9JLNbFRNqyhfqR5QhslLtiz0yuPrYBLrfwwUxKS5S5Mz4hQpQD7KUDCjt5VyH6wiD1tVGLIDk6/IqZTr1jYcs11wthKsYXIj7VStF6VRouaV7MHCS3b7rWzVeRfqYKE5Py/7ewnVWosk+mXdAnUsH6wipa7Z6fiokpCfNRgdiR8rrlzg0A6qznszJGA+jcRX7RlaYuQxgb9d3r0Hr1sgMvdEmHYnWdYQKCSELTzf+xFndrtYnjn3ZX8j5wWPjr8RQqAyGbTg+tkQEH8baGu0qzYwZDeTbMO3IhmwoR/krWkS9JjNQWK98bF1OnKZD7pSJ4DQL3fmq+4K63brOh5LDaSM iqjHMSkp 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wrote: > On 1/22/26 14:01, Lorenzo Stoakes wrote: > > The VMA_LOCK_OFFSET value encodes a flag which vma->vm_refcnt is set to in > > order to indicate that a VMA is in the process of having VMA read-locks > > excluded in __vma_enter_locked() (that is, first checking if there are any > > VMA read locks held, and if there are, waiting on them to be released). > > > > This happens when a VMA write lock is being established, or a VMA is being > > marked detached and discovers that the VMA reference count is elevated due > > to read-locks temporarily elevating the reference count only to discover a > > VMA write lock is in place. > > > > The naming does not convey any of this, so rename VMA_LOCK_OFFSET to > > VM_REFCNT_EXCLUDE_READERS_FLAG (with a sensible new prefix to differentiate > > from the newly introduced VMA_*_BIT flags). > > > > Also rename VMA_REF_LIMIT to VM_REFCNT_LIMIT to make this consistent also. > > > > Update comments to reflect this. > > > > No functional change intended. > > > > Signed-off-by: Lorenzo Stoakes > > Reviewed-by: Vlastimil Babka > > git grep tells me VMA_LOCK_OFFSET is still used in > tools/testing/vma/vma_internal.h but I guess it doesn't break the tests? > No :) I update it later in the series but it doesn't break the tests so no bisection hazard. Cheers, Lorenzo